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//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.7.6;
pragma experimental ABIEncoderV2;

import "./interfaces/IPoolLogic.sol";
import "./interfaces/IPoolManagerLogic.sol";
import "./interfaces/IHasAssetInfo.sol";
import "./interfaces/IHasFeeInfo.sol";
import "./interfaces/IHasDaoInfo.sol";
import "./interfaces/IHasProtocolDaoInfo.sol";
import "./interfaces/IHasGuardInfo.sol";
import "./interfaces/IHasSupportedAsset.sol";
import "./interfaces/IHasOwnable.sol";
import "./interfaces/guards/IGuard.sol";
import "./interfaces/guards/IAssetGuard.sol";
import "./interfaces/IPoolFactory.sol";
import "./Managed.sol";

import "@openzeppelin/contracts-upgradeable/proxy/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/math/SafeMathUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC721/ERC721Upgradeable.sol";

/// @notice Logic implmentation for pool manager
contract PoolManagerLogic is Initializable, IPoolManagerLogic, IHasSupportedAsset, Managed {
  using SafeMathUpgradeable for uint256;
  using AddressUpgradeable for address;

  event AssetAdded(address indexed fundAddress, address manager, address asset, bool isDeposit);
  event AssetRemoved(address fundAddress, address manager, address asset);

  event ManagerFeeSet(
    address fundAddress,
    address manager,
    uint256 performanceFeeNumerator,
    uint256 managerFeeNumerator,
    uint256 entryFeeNumerator,
    uint256 denominator
  );

  event ManagerFeeIncreaseAnnounced(
    uint256 performanceFeeNumerator,
    uint256 managerFeeNumerator,
    uint256 announcedFeeActivationTime
  );

  event ManagerFeeIncreaseRenounced();
  event PoolLogicSet(address poolLogic, address from);

  event MinDepositUpdated(uint256 minDepositUSD);

  address public override factory;
  address public override poolLogic;

  Asset[] public supportedAssets;
  mapping(address => uint256) public assetPosition; // maps the asset to its 1-based position

  // Fee increase announcement
  uint256 public announcedPerformanceFeeNumerator;
  uint256 public announcedFeeIncreaseTimestamp;
  uint256 public performanceFeeNumerator;
  uint256 public announcedManagerFeeNumerator;
  uint256 public managerFeeNumerator;

  // Should be in Managed.sol but not upgradable
  address public nftMembershipCollectionAddress;

  uint256 public override minDepositUSD;

  uint256 public announcedEntryFeeNumerator;
  uint256 public entryFeeNumerator;

  modifier onlyManagerOrTraderOrFactory() {
    require(msg.sender == manager || msg.sender == trader || msg.sender == factory, "only manager, trader or factory");
    _;
  }

  /// @notice initialize the pool manager
  /// @param _factory address of the factory
  /// @param _manager address of the manager
  /// @param _managerName name of the manager
  /// @param _poolLogic address of the pool logic
  /// @param _performanceFeeNumerator numerator of the manager fee
  /// @param _supportedAssets array of supported assets
  function initialize(
    address _factory,
    address _manager,
    string calldata _managerName,
    address _poolLogic,
    uint256 _performanceFeeNumerator,
    uint256 _managerFeeNumerator,
    Asset[] calldata _supportedAssets
  ) external initializer {
    require(_factory != address(0), "Invalid factory");
    require(_manager != address(0), "Invalid manager");
    require(_poolLogic != address(0), "Invalid poolLogic");
    initialize(_manager, _managerName);

    factory = _factory;
    poolLogic = _poolLogic;
    _setFeeNumerator(_performanceFeeNumerator, _managerFeeNumerator, 0); // By default entry fee will be set as 0%
    _changeAssets(_supportedAssets, new address[](0));
  }

  /// @notice Return true if it's supported asset, false otherwise
  /// @param asset address of the asset
  function isSupportedAsset(address asset) public view override returns (bool) {
    return assetPosition[asset] != 0;
  }

  /// @notice Return true if it's deposit asset, false otherwise
  /// @param asset address of the asset
  function isDepositAsset(address asset) public view override returns (bool) {
    uint256 index = assetPosition[asset];

    return index != 0 && supportedAssets[index.sub(1)].isDeposit;
  }

  /// @notice Return true if it's valid asset, false otherwise
  /// @param asset address of the asset
  function validateAsset(address asset) public view override returns (bool) {
    return IHasAssetInfo(factory).isValidAsset(asset);
  }

  /// @notice Change assets of the pool
  /// @param _addAssets array of assets to add
  /// @param _removeAssets array of asset addresses to remove
  function changeAssets(Asset[] calldata _addAssets, address[] calldata _removeAssets)
    external
    onlyManagerOrTraderOrFactory
  {
    _changeAssets(_addAssets, _removeAssets);
    emitFactoryEvent();
  }

  /// @notice Change assets of the pool internal call
  /// @param _addAssets array of assets to add
  /// @param _removeAssets array of asset addresses to remove
  function _changeAssets(Asset[] calldata _addAssets, address[] memory _removeAssets) internal {
    for (uint8 i = 0; i < _removeAssets.length; i++) {
      _removeAsset(_removeAssets[i]);
    }

    for (uint8 i = 0; i < _addAssets.length; i++) {
      _addAsset(_addAssets[i]);
    }

    require(supportedAssets.length <= IHasAssetInfo(factory).getMaximumSupportedAssetCount(), "maximum assets reached");

    require(getDepositAssets().length >= 1, "at least one deposit asset");
  }

  /// @notice Add an asset to the pool
  /// @param _asset an asset struct
  function _addAsset(Asset calldata _asset) internal {
    address asset = _asset.asset;
    bool isDeposit = _asset.isDeposit;

    require(validateAsset(asset), "invalid asset");
    // Pools with price aggregators cannot add other pools as assets
    require(!validateAsset(poolLogic) || !IPoolFactory(factory).isPool(asset), "cannot add pool asset");

