Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta

More Options

• Similar
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

/**
 * @title XBurnMinter
 * @dev Main contract for burning XEN tokens to get XBURN tokens.
 * Creates NFTs representing locked positions and handles reward distribution.
 * Optimized for gas efficiency and security.
 */

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol";
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";

import {XBurnNFT} from "./XBurnNFT.sol";

// ------------------------------------------------
// ================ Interfaces ===================
// ------------------------------------------------

/**
 * @dev Interface for tokens that can be burned
 */
interface IBurnableToken {
    function burn(address account, uint256 amount) external;
}

/**
 * @dev Interface for contracts that receive burn callbacks
 */
interface IBurnRedeemable {
    function onTokenBurned(address user, uint256 amount) external;
}

/**
 * @dev Extended interface for XBURN token
 */
interface IXBURN is IERC20 {
    function mint(address to, uint256 amount) external;
    function burn(address account, uint256 amount) external;
}

/**
 * @dev Extended interface for Uniswap V2 pairs
 */
interface IUniswapV2PairExtended is IUniswapV2Pair {
    function token0() external view returns (address);
    function token1() external view returns (address);
}

/**
 * @dev Interface for XBurnNFT contract
 */
interface IXBurnNFT {
    function mint(
        address to,
        uint256 xenAmount,
        uint256 termDays,
        uint256 ampSnapshot,
        uint256 rewardAmount
    ) external returns (uint256);

    function setClaimed(uint256 tokenId) external;
    function burn(uint256 tokenId) external;
    function ownerOf(uint256 tokenId) external view returns (address);

    function getLockDetails(uint256 tokenId) external view returns (
        uint256 xenAmount,
        uint256 maturityTs,
        uint256 ampSnapshot,
        uint256 termDays,
        bool claimed,
        uint256 rewardAmount,
        uint256 baseMint,
        address owner
    );

    function getAllUserLocks(address user, uint256 page, uint256 pageSize) external view returns (uint256[] memory, uint256 totalPages);
    function setMinter(address newMinter) external;
}

/**
 * @title XBurnMinter
 * @dev Main contract for burning XEN tokens and minting XBURN tokens
 */
contract XBurnMinter is ERC20, Ownable, ReentrancyGuard, IBurnRedeemable, IERC165 {
    using SafeERC20 for IERC20;

    // ------------------------------------------------
    // ================ Constants ====================
    // ------------------------------------------------

    uint256 public constant AMP_START = 1;
    uint256 public constant AMP_END = 1;
    uint256 public constant BASE_RATIO = 1_000_000; // 1M XEN = 1 XBURN (Updated)
    uint256 public constant MIN_TERM = 1 days;
    uint256 public constant MAX_TERM = 3650 days; // ~10 years
    uint256 public constant INITIAL_SUPPLY = 50_000 * 10**18;
    uint256 public constant SWAP_THRESHOLD = 500_000_000 * 1e18; // Mainnet: 500M XEN
    uint256 public constant CALLER_REWARD_PERCENTAGE = 5;
    uint256 public constant MAX_DEADLINE = 15 minutes;
    uint256 public constant MINIMUM_LIQUIDITY = 100_000 * 1e18;
    uint256 public constant MAX_BATCH_SIZE = 50; // Re-added: Maximum batch size for view function loops

    // ------------------------------------------------
    // ================ State Variables ==============
    // ------------------------------------------------

    // External contract references (immutable for gas savings)
    IERC20 public immutable XEN;
    XBurnNFT public immutable nftContract;
    IUniswapV2Router02 public immutable uniswapRouter;
    uint256 public immutable LAUNCH_TS; // Timestamp when contract was launched

    // Tracking state variables (uint256 grouped together for storage optimization)
    uint256 public globalBurnRank; // Number of burning participants
    uint256 public totalXenBurned;
    uint256 public totalXburnMinted;
    uint256 public totalXburnBurned;
    uint256 public pendingXen;     // XEN waiting to be swapped
    
    // Address variables
    address public liquidityPair;  // Uniswap pair address
    
    // Boolean variables
    bool public liquidityInitialized;
    
    // Mappings
    mapping(address => uint256) public userXenBurned;
    mapping(address => uint256) public userXburnMinted;
    mapping(address => uint256) public userXburnBurned;

    // ------------------------------------------------
    // ================ Custom Errors ================
    // ------------------------------------------------

    error LiquidityAlreadyInitialized();
    error InsufficientXen(uint256 required, uint256 provided);
    error LiquidityPairNotSet();
    error LiquidityNotInitialized();
    error PendingXenTooLow(uint256 current, uint256 required);
    error SwapFailedError(string reason);
    error InvalidAmount(uint256 amount);
    error InvalidTerm(uint256 providedDays, uint256 maxDays);
    error NotTokenOwner(uint256 tokenId, address provided, address actual);
    error TokenNotClaimable(uint256 tokenId);
    error TokenAlreadyClaimed(uint256 tokenId);
    error TokenNotMatured(uint256 tokenId, uint256 maturityTs, uint256 currentTime);
    error UnauthorizedCallback(address sender, address expected);

    // ------------------------------------------------
    // ================== Events =====================
    // ------------------------------------------------

    event XENBurned(address indexed user, uint256 amount);
    event XBURNClaimed(address indexed user, uint256 baseAmount, uint256 bonusAmount);
    event EmergencyEnd(address indexed user, uint256 baseAmount);
    event GlobalStatsUpdated(uint256 totalXenBurned, uint256 totalXburnMinted);
    event XBURNBurned(address indexed user, uint256 amount);
    event CallerRewarded(address indexed caller, uint256 amount);
    event SwapFailed(string reason, string message, uint256 xenAmount);
    event BurnNFTMinted(address indexed user, uint256 tokenId, uint256 xenAmount, uint256 termDays);
    event LiquidityInitialized(uint256 amountXBURN, uint256 amountXEN, uint256 liquidity);

    // ------------------------------------------------
    // ================ Constructor =================
    // ------------------------------------------------

    /**
     * @dev Initializes the contract
     * @param _xen XEN token address
     * @param _router Uniswap router address
     * @param _nft XBurnNFT contract address
     */
    constructor(
        address _xen,
        address _router,
        address _nft
    ) ERC20("XBURN", "XBURN") Ownable(msg.sender) {
        // Initialize constants
        LAUNCH_TS = block.timestamp;
        globalBurnRank = 1;
        
        // Store contract references
        XEN = IERC20(_xen);
        uniswapRouter = IUniswapV2Router02(_router);
        nftContract = XBurnNFT(_nft);

        // Mint initial supply to this contract
        _mint(address(this), INITIAL_SUPPLY);
    }

    // ------------------------------------------------
    // ================ Liquidity ====================
    // ------------------------------------------------

    /**
     * @dev Initializes liquidity in Uniswap
     * @param xenAmount Amount of XEN to provide for liquidity
     */
    function initializeLiquidity(uint256 xenAmount) external onlyOwner nonReentrant {
        if (liquidityInitialized) revert LiquidityAlreadyInitialized();
        if (xenAmount < MINIMUM_LIQUIDITY) revert InsufficientXen(MINIMUM_LIQUIDITY, xenAmount);
        if (XEN.balanceOf(msg.sender) < xenAmount) revert InsufficientXen(xenAmount, XEN.balanceOf(msg.sender));

        // Transfer XEN to this contract
        XEN.safeTransferFrom(msg.sender, address(this), xenAmount);

        // Approve tokens for Uniswap router
        _approve(address(this), address(uniswapRouter), INITIAL_SUPPLY);
        XEN.approve(address(uniswapRouter), xenAmount);

        // Add liquidity
        _doAddLiquidity(xenAmount);
    }

    /**
     * @dev Helper to add liquidity (reduces stack depth)
     * @param xenAmount Amount of XEN to provide
     */
    function _doAddLiquidity(uint256 xenAmount) private {
        (uint256 xburnUsed, uint256 xenUsed, uint256 liquidity) = uniswapRouter.addLiquidity(
            address(this),
            address(XEN),
            INITIAL_SUPPLY,
            xenAmount,
            (INITIAL_SUPPLY * 95) / 100, // Allow 5% slippage
            (xenAmount * 95) / 100,      // Allow 5% slippage
            msg.sender,                   // LP tokens to owner
            block.timestamp + MAX_DEADLINE
        );

        // Ensure liquidity was created successfully
        if (liquidity == 0) revert InsufficientXen(MINIMUM_LIQUIDITY, xenAmount);
        
        // Get the pair address from factory
        liquidityPair = IUniswapV2Factory(uniswapRouter.factory()).getPair(address(this), address(XEN));
        if (liquidityPair == address(0)) revert LiquidityPairNotSet();
        
        // Mark as initialized
        liquidityInitialized = true;
        
        // Emit event
        emit LiquidityInitialized(xburnUsed, xenUsed, liquidity);
    }

    // ------------------------------------------------
    // ================ Swapping ====================
    // ------------------------------------------------

    /**
     * @dev Swaps accumulated XEN for XBURN and burns it
     * @param minXburnReceived Minimum amount of XBURN to receive
     */
    function swapXenForXburn(uint256 minXburnReceived) external nonReentrant {
        if (!liquidityInitialized) revert LiquidityNotInitialized();
        if (liquidityPair == address(0)) revert LiquidityPairNotSet();
        if (pendingXen < SWAP_THRESHOLD) revert PendingXenTooLow(pendingXen, SWAP_THRESHOLD);

        // Get amount to swap and reset pending counter
        uint256 xenToSwap = pendingXen;
        pendingXen = 0;

        // Execute swap
        _executeSwap(xenToSwap, minXburnReceived);
    }

    /**
     * @dev Helper to execute the swap (reduces stack depth)
     * @param xenToSwap Amount of XEN to swap
     * @param minXburnReceived Minimum amount of XBURN to receive
     */
    function _executeSwap(uint256 xenToSwap, uint256 minXburnReceived) private {
        // Calculate caller reward
        uint256 callerReward = (xenToSwap * CALLER_REWARD_PERCENTAGE) / 100;
        uint256 xenForSwap = xenToSwap - callerReward;
        
        // Send reward to caller
        XEN.safeTransfer(msg.sender, callerReward);
        emit CallerRewarded(msg.sender, callerReward);

        // Set up swap path
        address[] memory path = new address[](2);
        path[0] = address(XEN);
        path[1] = address(this);

        // Approve router to spend XEN
        XEN.safeIncreaseAllowance(address(uniswapRouter), xenForSwap);

        // Execute swap with try/catch for safety
        try uniswapRouter.swapExactTokensForTokens(
            xenForSwap,
            minXburnReceived,
            path,
            msg.sender,  // Changed: Send to caller first, not contract
            block.timestamp + MAX_DEADLINE
        ) returns (uint256[] memory amounts) {
            uint256 xburnReceived = amounts[1];
            
            // Transfer tokens back to contract
            _transfer(msg.sender, address(this), xburnReceived);
            
            // Burn the received XBURN tokens
            _burn(address(this), xburnReceived);
            totalXburnBurned += xburnReceived;
            
            // Add event to match old contract
            emit XBURNBurned(address(this), xburnReceived);
        } catch Error(string memory reason) {
            // Revert pendingXen if swap fails
            pendingXen = xenToSwap;
            emit SwapFailed("Swap transaction failed", reason, xenToSwap);
            revert SwapFailedError(reason);
        } catch {
            // Revert pendingXen if swap fails with no reason
            pendingXen = xenToSwap;
            emit SwapFailed("Swap transaction failed", "Unknown error", xenToSwap);
            revert SwapFailedError("Unknown error");
        }
    }

    // ------------------------------------------------
    // ============== Main Burn Logic ================
    // ------------------------------------------------

    /**
     * @dev Calculates reward amount based on base, amplifier, and term
     * @param baseAmount Base amount of XBURN
     * @param ampSnapshot Amplifier snapshot value
     * @param termDays Term duration in days
     * @return Total reward amount
     */
    function _calculateReward(
        uint256 baseAmount, 
        uint256 ampSnapshot, 
        uint256 termDays
    ) private pure returns (uint256) {
        // Calculate percentage scaled up to MAX_TERM (3650 days)
        uint256 termPercentage = (termDays * 100) / (MAX_TERM / 1 days); // Use MAX_TERM constant
        uint256 ampPercentage = (ampSnapshot * 100) / AMP_START;  // 0-100
        
        // Calculate bonus (up to 100% based on term and amp)
        uint256 bonus = (baseAmount * termPercentage * ampPercentage) / 10000;
        
        return baseAmount + bonus;
    }

    /**
     * @dev Burns XEN tokens to mint XBURN (locked in an NFT)
     * @param amount Amount of XEN to burn (in wei)
     * @param termDays Lock duration in days
     */
    function burnXEN(uint256 amount, uint256 termDays) external nonReentrant {
        // Corrected Check: Ensure at least BASE_RATIO *full* XEN tokens are burned
        if (amount < BASE_RATIO * 1e18) revert InvalidAmount(amount); 
        if (termDays * 1 days > MAX_TERM) revert InvalidTerm(termDays, MAX_TERM / 1 days);
        
        // Step 1: Handle XEN tokens (burn + accumulate)
        _handleXenTokens(amount);
        
        // Step 2: Create NFT representing the locked position
        _createBurnNFT(amount, termDays);
    }

    /**
     * @dev Helper to handle XEN tokens during burn (reduces stack depth)
     * @param amount Total amount of XEN to handle
     */
    function _handleXenTokens(uint256 amount) private {
        // Split: 80% burned directly, 20% accumulated for later swaps
        uint256 xenForAccumulation = (amount * 20) / 100;
        uint256 xenForBurn = amount - xenForAccumulation;
        
        // Transfer accumulation portion to contract
        XEN.safeTransferFrom(msg.sender, address(this), xenForAccumulation);
        pendingXen += xenForAccumulation;
        
        // Burn directly from user's address
        IBurnableToken(address(XEN)).burn(msg.sender, xenForBurn);
        
        // Update stats
        totalXenBurned += amount;
        userXenBurned[msg.sender] += amount;
    }

    /**
     * @dev Helper to create NFT during burn (reduces stack depth)
     * @param amount Amount of XEN burned
     * @param termDays Lock duration in days
     */
    function _createBurnNFT(uint256 amount, uint256 termDays) private {
        // Calculate reward values
        uint256 baseAmount = amount / BASE_RATIO;
        uint256 ampSnapshot = _currentAMP();
        uint256 rewardAmount = _calculateReward(baseAmount, ampSnapshot, termDays);
        
        // Create NFT lock
        uint256 tokenId = nftContract.mint(
            msg.sender,   // NFT owner
            amount,       // Original XEN amount
            termDays,     // Term days
            ampSnapshot,  // Current amplifier snapshot
            rewardAmount  // Total reward amount including bonus
        );
        
        // Increase global burn rank
        globalBurnRank++;
        
        // Emit events
        emit XENBurned(msg.sender, amount);
        emit BurnNFTMinted(msg.sender, tokenId, amount, termDays);
        emit GlobalStatsUpdated(totalXenBurned, totalXburnMinted);
    }

    // ------------------------------------------------
    // ============== Claiming Lock Logic =============
    // ------------------------------------------------

    /**
     * @dev XEN burn callback implementation
     * Required by IBurnRedeemable interface
     * @param user Address of the user who burned tokens
     * @param amount Amount of tokens burned
     */
    function onTokenBurned(address user, uint256 amount) external override {
        // Only XEN contract can call this function
        if (msg.sender != address(XEN)) revert UnauthorizedCallback(msg.sender, address(XEN));
    }

    /**
     * @dev ERC165 interface support
     * @param interfaceId Interface identifier to check
     * @return bool True if this contract supports the interface
     */
    function supportsInterface(bytes4 interfaceId) external pure override returns (bool) {
        return 
            interfaceId == type(IBurnRedeemable).interfaceId || 
            interfaceId == type(IERC165).interfaceId;
    }

    /**
     * @dev Claims XBURN rewards from a mature lock
     * @param tokenId NFT token ID to claim
     */
    function claimLockedXBURN(uint256 tokenId) external nonReentrant {
        // Validate ownership
        address owner = nftContract.ownerOf(tokenId);
        if (owner != msg.sender) revert NotTokenOwner(tokenId, msg.sender, owner);

        // Validate token is claimable
        (bool isValid, uint256 xenAmount, uint256 rewardAmount) = _validateTokenForClaim(tokenId);
        if (!isValid) revert TokenNotClaimable(tokenId);

        // Process the claim
        _processClaim(tokenId, xenAmount, rewardAmount);
    }

    /**
     * @dev Helper to validate a token for claiming (reduces stack depth)
     * @param tokenId NFT token ID to validate
     * @return isValid Whether the token is valid for claiming
     * @return xenAmount Amount of XEN burned
     * @return rewardAmount Total reward amount
     */
    function _validateTokenForClaim(uint256 tokenId) private view returns (
        bool isValid,
        uint256 xenAmount,
        uint256 rewardAmount
    ) {
        uint256 maturityTs;
        bool claimed;
        uint256 baseMint;
        address owner;
        uint256 ampSnapshot;
        uint256 termDays;
        
        (
            xenAmount,
            maturityTs,
            ampSnapshot,
            termDays,
            claimed,
            rewardAmount,
            baseMint,
            owner
        ) = nftContract.getLockDetails(tokenId);

        // Token is valid if not claimed and matured
        isValid = !claimed && block.timestamp >= maturityTs;
        
        return (isValid, xenAmount, rewardAmount);
    }

    /**
     * @dev Helper to process a claim (reduces stack depth)
     * @param tokenId NFT token ID to process
     * @param xenAmount Amount of XEN burned
     * @param rewardAmount Total reward amount
     */
    function _processClaim(
        uint256 tokenId, 
        uint256 xenAmount, 
        uint256 rewardAmount
    ) private {
        // Mint the reward to the claimer
        _mint(msg.sender, rewardAmount);
        
        // Update stats
        totalXburnMinted += rewardAmount;
        userXburnMinted[msg.sender] += rewardAmount;

        // Mark NFT as claimed and burn it
        nftContract.setClaimed(tokenId);
        nftContract.burn(tokenId);

        // Calculate base amount for event
        uint256 baseAmount = xenAmount / BASE_RATIO;
        
        // Emit events
        emit XBURNClaimed(msg.sender, baseAmount, rewardAmount - baseAmount);
        emit GlobalStatsUpdated(totalXenBurned, totalXburnMinted);
    }

    /**
     * @dev Emergency withdrawal with reduced rewards
     * @param tokenId NFT token ID to emergency withdraw
     */
    function emergencyEnd(uint256 tokenId) external nonReentrant {
        // Verify ownership
        address owner = nftContract.ownerOf(tokenId);
        if (owner != msg.sender) revert NotTokenOwner(tokenId, msg.sender, owner);

        // Validate token
        bool isValid = false;
        uint256 baseMint = 0;
        (isValid, baseMint) = _validateEmergencyEnd(tokenId);
        if (!isValid) revert TokenNotClaimable(tokenId);

        // Process emergency end
        _processEmergencyEnd(tokenId, baseMint);
    }

    /**
     * @dev Helper to validate emergency end (reduces stack depth)
     * @param tokenId NFT token ID to validate
     * @return isValid Whether token is valid for emergency end
     * @return baseMint Base mint amount (no bonus)
     */
    function _validateEmergencyEnd(uint256 tokenId) private view returns (bool isValid, uint256 baseMint) {
        uint256 xenAmount;
        uint256 maturityTs;
        uint256 ampSnapshot;
        uint256 termDays;
        bool claimed;
        uint256 rewardAmount;
        address tokenOwner;
        
        (
            xenAmount,
            maturityTs,
            ampSnapshot,
            termDays,
            claimed,
            rewardAmount,
            baseMint,
            tokenOwner
        ) = nftContract.getLockDetails(tokenId);

        // Valid if not claimed (any maturity date)
        isValid = !claimed;
        
        return (isValid, baseMint);
    }

    /**
     * @dev Helper to process emergency end (reduces stack depth)
     * @param tokenId NFT token ID to process
     * @param baseMint Base mint amount to return
     */
    function _processEmergencyEnd(uint256 tokenId, uint256 baseMint) private {
        // Mint only the base amount (no bonus)
        _mint(msg.sender, baseMint);
        
        // Update stats
        totalXburnMinted += baseMint;
        userXburnMinted[msg.sender] += baseMint;

        // Mark as claimed and burn NFT
        nftContract.setClaimed(tokenId);
        nftContract.burn(tokenId);

        // Emit events
        emit EmergencyEnd(msg.sender, baseMint);
        emit GlobalStatsUpdated(totalXenBurned, totalXburnMinted);
    }

    // ------------------------------------------------
    // ================ Burn XBURN ===================
    // ------------------------------------------------

    /**
     * @dev Burns XBURN tokens
     * @param amount Amount to burn
     */
    function burnXburn(uint256 amount) external nonReentrant {
        if (amount == 0) revert InvalidAmount(amount);
        
        // Burn from sender
        _burn(msg.sender, amount);
        
        // Update stats
        totalXburnBurned += amount;
        userXburnBurned[msg.sender] += amount;

        // Emit event
        emit XBURNBurned(msg.sender, amount);
    }

    // ------------------------------------------------
    // ================ View Functions ===============
    // ------------------------------------------------

    /**
     * @dev Gets user's locked tokens with pagination
     * @param user Address to query
     * @param page Page number (0-indexed)
     * @param pageSize Number of items per page
     * @return tokenIds Array of token IDs owned by user
     * @return totalPages Total number of pages
     */
    function getUserLocks(address user, uint256 page, uint256 pageSize) 
        public 
        view 
        returns (uint256[] memory tokenIds, uint256 totalPages) 
    {
        // Limit page size for gas optimization
        if (pageSize > MAX_BATCH_SIZE) {
            pageSize = MAX_BATCH_SIZE;
        }
        
        // Forward request to the NFT contract
        return nftContract.getAllUserLocks(user, page, pageSize);
    }

    /**
     * @dev Gets first page of user's locked tokens (convenience function)
     * @param user Address to query
     * @return Array of token IDs owned by user (first page)
     */
    function getUserLocks(address user) external view returns (uint256[] memory) {
        (uint256[] memory tokenIds, ) = getUserLocks(user, 0, 10); // Default: page 0, size 10
        return tokenIds;
    }

    /**
     * @dev Gets comprehensive user stats
     * @param user Address to query
     * @return userXenBurnedAmount Total XEN burned by user
     * @return userXburnBurnedAmount Total XBURN burned by user
     * @return userXburnBalance Current XBURN balance
     * @return userBurnPercentage User's percentage of total XEN burned
     * @return globalXenBurned Total XEN burned across all users
     * @return globalXburnBurned Total XBURN burned across all users
     * @return totalXburnSupply Current total XBURN supply
     * @return globalBurnPercentage Percentage of total XBURN burned
     */
    function getStats(address user) external view returns (
        uint256 userXenBurnedAmount,
        uint256 userXburnBurnedAmount,
        uint256 userXburnBalance,
        uint256 userBurnPercentage,
        uint256 globalXenBurned,
        uint256 globalXburnBurned,
        uint256 totalXburnSupply,
        uint256 globalBurnPercentage
    ) {
        // Get basic stats
        userXenBurnedAmount = userXenBurned[user];
        userXburnBurnedAmount = userXburnBurned[user];
        userXburnBalance = balanceOf(user);
        globalXenBurned = totalXenBurned;
        globalXburnBurned = totalXburnBurned;
        totalXburnSupply = totalSupply();
        
        // Calculate percentages
        (userBurnPercentage, globalBurnPercentage) = _calculatePercentages(user, totalXburnSupply);
        
        return (
            userXenBurnedAmount,
            userXburnBurnedAmount,
            userXburnBalance,
            userBurnPercentage,
            globalXenBurned,
            globalXburnBurned,
            totalXburnSupply,
            globalBurnPercentage
        );
    }

    /**
     * @dev Helper function to calculate percentages
     * @param user Address to calculate percentages for
     * @param supply Total XBURN supply
     * @return userBurnPercentage User's percentage of total XEN burned (basis points)
     * @return globalBurnPercentage Percentage of total XBURN burned (basis points)
     */
    function _calculatePercentages(address user, uint256 supply) private view returns (
        uint256 userBurnPercentage, 
        uint256 globalBurnPercentage
    ) {
        userBurnPercentage = totalXenBurned > 0 
            ? (userXenBurned[user] * 10000) / totalXenBurned
            : 0;

        globalBurnPercentage = supply > 0
            ? (totalXburnBurned * 10000) / supply
            : 0;
            
        return (userBurnPercentage, globalBurnPercentage);
    }

    /**
     * @dev Gets detailed stats about a specific token
     * @param tokenId NFT token ID to query
     * @return xenAmount Amount of XEN burned
     * @return baseMint Base mint amount
     * @return rewardAmount Total reward amount
     * @return maturityTs Maturity timestamp
     * @return isClaimable Whether token is currently claimable
     * @return isClaimed Whether token has been claimed
     */
    function getTokenStats(uint256 tokenId) external view returns (
        uint256 xenAmount,
        uint256 baseMint,
        uint256 rewardAmount,
        uint256 maturityTs,
        bool isClaimable,
        bool isClaimed
    ) {
        uint256 ampSnapshot;
        uint256 termDays;
        address tokenOwner;
        
        (
            xenAmount,
            maturityTs,
            ampSnapshot,
            termDays,
            isClaimed,
            rewardAmount,
            baseMint,
            tokenOwner
        ) = nftContract.getLockDetails(tokenId);
        
        isClaimable = !isClaimed && block.timestamp >= maturityTs;
        
        return (xenAmount, baseMint, rewardAmount, maturityTs, isClaimable, isClaimed);
    }

    /**
     * @dev Gets key stats for a user
     * @param user Address to query
     * @return xenBurned Total XEN burned by user
     * @return xburnBalance Current XBURN balance
     * @return totalTokens Total NFTs owned by user
     * @return claimableTokens Number of NFTs that are claimable
     */
    function getUserStats(address user) external view returns (
        uint256 xenBurned,
        uint256 xburnBalance,
        uint256 totalTokens,
        uint256 claimableTokens
    ) {
        // Get basic stats
        xenBurned = userXenBurned[user];
        xburnBalance = balanceOf(user);
        
        // Get tokens and count claimable tokens
        (totalTokens, claimableTokens) = _countUserTokens(user);
        
        return (xenBurned, xburnBalance, totalTokens, claimableTokens);
    }

    /**
     * @dev Helper function to count user tokens with gas optimization
     * @param user Address to count tokens for
     * @return totalTokens Total NFTs owned by user
     * @return claimableTokens Number of NFTs that are claimable
     */
    function _countUserTokens(address user) private view returns (uint256 totalTokens, uint256 claimableTokens) {
        // Get total tokens owned (first page only, limited to MAX_BATCH_SIZE)
        (uint256[] memory tokens, ) = nftContract.getAllUserLocks(user, 0, MAX_BATCH_SIZE);
        totalTokens = tokens.length;
        
        // Count claimable tokens (with gas limit protection)
        claimableTokens = 0;
        uint256 loopLimit = tokens.length > MAX_BATCH_SIZE ? MAX_BATCH_SIZE : tokens.length;
        
        for (uint256 i = 0; i < loopLimit; i++) {
            uint256 xenAmount;
            uint256 maturityTs;
            uint256 ampSnapshot;
            uint256 termDays;
            bool claimed;
            uint256 rewardAmount;
            uint256 baseMint;
            address tokenOwner;
            
            (
                xenAmount,
                maturityTs,
                ampSnapshot,
                termDays,
                claimed,
                rewardAmount,
                baseMint,
                tokenOwner
            ) = nftContract.getLockDetails(tokens[i]);
            
            if (!claimed && block.timestamp >= maturityTs) {
                claimableTokens++;
            }
        }
        
        return (totalTokens, claimableTokens);
    }

    /**
     * @dev Validates that the liquidity pair tokens are correct
     * @return bool True if liquidity pair tokens are correct
     */
    function validatePairTokens() external view returns (bool) {
        if (liquidityPair == address(0)) return false;

        address token0 = IUniswapV2PairExtended(liquidityPair).token0();
        address token1 = IUniswapV2PairExtended(liquidityPair).token1();

        return (token0 == address(this) && token1 == address(XEN)) ||
               (token0 == address(XEN) && token1 == address(this));
    }

    // ------------------------------------------------
    // ================ Internal Functions ===========
    // ------------------------------------------------

    /**
     * @dev Gets current amplifier value based on days since launch
     * @return Current amplifier value
     */
    function _currentAMP() private view returns (uint256) {
        uint256 daysActive = (block.timestamp - LAUNCH_TS) / 1 days;
        if (daysActive >= AMP_START) {
            return AMP_END;
        }
        return AMP_START - daysActive;
    }

    /**
     * @dev Verifies amplifier calculation for a given number of days
     * @param daysFromLaunch Days since launch to calculate for
     * @return Amplifier value at the specified day
     */
    function verifyAmpCalculation(uint256 daysFromLaunch) external view returns (uint256) {
        if (daysFromLaunch >= AMP_START) {
            return AMP_END;
        }
        return AMP_START - daysFromLaunch;
    }

    // ------------------------------------------------
    // ============== Global Stats View ==============
    // ------------------------------------------------

    /**
     * @dev Gets global protocol stats
     * @return currentAMP Current amplifier value
     * @return daysSinceLaunch Days since protocol launch
     * @return totalBurnedXEN Total XEN burned across all users
     * @return totalMintedXBURN Total XBURN minted
     * @return ampDecayDaysLeft Days until amplifier reaches minimum
     */
    function getGlobalStats() external view returns (
        uint256 currentAMP,
        uint256 daysSinceLaunch,
        uint256 totalBurnedXEN,
        uint256 totalMintedXBURN,
        uint256 ampDecayDaysLeft
    ) {
        currentAMP = _currentAMP();
        daysSinceLaunch = (block.timestamp - LAUNCH_TS) / 1 days;
        totalBurnedXEN = totalXenBurned;
        totalMintedXBURN = totalXburnMinted;
        ampDecayDaysLeft = currentAMP > AMP_END ? currentAMP - AMP_END : 0;
    }

    /**
     * @dev Gets progress towards next swap
     * @return accumulated Amount of XEN accumulated for swapping
     * @return threshold Threshold required for swap
     * @return percentage Percentage progress towards threshold (basis points)
     */
    function getAccumulationProgress() external view returns (
        uint256 accumulated,
        uint256 threshold,
        uint256 percentage
    ) {
        accumulated = pendingXen;
        threshold = SWAP_THRESHOLD;
        percentage = accumulated > 0 
            ? (accumulated * 10000) / threshold 
            : 0;
        return (accumulated, threshold, percentage);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC-20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC-721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC-1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC1363.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

/**
 * @dev Interface for the NFT Royalty Standard.
 *
 * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
 * support for royalty payments across all NFT marketplaces and ecosystem participants.
 */
interface IERC2981 is IERC165 {
    /**
     * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
     * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
     *
     * NOTE: ERC-2981 allows setting the royalty to 100% of the price. In that case all the price would be sent to the
     * royalty receiver and 0 tokens to the seller. Contracts dealing with royalty should consider empty transfers.
     */
    function royaltyInfo(
        uint256 tokenId,
        uint256 salePrice
    ) external view returns (address receiver, uint256 royaltyAmount);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/common/ERC2981.sol)

pragma solidity ^0.8.20;

import {IERC2981} from "../../interfaces/IERC2981.sol";
import {IERC165, ERC165} from "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information.
 *
 * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for
 * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first.
 *
 * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the
 * fee is specified in basis points by default.
 *
 * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See
 * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the ERC. Marketplaces are expected to
 * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported.
 */
abstract contract ERC2981 is IERC2981, ERC165 {
    struct RoyaltyInfo {
        address receiver;
        uint96 royaltyFraction;
    }

    RoyaltyInfo private _defaultRoyaltyInfo;
    mapping(uint256 tokenId => RoyaltyInfo) private _tokenRoyaltyInfo;

    /**
     * @dev The default royalty set is invalid (eg. (numerator / denominator) >= 1).
     */
    error ERC2981InvalidDefaultRoyalty(uint256 numerator, uint256 denominator);

    /**
     * @dev The default royalty receiver is invalid.
     */
    error ERC2981InvalidDefaultRoyaltyReceiver(address receiver);

    /**
     * @dev The royalty set for a specific `tokenId` is invalid (eg. (numerator / denominator) >= 1).
     */
    error ERC2981InvalidTokenRoyalty(uint256 tokenId, uint256 numerator, uint256 denominator);

    /**
     * @dev The royalty receiver for `tokenId` is invalid.
     */
    error ERC2981InvalidTokenRoyaltyReceiver(uint256 tokenId, address receiver);

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) {
        return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @inheritdoc IERC2981
     */
    function royaltyInfo(
        uint256 tokenId,
        uint256 salePrice
    ) public view virtual returns (address receiver, uint256 amount) {
        RoyaltyInfo storage _royaltyInfo = _tokenRoyaltyInfo[tokenId];
        address royaltyReceiver = _royaltyInfo.receiver;
        uint96 royaltyFraction = _royaltyInfo.royaltyFraction;

        if (royaltyReceiver == address(0)) {
            royaltyReceiver = _defaultRoyaltyInfo.receiver;
            royaltyFraction = _defaultRoyaltyInfo.royaltyFraction;
        }

        uint256 royaltyAmount = (salePrice * royaltyFraction) / _feeDenominator();

        return (royaltyReceiver, royaltyAmount);
    }

    /**
     * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a
     * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an
     * override.
     */
    function _feeDenominator() internal pure virtual returns (uint96) {
        return 10000;
    }

    /**
     * @dev Sets the royalty information that all ids in this contract will default to.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual {
        uint256 denominator = _feeDenominator();
        if (feeNumerator > denominator) {
            // Royalty fee will exceed the sale price
            revert ERC2981InvalidDefaultRoyalty(feeNumerator, denominator);
        }
        if (receiver == address(0)) {
            revert ERC2981InvalidDefaultRoyaltyReceiver(address(0));
        }

        _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Removes default royalty information.
     */
    function _deleteDefaultRoyalty() internal virtual {
        delete _defaultRoyaltyInfo;
    }

    /**
     * @dev Sets the royalty information for a specific token id, overriding the global default.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setTokenRoyalty(uint256 tokenId, address receiver, uint96 feeNumerator) internal virtual {
        uint256 denominator = _feeDenominator();
        if (feeNumerator > denominator) {
            // Royalty fee will exceed the sale price
            revert ERC2981InvalidTokenRoyalty(tokenId, feeNumerator, denominator);
        }
        if (receiver == address(0)) {
            revert ERC2981InvalidTokenRoyaltyReceiver(tokenId, address(0));
        }