    if (isSupportedAsset(asset)) {
      uint256 index = assetPosition[asset].sub(1);
      supportedAssets[index].isDeposit = isDeposit;
    } else {
      uint256 i = supportedAssets.length;
      supportedAssets.push(_asset);
      assetPosition[asset] = i.add(1); // adjusting the index because the map stores 1-based
      uint16 assetType = IHasAssetInfo(factory).getAssetType(asset);
      for (i; i > 0 && IHasAssetInfo(factory).getAssetType(supportedAssets[i.sub(1)].asset) < assetType; i--) {
        Asset memory temp = supportedAssets[i];
        supportedAssets[i] = supportedAssets[i.sub(1)];
        assetPosition[supportedAssets[i].asset] = i.add(1);
        supportedAssets[i.sub(1)] = temp;
        assetPosition[supportedAssets[i.sub(1)].asset] = i;
      }
    }

    emit AssetAdded(poolLogic, manager, asset, isDeposit);
  }

  /// @notice Remove asset from the pool
  /// @dev use asset address to remove from supportedAssets
  /// @param asset asset address
  function _removeAsset(address asset) internal {
    require(isSupportedAsset(asset), "asset not supported");

    address guard = IHasGuardInfo(factory).getAssetGuard(asset);
    if (guard != address(0)) {
      // should be able to remove any deprecated assets
      require(assetBalance(asset) == 0, "cannot remove non-empty asset");
      IAssetGuard(guard).removeAssetCheck(poolLogic, asset);
    }

    uint256 index = assetPosition[asset].sub(1); // adjusting the index because the map stores 1-based
    uint256 length = supportedAssets.length;
    for (uint256 i = index; i.add(1) < length; i++) {
      Asset memory temp = supportedAssets[i];
      supportedAssets[i] = supportedAssets[i.add(1)];
      assetPosition[supportedAssets[i].asset] = i.add(1);
      supportedAssets[i.add(1)] = temp;
      assetPosition[supportedAssets[i.add(1)].asset] = i.add(2);
    }

    assetPosition[supportedAssets[length.sub(1)].asset] = 0;
    supportedAssets.pop();

    emit AssetRemoved(poolLogic, manager, asset);
  }

  /// @notice Get all the supported assets
  /// @return Return array of supported assets
  function getSupportedAssets() external view override returns (Asset[] memory) {
    return supportedAssets;
  }

  /// @notice Get all the deposit assets
  /// @return Return array of deposit assets' addresses
  function getDepositAssets() public view returns (address[] memory) {
    uint256 assetCount = supportedAssets.length;
    address[] memory depositAssets = new address[](assetCount);
    uint8 index = 0;
    for (uint8 i = 0; i < assetCount; i++) {
      if (supportedAssets[i].isDeposit) {
        depositAssets[index] = supportedAssets[i].asset;
        index++;
      }
    }
    // Reduce length for withdrawnAssets to remove the empty items
    uint256 reduceLength = assetCount.sub(index);
    assembly {
      mstore(depositAssets, sub(mload(depositAssets), reduceLength))
    }
    return depositAssets;
  }

  /// @notice Get asset balance including any staked balance in external contracts
  /// @return balance of the asset
  function assetBalance(address asset) public view override returns (uint256 balance) {
    address guard = IHasGuardInfo(factory).getAssetGuard(asset);
    balance = IAssetGuard(guard).getBalance(poolLogic, asset);
  }

  /// @notice Get asset decimal
  /// @return decimal of the asset
  function assetDecimal(address asset) public view returns (uint256 decimal) {
    address guard = IHasGuardInfo(factory).getAssetGuard(asset);
    decimal = IAssetGuard(guard).getDecimals(asset);
  }

  /// @notice Get value of the asset
  /// @param asset address of the asset
  /// @param amount amount of the asset
  /// @return value of the asset
  function assetValue(address asset, uint256 amount) public view override returns (uint256 value) {
    uint256 price = IHasAssetInfo(factory).getAssetPrice(asset);
    uint256 decimals = assetDecimal(asset);

    value = price.mul(amount).div(10**decimals);
  }

  /// @notice Get value of the asset
  /// @param asset address of the asset
  /// @return value of the asset
  function assetValue(address asset) public view override returns (uint256 value) {
    value = assetValue(asset, assetBalance(asset));
  }

  /// @notice Return the fund composition of the pool
  /// @dev Return assets, balances of the asset and their prices
  /// @return assets array of supported assets
  /// @return balances balances of each asset
  /// @return rates price of each asset in USD
  function getFundComposition()
    public
    view
    returns (
      Asset[] memory assets,
      uint256[] memory balances,
      uint256[] memory rates
    )
  {
    uint256 assetCount = supportedAssets.length;
    assets = new Asset[](assetCount);
    balances = new uint256[](assetCount);
    rates = new uint256[](assetCount);

    for (uint8 i = 0; i < assetCount; i++) {
      address asset = supportedAssets[i].asset;
      balances[i] = assetBalance(asset);
      assets[i] = supportedAssets[i];
      rates[i] = IHasAssetInfo(factory).getAssetPrice(asset);
    }
  }

  /// @notice Return the total fund value of the pool
  /// @dev Calculate the total fund value from the supported assets
  /// @return value in USD
  function totalFundValue() external view override returns (uint256) {
    uint256 total = 0;
    uint256 assetCount = supportedAssets.length;

    for (uint256 i = 0; i < assetCount; i++) {
      total = total.add(assetValue(supportedAssets[i].asset));
    }
    return total;
  }

  /* ========== MANAGER FEES ========== */

  /// @notice Return the manager fees
  function getFee()
    external
    view
    override
    returns (
      uint256,
      uint256,
      uint256,
      uint256
    )
  {
    (, , , uint256 managerFeeDenominator) = IHasFeeInfo(factory).getMaximumFee();
    return (performanceFeeNumerator, managerFeeNumerator, entryFeeNumerator, managerFeeDenominator);
  }

  /// @notice Get maximum manager fee
  /// @return numerator numerator of the maximum manager fee
  /// @return entryFeeNumerator numerator of the maximum entry fee
  /// @return denominator denominator of the maximum manager fee
  function getMaximumFee()
    public
    view
    returns (
      uint256,
      uint256,
      uint256,
      uint256
    )
  {
    return IHasFeeInfo(factory).getMaximumFee();
  }