        _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Resets royalty information for the token id back to the global default.
     */
    function _resetTokenRoyalty(uint256 tokenId) internal virtual {
        delete _tokenRoyaltyInfo[tokenId];
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
import {Context} from "../../utils/Context.sol";
import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC-20
 * applications.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

    mapping(address account => mapping(address spender => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * Both values are immutable: they can only be set once during construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Skips emitting an {Approval} event indicating an allowance update. This is not
     * required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve].
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner`'s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     *
     * ```solidity
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner`'s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance < type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC-20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.20;

import {IERC721} from "./IERC721.sol";
import {IERC721Metadata} from "./extensions/IERC721Metadata.sol";
import {ERC721Utils} from "./utils/ERC721Utils.sol";
import {Context} from "../../utils/Context.sol";
import {Strings} from "../../utils/Strings.sol";
import {IERC165, ERC165} from "../../utils/introspection/ERC165.sol";
import {IERC721Errors} from "../../interfaces/draft-IERC6093.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC-721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Errors {
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    mapping(uint256 tokenId => address) private _owners;

    mapping(address owner => uint256) private _balances;

    mapping(uint256 tokenId => address) private _tokenApprovals;

    mapping(address owner => mapping(address operator => bool)) private _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual returns (uint256) {
        if (owner == address(0)) {
            revert ERC721InvalidOwner(address(0));
        }
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual returns (address) {
        return _requireOwned(tokenId);
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual returns (string memory) {
        _requireOwned(tokenId);

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string.concat(baseURI, tokenId.toString()) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual {
        _approve(to, tokenId, _msgSender());
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual returns (address) {
        _requireOwned(tokenId);

        return _getApproved(tokenId);
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(address from, address to, uint256 tokenId) public virtual {
        if (to == address(0)) {
            revert ERC721InvalidReceiver(address(0));
        }
        // Setting an "auth" arguments enables the `_isAuthorized` check which verifies that the token exists
        // (from != 0). Therefore, it is not needed to verify that the return value is not 0 here.
        address previousOwner = _update(to, tokenId, _msgSender());
        if (previousOwner != from) {
            revert ERC721IncorrectOwner(from, tokenId, previousOwner);
        }
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) public {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual {
        transferFrom(from, to, tokenId);
        ERC721Utils.checkOnERC721Received(_msgSender(), from, to, tokenId, data);
    }

    /**
     * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
     *
     * IMPORTANT: Any overrides to this function that add ownership of tokens not tracked by the
     * core ERC-721 logic MUST be matched with the use of {_increaseBalance} to keep balances
     * consistent with ownership. The invariant to preserve is that for any address `a` the value returned by
     * `balanceOf(a)` must be equal to the number of tokens such that `_ownerOf(tokenId)` is `a`.
     */
    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
        return _owners[tokenId];
    }

    /**
     * @dev Returns the approved address for `tokenId`. Returns 0 if `tokenId` is not minted.
     */
    function _getApproved(uint256 tokenId) internal view virtual returns (address) {
        return _tokenApprovals[tokenId];
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `owner`'s tokens, or `tokenId` in
     * particular (ignoring whether it is owned by `owner`).
     *
     * WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
     * assumption.
     */
    function _isAuthorized(address owner, address spender, uint256 tokenId) internal view virtual returns (bool) {
        return
            spender != address(0) &&
            (owner == spender || isApprovedForAll(owner, spender) || _getApproved(tokenId) == spender);
    }

    /**
     * @dev Checks if `spender` can operate on `tokenId`, assuming the provided `owner` is the actual owner.
     * Reverts if:
     * - `spender` does not have approval from `owner` for `tokenId`.
     * - `spender` does not have approval to manage all of `owner`'s assets.
     *
     * WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
     * assumption.
     */
    function _checkAuthorized(address owner, address spender, uint256 tokenId) internal view virtual {
        if (!_isAuthorized(owner, spender, tokenId)) {
            if (owner == address(0)) {
                revert ERC721NonexistentToken(tokenId);
            } else {
                revert ERC721InsufficientApproval(spender, tokenId);
            }
        }
    }

    /**
     * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
     *
     * NOTE: the value is limited to type(uint128).max. This protect against _balance overflow. It is unrealistic that
     * a uint256 would ever overflow from increments when these increments are bounded to uint128 values.
     *
     * WARNING: Increasing an account's balance using this function tends to be paired with an override of the
     * {_ownerOf} function to resolve the ownership of the corresponding tokens so that balances and ownership
     * remain consistent with one another.
     */
    function _increaseBalance(address account, uint128 value) internal virtual {
        unchecked {
            _balances[account] += value;
        }
    }

    /**
     * @dev Transfers `tokenId` from its current owner to `to`, or alternatively mints (or burns) if the current owner
     * (or `to`) is the zero address. Returns the owner of the `tokenId` before the update.
     *
     * The `auth` argument is optional. If the value passed is non 0, then this function will check that
     * `auth` is either the owner of the token, or approved to operate on the token (by the owner).
     *
     * Emits a {Transfer} event.
     *
     * NOTE: If overriding this function in a way that tracks balances, see also {_increaseBalance}.
     */
    function _update(address to, uint256 tokenId, address auth) internal virtual returns (address) {
        address from = _ownerOf(tokenId);

        // Perform (optional) operator check
        if (auth != address(0)) {
            _checkAuthorized(from, auth, tokenId);
        }

        // Execute the update
        if (from != address(0)) {
            // Clear approval. No need to re-authorize or emit the Approval event
            _approve(address(0), tokenId, address(0), false);

            unchecked {
                _balances[from] -= 1;
            }
        }

        if (to != address(0)) {
            unchecked {
                _balances[to] += 1;
            }
        }

        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        return from;
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal {
        if (to == address(0)) {
            revert ERC721InvalidReceiver(address(0));
        }
        address previousOwner = _update(to, tokenId, address(0));
        if (previousOwner != address(0)) {
            revert ERC721InvalidSender(address(0));
        }
    }

    /**
     * @dev Mints `tokenId`, transfers it to `to` and checks for `to` acceptance.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
        _mint(to, tokenId);
        ERC721Utils.checkOnERC721Received(_msgSender(), address(0), to, tokenId, data);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     * This is an internal function that does not check if the sender is authorized to operate on the token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal {
        address previousOwner = _update(address(0), tokenId, address(0));
        if (previousOwner == address(0)) {
            revert ERC721NonexistentToken(tokenId);
        }
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(address from, address to, uint256 tokenId) internal {
        if (to == address(0)) {
            revert ERC721InvalidReceiver(address(0));
        }
        address previousOwner = _update(to, tokenId, address(0));
        if (previousOwner == address(0)) {
            revert ERC721NonexistentToken(tokenId);
        } else if (previousOwner != from) {
            revert ERC721IncorrectOwner(from, tokenId, previousOwner);
        }
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking that contract recipients
     * are aware of the ERC-721 standard to prevent tokens from being forever locked.
     *
     * `data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is like {safeTransferFrom} in the sense that it invokes
     * {IERC721Receiver-onERC721Received} on the receiver, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `tokenId` token must exist and be owned by `from`.
     * - `to` cannot be the zero address.
     * - `from` cannot be the zero address.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(address from, address to, uint256 tokenId) internal {
        _safeTransfer(from, to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeTransfer-address-address-uint256-}[`_safeTransfer`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
        _transfer(from, to, tokenId);
        ERC721Utils.checkOnERC721Received(_msgSender(), from, to, tokenId, data);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * The `auth` argument is optional. If the value passed is non 0, then this function will check that `auth` is
     * either the owner of the token, or approved to operate on all tokens held by this owner.
     *
     * Emits an {Approval} event.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address to, uint256 tokenId, address auth) internal {
        _approve(to, tokenId, auth, true);
    }

    /**
     * @dev Variant of `_approve` with an optional flag to enable or disable the {Approval} event. The event is not
     * emitted in the context of transfers.
     */
    function _approve(address to, uint256 tokenId, address auth, bool emitEvent) internal virtual {
        // Avoid reading the owner unless necessary
        if (emitEvent || auth != address(0)) {
            address owner = _requireOwned(tokenId);

            // We do not use _isAuthorized because single-token approvals should not be able to call approve
            if (auth != address(0) && owner != auth && !isApprovedForAll(owner, auth)) {
                revert ERC721InvalidApprover(auth);
            }

            if (emitEvent) {
                emit Approval(owner, to, tokenId);
            }
        }

        _tokenApprovals[tokenId] = to;
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Requirements:
     * - operator can't be the address zero.
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
        if (operator == address(0)) {
            revert ERC721InvalidOperator(operator);
        }
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Reverts if the `tokenId` doesn't have a current owner (it hasn't been minted, or it has been burned).
     * Returns the owner.
     *
     * Overrides to ownership logic should be done to {_ownerOf}.
     */
    function _requireOwned(uint256 tokenId) internal view returns (address) {
        address owner = _ownerOf(tokenId);
        if (owner == address(0)) {
            revert ERC721NonexistentToken(tokenId);
        }
        return owner;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/extensions/ERC721Enumerable.sol)

pragma solidity ^0.8.20;

import {ERC721} from "../ERC721.sol";
import {IERC721Enumerable} from "./IERC721Enumerable.sol";
import {IERC165} from "../../../utils/introspection/ERC165.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the ERC that adds enumerability
 * of all the token ids in the contract as well as all token ids owned by each account.
 *
 * CAUTION: {ERC721} extensions that implement custom `balanceOf` logic, such as {ERC721Consecutive},
 * interfere with enumerability and should not be used together with {ERC721Enumerable}.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    mapping(address owner => mapping(uint256 index => uint256)) private _ownedTokens;
    mapping(uint256 tokenId => uint256) private _ownedTokensIndex;

    uint256[] private _allTokens;
    mapping(uint256 tokenId => uint256) private _allTokensIndex;

    /**
     * @dev An `owner`'s token query was out of bounds for `index`.
     *
     * NOTE: The owner being `address(0)` indicates a global out of bounds index.
     */
    error ERC721OutOfBoundsIndex(address owner, uint256 index);

    /**
     * @dev Batch mint is not allowed.
     */
    error ERC721EnumerableForbiddenBatchMint();

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual returns (uint256) {
        if (index >= balanceOf(owner)) {
            revert ERC721OutOfBoundsIndex(owner, index);
        }
        return _ownedTokens[owner][index];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual returns (uint256) {
        if (index >= totalSupply()) {
            revert ERC721OutOfBoundsIndex(address(0), index);
        }
        return _allTokens[index];
    }

    /**
     * @dev See {ERC721-_update}.
     */
    function _update(address to, uint256 tokenId, address auth) internal virtual override returns (address) {
        address previousOwner = super._update(to, tokenId, auth);

        if (previousOwner == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (previousOwner != to) {
            _removeTokenFromOwnerEnumeration(previousOwner, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (previousOwner != to) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }

        return previousOwner;
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = balanceOf(to) - 1;
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = balanceOf(from);
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        mapping(uint256 index => uint256) storage _ownedTokensByOwner = _ownedTokens[from];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokensByOwner[lastTokenIndex];

            _ownedTokensByOwner[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokensByOwner[lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }

    /**
     * See {ERC721-_increaseBalance}. We need that to account tokens that were minted in batch
     */
    function _increaseBalance(address account, uint128 amount) internal virtual override {
        if (amount > 0) {
            revert ERC721EnumerableForbiddenBatchMint();
        }
        super._increaseBalance(account, amount);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.20;

import {IERC721} from "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.20;

import {IERC721} from "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC-721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
     *   a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC-721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or
     *   {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
     *   a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC-721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the address zero.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.20;

/**
 * @title ERC-721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC-721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be
     * reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC721/utils/ERC721Utils.sol)

pragma solidity ^0.8.20;

import {IERC721Receiver} from "../IERC721Receiver.sol";
import {IERC721Errors} from "../../../interfaces/draft-IERC6093.sol";

/**
 * @dev Library that provide common ERC-721 utility functions.
 *
 * See https://eips.ethereum.org/EIPS/eip-721[ERC-721].
 *
 * _Available since v5.1._
 */
library ERC721Utils {
    /**
     * @dev Performs an acceptance check for the provided `operator` by calling {IERC721Receiver-onERC721Received}
     * on the `to` address. The `operator` is generally the address that initiated the token transfer (i.e. `msg.sender`).
     *
     * The acceptance call is not executed and treated as a no-op if the target address doesn't contain code (i.e. an EOA).
     * Otherwise, the recipient must implement {IERC721Receiver-onERC721Received} and return the acceptance magic value to accept
     * the transfer.
     */
    function checkOnERC721Received(
        address operator,
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) internal {
        if (to.code.length > 0) {
            try IERC721Receiver(to).onERC721Received(operator, from, tokenId, data) returns (bytes4 retval) {
                if (retval != IERC721Receiver.onERC721Received.selector) {
                    // Token rejected
                    revert IERC721Errors.ERC721InvalidReceiver(to);
                }
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    // non-IERC721Receiver implementer
                    revert IERC721Errors.ERC721InvalidReceiver(to);
                } else {
                    assembly ("memory-safe") {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Base64.sol)

pragma solidity ^0.8.20;

/**
 * @dev Provides a set of functions to operate with Base64 strings.
 */
library Base64 {
    /**
     * @dev Base64 Encoding/Decoding Table
     * See sections 4 and 5 of https://datatracker.ietf.org/doc/html/rfc4648
     */
    string internal constant _TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    string internal constant _TABLE_URL = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";

    /**
     * @dev Converts a `bytes` to its Bytes64 `string` representation.
     */
    function encode(bytes memory data) internal pure returns (string memory) {
        return _encode(data, _TABLE, true);
    }

    /**
     * @dev Converts a `bytes` to its Bytes64Url `string` representation.
     * Output is not padded with `=` as specified in https://www.rfc-editor.org/rfc/rfc4648[rfc4648].
     */
    function encodeURL(bytes memory data) internal pure returns (string memory) {
        return _encode(data, _TABLE_URL, false);
    }

    /**
     * @dev Internal table-agnostic conversion
     */
    function _encode(bytes memory data, string memory table, bool withPadding) private pure returns (string memory) {
        /**
         * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence
         * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol
         */
        if (data.length == 0) return "";

        // If padding is enabled, the final length should be `bytes` data length divided by 3 rounded up and then
        // multiplied by 4 so that it leaves room for padding the last chunk
        // - `data.length + 2`  -> Prepare for division rounding up
        // - `/ 3`              -> Number of 3-bytes chunks (rounded up)
        // - `4 *`              -> 4 characters for each chunk
        // This is equivalent to: 4 * Math.ceil(data.length / 3)
        //
        // If padding is disabled, the final length should be `bytes` data length multiplied by 4/3 rounded up as
        // opposed to when padding is required to fill the last chunk.
        // - `4 * data.length`  -> 4 characters for each chunk
        // - ` + 2`             -> Prepare for division rounding up
        // - `/ 3`              -> Number of 3-bytes chunks (rounded up)
        // This is equivalent to: Math.ceil((4 * data.length) / 3)
        uint256 resultLength = withPadding ? 4 * ((data.length + 2) / 3) : (4 * data.length + 2) / 3;

        string memory result = new string(resultLength);

        assembly ("memory-safe") {
            // Prepare the lookup table (skip the first "length" byte)
            let tablePtr := add(table, 1)

            // Prepare result pointer, jump over length
            let resultPtr := add(result, 0x20)
            let dataPtr := data
            let endPtr := add(data, mload(data))

            // In some cases, the last iteration will read bytes after the end of the data. We cache the value, and
            // set it to zero to make sure no dirty bytes are read in that section.
            let afterPtr := add(endPtr, 0x20)
            let afterCache := mload(afterPtr)
            mstore(afterPtr, 0x00)

            // Run over the input, 3 bytes at a time
            for {

            } lt(dataPtr, endPtr) {

            } {
                // Advance 3 bytes
                dataPtr := add(dataPtr, 3)
                let input := mload(dataPtr)

                // To write each character, shift the 3 byte (24 bits) chunk
                // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)
                // and apply logical AND with 0x3F to bitmask the least significant 6 bits.
                // Use this as an index into the lookup table, mload an entire word
                // so the desired character is in the least significant byte, and
                // mstore8 this least significant byte into the result and continue.

                mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance
            }

            // Reset the value that was cached
            mstore(afterPtr, afterCache)

            if withPadding {
                // When data `bytes` is not exactly 3 bytes long
                // it is padded with `=` characters at the end
                switch mod(mload(data), 3)
                case 1 {
                    mstore8(sub(resultPtr, 1), 0x3d)
                    mstore8(sub(resultPtr, 2), 0x3d)
                }
                case 2 {
                    mstore8(sub(resultPtr, 1), 0x3d)
                }
            }
        }

        return result;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/ERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (utils/math/Math.sol)

pragma solidity ^0.8.20;

import {Panic} from "../Panic.sol";
import {SafeCast} from "./SafeCast.sol";

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Floor, // Toward negative infinity
        Ceil, // Toward positive infinity
        Trunc, // Toward zero
        Expand // Away from zero
    }

    /**
     * @dev Return the 512-bit addition of two uint256.
     *
     * The result is stored in two 256 variables such that sum = high * 2²⁵⁶ + low.
     */
    function add512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) {
        assembly ("memory-safe") {
            low := add(a, b)
            high := lt(low, a)
        }
    }