  /// @notice Get maximum manager fee change
  /// @return change change of the maximum manager fee
  function getMaximumPerformanceFeeChange() public view returns (uint256 change) {
    change = IHasFeeInfo(factory).maximumPerformanceFeeNumeratorChange();
  }

  // Manager fee decreases

  /// @notice Manager can decrease performance fee
  /// @param _performanceFeeNumerator The numerator of the maximum manager fee
  /// @param _managerFeeNumerator The numerator of the maximum streaming fee
  function setFeeNumerator(
    uint256 _performanceFeeNumerator,
    uint256 _managerFeeNumerator,
    uint256 _entryFeeNumerator
  ) external onlyManager {
    require(
      _performanceFeeNumerator <= performanceFeeNumerator &&
        _managerFeeNumerator <= managerFeeNumerator &&
        _entryFeeNumerator <= entryFeeNumerator,
      "manager fee too high"
    );
    _setFeeNumerator(_performanceFeeNumerator, _managerFeeNumerator, _entryFeeNumerator);
    emitFactoryEvent();
  }

  /// @notice Manager can decrease performance fee internal call
  /// @param _performanceFeeNumerator The numerator of the maximum manager fee
  /// @param _managerFeeNumerator The numerator of the maximum streaming fee
  function _setFeeNumerator(
    uint256 _performanceFeeNumerator,
    uint256 _managerFeeNumerator,
    uint256 _entryFeeNumerator
  ) internal {
    (
      uint256 maximumPerformanceFeeNumerator,
      uint256 maximumManagerFeeNumerator,
      uint256 maximumEntryFeeNumerator,
      uint256 denominator
    ) = getMaximumFee();
    require(
      _performanceFeeNumerator <= maximumPerformanceFeeNumerator &&
        _managerFeeNumerator <= maximumManagerFeeNumerator &&
        _entryFeeNumerator <= maximumEntryFeeNumerator,
      "invalid manager fee"
    );

    performanceFeeNumerator = _performanceFeeNumerator;
    managerFeeNumerator = _managerFeeNumerator;
    entryFeeNumerator = _entryFeeNumerator;

    emit ManagerFeeSet(
      poolLogic,
      manager,
      _performanceFeeNumerator,
      _managerFeeNumerator,
      _entryFeeNumerator,
      denominator
    );
  }

  // Manager fee increases

  /// @notice Manager can announce an increase to the performance fee
  /// @dev The commit to the new fee can happen after a time delay
  /// @param _performanceFeeNumerator The numerator of the maximum manager fee
  /// @param _managerFeeNumerator The numerator of the maximum streaming fee
  function announceFeeIncrease(
    uint256 _performanceFeeNumerator,
    uint256 _managerFeeNumerator,
    uint256 _entryFeeNumerator
  ) external onlyManager {
    (
      uint256 maximumPerformanceFeeNumerator,
      uint256 maximumManagerFeeNumerator,
      uint256 maximumEntryFeeNumerator,

    ) = getMaximumFee();
    uint256 maximumAllowedChange = getMaximumPerformanceFeeChange();

    require(
      _performanceFeeNumerator <= maximumPerformanceFeeNumerator &&
        _managerFeeNumerator <= maximumManagerFeeNumerator &&
        _entryFeeNumerator <= maximumEntryFeeNumerator &&
        _performanceFeeNumerator <= performanceFeeNumerator.add(maximumAllowedChange),
      "exceeded allowed increase"
    );

    uint256 feeChangeDelay = IHasFeeInfo(factory).performanceFeeNumeratorChangeDelay();

    announcedPerformanceFeeNumerator = _performanceFeeNumerator;
    announcedManagerFeeNumerator = _managerFeeNumerator;
    announcedEntryFeeNumerator = _entryFeeNumerator;
    announcedFeeIncreaseTimestamp = block.timestamp + feeChangeDelay;
    emit ManagerFeeIncreaseAnnounced(_performanceFeeNumerator, _managerFeeNumerator, announcedFeeIncreaseTimestamp);
    emitFactoryEvent();
  }

  /// @notice Manager can cancel the performance fee increase
  /// @dev Fee increase needs to be announced first
  function renounceFeeIncrease() external onlyManager {
    announcedPerformanceFeeNumerator = 0;
    announcedManagerFeeNumerator = 0;
    announcedEntryFeeNumerator = 0;
    announcedFeeIncreaseTimestamp = 0;
    emit ManagerFeeIncreaseRenounced();
    emitFactoryEvent();
  }

  /// @notice Manager can commit the performance fee increase
  /// @dev Fee increase needs to be announced first
  function commitFeeIncrease() external onlyManager {
    require(block.timestamp >= announcedFeeIncreaseTimestamp, "fee increase delay active");

    IPoolLogic(poolLogic).mintManagerFee();

    _setFeeNumerator(announcedPerformanceFeeNumerator, announcedManagerFeeNumerator, announcedEntryFeeNumerator);

    announcedPerformanceFeeNumerator = 0;
    announcedManagerFeeNumerator = 0;
    announcedEntryFeeNumerator = 0;
    announcedFeeIncreaseTimestamp = 0;
  }

  /// @notice Get manager fee increase information
  function getFeeIncreaseInfo()
    external
    view
    returns (
      uint256,
      uint256,
      uint256,
      uint256
    )
  {
    return (
      announcedPerformanceFeeNumerator,
      announcedManagerFeeNumerator,
      announcedEntryFeeNumerator,
      announcedFeeIncreaseTimestamp
    );
  }

  /// @notice Setter for poolLogic contract
  /// @dev Not required to be used under normal circumstances
  function setPoolLogic(address _poolLogic) external override returns (bool) {
    address owner = IHasOwnable(factory).owner();
    require(msg.sender == owner, "only owner address allowed");

    require(IPoolLogic(_poolLogic).poolManagerLogic() == address(this), "invalid pool logic");

    poolLogic = _poolLogic;
    emit PoolLogicSet(_poolLogic, msg.sender);
    emitFactoryEvent();
    return true;
  }