    /**
     * @dev Return the 512-bit multiplication of two uint256.
     *
     * The result is stored in two 256 variables such that product = high * 2²⁵⁶ + low.
     */
    function mul512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) {
        // 512-bit multiply [high low] = x * y. Compute the product mod 2²⁵⁶ and mod 2²⁵⁶ - 1, then use
        // the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
        // variables such that product = high * 2²⁵⁶ + low.
        assembly ("memory-safe") {
            let mm := mulmod(a, b, not(0))
            low := mul(a, b)
            high := sub(sub(mm, low), lt(mm, low))
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, with a success flag (no overflow).
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            uint256 c = a + b;
            success = c >= a;
            result = c * SafeCast.toUint(success);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with a success flag (no overflow).
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            uint256 c = a - b;
            success = c <= a;
            result = c * SafeCast.toUint(success);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with a success flag (no overflow).
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            uint256 c = a * b;
            assembly ("memory-safe") {
                // Only true when the multiplication doesn't overflow
                // (c / a == b) || (a == 0)
                success := or(eq(div(c, a), b), iszero(a))
            }
            // equivalent to: success ? c : 0
            result = c * SafeCast.toUint(success);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a success flag (no division by zero).
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            success = b > 0;
            assembly ("memory-safe") {
                // The `DIV` opcode returns zero when the denominator is 0.
                result := div(a, b)
            }
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a success flag (no division by zero).
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
        unchecked {
            success = b > 0;
            assembly ("memory-safe") {
                // The `MOD` opcode returns zero when the denominator is 0.
                result := mod(a, b)
            }
        }
    }

    /**
     * @dev Unsigned saturating addition, bounds to `2²⁵⁶ - 1` instead of overflowing.
     */
    function saturatingAdd(uint256 a, uint256 b) internal pure returns (uint256) {
        (bool success, uint256 result) = tryAdd(a, b);
        return ternary(success, result, type(uint256).max);
    }

    /**
     * @dev Unsigned saturating subtraction, bounds to zero instead of overflowing.
     */
    function saturatingSub(uint256 a, uint256 b) internal pure returns (uint256) {
        (, uint256 result) = trySub(a, b);
        return result;
    }

    /**
     * @dev Unsigned saturating multiplication, bounds to `2²⁵⁶ - 1` instead of overflowing.
     */
    function saturatingMul(uint256 a, uint256 b) internal pure returns (uint256) {
        (bool success, uint256 result) = tryMul(a, b);
        return ternary(success, result, type(uint256).max);
    }

    /**
     * @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant.
     *
     * IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone.
     * However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute
     * one branch when needed, making this function more expensive.
     */
    function ternary(bool condition, uint256 a, uint256 b) internal pure returns (uint256) {
        unchecked {
            // branchless ternary works because:
            // b ^ (a ^ b) == a
            // b ^ 0 == b
            return b ^ ((a ^ b) * SafeCast.toUint(condition));
        }
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return ternary(a > b, a, b);
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return ternary(a < b, a, b);
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds towards infinity instead
     * of rounding towards zero.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        if (b == 0) {
            // Guarantee the same behavior as in a regular Solidity division.
            Panic.panic(Panic.DIVISION_BY_ZERO);
        }

        // The following calculation ensures accurate ceiling division without overflow.
        // Since a is non-zero, (a - 1) / b will not overflow.
        // The largest possible result occurs when (a - 1) / b is type(uint256).max,
        // but the largest value we can obtain is type(uint256).max - 1, which happens
        // when a = type(uint256).max and b = 1.
        unchecked {
            return SafeCast.toUint(a > 0) * ((a - 1) / b + 1);
        }
    }

    /**
     * @dev Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
     * denominator == 0.
     *
     * Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
     * Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            (uint256 high, uint256 low) = mul512(x, y);

            // Handle non-overflow cases, 256 by 256 division.
            if (high == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return low / denominator;
            }

            // Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0.
            if (denominator <= high) {
                Panic.panic(ternary(denominator == 0, Panic.DIVISION_BY_ZERO, Panic.UNDER_OVERFLOW));
            }

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [high low].
            uint256 remainder;
            assembly ("memory-safe") {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                high := sub(high, gt(remainder, low))
                low := sub(low, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.

            uint256 twos = denominator & (0 - denominator);
            assembly ("memory-safe") {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [high low] by twos.
                low := div(low, twos)

                // Flip twos such that it is 2²⁵⁶ / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from high into low.
            low |= high * twos;

            // Invert denominator mod 2²⁵⁶. Now that denominator is an odd number, it has an inverse modulo 2²⁵⁶ such
            // that denominator * inv ≡ 1 mod 2²⁵⁶. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv ≡ 1 mod 2⁴.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
            // works in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2⁸
            inverse *= 2 - denominator * inverse; // inverse mod 2¹⁶
            inverse *= 2 - denominator * inverse; // inverse mod 2³²
            inverse *= 2 - denominator * inverse; // inverse mod 2⁶⁴
            inverse *= 2 - denominator * inverse; // inverse mod 2¹²⁸
            inverse *= 2 - denominator * inverse; // inverse mod 2²⁵⁶

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2²⁵⁶. Since the preconditions guarantee that the outcome is
            // less than 2²⁵⁶, this is the final result. We don't need to compute the high bits of the result and high
            // is no longer required.
            result = low * inverse;
            return result;
        }
    }

    /**
     * @dev Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        return mulDiv(x, y, denominator) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0);
    }

    /**
     * @dev Calculates floor(x * y >> n) with full precision. Throws if result overflows a uint256.
     */
    function mulShr(uint256 x, uint256 y, uint8 n) internal pure returns (uint256 result) {
        unchecked {
            (uint256 high, uint256 low) = mul512(x, y);
            if (high >= 1 << n) {
                Panic.panic(Panic.UNDER_OVERFLOW);
            }
            return (high << (256 - n)) | (low >> n);
        }
    }

    /**
     * @dev Calculates x * y >> n with full precision, following the selected rounding direction.
     */
    function mulShr(uint256 x, uint256 y, uint8 n, Rounding rounding) internal pure returns (uint256) {
        return mulShr(x, y, n) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, 1 << n) > 0);
    }

    /**
     * @dev Calculate the modular multiplicative inverse of a number in Z/nZ.
     *
     * If n is a prime, then Z/nZ is a field. In that case all elements are inversible, except 0.
     * If n is not a prime, then Z/nZ is not a field, and some elements might not be inversible.
     *
     * If the input value is not inversible, 0 is returned.
     *
     * NOTE: If you know for sure that n is (big) a prime, it may be cheaper to use Fermat's little theorem and get the
     * inverse using `Math.modExp(a, n - 2, n)`. See {invModPrime}.
     */
    function invMod(uint256 a, uint256 n) internal pure returns (uint256) {
        unchecked {
            if (n == 0) return 0;

            // The inverse modulo is calculated using the Extended Euclidean Algorithm (iterative version)
            // Used to compute integers x and y such that: ax + ny = gcd(a, n).
            // When the gcd is 1, then the inverse of a modulo n exists and it's x.
            // ax + ny = 1
            // ax = 1 + (-y)n
            // ax ≡ 1 (mod n) # x is the inverse of a modulo n

            // If the remainder is 0 the gcd is n right away.
            uint256 remainder = a % n;
            uint256 gcd = n;

            // Therefore the initial coefficients are:
            // ax + ny = gcd(a, n) = n
            // 0a + 1n = n
            int256 x = 0;
            int256 y = 1;

            while (remainder != 0) {
                uint256 quotient = gcd / remainder;

                (gcd, remainder) = (
                    // The old remainder is the next gcd to try.
                    remainder,
                    // Compute the next remainder.
                    // Can't overflow given that (a % gcd) * (gcd // (a % gcd)) <= gcd
                    // where gcd is at most n (capped to type(uint256).max)
                    gcd - remainder * quotient
                );

                (x, y) = (
                    // Increment the coefficient of a.
                    y,
                    // Decrement the coefficient of n.
                    // Can overflow, but the result is casted to uint256 so that the
                    // next value of y is "wrapped around" to a value between 0 and n - 1.
                    x - y * int256(quotient)
                );
            }

            if (gcd != 1) return 0; // No inverse exists.
            return ternary(x < 0, n - uint256(-x), uint256(x)); // Wrap the result if it's negative.
        }
    }

    /**
     * @dev Variant of {invMod}. More efficient, but only works if `p` is known to be a prime greater than `2`.
     *
     * From https://en.wikipedia.org/wiki/Fermat%27s_little_theorem[Fermat's little theorem], we know that if p is
     * prime, then `a**(p-1) ≡ 1 mod p`. As a consequence, we have `a * a**(p-2) ≡ 1 mod p`, which means that
     * `a**(p-2)` is the modular multiplicative inverse of a in Fp.
     *
     * NOTE: this function does NOT check that `p` is a prime greater than `2`.
     */
    function invModPrime(uint256 a, uint256 p) internal view returns (uint256) {
        unchecked {
            return Math.modExp(a, p - 2, p);
        }
    }

    /**
     * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m)
     *
     * Requirements:
     * - modulus can't be zero
     * - underlying staticcall to precompile must succeed
     *
     * IMPORTANT: The result is only valid if the underlying call succeeds. When using this function, make
     * sure the chain you're using it on supports the precompiled contract for modular exponentiation
     * at address 0x05 as specified in https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise,
     * the underlying function will succeed given the lack of a revert, but the result may be incorrectly
     * interpreted as 0.
     */
    function modExp(uint256 b, uint256 e, uint256 m) internal view returns (uint256) {
        (bool success, uint256 result) = tryModExp(b, e, m);
        if (!success) {
            Panic.panic(Panic.DIVISION_BY_ZERO);
        }
        return result;
    }

    /**
     * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m).
     * It includes a success flag indicating if the operation succeeded. Operation will be marked as failed if trying
     * to operate modulo 0 or if the underlying precompile reverted.
     *
     * IMPORTANT: The result is only valid if the success flag is true. When using this function, make sure the chain
     * you're using it on supports the precompiled contract for modular exponentiation at address 0x05 as specified in
     * https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, the underlying function will succeed given the lack
     * of a revert, but the result may be incorrectly interpreted as 0.
     */
    function tryModExp(uint256 b, uint256 e, uint256 m) internal view returns (bool success, uint256 result) {
        if (m == 0) return (false, 0);
        assembly ("memory-safe") {
            let ptr := mload(0x40)
            // | Offset    | Content    | Content (Hex)                                                      |
            // |-----------|------------|--------------------------------------------------------------------|
            // | 0x00:0x1f | size of b  | 0x0000000000000000000000000000000000000000000000000000000000000020 |
            // | 0x20:0x3f | size of e  | 0x0000000000000000000000000000000000000000000000000000000000000020 |
            // | 0x40:0x5f | size of m  | 0x0000000000000000000000000000000000000000000000000000000000000020 |
            // | 0x60:0x7f | value of b | 0x<.............................................................b> |
            // | 0x80:0x9f | value of e | 0x<.............................................................e> |
            // | 0xa0:0xbf | value of m | 0x<.............................................................m> |
            mstore(ptr, 0x20)
            mstore(add(ptr, 0x20), 0x20)
            mstore(add(ptr, 0x40), 0x20)
            mstore(add(ptr, 0x60), b)
            mstore(add(ptr, 0x80), e)
            mstore(add(ptr, 0xa0), m)

            // Given the result < m, it's guaranteed to fit in 32 bytes,
            // so we can use the memory scratch space located at offset 0.
            success := staticcall(gas(), 0x05, ptr, 0xc0, 0x00, 0x20)
            result := mload(0x00)
        }
    }

    /**
     * @dev Variant of {modExp} that supports inputs of arbitrary length.
     */
    function modExp(bytes memory b, bytes memory e, bytes memory m) internal view returns (bytes memory) {
        (bool success, bytes memory result) = tryModExp(b, e, m);
        if (!success) {
            Panic.panic(Panic.DIVISION_BY_ZERO);
        }
        return result;
    }

    /**
     * @dev Variant of {tryModExp} that supports inputs of arbitrary length.
     */
    function tryModExp(
        bytes memory b,
        bytes memory e,
        bytes memory m
    ) internal view returns (bool success, bytes memory result) {
        if (_zeroBytes(m)) return (false, new bytes(0));

        uint256 mLen = m.length;

        // Encode call args in result and move the free memory pointer
        result = abi.encodePacked(b.length, e.length, mLen, b, e, m);

        assembly ("memory-safe") {
            let dataPtr := add(result, 0x20)
            // Write result on top of args to avoid allocating extra memory.
            success := staticcall(gas(), 0x05, dataPtr, mload(result), dataPtr, mLen)
            // Overwrite the length.
            // result.length > returndatasize() is guaranteed because returndatasize() == m.length
            mstore(result, mLen)
            // Set the memory pointer after the returned data.
            mstore(0x40, add(dataPtr, mLen))
        }
    }

    /**
     * @dev Returns whether the provided byte array is zero.
     */
    function _zeroBytes(bytes memory byteArray) private pure returns (bool) {
        for (uint256 i = 0; i < byteArray.length; ++i) {
            if (byteArray[i] != 0) {
                return false;
            }
        }
        return true;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
     * towards zero.
     *
     * This method is based on Newton's method for computing square roots; the algorithm is restricted to only
     * using integer operations.
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        unchecked {
            // Take care of easy edge cases when a == 0 or a == 1
            if (a <= 1) {
                return a;
            }

            // In this function, we use Newton's method to get a root of `f(x) := x² - a`. It involves building a
            // sequence x_n that converges toward sqrt(a). For each iteration x_n, we also define the error between
            // the current value as `ε_n = | x_n - sqrt(a) |`.
            //
            // For our first estimation, we consider `e` the smallest power of 2 which is bigger than the square root
            // of the target. (i.e. `2**(e-1) ≤ sqrt(a) < 2**e`). We know that `e ≤ 128` because `(2¹²⁸)² = 2²⁵⁶` is
            // bigger than any uint256.
            //
            // By noticing that
            // `2**(e-1) ≤ sqrt(a) < 2**e → (2**(e-1))² ≤ a < (2**e)² → 2**(2*e-2) ≤ a < 2**(2*e)`
            // we can deduce that `e - 1` is `log2(a) / 2`. We can thus compute `x_n = 2**(e-1)` using a method similar
            // to the msb function.
            uint256 aa = a;
            uint256 xn = 1;

            if (aa >= (1 << 128)) {
                aa >>= 128;
                xn <<= 64;
            }
            if (aa >= (1 << 64)) {
                aa >>= 64;
                xn <<= 32;
            }
            if (aa >= (1 << 32)) {
                aa >>= 32;
                xn <<= 16;
            }
            if (aa >= (1 << 16)) {
                aa >>= 16;
                xn <<= 8;
            }
            if (aa >= (1 << 8)) {
                aa >>= 8;
                xn <<= 4;
            }
            if (aa >= (1 << 4)) {
                aa >>= 4;
                xn <<= 2;
            }
            if (aa >= (1 << 2)) {
                xn <<= 1;
            }

            // We now have x_n such that `x_n = 2**(e-1) ≤ sqrt(a) < 2**e = 2 * x_n`. This implies ε_n ≤ 2**(e-1).
            //
            // We can refine our estimation by noticing that the middle of that interval minimizes the error.
            // If we move x_n to equal 2**(e-1) + 2**(e-2), then we reduce the error to ε_n ≤ 2**(e-2).
            // This is going to be our x_0 (and ε_0)
            xn = (3 * xn) >> 1; // ε_0 := | x_0 - sqrt(a) | ≤ 2**(e-2)

            // From here, Newton's method give us:
            // x_{n+1} = (x_n + a / x_n) / 2
            //
            // One should note that:
            // x_{n+1}² - a = ((x_n + a / x_n) / 2)² - a
            //              = ((x_n² + a) / (2 * x_n))² - a
            //              = (x_n⁴ + 2 * a * x_n² + a²) / (4 * x_n²) - a
            //              = (x_n⁴ + 2 * a * x_n² + a² - 4 * a * x_n²) / (4 * x_n²)
            //              = (x_n⁴ - 2 * a * x_n² + a²) / (4 * x_n²)
            //              = (x_n² - a)² / (2 * x_n)²
            //              = ((x_n² - a) / (2 * x_n))²
            //              ≥ 0
            // Which proves that for all n ≥ 1, sqrt(a) ≤ x_n
            //
            // This gives us the proof of quadratic convergence of the sequence:
            // ε_{n+1} = | x_{n+1} - sqrt(a) |
            //         = | (x_n + a / x_n) / 2 - sqrt(a) |
            //         = | (x_n² + a - 2*x_n*sqrt(a)) / (2 * x_n) |
            //         = | (x_n - sqrt(a))² / (2 * x_n) |
            //         = | ε_n² / (2 * x_n) |
            //         = ε_n² / | (2 * x_n) |
            //
            // For the first iteration, we have a special case where x_0 is known:
            // ε_1 = ε_0² / | (2 * x_0) |
            //     ≤ (2**(e-2))² / (2 * (2**(e-1) + 2**(e-2)))
            //     ≤ 2**(2*e-4) / (3 * 2**(e-1))
            //     ≤ 2**(e-3) / 3
            //     ≤ 2**(e-3-log2(3))
            //     ≤ 2**(e-4.5)
            //
            // For the following iterations, we use the fact that, 2**(e-1) ≤ sqrt(a) ≤ x_n:
            // ε_{n+1} = ε_n² / | (2 * x_n) |
            //         ≤ (2**(e-k))² / (2 * 2**(e-1))
            //         ≤ 2**(2*e-2*k) / 2**e
            //         ≤ 2**(e-2*k)
            xn = (xn + a / xn) >> 1; // ε_1 := | x_1 - sqrt(a) | ≤ 2**(e-4.5)  -- special case, see above
            xn = (xn + a / xn) >> 1; // ε_2 := | x_2 - sqrt(a) | ≤ 2**(e-9)    -- general case with k = 4.5
            xn = (xn + a / xn) >> 1; // ε_3 := | x_3 - sqrt(a) | ≤ 2**(e-18)   -- general case with k = 9
            xn = (xn + a / xn) >> 1; // ε_4 := | x_4 - sqrt(a) | ≤ 2**(e-36)   -- general case with k = 18
            xn = (xn + a / xn) >> 1; // ε_5 := | x_5 - sqrt(a) | ≤ 2**(e-72)   -- general case with k = 36
            xn = (xn + a / xn) >> 1; // ε_6 := | x_6 - sqrt(a) | ≤ 2**(e-144)  -- general case with k = 72

            // Because e ≤ 128 (as discussed during the first estimation phase), we know have reached a precision
            // ε_6 ≤ 2**(e-144) < 1. Given we're operating on integers, then we can ensure that xn is now either
            // sqrt(a) or sqrt(a) + 1.
            return xn - SafeCast.toUint(xn > a / xn);
        }
    }

    /**
     * @dev Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + SafeCast.toUint(unsignedRoundsUp(rounding) && result * result < a);
        }
    }

    /**
     * @dev Return the log in base 2 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log2(uint256 x) internal pure returns (uint256 r) {
        // If value has upper 128 bits set, log2 result is at least 128
        r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
        // If upper 64 bits of 128-bit half set, add 64 to result
        r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
        // If upper 32 bits of 64-bit half set, add 32 to result
        r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
        // If upper 16 bits of 32-bit half set, add 16 to result
        r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
        // If upper 8 bits of 16-bit half set, add 8 to result
        r |= SafeCast.toUint((x >> r) > 0xff) << 3;
        // If upper 4 bits of 8-bit half set, add 4 to result
        r |= SafeCast.toUint((x >> r) > 0xf) << 2;

        // Shifts value right by the current result and use it as an index into this lookup table:
        //
        // | x (4 bits) |  index  | table[index] = MSB position |
        // |------------|---------|-----------------------------|
        // |    0000    |    0    |        table[0] = 0         |
        // |    0001    |    1    |        table[1] = 0         |
        // |    0010    |    2    |        table[2] = 1         |
        // |    0011    |    3    |        table[3] = 1         |
        // |    0100    |    4    |        table[4] = 2         |
        // |    0101    |    5    |        table[5] = 2         |
        // |    0110    |    6    |        table[6] = 2         |
        // |    0111    |    7    |        table[7] = 2         |
        // |    1000    |    8    |        table[8] = 3         |
        // |    1001    |    9    |        table[9] = 3         |
        // |    1010    |   10    |        table[10] = 3        |
        // |    1011    |   11    |        table[11] = 3        |
        // |    1100    |   12    |        table[12] = 3        |
        // |    1101    |   13    |        table[13] = 3        |
        // |    1110    |   14    |        table[14] = 3        |
        // |    1111    |   15    |        table[15] = 3        |
        //
        // The lookup table is represented as a 32-byte value with the MSB positions for 0-15 in the last 16 bytes.
        assembly ("memory-safe") {
            r := or(r, byte(shr(r, x), 0x0000010102020202030303030303030300000000000000000000000000000000))
        }
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << result < value);
        }
    }

    /**
     * @dev Return the log in base 10 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 10 ** result < value);
        }
    }

    /**
     * @dev Return the log in base 256 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 x) internal pure returns (uint256 r) {
        // If value has upper 128 bits set, log2 result is at least 128
        r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
        // If upper 64 bits of 128-bit half set, add 64 to result
        r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
        // If upper 32 bits of 64-bit half set, add 32 to result
        r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
        // If upper 16 bits of 32-bit half set, add 16 to result
        r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
        // Add 1 if upper 8 bits of 16-bit half set, and divide accumulated result by 8
        return (r >> 3) | SafeCast.toUint((x >> r) > 0xff);
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << (result << 3) < value);
        }
    }

    /**
     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
     */
    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
        return uint8(rounding) % 2 == 1;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.

pragma solidity ^0.8.20;

/**
 * @dev Wrappers over Solidity's uintXX/intXX/bool casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeCast {
    /**
     * @dev Value doesn't fit in an uint of `bits` size.
     */
    error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value);

    /**
     * @dev An int value doesn't fit in an uint of `bits` size.
     */
    error SafeCastOverflowedIntToUint(int256 value);

    /**
     * @dev Value doesn't fit in an int of `bits` size.
     */
    error SafeCastOverflowedIntDowncast(uint8 bits, int256 value);

    /**
     * @dev An uint value doesn't fit in an int of `bits` size.
     */
    error SafeCastOverflowedUintToInt(uint256 value);

    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        if (value > type(uint248).max) {
            revert SafeCastOverflowedUintDowncast(248, value);
        }
        return uint248(value);
    }

    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        if (value > type(uint240).max) {
            revert SafeCastOverflowedUintDowncast(240, value);
        }
        return uint240(value);
    }

    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        if (value > type(uint232).max) {
            revert SafeCastOverflowedUintDowncast(232, value);
        }
        return uint232(value);
    }

    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        if (value > type(uint224).max) {
            revert SafeCastOverflowedUintDowncast(224, value);
        }
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        if (value > type(uint216).max) {
            revert SafeCastOverflowedUintDowncast(216, value);
        }
        return uint216(value);
    }

    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        if (value > type(uint208).max) {
            revert SafeCastOverflowedUintDowncast(208, value);
        }
        return uint208(value);
    }

    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        if (value > type(uint200).max) {
            revert SafeCastOverflowedUintDowncast(200, value);
        }
        return uint200(value);
    }

    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        if (value > type(uint192).max) {
            revert SafeCastOverflowedUintDowncast(192, value);
        }
        return uint192(value);
    }

    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        if (value > type(uint184).max) {
            revert SafeCastOverflowedUintDowncast(184, value);
        }
        return uint184(value);
    }

    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        if (value > type(uint176).max) {
            revert SafeCastOverflowedUintDowncast(176, value);
        }
        return uint176(value);
    }

    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        if (value > type(uint168).max) {
            revert SafeCastOverflowedUintDowncast(168, value);
        }
        return uint168(value);
    }

    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        if (value > type(uint160).max) {
            revert SafeCastOverflowedUintDowncast(160, value);
        }
        return uint160(value);
    }

    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        if (value > type(uint152).max) {
            revert SafeCastOverflowedUintDowncast(152, value);
        }
        return uint152(value);
    }

    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        if (value > type(uint144).max) {
            revert SafeCastOverflowedUintDowncast(144, value);
        }
        return uint144(value);
    }

    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        if (value > type(uint136).max) {
            revert SafeCastOverflowedUintDowncast(136, value);
        }
        return uint136(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        if (value > type(uint128).max) {
            revert SafeCastOverflowedUintDowncast(128, value);
        }
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        if (value > type(uint120).max) {
            revert SafeCastOverflowedUintDowncast(120, value);
        }
        return uint120(value);
    }

    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        if (value > type(uint112).max) {
            revert SafeCastOverflowedUintDowncast(112, value);
        }
        return uint112(value);
    }

    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        if (value > type(uint104).max) {
            revert SafeCastOverflowedUintDowncast(104, value);
        }
        return uint104(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        if (value > type(uint96).max) {
            revert SafeCastOverflowedUintDowncast(96, value);
        }
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        if (value > type(uint88).max) {
            revert SafeCastOverflowedUintDowncast(88, value);
        }
        return uint88(value);
    }

    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        if (value > type(uint80).max) {
            revert SafeCastOverflowedUintDowncast(80, value);
        }
        return uint80(value);
    }

    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        if (value > type(uint72).max) {
            revert SafeCastOverflowedUintDowncast(72, value);
        }
        return uint72(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        if (value > type(uint64).max) {
            revert SafeCastOverflowedUintDowncast(64, value);
        }
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        if (value > type(uint56).max) {
            revert SafeCastOverflowedUintDowncast(56, value);
        }
        return uint56(value);
    }

    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        if (value > type(uint48).max) {
            revert SafeCastOverflowedUintDowncast(48, value);
        }
        return uint48(value);
    }

    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        if (value > type(uint40).max) {
            revert SafeCastOverflowedUintDowncast(40, value);
        }
        return uint40(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        if (value > type(uint32).max) {
            revert SafeCastOverflowedUintDowncast(32, value);
        }
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        if (value > type(uint24).max) {
            revert SafeCastOverflowedUintDowncast(24, value);
        }
        return uint24(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        if (value > type(uint16).max) {
            revert SafeCastOverflowedUintDowncast(16, value);
        }
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        if (value > type(uint8).max) {
            revert SafeCastOverflowedUintDowncast(8, value);
        }
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        if (value < 0) {
            revert SafeCastOverflowedIntToUint(value);
        }
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     */
    function toInt248(int256 value) internal pure returns (int248 downcasted) {
        downcasted = int248(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(248, value);
        }
    }

    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     */
    function toInt240(int256 value) internal pure returns (int240 downcasted) {
        downcasted = int240(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(240, value);
        }
    }

    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     */
    function toInt232(int256 value) internal pure returns (int232 downcasted) {
        downcasted = int232(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(232, value);
        }
    }

    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     */
    function toInt224(int256 value) internal pure returns (int224 downcasted) {
        downcasted = int224(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(224, value);
        }
    }

    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     */
    function toInt216(int256 value) internal pure returns (int216 downcasted) {
        downcasted = int216(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(216, value);
        }
    }

    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     */
    function toInt208(int256 value) internal pure returns (int208 downcasted) {
        downcasted = int208(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(208, value);
        }
    }

    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     */
    function toInt200(int256 value) internal pure returns (int200 downcasted) {
        downcasted = int200(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(200, value);
        }
    }

    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     */
    function toInt192(int256 value) internal pure returns (int192 downcasted) {
        downcasted = int192(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(192, value);
        }
    }

    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     */
    function toInt184(int256 value) internal pure returns (int184 downcasted) {
        downcasted = int184(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(184, value);
        }
    }

    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     */
    function toInt176(int256 value) internal pure returns (int176 downcasted) {
        downcasted = int176(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(176, value);
        }
    }

    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     */
    function toInt168(int256 value) internal pure returns (int168 downcasted) {
        downcasted = int168(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(168, value);
        }
    }

    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     */
    function toInt160(int256 value) internal pure returns (int160 downcasted) {
        downcasted = int160(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(160, value);
        }
    }

    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     */
    function toInt152(int256 value) internal pure returns (int152 downcasted) {
        downcasted = int152(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(152, value);
        }
    }

    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     */
    function toInt144(int256 value) internal pure returns (int144 downcasted) {
        downcasted = int144(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(144, value);
        }
    }

    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     */
    function toInt136(int256 value) internal pure returns (int136 downcasted) {
        downcasted = int136(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(136, value);
        }
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     */
    function toInt128(int256 value) internal pure returns (int128 downcasted) {
        downcasted = int128(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(128, value);
        }
    }

    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     */
    function toInt120(int256 value) internal pure returns (int120 downcasted) {
        downcasted = int120(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(120, value);
        }
    }

    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     */
    function toInt112(int256 value) internal pure returns (int112 downcasted) {
        downcasted = int112(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(112, value);
        }
    }

    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     */
    function toInt104(int256 value) internal pure returns (int104 downcasted) {
        downcasted = int104(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(104, value);
        }
    }

    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     */
    function toInt96(int256 value) internal pure returns (int96 downcasted) {
        downcasted = int96(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(96, value);
        }
    }

    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     */
    function toInt88(int256 value) internal pure returns (int88 downcasted) {
        downcasted = int88(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(88, value);
        }
    }

    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     */
    function toInt80(int256 value) internal pure returns (int80 downcasted) {
        downcasted = int80(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(80, value);
        }
    }

    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     */
    function toInt72(int256 value) internal pure returns (int72 downcasted) {
        downcasted = int72(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(72, value);
        }
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     */
    function toInt64(int256 value) internal pure returns (int64 downcasted) {
        downcasted = int64(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(64, value);
        }
    }

    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     */
    function toInt56(int256 value) internal pure returns (int56 downcasted) {
        downcasted = int56(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(56, value);
        }
    }

    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     */
    function toInt48(int256 value) internal pure returns (int48 downcasted) {
        downcasted = int48(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(48, value);
        }
    }

    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     */
    function toInt40(int256 value) internal pure returns (int40 downcasted) {
        downcasted = int40(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(40, value);
        }
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     */
    function toInt32(int256 value) internal pure returns (int32 downcasted) {
        downcasted = int32(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(32, value);
        }
    }

    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     */
    function toInt24(int256 value) internal pure returns (int24 downcasted) {
        downcasted = int24(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(24, value);
        }
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     */
    function toInt16(int256 value) internal pure returns (int16 downcasted) {
        downcasted = int16(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(16, value);
        }
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     */
    function toInt8(int256 value) internal pure returns (int8 downcasted) {
        downcasted = int8(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(8, value);
        }
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        if (value > uint256(type(int256).max)) {
            revert SafeCastOverflowedUintToInt(value);
        }
        return int256(value);
    }

    /**
     * @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump.
     */
    function toUint(bool b) internal pure returns (uint256 u) {
        assembly ("memory-safe") {
            u := iszero(iszero(b))
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.20;

import {SafeCast} from "./SafeCast.sol";

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant.
     *
     * IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone.
     * However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute
     * one branch when needed, making this function more expensive.
     */
    function ternary(bool condition, int256 a, int256 b) internal pure returns (int256) {
        unchecked {
            // branchless ternary works because:
            // b ^ (a ^ b) == a
            // b ^ 0 == b
            return b ^ ((a ^ b) * int256(SafeCast.toUint(condition)));
        }
    }

    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return ternary(a > b, a, b);
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return ternary(a < b, a, b);
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // Formula from the "Bit Twiddling Hacks" by Sean Eron Anderson.
            // Since `n` is a signed integer, the generated bytecode will use the SAR opcode to perform the right shift,
            // taking advantage of the most significant (or "sign" bit) in two's complement representation.
            // This opcode adds new most significant bits set to the value of the previous most significant bit. As a result,
            // the mask will either be `bytes32(0)` (if n is positive) or `~bytes32(0)` (if n is negative).
            int256 mask = n >> 255;

            // A `bytes32(0)` mask leaves the input unchanged, while a `~bytes32(0)` mask complements it.
            return uint256((n + mask) ^ mask);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Panic.sol)

pragma solidity ^0.8.20;

/**
 * @dev Helper library for emitting standardized panic codes.
 *
 * ```solidity
 * contract Example {
 *      using Panic for uint256;
 *
 *      // Use any of the declared internal constants
 *      function foo() { Panic.GENERIC.panic(); }
 *
 *      // Alternatively
 *      function foo() { Panic.panic(Panic.GENERIC); }
 * }
 * ```
 *
 * Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil].
 *
 * _Available since v5.1._
 */
// slither-disable-next-line unused-state
library Panic {
    /// @dev generic / unspecified error
    uint256 internal constant GENERIC = 0x00;
    /// @dev used by the assert() builtin
    uint256 internal constant ASSERT = 0x01;
    /// @dev arithmetic underflow or overflow
    uint256 internal constant UNDER_OVERFLOW = 0x11;
    /// @dev division or modulo by zero
    uint256 internal constant DIVISION_BY_ZERO = 0x12;
    /// @dev enum conversion error
    uint256 internal constant ENUM_CONVERSION_ERROR = 0x21;
    /// @dev invalid encoding in storage
    uint256 internal constant STORAGE_ENCODING_ERROR = 0x22;
    /// @dev empty array pop
    uint256 internal constant EMPTY_ARRAY_POP = 0x31;
    /// @dev array out of bounds access
    uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32;
    /// @dev resource error (too large allocation or too large array)
    uint256 internal constant RESOURCE_ERROR = 0x41;
    /// @dev calling invalid internal function
    uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51;

    /// @dev Reverts with a panic code. Recommended to use with
    /// the internal constants with predefined codes.
    function panic(uint256 code) internal pure {
        assembly ("memory-safe") {
            mstore(0x00, 0x4e487b71)
            mstore(0x20, code)
            revert(0x1c, 0x24)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (utils/Strings.sol)

pragma solidity ^0.8.20;

import {Math} from "./math/Math.sol";
import {SafeCast} from "./math/SafeCast.sol";
import {SignedMath} from "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    using SafeCast for *;

    bytes16 private constant HEX_DIGITS = "0123456789abcdef";
    uint8 private constant ADDRESS_LENGTH = 20;
    uint256 private constant SPECIAL_CHARS_LOOKUP =
        (1 << 0x08) | // backspace
            (1 << 0x09) | // tab
            (1 << 0x0a) | // newline
            (1 << 0x0c) | // form feed
            (1 << 0x0d) | // carriage return
            (1 << 0x22) | // double quote
            (1 << 0x5c); // backslash

    /**
     * @dev The `value` string doesn't fit in the specified `length`.
     */
    error StringsInsufficientHexLength(uint256 value, uint256 length);

    /**
     * @dev The string being parsed contains characters that are not in scope of the given base.
     */
    error StringsInvalidChar();

    /**
     * @dev The string being parsed is not a properly formatted address.
     */
    error StringsInvalidAddressFormat();

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            assembly ("memory-safe") {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                assembly ("memory-safe") {
                    mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toStringSigned(int256 value) internal pure returns (string memory) {
        return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        uint256 localValue = value;
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = HEX_DIGITS[localValue & 0xf];
            localValue >>= 4;
        }
        if (localValue != 0) {
            revert StringsInsufficientHexLength(value, length);
        }
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
     * representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its checksummed ASCII `string` hexadecimal
     * representation, according to EIP-55.
     */
    function toChecksumHexString(address addr) internal pure returns (string memory) {
        bytes memory buffer = bytes(toHexString(addr));

        // hash the hex part of buffer (skip length + 2 bytes, length 40)
        uint256 hashValue;
        assembly ("memory-safe") {
            hashValue := shr(96, keccak256(add(buffer, 0x22), 40))
        }

        for (uint256 i = 41; i > 1; --i) {
            // possible values for buffer[i] are 48 (0) to 57 (9) and 97 (a) to 102 (f)
            if (hashValue & 0xf > 7 && uint8(buffer[i]) > 96) {
                // case shift by xoring with 0x20
                buffer[i] ^= 0x20;
            }
            hashValue >>= 4;
        }
        return string(buffer);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
    }