  /// @notice Set the address of the nftMembershipCollectionAddress
  /// @param newNftMembershipCollectionAddress The address of the new nftMembershipCollectionAddress
  function setNftMembershipCollectionAddress(address newNftMembershipCollectionAddress) external onlyManager {
    if (newNftMembershipCollectionAddress == address(0)) {
      nftMembershipCollectionAddress = newNftMembershipCollectionAddress;
      return;
    }
    try ERC721Upgradeable(newNftMembershipCollectionAddress).balanceOf(address(this)) returns (uint256) {
      nftMembershipCollectionAddress = newNftMembershipCollectionAddress;
    } catch {
      revert("Invalid collection");
    }
  }

  /// @notice Set minimum deposit amount in USD
  /// @param _minDepositUSD minimum deposit amount in USD
  function setMinDepositUSD(uint256 _minDepositUSD) external onlyManager {
    _setMinDepositUSD(_minDepositUSD);
    emitFactoryEvent();
  }

  /// @notice Set minimum deposit amount in USD internal call
  /// @param _minDepositUSD minimum deposit amount in USD
  function _setMinDepositUSD(uint256 _minDepositUSD) internal {
    minDepositUSD = _minDepositUSD;
    emit MinDepositUpdated(_minDepositUSD);
  }

  /// @notice Return boolean if the there is a nftMembership address set and the member owns one
  /// @param member The address of the member
  /// @return True if the address owns an nft
  function isNftMemberAllowed(address member) public view returns (bool) {
    return (nftMembershipCollectionAddress != address(0) &&
      ERC721Upgradeable(nftMembershipCollectionAddress).balanceOf(member) > 0);
  }

  /// @notice Return boolean if the address is a member of the list or owns an nft in the membership collection
  /// @param member The address of the member
  /// @return True if the address is a member of the list or owns nft in the membership collection, false otherwise
  function isMemberAllowed(address member) public view virtual override returns (bool) {
    return _isMemberAllowed(member) || isNftMemberAllowed(member);
  }

  /// @notice Emits an event through the factory, so we can just listen to the factory offchain
  function emitFactoryEvent() internal {
    IPoolFactory(factory).emitPoolManagerEvent();
  }

  uint256[45] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "./IERC165Upgradeable.sol";
import "../proxy/Initializable.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts may inherit from this and call {_registerInterface} to declare
 * their support of an interface.
 */
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
    /*
     * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
     */
    bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;

    /**
     * @dev Mapping of interface ids to whether or not it's supported.
     */
    mapping(bytes4 => bool) private _supportedInterfaces;

    function __ERC165_init() internal initializer {
        __ERC165_init_unchained();
    }

    function __ERC165_init_unchained() internal initializer {
        // Derived contracts need only register support for their own interfaces,
        // we register support for ERC165 itself here
        _registerInterface(_INTERFACE_ID_ERC165);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     *
     * Time complexity O(1), guaranteed to always use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return _supportedInterfaces[interfaceId];
    }

    /**
     * @dev Registers the contract as an implementer of the interface defined by
     * `interfaceId`. Support of the actual ERC165 interface is automatic and
     * registering its interface id is not required.
     *
     * See {IERC165-supportsInterface}.
     *
     * Requirements:
     *
     * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
     */
    function _registerInterface(bytes4 interfaceId) internal virtual {
        require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
        _supportedInterfaces[interfaceId] = true;
    }
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165Upgradeable {
    /**
     * @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[EIP 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

pragma solidity ^0.7.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when 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 SafeMathUpgradeable {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: MIT

// solhint-disable-next-line compiler-version
pragma solidity >=0.4.24 <0.8.0;

import "../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {

    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || _isConstructor() || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }

    /// @dev Returns true if and only if the function is running in the constructor
    function _isConstructor() private view returns (bool) {
        return !AddressUpgradeable.isContract(address(this));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "../../utils/ContextUpgradeable.sol";
import "./IERC721Upgradeable.sol";
import "./IERC721MetadataUpgradeable.sol";
import "./IERC721EnumerableUpgradeable.sol";
import "./IERC721ReceiverUpgradeable.sol";
import "../../introspection/ERC165Upgradeable.sol";
import "../../math/SafeMathUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/EnumerableSetUpgradeable.sol";
import "../../utils/EnumerableMapUpgradeable.sol";
import "../../utils/StringsUpgradeable.sol";
import "../../proxy/Initializable.sol";

/**
 * @title ERC721 Non-Fungible Token Standard basic implementation
 * @dev see https://eips.ethereum.org/EIPS/eip-721
 */
contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable, IERC721EnumerableUpgradeable {
    using SafeMathUpgradeable for uint256;
    using AddressUpgradeable for address;
    using EnumerableSetUpgradeable for EnumerableSetUpgradeable.UintSet;
    using EnumerableMapUpgradeable for EnumerableMapUpgradeable.UintToAddressMap;
    using StringsUpgradeable for uint256;

    // Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
    // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
    bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;

    // Mapping from holder address to their (enumerable) set of owned tokens
    mapping (address => EnumerableSetUpgradeable.UintSet) private _holderTokens;

    // Enumerable mapping from token ids to their owners
    EnumerableMapUpgradeable.UintToAddressMap private _tokenOwners;

    // Mapping from token ID to approved address
    mapping (uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping (address => mapping (address => bool)) private _operatorApprovals;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Optional mapping for token URIs
    mapping (uint256 => string) private _tokenURIs;

    // Base URI
    string private _baseURI;

    /*
     *     bytes4(keccak256('balanceOf(address)')) == 0x70a08231
     *     bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e
     *     bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3
     *     bytes4(keccak256('getApproved(uint256)')) == 0x081812fc
     *     bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465
     *     bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5
     *     bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd
     *     bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e
     *     bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde
     *
     *     => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^
     *        0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd
     */
    bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;

    /*
     *     bytes4(keccak256('name()')) == 0x06fdde03
     *     bytes4(keccak256('symbol()')) == 0x95d89b41
     *     bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd
     *
     *     => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f
     */
    bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;

    /*
     *     bytes4(keccak256('totalSupply()')) == 0x18160ddd
     *     bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59
     *     bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7
     *
     *     => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63
     */
    bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    function __ERC721_init(string memory name_, string memory symbol_) internal initializer {
        __Context_init_unchained();
        __ERC165_init_unchained();
        __ERC721_init_unchained(name_, symbol_);
    }

    function __ERC721_init_unchained(string memory name_, string memory symbol_) internal initializer {
        _name = name_;
        _symbol = symbol_;

        // register the supported interfaces to conform to ERC721 via ERC165
        _registerInterface(_INTERFACE_ID_ERC721);
        _registerInterface(_INTERFACE_ID_ERC721_METADATA);
        _registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _holderTokens[owner].length();
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
    }

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

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

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory _tokenURI = _tokenURIs[tokenId];
        string memory base = baseURI();

        // If there is no base URI, return the token URI.
        if (bytes(base).length == 0) {
            return _tokenURI;
        }
        // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
        if (bytes(_tokenURI).length > 0) {
            return string(abi.encodePacked(base, _tokenURI));
        }
        // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
        return string(abi.encodePacked(base, tokenId.toString()));
    }

    /**
    * @dev Returns the base URI set via {_setBaseURI}. This will be
    * automatically added as a prefix in {tokenURI} to each token's URI, or
    * to the token ID if no specific URI is set for that token ID.
    */
    function baseURI() public view virtual returns (string memory) {
        return _baseURI;
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        return _holderTokens[owner].at(index);
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        // _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
        return _tokenOwners.length();
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        (uint256 tokenId, ) = _tokenOwners.at(index);
        return tokenId;
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721Upgradeable.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(_msgSender() == owner || ERC721Upgradeable.isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

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

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(address from, address to, uint256 tokenId) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

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

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol 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 equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - 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, bytes memory _data) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _tokenOwners.contains(tokenId);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721Upgradeable.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || ERC721Upgradeable.isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     d*
     * - `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 virtual {
        _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);
        require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @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 virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _holderTokens[to].add(tokenId);

        _tokenOwners.set(tokenId, to);

        emit Transfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721Upgradeable.ownerOf(tokenId); // internal owner

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        // Clear metadata (if any)
        if (bytes(_tokenURIs[tokenId]).length != 0) {
            delete _tokenURIs[tokenId];
        }

        _holderTokens[owner].remove(tokenId);

        _tokenOwners.remove(tokenId);

        emit Transfer(owner, address(0), 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 virtual {
        require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _holderTokens[from].remove(tokenId);
        _holderTokens[to].add(tokenId);

        _tokenOwners.set(tokenId, to);

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
        require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
        _tokenURIs[tokenId] = _tokenURI;
    }

    /**
     * @dev Internal function to set the base URI for all token IDs. It is
     * automatically added as a prefix to the value returned in {tokenURI},
     * or to the token ID if {tokenURI} is empty.
     */
    function _setBaseURI(string memory baseURI_) internal virtual {
        _baseURI = baseURI_;
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
        private returns (bool)
    {
        if (!to.isContract()) {
            return true;
        }
        bytes memory returndata = to.functionCall(abi.encodeWithSelector(
            IERC721ReceiverUpgradeable(to).onERC721Received.selector,
            _msgSender(),
            from,
            tokenId,
            _data
        ), "ERC721: transfer to non ERC721Receiver implementer");
        bytes4 retval = abi.decode(returndata, (bytes4));
        return (retval == _ERC721_RECEIVED);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits an {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId); // internal owner
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
    uint256[41] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "./IERC721Upgradeable.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721EnumerableUpgradeable is IERC721Upgradeable {

    /**
     * @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 tokenId);

    /**
     * @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

pragma solidity ^0.7.0;

import "./IERC721Upgradeable.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721MetadataUpgradeable is IERC721Upgradeable {

    /**
     * @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

pragma solidity ^0.7.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721ReceiverUpgradeable {
    /**
     * @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 `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "../../introspection/IERC165Upgradeable.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @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`, checking first that contract recipients
     * are aware of the ERC721 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 be 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: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * 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 Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @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 caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @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);

    /**
      * @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;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;
import "../proxy/Initializable.sol";

/*
 * @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 GSN 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 ContextUpgradeable is Initializable {
    function __Context_init() internal initializer {
        __Context_init_unchained();
    }