    /**
     * @dev Parse a decimal string and returns the value as a `uint256`.
     *
     * Requirements:
     * - The string must be formatted as `[0-9]*`
     * - The result must fit into an `uint256` type
     */
    function parseUint(string memory input) internal pure returns (uint256) {
        return parseUint(input, 0, bytes(input).length);
    }

    /**
     * @dev Variant of {parseUint-string} that parses a substring of `input` located between position `begin` (included) and
     * `end` (excluded).
     *
     * Requirements:
     * - The substring must be formatted as `[0-9]*`
     * - The result must fit into an `uint256` type
     */
    function parseUint(string memory input, uint256 begin, uint256 end) internal pure returns (uint256) {
        (bool success, uint256 value) = tryParseUint(input, begin, end);
        if (!success) revert StringsInvalidChar();
        return value;
    }

    /**
     * @dev Variant of {parseUint-string} that returns false if the parsing fails because of an invalid character.
     *
     * NOTE: This function will revert if the result does not fit in a `uint256`.
     */
    function tryParseUint(string memory input) internal pure returns (bool success, uint256 value) {
        return _tryParseUintUncheckedBounds(input, 0, bytes(input).length);
    }

    /**
     * @dev Variant of {parseUint-string-uint256-uint256} that returns false if the parsing fails because of an invalid
     * character.
     *
     * NOTE: This function will revert if the result does not fit in a `uint256`.
     */
    function tryParseUint(
        string memory input,
        uint256 begin,
        uint256 end
    ) internal pure returns (bool success, uint256 value) {
        if (end > bytes(input).length || begin > end) return (false, 0);
        return _tryParseUintUncheckedBounds(input, begin, end);
    }

    /**
     * @dev Implementation of {tryParseUint-string-uint256-uint256} that does not check bounds. Caller should make sure that
     * `begin <= end <= input.length`. Other inputs would result in undefined behavior.
     */
    function _tryParseUintUncheckedBounds(
        string memory input,
        uint256 begin,
        uint256 end
    ) private pure returns (bool success, uint256 value) {
        bytes memory buffer = bytes(input);

        uint256 result = 0;
        for (uint256 i = begin; i < end; ++i) {
            uint8 chr = _tryParseChr(bytes1(_unsafeReadBytesOffset(buffer, i)));
            if (chr > 9) return (false, 0);
            result *= 10;
            result += chr;
        }
        return (true, result);
    }

    /**
     * @dev Parse a decimal string and returns the value as a `int256`.
     *
     * Requirements:
     * - The string must be formatted as `[-+]?[0-9]*`
     * - The result must fit in an `int256` type.
     */
    function parseInt(string memory input) internal pure returns (int256) {
        return parseInt(input, 0, bytes(input).length);
    }

    /**
     * @dev Variant of {parseInt-string} that parses a substring of `input` located between position `begin` (included) and
     * `end` (excluded).
     *
     * Requirements:
     * - The substring must be formatted as `[-+]?[0-9]*`
     * - The result must fit in an `int256` type.
     */
    function parseInt(string memory input, uint256 begin, uint256 end) internal pure returns (int256) {
        (bool success, int256 value) = tryParseInt(input, begin, end);
        if (!success) revert StringsInvalidChar();
        return value;
    }

    /**
     * @dev Variant of {parseInt-string} that returns false if the parsing fails because of an invalid character or if
     * the result does not fit in a `int256`.
     *
     * NOTE: This function will revert if the absolute value of the result does not fit in a `uint256`.
     */
    function tryParseInt(string memory input) internal pure returns (bool success, int256 value) {
        return _tryParseIntUncheckedBounds(input, 0, bytes(input).length);
    }

    uint256 private constant ABS_MIN_INT256 = 2 ** 255;

    /**
     * @dev Variant of {parseInt-string-uint256-uint256} that returns false if the parsing fails because of an invalid
     * character or if the result does not fit in a `int256`.
     *
     * NOTE: This function will revert if the absolute value of the result does not fit in a `uint256`.
     */
    function tryParseInt(
        string memory input,
        uint256 begin,
        uint256 end
    ) internal pure returns (bool success, int256 value) {
        if (end > bytes(input).length || begin > end) return (false, 0);
        return _tryParseIntUncheckedBounds(input, begin, end);
    }

    /**
     * @dev Implementation of {tryParseInt-string-uint256-uint256} that does not check bounds. Caller should make sure that
     * `begin <= end <= input.length`. Other inputs would result in undefined behavior.
     */
    function _tryParseIntUncheckedBounds(
        string memory input,
        uint256 begin,
        uint256 end
    ) private pure returns (bool success, int256 value) {
        bytes memory buffer = bytes(input);

        // Check presence of a negative sign.
        bytes1 sign = begin == end ? bytes1(0) : bytes1(_unsafeReadBytesOffset(buffer, begin)); // don't do out-of-bound (possibly unsafe) read if sub-string is empty
        bool positiveSign = sign == bytes1("+");
        bool negativeSign = sign == bytes1("-");
        uint256 offset = (positiveSign || negativeSign).toUint();

        (bool absSuccess, uint256 absValue) = tryParseUint(input, begin + offset, end);

        if (absSuccess && absValue < ABS_MIN_INT256) {
            return (true, negativeSign ? -int256(absValue) : int256(absValue));
        } else if (absSuccess && negativeSign && absValue == ABS_MIN_INT256) {
            return (true, type(int256).min);
        } else return (false, 0);
    }

    /**
     * @dev Parse a hexadecimal string (with or without "0x" prefix), and returns the value as a `uint256`.
     *
     * Requirements:
     * - The string must be formatted as `(0x)?[0-9a-fA-F]*`
     * - The result must fit in an `uint256` type.
     */
    function parseHexUint(string memory input) internal pure returns (uint256) {
        return parseHexUint(input, 0, bytes(input).length);
    }

    /**
     * @dev Variant of {parseHexUint-string} that parses a substring of `input` located between position `begin` (included) and
     * `end` (excluded).
     *
     * Requirements:
     * - The substring must be formatted as `(0x)?[0-9a-fA-F]*`
     * - The result must fit in an `uint256` type.
     */
    function parseHexUint(string memory input, uint256 begin, uint256 end) internal pure returns (uint256) {
        (bool success, uint256 value) = tryParseHexUint(input, begin, end);
        if (!success) revert StringsInvalidChar();
        return value;
    }

    /**
     * @dev Variant of {parseHexUint-string} that returns false if the parsing fails because of an invalid character.
     *
     * NOTE: This function will revert if the result does not fit in a `uint256`.
     */
    function tryParseHexUint(string memory input) internal pure returns (bool success, uint256 value) {
        return _tryParseHexUintUncheckedBounds(input, 0, bytes(input).length);
    }

    /**
     * @dev Variant of {parseHexUint-string-uint256-uint256} that returns false if the parsing fails because of an
     * invalid character.
     *
     * NOTE: This function will revert if the result does not fit in a `uint256`.
     */
    function tryParseHexUint(
        string memory input,
        uint256 begin,
        uint256 end
    ) internal pure returns (bool success, uint256 value) {
        if (end > bytes(input).length || begin > end) return (false, 0);
        return _tryParseHexUintUncheckedBounds(input, begin, end);
    }

    /**
     * @dev Implementation of {tryParseHexUint-string-uint256-uint256} that does not check bounds. Caller should make sure that
     * `begin <= end <= input.length`. Other inputs would result in undefined behavior.
     */
    function _tryParseHexUintUncheckedBounds(
        string memory input,
        uint256 begin,
        uint256 end
    ) private pure returns (bool success, uint256 value) {
        bytes memory buffer = bytes(input);

        // skip 0x prefix if present
        bool hasPrefix = (end > begin + 1) && bytes2(_unsafeReadBytesOffset(buffer, begin)) == bytes2("0x"); // don't do out-of-bound (possibly unsafe) read if sub-string is empty
        uint256 offset = hasPrefix.toUint() * 2;

        uint256 result = 0;
        for (uint256 i = begin + offset; i < end; ++i) {
            uint8 chr = _tryParseChr(bytes1(_unsafeReadBytesOffset(buffer, i)));
            if (chr > 15) return (false, 0);
            result *= 16;
            unchecked {
                // Multiplying by 16 is equivalent to a shift of 4 bits (with additional overflow check).
                // This guarantees that adding a value < 16 will not cause an overflow, hence the unchecked.
                result += chr;
            }
        }
        return (true, result);
    }

    /**
     * @dev Parse a hexadecimal string (with or without "0x" prefix), and returns the value as an `address`.
     *
     * Requirements:
     * - The string must be formatted as `(0x)?[0-9a-fA-F]{40}`
     */
    function parseAddress(string memory input) internal pure returns (address) {
        return parseAddress(input, 0, bytes(input).length);
    }

    /**
     * @dev Variant of {parseAddress-string} that parses a substring of `input` located between position `begin` (included) and
     * `end` (excluded).
     *
     * Requirements:
     * - The substring must be formatted as `(0x)?[0-9a-fA-F]{40}`
     */
    function parseAddress(string memory input, uint256 begin, uint256 end) internal pure returns (address) {
        (bool success, address value) = tryParseAddress(input, begin, end);
        if (!success) revert StringsInvalidAddressFormat();
        return value;
    }

    /**
     * @dev Variant of {parseAddress-string} that returns false if the parsing fails because the input is not a properly
     * formatted address. See {parseAddress-string} requirements.
     */
    function tryParseAddress(string memory input) internal pure returns (bool success, address value) {
        return tryParseAddress(input, 0, bytes(input).length);
    }

    /**
     * @dev Variant of {parseAddress-string-uint256-uint256} that returns false if the parsing fails because input is not a properly
     * formatted address. See {parseAddress-string-uint256-uint256} requirements.
     */
    function tryParseAddress(
        string memory input,
        uint256 begin,
        uint256 end
    ) internal pure returns (bool success, address value) {
        if (end > bytes(input).length || begin > end) return (false, address(0));

        bool hasPrefix = (end > begin + 1) && bytes2(_unsafeReadBytesOffset(bytes(input), begin)) == bytes2("0x"); // don't do out-of-bound (possibly unsafe) read if sub-string is empty
        uint256 expectedLength = 40 + hasPrefix.toUint() * 2;

        // check that input is the correct length
        if (end - begin == expectedLength) {
            // length guarantees that this does not overflow, and value is at most type(uint160).max
            (bool s, uint256 v) = _tryParseHexUintUncheckedBounds(input, begin, end);
            return (s, address(uint160(v)));
        } else {
            return (false, address(0));
        }
    }

    function _tryParseChr(bytes1 chr) private pure returns (uint8) {
        uint8 value = uint8(chr);

        // Try to parse `chr`:
        // - Case 1: [0-9]
        // - Case 2: [a-f]
        // - Case 3: [A-F]
        // - otherwise not supported
        unchecked {
            if (value > 47 && value < 58) value -= 48;
            else if (value > 96 && value < 103) value -= 87;
            else if (value > 64 && value < 71) value -= 55;
            else return type(uint8).max;
        }

        return value;
    }

    /**
     * @dev Escape special characters in JSON strings. This can be useful to prevent JSON injection in NFT metadata.
     *
     * WARNING: This function should only be used in double quoted JSON strings. Single quotes are not escaped.
     *
     * NOTE: This function escapes all unicode characters, and not just the ones in ranges defined in section 2.5 of
     * RFC-4627 (U+0000 to U+001F, U+0022 and U+005C). ECMAScript's `JSON.parse` does recover escaped unicode
     * characters that are not in this range, but other tooling may provide different results.
     */
    function escapeJSON(string memory input) internal pure returns (string memory) {
        bytes memory buffer = bytes(input);
        bytes memory output = new bytes(2 * buffer.length); // worst case scenario
        uint256 outputLength = 0;

        for (uint256 i; i < buffer.length; ++i) {
            bytes1 char = bytes1(_unsafeReadBytesOffset(buffer, i));
            if (((SPECIAL_CHARS_LOOKUP & (1 << uint8(char))) != 0)) {
                output[outputLength++] = "\\";
                if (char == 0x08) output[outputLength++] = "b";
                else if (char == 0x09) output[outputLength++] = "t";
                else if (char == 0x0a) output[outputLength++] = "n";
                else if (char == 0x0c) output[outputLength++] = "f";
                else if (char == 0x0d) output[outputLength++] = "r";
                else if (char == 0x5c) output[outputLength++] = "\\";
                else if (char == 0x22) {
                    // solhint-disable-next-line quotes
                    output[outputLength++] = '"';
                }
            } else {
                output[outputLength++] = char;
            }
        }
        // write the actual length and deallocate unused memory
        assembly ("memory-safe") {
            mstore(output, outputLength)
            mstore(0x40, add(output, shl(5, shr(5, add(outputLength, 63)))))
        }

        return string(output);
    }

    /**
     * @dev Reads a bytes32 from a bytes array without bounds checking.
     *
     * NOTE: making this function internal would mean it could be used with memory unsafe offset, and marking the
     * assembly block as such would prevent some optimizations.
     */
    function _unsafeReadBytesOffset(bytes memory buffer, uint256 offset) private pure returns (bytes32 value) {
        // This is not memory safe in the general case, but all calls to this private function are within bounds.
        assembly ("memory-safe") {
            value := mload(add(buffer, add(0x20, offset)))
        }
    }
}

pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

pragma solidity >=0.6.2;

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

pragma solidity >=0.6.2;

import './IUniswapV2Router01.sol';

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/utils/Strings.sol";

/**
 * @title SVGGenerator
 * @dev Library for generating SVG visuals for XBURN NFTs
 * - Optimized SVG generation with modular components
 * - Improved string handling for better gas efficiency
 * - Enhanced visualization with consistent styling
 */
library SVGGenerator {
    using Strings for uint256;

    /**
     * @dev Main function to generate the complete SVG
     * Assumes input strings are already correctly formatted for display.
     * @param contractAddress The address of the contract
     * @param burnId The ID of the burn
     * @param xenBurnedNumeric Amount of XEN burned (formatted string, e.g., "1.23T" or "500K")
     * @param baseMint Base mint amount (formatted string, e.g., "1,234")
     * @param amplifier Current amplifier value (string)
     * @param termDays Term in days (string)
     * @param maturityDate Maturity date string (formatted YYYY-MM-DD)
     * @param totalReward Total reward amount (formatted string, e.g., "2,468")
     * @return Complete SVG as a string
     */
    function generateSVG(
        string memory contractAddress,
        string memory burnId,
        string memory xenBurnedNumeric, // Already formatted by caller
        string memory baseMint,         // Already formatted by caller
        string memory amplifier,
        string memory termDays,
        string memory maturityDate,
        string memory totalReward       // Already formatted by caller
    ) internal pure returns (string memory) {
        return string(
            abi.encodePacked(
                '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 566">',
                _generateDefs(),
                _generateBackground(),
                _generateBurnEffect(),
                _generateLogo(),
                _generateHeader(contractAddress),
                _generateContent(burnId, xenBurnedNumeric, baseMint), // Pass formatted strings directly
                _generateAttributes(amplifier, termDays, maturityDate),
                _generateWarning(totalReward), // Pass formatted string directly
                '</svg>'
            )
        );
    }

    /**
     * @dev Generates SVG definitions (gradients and styles)
     */
    function _generateDefs() private pure returns (string memory) {
        return string(
            abi.encodePacked(
                '<defs>',
                _generateGradients(),
                _generateStyles(),
                '</defs>'
            )
        );
    }

    /**
     * @dev Generates contract information header
     */
    function _generateHeader(string memory contractAddress) private pure returns (string memory) {
        return string(
            abi.encodePacked(
                '<text x="50%" y="5%" class="base small" dominant-baseline="middle" text-anchor="middle">',
                contractAddress,
                '</text>'
            )
        );
    }

    /**
     * @dev Generates background for the SVG
     */
    function _generateBackground() private pure returns (string memory) {
        return string(
            abi.encodePacked(
                '<g>',
                '<rect width="100%" height="100%" fill="url(#g0)" rx="10px" ry="10px" stroke-linejoin="round"/>',
                '<rect width="94%" height="96%" fill="transparent" rx="10px" ry="10px" ',
                'stroke-linejoin="round" x="3%" y="2%" stroke-dasharray="1,6" stroke="white"/>',
                '</g>'
            )
        );
    }

    /**
     * @dev Generates flame effect for the SVG
     */
    function _generateBurnEffect() private pure returns (string memory) {
        return string(
            abi.encodePacked(
                '<g>',
                '<path stroke="none" fill="url(#g1)" ',
                'transform="translate(170,536), scale(1.7)" ',
                'd="M -14 0 c -13 -13 -18 -26 -13 -37 c 8 -17 15 -24 11 -45 c 0 0 15 -2 27 28 c 0 0 10 -1 8 -18 c 3 -1 35 43 1 72 z"/>',
                '<path stroke="none" fill="url(#g1)" ',
                'transform="translate(170,536), scale(1.4)" ',
                'd="M -10 0 c -13 -13 -18 -26 -9 -39 c 8 -17 14 -20 9 -34 c 10 6 13 13 19 31 c 9 -2 13 -7 14 -17 c 3 -1 15 37 -7 59 z"/>',
                '</g>'
            )
        );
    }

    /**
     * @dev Generates the XBURN logo
     */
    function _generateLogo() private pure returns (string memory) {
        return string(
            abi.encodePacked(
                '<g transform="translate(175,160)">',
                '<line x1="-65" y1="-65" x2="65" y2="65" stroke="#ededed" stroke-width="5"/>',
                '<line x1="-65" y1="65" x2="65" y2="-65" stroke="#ededed" stroke-width="5"/>',
                '</g>'
            )
        );
    }