    function __Context_init_unchained() internal initializer {
    }
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev Library for managing an enumerable variant of Solidity's
 * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
 * type.
 *
 * Maps have the following properties:
 *
 * - Entries are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Entries are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableMap for EnumerableMap.UintToAddressMap;
 *
 *     // Declare a set state variable
 *     EnumerableMap.UintToAddressMap private myMap;
 * }
 * ```
 *
 * As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
 * supported.
 */
library EnumerableMapUpgradeable {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Map type with
    // bytes32 keys and values.
    // The Map implementation uses private functions, and user-facing
    // implementations (such as Uint256ToAddressMap) are just wrappers around
    // the underlying Map.
    // This means that we can only create new EnumerableMaps for types that fit
    // in bytes32.

    struct MapEntry {
        bytes32 _key;
        bytes32 _value;
    }

    struct Map {
        // Storage of map keys and values
        MapEntry[] _entries;

        // Position of the entry defined by a key in the `entries` array, plus 1
        // because index 0 means a key is not in the map.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
        // We read and store the key's index to prevent multiple reads from the same storage slot
        uint256 keyIndex = map._indexes[key];

        if (keyIndex == 0) { // Equivalent to !contains(map, key)
            map._entries.push(MapEntry({ _key: key, _value: value }));
            // The entry is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            map._indexes[key] = map._entries.length;
            return true;
        } else {
            map._entries[keyIndex - 1]._value = value;
            return false;
        }
    }

    /**
     * @dev Removes a key-value pair from a map. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function _remove(Map storage map, bytes32 key) private returns (bool) {
        // We read and store the key's index to prevent multiple reads from the same storage slot
        uint256 keyIndex = map._indexes[key];

        if (keyIndex != 0) { // Equivalent to contains(map, key)
            // To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one
            // in the array, and then remove the last entry (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = keyIndex - 1;
            uint256 lastIndex = map._entries.length - 1;

            // When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            MapEntry storage lastEntry = map._entries[lastIndex];

            // Move the last entry to the index where the entry to delete is
            map._entries[toDeleteIndex] = lastEntry;
            // Update the index for the moved entry
            map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved entry was stored
            map._entries.pop();

            // Delete the index for the deleted slot
            delete map._indexes[key];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function _contains(Map storage map, bytes32 key) private view returns (bool) {
        return map._indexes[key] != 0;
    }

    /**
     * @dev Returns the number of key-value pairs in the map. O(1).
     */
    function _length(Map storage map) private view returns (uint256) {
        return map._entries.length;
    }

   /**
    * @dev Returns the key-value pair stored at position `index` in the map. O(1).
    *
    * Note that there are no guarantees on the ordering of entries inside the
    * array, and it may change when more entries are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
        require(map._entries.length > index, "EnumerableMap: index out of bounds");

        MapEntry storage entry = map._entries[index];
        return (entry._key, entry._value);
    }

    /**
     * @dev Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     */
    function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
        uint256 keyIndex = map._indexes[key];
        if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)
        return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based
    }

    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function _get(Map storage map, bytes32 key) private view returns (bytes32) {
        uint256 keyIndex = map._indexes[key];
        require(keyIndex != 0, "EnumerableMap: nonexistent key"); // Equivalent to contains(map, key)
        return map._entries[keyIndex - 1]._value; // All indexes are 1-based
    }

    /**
     * @dev Same as {_get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {_tryGet}.
     */
    function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
        uint256 keyIndex = map._indexes[key];
        require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
        return map._entries[keyIndex - 1]._value; // All indexes are 1-based
    }

    // UintToAddressMap

    struct UintToAddressMap {
        Map _inner;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
        return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
        return _remove(map._inner, bytes32(key));
    }

    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
        return _contains(map._inner, bytes32(key));
    }

    /**
     * @dev Returns the number of elements in the map. O(1).
     */
    function length(UintToAddressMap storage map) internal view returns (uint256) {
        return _length(map._inner);
    }

   /**
    * @dev Returns the element stored at position `index` in the set. O(1).
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
        (bytes32 key, bytes32 value) = _at(map._inner, index);
        return (uint256(key), address(uint160(uint256(value))));
    }

    /**
     * @dev Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     *
     * _Available since v3.4._
     */
    function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
        (bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
        return (success, address(uint160(uint256(value))));
    }

    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
        return address(uint160(uint256(_get(map._inner, bytes32(key)))));
    }

    /**
     * @dev Same as {get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryGet}.
     */
    function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
        return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
library EnumerableSetUpgradeable {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;

        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) { // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            bytes32 lastvalue = set._values[lastIndex];

            // Move the last value to the index where the value to delete is
            set._values[toDeleteIndex] = lastvalue;
            // Update the index for the moved value
            set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        require(set._values.length > index, "EnumerableSet: index out of bounds");
        return set._values[index];
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }


    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    /**
     * @dev Converts a `uint256` to its ASCII `string` representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        uint256 index = digits - 1;
        temp = value;
        while (temp != 0) {
            buffer[index--] = bytes1(uint8(48 + temp % 10));
            temp /= 10;
        }
        return string(buffer);
    }
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;
pragma experimental ABIEncoderV2;

import "../IHasSupportedAsset.sol";

interface IAssetGuard {
  struct MultiTransaction {
    address to;
    bytes txData;
  }

  function withdrawProcessing(
    address pool,
    address asset,
    uint256 withdrawPortion,
    address to
  )
    external
    returns (
      address,
      uint256,
      MultiTransaction[] memory transactions
    );

  function getBalance(address pool, address asset) external view returns (uint256 balance);

  function getDecimals(address asset) external view returns (uint256 decimals);

  function removeAssetCheck(address poolLogic, address asset) external view;
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IGuard {
  event ExchangeFrom(address fundAddress, address sourceAsset, uint256 sourceAmount, address dstAsset, uint256 time);
  event ExchangeTo(address fundAddress, address sourceAsset, address dstAsset, uint256 dstAmount, uint256 time);

  function txGuard(
    address poolManagerLogic,
    address to,
    bytes calldata data
  ) external returns (uint16 txType, bool isPublic); // TODO: eventually update `txType` to be of enum type as per ITransactionTypes
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IHasAssetInfo {
  function isValidAsset(address asset) external view returns (bool);