    /**
     * @dev Generates the main content section
     * Uses pre-formatted input strings directly.
     */
    function _generateContent(
        string memory burnId,
        string memory xenBurnedNumeric, // Already formatted
        string memory baseMint         // Already formatted
    ) private pure returns (string memory) {
        // Removed redundant comma formatting
        return string(
            abi.encodePacked(
                '<text x="50%" y="50%" class="base token-name" dominant-baseline="middle" text-anchor="middle">$XBURN</text>',
                '<text x="50%" y="56%" class="base burn" text-anchor="middle" dominant-baseline="middle">',
                xenBurnedNumeric, ' XEN BURNED</text>',
                '<text x="18%" y="62%" class="base meta" dominant-baseline="middle">#', burnId, '</text>',
                '<text x="82%" y="62%" class="base meta series" dominant-baseline="middle" text-anchor="end">BURN</text>',
                '<text x="18%" y="68%" class="base meta" dominant-baseline="middle">Base Mint</text>',
                '<text x="82%" y="68%" class="base meta" dominant-baseline="middle" text-anchor="end">',
                baseMint, ' $XBURN</text>' // Use baseMint directly
            )
        );
    }

    /**
     * @dev Generates the attributes section
     */
    function _generateAttributes(
        string memory amplifier,
        string memory termDays,
        string memory maturityDate
    ) private pure returns (string memory) {
        // Proper grammar handling for day/days
        string memory daysText = _isTermEqualsOne(termDays) ? "DAY" : "DAYS";
        
        return string(
            abi.encodePacked(
                '<text x="18%" y="74%" class="base meta" dominant-baseline="middle">AMP</text>',
                '<text x="82%" y="74%" class="base meta" dominant-baseline="middle" text-anchor="end">',
                amplifier,
                '</text>',
                '<text x="18%" y="80%" class="base meta" dominant-baseline="middle">Term</text>',
                '<text x="82%" y="80%" class="base meta" dominant-baseline="middle" text-anchor="end">',
                termDays, ' ', daysText, '</text>', 
                '<text x="18%" y="86%" class="base meta" dominant-baseline="middle">Maturity</text>',
                '<text x="82%" y="86%" class="base meta" dominant-baseline="middle" text-anchor="end">',
                maturityDate,
                '</text>'
            )
        );
    }

    /**
     * @dev Generates the warning text at the bottom
     * Uses pre-formatted input string directly.
     */
    function _generateWarning(string memory totalReward) private pure returns (string memory) {
        // Removed redundant comma formatting
        return string(
            abi.encodePacked(
                '<text x="50%" y="94%" class="base warning" text-anchor="middle" fill="#FFD700">',
                totalReward, ' $XBURN LOCKED UNTIL MATURITY</text>' // Use totalReward directly
            )
        );
    }

    /**
     * @dev Generates gradient definitions
     */
    function _generateGradients() private pure returns (string memory) {
        return string(
            abi.encodePacked(
                '<linearGradient id="g0" x1="50%" y1="0%" x2="50%" y2="100%">',
                '<stop stop-color="hsl(1, 30%, 5%)" stop-opacity="1" offset="0%"/>',
                '<stop stop-color="hsl(1, 45%, 12%)" stop-opacity="1" offset="50%"/>',
                '<stop stop-color="hsl(1, 60%, 36%)" stop-opacity="1" offset="100%"/>',
                '</linearGradient>',
                '<linearGradient id="g1" x1="50%" y1="0%" x2="50%" y2="100%">',
                '<stop stop-color="hsl(1, 100%, 50%)" stop-opacity="1" offset="20%"/>',
                '<stop stop-color="hsl(35, 100%, 50%)" stop-opacity="0.6" offset="60%"/>',
                '<stop stop-color="hsl(60, 100%, 50%)" stop-opacity="0.05" offset="90%"/>',
                '</linearGradient>'
            )
        );
    }

    function _generateStyles() private pure returns (string memory) {
        return string(
            abi.encodePacked(
                '<style>',
                '.base {fill: #ededed; font-family: Montserrat, arial, sans-serif; font-size: 30px; font-weight: 400; }',
                '.token-name {font-size: 36px; font-weight: 500; }',
                '.series {text-transform: uppercase}',
                '.meta {font-size: 16px; }',
                '.small {font-size: 12px; }',
                '.burn {font-weight: 500; font-size: 20px; }',
                '.warning {font-size: 14px; font-weight: 500; }',
                '</style>'
            )
        );
    }

    /**
     * @dev Checks if term days is exactly "1" for proper grammar
     * @param term The term in days as a string
     * @return true if term is "1", false otherwise
     */
    function _isTermEqualsOne(string memory term) private pure returns (bool) {
        bytes memory termBytes = bytes(term);
        return termBytes.length == 1 && termBytes[0] == '1';
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

/**
 * @title XBurnMetadata
 * @dev Library for handling on-chain SVG/JSON construction for XBurn NFTs.
 * Handles metadata and token URI generation for the NFT contract.
 */

import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/Base64.sol";
import "./SVGGenerator.sol";

library XBurnMetadata {
    using Strings for uint256;
    using Strings for address;
    using SVGGenerator for *;

    /**
     * @dev BurnLock structure containing all lock-related information
     */
    struct BurnLock {
        uint256 xenAmount;      // Amount of XEN tokens burned
        uint256 maturityTs;     // Timestamp when the lock matures
        uint256 ampSnapshot;    // Amplifier snapshot at lock creation
        uint256 termDays;       // Lock term in days
        address owner;          // Owner of the lock
        bool claimed;           // Whether rewards have been claimed
        uint256 rewardAmount;   // Total reward amount (base + bonus)
        uint256 baseMint;       // Base mint amount without amplifier bonus
    }

    /**
     * @dev TokenData structure for holding formatted data for visualization
     */
    struct TokenData {
        string burnId;           // Token ID as string
        string xenBurnedNumeric; // Amount of XEN burned, numeric string
        string baseMint;         // Base XBURN mint amount
        string totalReward;      // Total reward amount
        string amplifier;        // Amplifier percentage
        string termDays;         // Term in days
        string maturityDate;     // Formatted maturity date
        string status;           // Current status (Locked/Ready/Claimed)
        bool isLocked;           // Whether token is still locked
    }

    function formatLargeNumber(uint256 number) private pure returns (string memory) {
        if (number >= 1e12) {
            uint256 trillions = number / 1e12;
            uint256 decimal = (number % 1e12) / 1e10;
            return string(abi.encodePacked(
                trillions.toString(), 
                decimal > 0 ? string(abi.encodePacked(".", decimal < 10 ? "0" : "", decimal.toString())) : "", 
                "T"
            ));
        } else if (number >= 1e9) {
            uint256 billions = number / 1e9;
            uint256 decimal = (number % 1e9) / 1e7;
            return string(abi.encodePacked(
                billions.toString(), 
                decimal > 0 ? string(abi.encodePacked(".", decimal < 10 ? "0" : "", decimal.toString())) : "", 
                "B"
            ));
        } else if (number >= 1e6) {
            uint256 millions = number / 1e6;
            uint256 decimal = (number % 1e6) / 1e4;
            return string(abi.encodePacked(
                millions.toString(), 
                decimal > 0 ? string(abi.encodePacked(".", decimal < 10 ? "0" : "", decimal.toString())) : "", 
                "M"
            ));
        }
        return number.toString();
    }

    /**
     * @dev Formats a string number with commas (e.g., "1000000" becomes "1,000,000")
     * Added based on SVGGenerator's implementation, moved here for central formatting.
     * @param numberStr The number as a string (should not contain decimals or suffixes)
     * @return The formatted number string with commas
     */
    function _formatWithCommas(string memory numberStr) private pure returns (string memory) {
        bytes memory numberBytes = bytes(numberStr);
        uint256 len = numberBytes.length;

        if (len <= 3) {
            return numberStr;
        }

        uint256 commaCount = (len - 1) / 3;
        bytes memory result = new bytes(len + commaCount);
        uint256 resultIdx = result.length - 1;
        uint256 sourceIdx = len - 1;
        uint256 count = 0;

        while (true) {
            result[resultIdx] = numberBytes[sourceIdx];
            count++;

            if (sourceIdx == 0) break;

            if (count == 3 && commaCount > 0) {
                resultIdx--;
                result[resultIdx] = ',';
                commaCount--;
                count = 0;
            }

            resultIdx--;
            sourceIdx--;
        }
        
        return string(result);
    }

    /**
     * @dev Main entry point for tokenURI creation
     * @param tokenId The NFT token ID
     * @param lock The BurnLock data for this token
     * @param currentTime Current block timestamp
     * @param contractAddress The NFT contract address
     * @return Complete tokenURI with Base64 encoded JSON data
     */
    function constructTokenURI(
        uint256 tokenId,
        BurnLock memory lock,
        uint256 currentTime,
        address contractAddress
    ) internal pure returns (string memory) {
        TokenData memory data = _prepareData(tokenId, lock, currentTime);
        string memory svg = _generateSVG(data, contractAddress);
        string memory json = _generateJSON(data, svg);

        return string(
            abi.encodePacked(
                "data:application/json;base64,",
                Base64.encode(bytes(json))
            )
        );
    }

    /**
     * @dev Prepares and formats data for token display
     * @param tokenId The NFT token ID
     * @param lock The BurnLock data for this token
     * @param currentTime Current block timestamp
     * @return Formatted TokenData structure
     */
    function _prepareData(
        uint256 tokenId,
        BurnLock memory lock,
        uint256 currentTime
    ) private pure returns (TokenData memory) {
        // Basic token data
        string memory burnId = tokenId.toString();
        string memory xenBurnedNumeric = formatLargeNumber(lock.xenAmount / 1e18);
        string memory baseMint = _formatWithCommas((lock.baseMint / 1e18).toString());
        string memory totalReward = _formatWithCommas((lock.rewardAmount / 1e18).toString());

        // Set amplifier to raw value
        string memory amplifier = lock.ampSnapshot.toString();
        
        // Term days
        string memory termDays = lock.termDays.toString();

        // Format maturity date
        (uint256 year, uint256 month, uint256 day) = _parseTimestamp(lock.maturityTs);
        string memory maturityDate = string(
            abi.encodePacked(
                year.toString(),
                "-",
                _padZero(month),
                "-",
                _padZero(day)
            )
        );

        // Determine lock status
        bool isLocked = (currentTime < lock.maturityTs && !lock.claimed);
        string memory status = isLocked
            ? "Locked"
            : (lock.claimed ? "Claimed" : "Ready");

        return TokenData({
            burnId: burnId,
            xenBurnedNumeric: xenBurnedNumeric,
            baseMint: baseMint,
            totalReward: totalReward,
            amplifier: amplifier,
            termDays: termDays,
            maturityDate: maturityDate,
            status: status,
            isLocked: isLocked
        });
    }

    /**
     * @dev Generates SVG for the token
     * @param data Prepared token data
     * @param contractAddress The NFT contract address
     * @return SVG string
     */
    function _generateSVG(
        TokenData memory data,
        address contractAddress
    ) private pure returns (string memory) {
        // Convert contract address to string
        string memory fullAddress = addressToString(contractAddress);
        
        return SVGGenerator.generateSVG(
            fullAddress,
            data.burnId,
            data.xenBurnedNumeric,
            data.baseMint,
            data.amplifier,
            data.termDays,
            data.maturityDate,
            data.totalReward
        );
    }

    /**
     * @dev Generates JSON metadata for the token
     * @param data Prepared token data
     * @param svg SVG data string
     * @return JSON metadata string
     */
    function _generateJSON(
        TokenData memory data,
        string memory svg
    ) private pure returns (string memory) {
        return string(
            abi.encodePacked(
                '{',
                '"name":"XBURN Lock Position #', data.burnId, '",',
                '"description":"This NFT represents a locked XBURN position created by burning XEN. ',
                'It contains all data on-chain including the SVG image and is redeemable for XBURN tokens at maturity.",',
                '"image":"data:image/svg+xml;base64,', Base64.encode(bytes(svg)), '",',
                '"attributes":[',
                    '{"trait_type":"XEN Burned","value":"', data.xenBurnedNumeric, '"},',
                    '{"trait_type":"Base Mint","value":"', data.baseMint, '"},',
                    '{"trait_type":"Amplifier","value":"', data.amplifier, '"},',
                    '{"trait_type":"Term Days","value":"', data.termDays, '"},',
                    '{"trait_type":"Maturity","value":"', data.maturityDate, '"},',
                    '{"trait_type":"Total Reward","value":"', data.totalReward, '"},',
                    '{"trait_type":"Status","value":"', data.status, '"}',
                ']',
                '}'
            )
        );
    }

    /**
     * @dev Converts an address to a hex string
     * @param addr The address to convert
     * @return The address as a hex string
     */
    function addressToString(address addr) private pure returns (string memory) {
        return addr.toHexString();
    }

    /**
     * @dev Parses a timestamp into year, month, and day
     * @param timestamp The timestamp to parse
     * @return year The year component
     * @return month The month component 
     * @return day The day component
     */
    function _parseTimestamp(uint256 timestamp)
        private
        pure
        returns (uint256 year, uint256 month, uint256 day)
    {
        // Accurate date calculation algorithm
        uint256 secs = timestamp;
        uint256 z = (secs / 86400) + 719468;
        uint256 era = (z >= 0 ? z : z - 146096) / 146097;
        uint256 doe = z - era * 146097;
        uint256 yoe = (doe - doe/1460 + doe/36524 - doe/146096) / 365;
        uint256 y = yoe + era * 400;
        uint256 doy = doe - (365*yoe + yoe/4 - yoe/100 + yoe/400);
        uint256 mp = (5*doy + 2)/153;
        uint256 d = doy - (153*mp+2)/5 + 1;
        
        uint256 m;
        if (mp < 10) {
            m = mp + 3;
        } else {
            m = mp - 9;
        }
        
        y = y + (m <= 2 ? 1 : 0);
        
        return (y, m, d);
    }

    /**
     * @dev Pads a number with a leading zero if less than 10
     * @param num The number to pad
     * @return The padded number as a string
     */
    function _padZero(uint256 num) private pure returns (string memory) {
        return num < 10
            ? string(abi.encodePacked("0", num.toString()))
            : num.toString();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

/**
 * @title XBurnNFT
 * @dev ERC721 contract representing locked XBURN positions.
 * Each NFT represents a position where XEN tokens were burned in exchange for XBURN rewards.
 * The NFT contains all the details of the burn and matures after a set time period.
 * Implements EIP-2981 for royalties and OpenSea contract metadata.
 */

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/common/ERC2981.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Base64.sol";

import "./SVGGenerator.sol";
import "./XBurnMetadata.sol";

using Strings for uint256;

contract XBurnNFT is ERC721, ERC721Enumerable, ERC2981, Ownable {
    // ------------------------------------------------
    // ================ Constants =====================
    // ------------------------------------------------
    
    uint256 public constant MAX_TERM_DAYS = 3650; // ~10 years
    uint256 public constant MAX_BATCH_SIZE = 100; // Maximum batch size for loop protection
    uint256 public constant BASE_RATIO = 1_000_000;
    // ------------------------------------------------
    // ================ State Variables ==============
    // ------------------------------------------------
    
    // Address variables
    address public minter;
    
    // Counter variables
    uint256 private _tokenIdCounter;
    
    // Contract metadata URI for OpenSea, etc.
    string private _contractURI;
    
    // BurnLock struct for storing lock details
    struct BurnLock {
        uint256 xenAmount;      // Amount of XEN tokens burned
        uint256 maturityTs;     // Timestamp when the lock matures
        uint256 ampSnapshot;    // Amplifier snapshot at lock creation
        uint256 termDays;       // Lock term in days
        address owner;          // Owner of the lock
        bool claimed;           // Whether rewards have been claimed
        uint256 rewardAmount;   // Total reward amount (base + bonus)
        uint256 baseMint;       // Base mint amount without amplifier bonus
        
    }

    // tokenId => BurnLock details
    mapping(uint256 => BurnLock) public burnLocks;

    // ------------------------------------------------
    // ================ Custom Errors ================
    // ------------------------------------------------
    
    error OnlyMinter(address caller, address minter);
    error AlreadyClaimed(uint256 tokenId);
    error NonexistentToken(uint256 tokenId);
    error LockedToken(uint256 tokenId);
    error InvalidTermDays(uint256 providedDays, uint256 maxDays);
    error ZeroAddressNotAllowed();
    error NotAuthorized(address caller);
    error BatchSizeTooLarge(uint256 provided, uint256 maximum);
    error RoyaltyTooHigh(uint256 provided, uint256 maximum);
    
    // ------------------------------------------------
    // ================= Events ======================
    // ------------------------------------------------
    
    event BurnLockCreated(
        uint256 indexed tokenId, 
        address indexed user, 
        uint256 amount, 
        uint256 termDays,
        uint256 maturityTimestamp
    );
    
    event MinterChanged(address indexed oldMinter, address indexed newMinter);
    event LockClaimed(uint256 indexed tokenId);
    event LockBurned(uint256 indexed tokenId);
    event ContractURIUpdated(string newURI);
    event RoyaltyInfoUpdated(address receiver, uint96 feeNumerator);

    // ------------------------------------------------
    // ================ Modifiers ====================
    // ------------------------------------------------
    
    /**
     * @dev Restricts function access to only the minter address
     */
    modifier onlyMinter() {
        if (msg.sender != minter) revert OnlyMinter(msg.sender, minter);
        _;
    }