  function getAssetPrice(address asset) external view returns (uint256);

  function getAssetType(address asset) external view returns (uint16);

  function getMaximumSupportedAssetCount() external view returns (uint256);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IHasDaoInfo {
  function getDaoFee() external view returns (uint256, uint256);

  function daoAddress() external view returns (address);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IHasFeeInfo {
  // Manager fee
  function getMaximumFee()
    external
    view
    returns (
      uint256,
      uint256,
      uint256,
      uint256
    );

  function maximumPerformanceFeeNumeratorChange() external view returns (uint256);

  function performanceFeeNumeratorChangeDelay() external view returns (uint256);

  function getExitFee() external view returns (uint256, uint256);

  function getExitCooldown() external view returns (uint256);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IHasGuardInfo {
  // Get guard
  function getContractGuard(address extContract) external view returns (address);

  // Get asset guard
  function getAssetGuard(address extContract) external view returns (address);

  // Get mapped addresses from Governance
  function getAddress(bytes32 name) external view returns (address);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IHasOwnable {
  function owner() external view returns (address);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IHasProtocolDaoInfo {
  function owner() external view returns (address);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

pragma experimental ABIEncoderV2;

interface IHasSupportedAsset {
  struct Asset {
    address asset;
    bool isDeposit;
  }

  function getSupportedAssets() external view returns (Asset[] memory);

  function isSupportedAsset(address asset) external view returns (bool);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IManaged {
  function manager() external view returns (address);

  function trader() external view returns (address);

  function managerName() external view returns (string memory);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IPoolFactory {
  function governanceAddress() external view returns (address);

  function isPool(address pool) external view returns (bool);

  function customCooldownWhitelist(address from) external view returns (bool);

  function receiverWhitelist(address to) external view returns (bool);

  function emitPoolEvent() external;

  function emitPoolManagerEvent() external;
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IPoolLogic {
  function factory() external view returns (address);

  function poolManagerLogic() external view returns (address);

  function setPoolManagerLogic(address _poolManagerLogic) external returns (bool);

  function availableManagerFee() external view returns (uint256 fee);

  function tokenPrice() external view returns (uint256 price);

  function tokenPriceWithoutManagerFee() external view returns (uint256 price);

  function mintManagerFee() external;

  function deposit(address _asset, uint256 _amount) external returns (uint256 liquidityMinted);

  function depositFor(
    address _recipient,
    address _asset,
    uint256 _amount
  ) external returns (uint256 liquidityMinted);

  function depositForWithCustomCooldown(
    address _recipient,
    address _asset,
    uint256 _amount,
    uint256 _cooldown
  ) external returns (uint256 liquidityMinted);

  function withdraw(uint256 _fundTokenAmount) external;

  function transfer(address to, uint256 value) external returns (bool);

  function balanceOf(address owner) external view returns (uint256);

  function approve(address spender, uint256 amount) external returns (bool);

  function symbol() external view returns (string memory);

  function transferFrom(
    address from,
    address to,
    uint256 value
  ) external returns (bool);

  function getExitRemainingCooldown(address sender) external view returns (uint256 remaining);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: MIT

pragma solidity 0.7.6;

interface IPoolManagerLogic {
  function poolLogic() external view returns (address);

  function isDepositAsset(address asset) external view returns (bool);

  function validateAsset(address asset) external view returns (bool);

  function assetValue(address asset) external view returns (uint256);

  function assetValue(address asset, uint256 amount) external view returns (uint256);

  function assetBalance(address asset) external view returns (uint256 balance);

  function factory() external view returns (address);

  function setPoolLogic(address fundAddress) external returns (bool);

  function totalFundValue() external view returns (uint256);

  function isMemberAllowed(address member) external view returns (bool);

  function getFee()
    external
    view
    returns (
      uint256,
      uint256,
      uint256,
      uint256
    );

  function minDepositUSD() external view returns (uint256);
}

//
//        __  __    __  ________  _______    ______   ________
//       /  |/  |  /  |/        |/       \  /      \ /        |
//   ____$$ |$$ |  $$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |$$$$$$$$/
//  /    $$ |$$ |__$$ |$$ |__    $$ |  $$ |$$ | _$$/ $$ |__
// /$$$$$$$ |$$    $$ |$$    |   $$ |  $$ |$$ |/    |$$    |
// $$ |  $$ |$$$$$$$$ |$$$$$/    $$ |  $$ |$$ |$$$$ |$$$$$/
// $$ \__$$ |$$ |  $$ |$$ |_____ $$ |__$$ |$$ \__$$ |$$ |_____
// $$    $$ |$$ |  $$ |$$       |$$    $$/ $$    $$/ $$       |
//  $$$$$$$/ $$/   $$/ $$$$$$$$/ $$$$$$$/   $$$$$$/  $$$$$$$$/
//
// dHEDGE DAO - https://dhedge.org
//
// Copyright (c) 2021 dHEDGE DAO
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//
// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.7.6;

import "./interfaces/IManaged.sol";

import "@openzeppelin/contracts-upgradeable/math/SafeMathUpgradeable.sol";

/// @notice Role manage contract
contract Managed is IManaged {
  using SafeMathUpgradeable for uint256;

  event ManagerUpdated(address newManager, string newManagerName);

  address public override manager;
  string public override managerName;

  address[] private _memberList;
  mapping(address => uint256) private _memberPosition;

  address public override trader;

  /// @notice Initialize of the managed contract
  /// @param newManager The address of the new manager
  /// @param newManagerName The name of the new manager
  function initialize(address newManager, string memory newManagerName) internal {
    require(newManager != address(0), "Invalid manager");
    manager = newManager;
    managerName = newManagerName;
  }

  modifier onlyManager() {
    require(msg.sender == manager, "only manager");
    _;
  }

  modifier onlyManagerOrTrader() {
    require(msg.sender == manager || msg.sender == trader, "only manager or trader");
    _;
  }

  /// @notice Return boolean if the address is a member of the list
  /// @param member The address of the member
  /// @return True if the address is a member of the list, false otherwise
  function _isMemberAllowed(address member) internal view returns (bool) {
    return _memberPosition[member] != 0;
  }

  /// @notice Get a list of members
  /// @return members Array of member addresses
  function getMembers() external view returns (address[] memory members) {
    members = _memberList;
  }

  /// @notice change the manager address
  /// @param newManager The address of the new manager
  /// @param newManagerName The name of the new manager
  function changeManager(address newManager, string memory newManagerName) external onlyManager {
    require(newManager != address(0), "Invalid manager");
    manager = newManager;
    managerName = newManagerName;
    emit ManagerUpdated(newManager, newManagerName);
  }

  /// @notice add a list of members
  /// @param members Array of member addresses
  function addMembers(address[] memory members) external onlyManager {
    for (uint256 i = 0; i < members.length; i++) {
      if (_isMemberAllowed(members[i])) continue;

      _addMember(members[i]);
    }
  }

  /// @notice remove a list of members
  /// @param members Array of member addresses
  function removeMembers(address[] memory members) external onlyManager {
    for (uint256 i = 0; i < members.length; i++) {
      if (!_isMemberAllowed(members[i])) continue;

      _removeMember(members[i]);
    }
  }

  /// @notice add a member
  /// @param member The address of the member
  function addMember(address member) external onlyManager {
    if (_isMemberAllowed(member)) return;

    _addMember(member);
  }

  /// @notice remove a member
  /// @param member The address of the member
  function removeMember(address member) external onlyManager {
    if (!_isMemberAllowed(member)) return;

    _removeMember(member);
  }

  /// @notice Set the address of the trader
  /// @param newTrader The address of the new trader
  function setTrader(address newTrader) external onlyManager {
    require(newTrader != address(0), "Invalid trader");
    trader = newTrader;
  }