    // ------------------------------------------------
    // ================ Constructor =================
    // ------------------------------------------------
    
    constructor() 
        ERC721("XEN Burn Lock", "XLOCK") 
        Ownable(msg.sender) 
    {
        // Set default royalty to 2.5% to contract owner
        _setDefaultRoyalty(msg.sender, 250);
        
        // Set default contract URI
        _contractURI = "data:application/json;base64,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";
    }

    // ------------------------------------------------
    // =============== NFT Minting ===================
    // ------------------------------------------------
    
    /**
     * @dev Internal function to create a lock
     * @param tokenId The NFT token ID
     * @param to The address that will own the NFT
     * @param xenAmount Amount of XEN burned
     * @param termDays Lock duration in days
     * @param ampSnapshot Amplifier value at lock creation
     * @param rewardAmount Total reward amount including bonuses
     */
    function _createLock(
        uint256 tokenId,
        address to,
        uint256 xenAmount,
        uint256 termDays,
        uint256 ampSnapshot,
        uint256 rewardAmount
    ) internal {
        // Calculate the base mint amount using the updated constant
        uint256 baseMint = xenAmount / BASE_RATIO; 
        
        // Set maturity timestamp
        uint256 maturityTs;
        if (termDays == 0) {
            // Immediately claimable if term is 0
            maturityTs = block.timestamp;
        } else {
            // Otherwise, add the exact number of days
            maturityTs = block.timestamp + (termDays * 1 days);
        }
            
        // Create the lock
        burnLocks[tokenId] = BurnLock({
            xenAmount: xenAmount,
            maturityTs: maturityTs,
            ampSnapshot: ampSnapshot,
            termDays: termDays,
            owner: to,
            claimed: false,
            rewardAmount: rewardAmount,
            baseMint: baseMint
        });
    }
    
    /**
     * @dev Mints a new XBURN lock NFT
     * @param to Address that will own the NFT
     * @param xenAmount Amount of XEN burned
     * @param termDays Lock duration in days
     * @param ampSnapshot Amplifier value at lock creation
     * @param rewardAmount Total reward amount including bonuses
     * @return tokenId The newly created token ID
     */
    function mint(
        address to,
        uint256 xenAmount,
        uint256 termDays,
        uint256 ampSnapshot,
        uint256 rewardAmount
    ) external onlyMinter returns (uint256) {
        // Validate inputs
        if (termDays > MAX_TERM_DAYS) revert InvalidTermDays(termDays, MAX_TERM_DAYS);
        if (to == address(0)) revert ZeroAddressNotAllowed();
        
        // Create new token ID
        uint256 tokenId = _tokenIdCounter++;
        
        // Create the lock
        _createLock(tokenId, to, xenAmount, termDays, ampSnapshot, rewardAmount);
        
        // Calculate maturity timestamp for the event
        uint256 maturityTs = termDays == 0 
            ? block.timestamp 
            : block.timestamp + (termDays * 1 days);
            
        // Emit event for indexing and tracking
        emit BurnLockCreated(tokenId, to, xenAmount, termDays, maturityTs);
        
        // Mint the NFT
        _safeMint(to, tokenId);
        
        return tokenId;
    }

    // ------------------------------------------------
    // ============= Lock Management =================
    // ------------------------------------------------
    
    /**
     * @dev Marks a lock as claimed
     * @param tokenId The token ID to update
     */
    function setClaimed(uint256 tokenId) external onlyMinter {
        if (_ownerOf(tokenId) == address(0)) revert NonexistentToken(tokenId);
        if (burnLocks[tokenId].claimed) revert AlreadyClaimed(tokenId);
        
        burnLocks[tokenId].claimed = true;
        emit LockClaimed(tokenId);
    }

    /**
     * @dev Burns an NFT (typically after claiming)
     * @param tokenId The token ID to burn
     */
    function burn(uint256 tokenId) external onlyMinter {
        if (_ownerOf(tokenId) == address(0)) revert NonexistentToken(tokenId);
        
        _burn(tokenId);
        emit LockBurned(tokenId);
    }

    // ------------------------------------------------
    // ================ Views ========================
    // ------------------------------------------------
    
    /**
     * @dev Gets all details for a specific lock
     * @param tokenId The token ID to query
     * @return xenAmount Amount of XEN burned
     * @return maturityTs Maturity timestamp
     * @return ampSnapshot Amplifier snapshot
     * @return termDays Lock term in days
     * @return claimed Whether rewards have been claimed
     * @return rewardAmount Total reward amount
     * @return baseMint Base mint amount
     * @return owner Owner of the lock
     */
    function getLockDetails(uint256 tokenId)
        external
        view
        returns (
            uint256 xenAmount,
            uint256 maturityTs,
            uint256 ampSnapshot,
            uint256 termDays,
            bool claimed,
            uint256 rewardAmount,
            uint256 baseMint,
            address owner
        )
    {
        if (_ownerOf(tokenId) == address(0)) revert NonexistentToken(tokenId);
        
        BurnLock storage lock = burnLocks[tokenId];
        return (
            lock.xenAmount,
            lock.maturityTs,
            lock.ampSnapshot,
            lock.termDays,
            lock.claimed,
            lock.rewardAmount,
            lock.baseMint,
            lock.owner
        );
    }

    /**
     * @dev Gets all lock token IDs owned by a specific user with pagination
     * @param user Address to query
     * @param page Page number (0-indexed)
     * @param pageSize Number of items per page
     * @return tokenIds Array of token IDs
     * @return totalPages Total number of pages available
     */
    function getAllUserLocks(address user, uint256 page, uint256 pageSize) 
        external 
        view 
        returns (uint256[] memory tokenIds, uint256 totalPages) 
    {
        // Protect against excessively large page sizes
        if (pageSize > MAX_BATCH_SIZE) revert BatchSizeTooLarge(pageSize, MAX_BATCH_SIZE);
        
        uint256 balance = balanceOf(user);

        // Calculate total pages with ceiling division
        totalPages = (balance + pageSize - 1) / pageSize;

        // Handle out of bounds pages
        if (page >= totalPages || balance == 0) {
            return (new uint256[](0), totalPages);
        }

        // Calculate actual page boundaries
        uint256 startIndex = page * pageSize;
        uint256 endIndex = startIndex + pageSize;
        if (endIndex > balance) {
            endIndex = balance;
        }

        // Create result array
        tokenIds = new uint256[](endIndex - startIndex);
        
        // Fill array with token IDs
        for (uint256 i = startIndex; i < endIndex; ++i) {
            tokenIds[i - startIndex] = tokenOfOwnerByIndex(user, i);
        }
        
        return (tokenIds, totalPages);
    }

    /**
     * @dev Returns metadata URI for a token
     * Uses the XBurnMetadata library to construct the URI.
     * @param tokenId The token ID to query
     * @return URI string with embedded metadata
     */
    function tokenURI(uint256 tokenId)
        public
        view
        override(ERC721) // Only override ERC721
        returns (string memory)
    {
        if (_ownerOf(tokenId) == address(0)) revert NonexistentToken(tokenId);

        // Get lock data directly
        BurnLock storage lock = burnLocks[tokenId];

        // Use the library to construct the full token URI
        // Note: Mapping the internal BurnLock struct to the library's version
        return XBurnMetadata.constructTokenURI(
            tokenId,
            XBurnMetadata.BurnLock({
                xenAmount: lock.xenAmount,
                maturityTs: lock.maturityTs,
                ampSnapshot: lock.ampSnapshot,
                termDays: lock.termDays,
                owner: _ownerOf(tokenId), // Use _ownerOf for current owner safety
                claimed: lock.claimed,
                rewardAmount: lock.rewardAmount,
                baseMint: lock.baseMint
            }),
            block.timestamp,
            address(this)
        );
    }

    // ------------------------------------------------
    // ================ Royalty Support ==============
    // ------------------------------------------------

    /**
     * @dev Returns the contract-level metadata URI for marketplaces (OpenSea, etc.)
     * @return Contract URI string
     */
    function contractURI() public view returns (string memory) {
        return _contractURI;
    }
    
    /**
     * @dev Sets the contract-level metadata URI
     * @param newURI New contract URI
     */
    function setContractURI(string memory newURI) external onlyOwner {
        _contractURI = newURI;
        emit ContractURIUpdated(newURI);
    }
    
    /**
     * @dev Sets a new royalty receiver and fee
     * @param receiver Address to receive royalties
     * @param feeNumerator Fee in basis points (e.g., 250 = 2.5%)
     */
    function setDefaultRoyalty(address receiver, uint96 feeNumerator) external onlyOwner {
        if (feeNumerator > 1000) revert RoyaltyTooHigh(feeNumerator, 1000); // Max 10%
        _setDefaultRoyalty(receiver, feeNumerator);
        emit RoyaltyInfoUpdated(receiver, feeNumerator);
    }
    
    /**
     * @dev Removes the default royalty configuration
     */
    function deleteDefaultRoyalty() external onlyOwner {
        _deleteDefaultRoyalty();
        emit RoyaltyInfoUpdated(address(0), 0);
    }

    // ------------------------------------------------
    // ================ Admin Functions ==============
    // ------------------------------------------------
    
    /**
     * @dev Sets the minter address
     * @param newMinter The new minter address
     */
    function setMinter(address newMinter) public {
        if (msg.sender != minter && msg.sender != owner() && minter != address(0)) {
            revert NotAuthorized(msg.sender);
        }
        if (newMinter == address(0)) revert ZeroAddressNotAllowed();
        
        address oldMinter = minter;
        minter = newMinter;
        
        emit MinterChanged(oldMinter, newMinter);
    }

    // ------------------------------------------------
    // ============ Internal Overrides ===============
    // ------------------------------------------------

    /**
     * @dev Update hook from ERC721
     * Updates owner in burnLocks when token is transferred
     * @param to Address receiving the token
     * @param tokenId Token ID being transferred
     * @param auth Address authorized to make the transfer
     * @return from Address that previously owned the token
     */
    function _update(
        address to,
        uint256 tokenId,
        address auth
    ) internal virtual override(ERC721, ERC721Enumerable) returns (address) {
        address from = super._update(to, tokenId, auth);
        
        // Update owner in burnLocks when transferring
        if (from != address(0) && to != address(0)) {
            // Prevent transfer of claimed tokens
            if (burnLocks[tokenId].claimed) revert LockedToken(tokenId);
            
            // Update ownership record in the lock struct itself
            burnLocks[tokenId].owner = to;
        }
        
        return from;
    }

    /**
     * @dev Required override for ERC721Enumerable
     * @param account Address to increase balance for
     * @param value Amount to increase balance by
     */
    function _increaseBalance(
        address account,
        uint128 value
    ) internal virtual override(ERC721, ERC721Enumerable) {
        super._increaseBalance(account, value);
    }

    /**
     * @dev Required override for interface support including EIP-2981
     * @param interfaceId Interface identifier
     * @return bool True if supported
     */
    function supportsInterface(
        bytes4 interfaceId
    ) public view virtual override(ERC721, ERC721Enumerable, ERC2981) returns (bool) {
        // Use super call for cleaner inheritance check
        return super.supportsInterface(interfaceId);
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "viaIR": true,
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_xen","type":"address"},{"internalType":"address","name":"_router","type":"address"},{"internalType":"address","name":"_nft","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"allowance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientAllowance","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"balance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientBalance","type":"error"},{"inputs":[{"internalType":"address","name":"approver","type":"address"}],"name":"ERC20InvalidApprover","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC20InvalidReceiver","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"ERC20InvalidSender","type":"error"},{"inputs":[{"internalType":"address","name":"spender","type":"address"}],"name":"ERC20InvalidSpender","type":"error"},{"inputs":[{"internalType":"uint256","name":"required","type":"uint256"},{"internalType":"uint256","name":"provided","type":"uint256"}],"name":"InsufficientXen","type":"error"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"InvalidAmount","type":"error"},{"inputs":[{"internalType":"uint256","name":"providedDays","type":"uint256"},{"internalType":"uint256","name":"maxDays","type":"uint256"}],"name":"InvalidTerm","type":"error"},{"inputs":[],"name":"LiquidityAlreadyInitialized","type":"error"},{"inputs":[],"name":"LiquidityNotInitialized","type":"error"},{"inputs":[],"name":"LiquidityPairNotSet","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"provided","type":"address"},{"internalType":"address","name":"actual","type":"address"}],"name":"NotTokenOwner","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[{"internalType":"uint256","name":"current","type":"uint256"},{"internalType":"uint256","name":"required","type":"uint256"}],"name":"PendingXenTooLow","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[{"internalType":"string","name":"reason","type":"string"}],"name":"SwapFailedError","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"TokenAlreadyClaimed","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"TokenNotClaimable","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"maturityTs","type":"uint256"},{"internalType":"uint256","name":"currentTime","type":"uint256"}],"name":"TokenNotMatured","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"expected","type":"address"}],"name":"UnauthorizedCallback","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"xenAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"termDays","type":"uint256"}],"name":"BurnNFTMinted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"CallerRewarded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"baseAmount","type":"uint256"}],"name":"EmergencyEnd","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"totalXenBurned","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalXburnMinted","type":"uint256"}],"name":"GlobalStatsUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amountXBURN","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountXEN","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"liquidity","type":"uint256"}],"name":"LiquidityInitialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"reason","type":"string"},{"indexed":false,"internalType":"string","name":"message","type":"string"},{"indexed":false,"internalType":"uint256","name":"xenAmount","type":"uint256"}],"name":"SwapFailed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"XBURNBurned","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"baseAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"bonusAmount","type":"uint256"}],"name":"XBURNClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"XENBurned","type":"event"},{"inputs":[],"name":"AMP_END","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"AMP_START","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"BASE_RATIO","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CALLER_REWARD_PERCENTAGE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"INITIAL_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LAUNCH_TS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_BATCH_SIZE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_DEADLINE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_TERM","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MINIMUM_LIQUIDITY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_TERM","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SWAP_THRESHOLD","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"XEN","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"termDays","type":"uint256"}],"name":"burnXEN","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burnXburn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"claimLockedXBURN","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"emergencyEnd","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getAccumulationProgress","outputs":[{"internalType":"uint256","name":"accumulated","type":"uint256"},{"internalType":"uint256","name":"threshold","type":"uint256"},{"internalType":"uint256","name":"percentage","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getGlobalStats","outputs":[{"internalType":"uint256","name":"currentAMP","type":"uint256"},{"internalType":"uint256","name":"daysSinceLaunch","type":"uint256"},{"internalType":"uint256","name":"totalBurnedXEN","type":"uint256"},{"internalType":"uint256","name":"totalMintedXBURN","type":"uint256"},{"internalType":"uint256","name":"ampDecayDaysLeft","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getStats","outputs":[{"internalType":"uint256","name":"userXenBurnedAmount","type":"uint256"},{"internalType":"uint256","name":"userXburnBurnedAmount","type":"uint256"},{"internalType":"uint256","name":"userXburnBalance","type":"uint256"},{"internalType":"uint256","name":"userBurnPercentage","type":"uint256"},{"internalType":"uint256","name":"globalXenBurned","type":"uint256"},{"internalType":"uint256","name":"globalXburnBurned","type":"uint256"},{"internalType":"uint256","name":"totalXburnSupply","type":"uint256"},{"internalType":"uint256","name":"globalBurnPercentage","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getTokenStats","outputs":[{"internalType":"uint256","name":"xenAmount","type":"uint256"},{"internalType":"uint256","name":"baseMint","type":"uint256"},{"internalType":"uint256","name":"rewardAmount","type":"uint256"},{"internalType":"uint256","name":"maturityTs","type":"uint256"},{"internalType":"bool","name":"isClaimable","type":"bool"},{"internalType":"bool","name":"isClaimed","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"page","type":"uint256"},{"internalType":"uint256","name":"pageSize","type":"uint256"}],"name":"getUserLocks","outputs":[{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"uint256","name":"totalPages","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserLocks","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserStats","outputs":[{"internalType":"uint256","name":"xenBurned","type":"uint256"},{"internalType":"uint256","name":"xburnBalance","type":"uint256"},{"internalType":"uint256","name":"totalTokens","type":"uint256"},{"internalType":"uint256","name":"claimableTokens","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"globalBurnRank","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"xenAmount","type":"uint256"}],"name":"initializeLiquidity","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"liquidityInitialized","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"liquidityPair","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nftContract","outputs":[{"internalType":"contract XBurnNFT","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"onTokenBurned","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingXen","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"minXburnReceived","type":"uint256"}],"name":"swapXenForXburn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalXburnBurned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalXburnMinted","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalXenBurned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"uniswapRouter","outputs":[{"internalType":"contract IUniswapV2Router02","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userXburnBurned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userXburnMinted","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userXenBurned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"validatePairTokens","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"daysFromLaunch","type":"uint256"}],"name":"verifyAmpCalculation","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

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

000000000000000000000000eb585163debb1e637c6d617de3bef99347cd75c80000000000000000000000004a7b5da61326a6379179b40d00f57e5bbdc962c2000000000000000000000000d7dd1997ed8d5b836099e5d28fed1a9d8e9cc723

-----Decoded View---------------
Arg [0] : _xen (address): 0xeB585163DEbB1E637c6D617de3bEF99347cd75c8
Arg [1] : _router (address): 0x4A7b5Da61326A6379179b40d00F57E5bbDC962c2
Arg [2] : _nft (address): 0xD7DD1997Ed8d5b836099e5D28FeD1A9d8e9Cc723

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000eb585163debb1e637c6d617de3bef99347cd75c8
Arg [1] : 0000000000000000000000004a7b5da61326a6379179b40d00f57e5bbdc962c2
Arg [2] : 000000000000000000000000d7dd1997ed8d5b836099e5d28fed1a9d8e9cc723