  /// @notice Remove the trader
  function removeTrader() external onlyManager {
    trader = address(0);
  }

  /// @notice Return the number of members
  /// @return _numberOfMembers The number of members
  function numberOfMembers() external view returns (uint256 _numberOfMembers) {
    _numberOfMembers = _memberList.length;
  }

  /// @notice Add member internal call
  /// @param member The address of the member
  function _addMember(address member) internal {
    _memberList.push(member);
    _memberPosition[member] = _memberList.length;
  }

  /// @notice Remove member internal call
  /// @param member The address of the member
  function _removeMember(address member) internal {
    uint256 length = _memberList.length;
    uint256 index = _memberPosition[member].sub(1);

    address lastMember = _memberList[length.sub(1)];

    _memberList[index] = lastMember;
    _memberPosition[lastMember] = index.add(1);
    _memberPosition[member] = 0;

    _memberList.pop();
  }
}

{
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "optimizer": {
    "enabled": true,
    "runs": 20
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"fundAddress","type":"address"},{"indexed":false,"internalType":"address","name":"manager","type":"address"},{"indexed":false,"internalType":"address","name":"asset","type":"address"},{"indexed":false,"internalType":"bool","name":"isDeposit","type":"bool"}],"name":"AssetAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"fundAddress","type":"address"},{"indexed":false,"internalType":"address","name":"manager","type":"address"},{"indexed":false,"internalType":"address","name":"asset","type":"address"}],"name":"AssetRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"performanceFeeNumerator","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"managerFeeNumerator","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"announcedFeeActivationTime","type":"uint256"}],"name":"ManagerFeeIncreaseAnnounced","type":"event"},{"anonymous":false,"inputs":[],"name":"ManagerFeeIncreaseRenounced","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"fundAddress","type":"address"},{"indexed":false,"internalType":"address","name":"manager","type":"address"},{"indexed":false,"internalType":"uint256","name":"performanceFeeNumerator","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"managerFeeNumerator","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"entryFeeNumerator","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"denominator","type":"uint256"}],"name":"ManagerFeeSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newManager","type":"address"},{"indexed":false,"internalType":"string","name":"newManagerName","type":"string"}],"name":"ManagerUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"minDepositUSD","type":"uint256"}],"name":"MinDepositUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"poolLogic","type":"address"},{"indexed":false,"internalType":"address","name":"from","type":"address"}],"name":"PoolLogicSet","type":"event"},{"inputs":[{"internalType":"address","name":"member","type":"address"}],"name":"addMember","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"members","type":"address[]"}],"name":"addMembers","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_performanceFeeNumerator","type":"uint256"},{"internalType":"uint256","name":"_managerFeeNumerator","type":"uint256"},{"internalType":"uint256","name":"_entryFeeNumerator","type":"uint256"}],"name":"announceFeeIncrease","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"announcedEntryFeeNumerator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"announcedFeeIncreaseTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"announcedManagerFeeNumerator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"announcedPerformanceFeeNumerator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"assetBalance","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"assetDecimal","outputs":[{"internalType":"uint256","name":"decimal","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"assetPosition","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"assetValue","outputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"assetValue","outputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"bool","name":"isDeposit","type":"bool"}],"internalType":"struct IHasSupportedAsset.Asset[]","name":"_addAssets","type":"tuple[]"},{"internalType":"address[]","name":"_removeAssets","type":"address[]"}],"name":"changeAssets","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newManager","type":"address"},{"internalType":"string","name":"newManagerName","type":"string"}],"name":"changeManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"commitFeeIncrease","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"entryFeeNumerator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDepositAssets","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getFeeIncreaseInfo","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getFundComposition","outputs":[{"components":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"bool","name":"isDeposit","type":"bool"}],"internalType":"struct IHasSupportedAsset.Asset[]","name":"assets","type":"tuple[]"},{"internalType":"uint256[]","name":"balances","type":"uint256[]"},{"internalType":"uint256[]","name":"rates","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getMaximumFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getMaximumPerformanceFeeChange","outputs":[{"internalType":"uint256","name":"change","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getMembers","outputs":[{"internalType":"address[]","name":"members","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getSupportedAssets","outputs":[{"components":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"bool","name":"isDeposit","type":"bool"}],"internalType":"struct IHasSupportedAsset.Asset[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_factory","type":"address"},{"internalType":"address","name":"_manager","type":"address"},{"internalType":"string","name":"_managerName","type":"string"},{"internalType":"address","name":"_poolLogic","type":"address"},{"internalType":"uint256","name":"_performanceFeeNumerator","type":"uint256"},{"internalType":"uint256","name":"_managerFeeNumerator","type":"uint256"},{"components":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"bool","name":"isDeposit","type":"bool"}],"internalType":"struct IHasSupportedAsset.Asset[]","name":"_supportedAssets","type":"tuple[]"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"isDepositAsset","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"member","type":"address"}],"name":"isMemberAllowed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"member","type":"address"}],"name":"isNftMemberAllowed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"isSupportedAsset","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"manager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"managerFeeNumerator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"managerName","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minDepositUSD","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nftMembershipCollectionAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"numberOfMembers","outputs":[{"internalType":"uint256","name":"_numberOfMembers","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"performanceFeeNumerator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolLogic","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"member","type":"address"}],"name":"removeMember","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"members","type":"address[]"}],"name":"removeMembers","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"removeTrader","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceFeeIncrease","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_performanceFeeNumerator","type":"uint256"},{"internalType":"uint256","name":"_managerFeeNumerator","type":"uint256"},{"internalType":"uint256","name":"_entryFeeNumerator","type":"uint256"}],"name":"setFeeNumerator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_minDepositUSD","type":"uint256"}],"name":"setMinDepositUSD","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newNftMembershipCollectionAddress","type":"address"}],"name":"setNftMembershipCollectionAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_poolLogic","type":"address"}],"name":"setPoolLogic","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newTrader","type":"address"}],"name":"setTrader","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"supportedAssets","outputs":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"bool","name":"isDeposit","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalFundValue","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"trader","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"validateAsset","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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