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/**
 *Submitted for verification at optimistic.etherscan.io on 2025-06-16
*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// Interfaces
interface IUniswapV3Pool {
    function token0() external view returns (address);
    function token1() external view returns (address);
    function slot0() external view returns (
        uint160 sqrtPriceX96,
        int24 tick,
        uint16 observationIndex,
        uint16 cardinality,
        uint16 cardinalityNext,
        uint8 feeProtocol,
        bool unlocked
    );
}

interface IERC20 {
    function decimals() external view returns (uint8);
}

interface AggregatorV3Interface {
    function latestRoundData() external view returns (
        uint80 roundId,
        int256 answer,
        uint256 startedAt,
        uint256 updatedAt,
        uint80 answeredInRound
    );
}

interface IPriceFeed {
    // Returns the latest price of Speed token in ETH (18 decimal precision)
    function getLatestSpeedEthPrice() external view returns (uint256);
    
    // Returns the latest price of Speed token in USD (18 decimal precision)
    function getLatestSpeedUsdPrice() external view returns (uint256);
}

contract SpeedTokenPriceFeed is IPriceFeed {
    address public immutable speedWethPool;
    address public immutable weth;
    address public immutable chainlinkEthUsdFeed;
    address public immutable speedToken;

    constructor(
        address _speedWethPool, 
        address _weth, 
        address _chainlinkEthUsdFeed,
        address _speedToken
    ) {
        speedWethPool = _speedWethPool;
        weth = _weth;
        chainlinkEthUsdFeed = _chainlinkEthUsdFeed;
        speedToken = _speedToken;
    }

    /**
     * @notice Returns the price of SPEED token in ETH, scaled to 18 decimals
     * @return price The price in ETH as a uint256 (e.g., 0.001 ETH = 1 * 10^15)
     */
    function getLatestSpeedEthPrice() external view override returns (uint256) {
        // Access Uniswap V3 pool data
        IUniswapV3Pool v3Pool = IUniswapV3Pool(speedWethPool);
        address token0 = v3Pool.token0();
        address token1 = v3Pool.token1();
        (uint160 sqrtPriceX96, , , , , , ) = v3Pool.slot0();
        
        // Verify that the pool contains SPEED and WETH
        require(
            (token0 == speedToken && token1 == weth) || 
            (token0 == weth && token1 == speedToken), 
            "Pool doesn't contain SPEED and WETH"
        );
        
        // Get SPEED token decimals
        uint8 decimals = IERC20(speedToken).decimals();
        
        // Calculate SPEED price in WETH with overflow-safe steps
        uint256 priceInWeth; // Price in WETH with 18 decimals
        uint256 sqrtPriceX96Squared = uint256(sqrtPriceX96) * uint256(sqrtPriceX96);
        
        if (weth == token1) {
            // WETH is token1, SPEED is token0
            // Price in WETH = (sqrtPriceX96^2 * 10^decimals) / 2^192
            priceInWeth = (sqrtPriceX96Squared * (10 ** decimals)) / (1 << 192);
        } else {
            // WETH is token0, SPEED is token1
            // Price in WETH = (10^decimals * 2^192) / sqrtPriceX96^2
            priceInWeth = ((10 ** decimals) * (1 << 192)) / sqrtPriceX96Squared;
        }
        
        return priceInWeth;
    }
    
    /**
     * @notice Returns the price of SPEED token in USD, scaled to 18 decimals
     * @return price The price in USD as a uint256 (e.g., 2 USD = 2 * 10^18)
     */
    function getLatestSpeedUsdPrice() external view override returns (uint256) {
        // Get SPEED/ETH price
        uint256 priceInWeth = this.getLatestSpeedEthPrice();
        
        // Fetch ETH/USD price from Chainlink (8 decimals)
        AggregatorV3Interface priceFeed = AggregatorV3Interface(chainlinkEthUsdFeed);
        (, int256 ethUsdInt, , , ) = priceFeed.latestRoundData();
        require(ethUsdInt > 0, "Invalid Chainlink price");
        uint256 ethUsd = uint256(ethUsdInt); // e.g., 2000 * 10^8 = 2000 USD
        
        // Convert to USD: priceInWeth (18 decimals) * ethUsd (8 decimals) / 10^8
        uint256 priceInUsd = (priceInWeth * ethUsd) / 1e8;
        
        return priceInUsd;
    }
    
    /**
     * @notice Get ETH price in USD with 18 decimal precision
     */
    function getEthUsdPrice() external view returns (uint256) {
        AggregatorV3Interface priceFeed = AggregatorV3Interface(chainlinkEthUsdFeed);
        (, int256 ethUsdInt, , , ) = priceFeed.latestRoundData();
        require(ethUsdInt > 0, "Invalid Chainlink price");
        
        // Convert from Chainlink's 8 decimals to 18 decimals
        return uint256(ethUsdInt) * 1e10;
    }
}

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[{"inputs":[{"internalType":"address","name":"_speedWethPool","type":"address"},{"internalType":"address","name":"_weth","type":"address"},{"internalType":"address","name":"_chainlinkEthUsdFeed","type":"address"},{"internalType":"address","name":"_speedToken","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"chainlinkEthUsdFeed","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getEthUsdPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getLatestSpeedEthPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getLatestSpeedUsdPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"speedToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"speedWethPool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"weth","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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00000000000000000000000088edb5bffabcb42caaedc35787667672f37897c5000000000000000000000000420000000000000000000000000000000000000600000000000000000000000013e3ee699d1909e989722e753853ae30b17e08c5000000000000000000000000b01cf1be9568f09449382a47cd5bf58e2a9d5922

-----Decoded View---------------
Arg [0] : _speedWethPool (address): 0x88edB5BfFAbCb42CAaedc35787667672f37897c5
Arg [1] : _weth (address): 0x4200000000000000000000000000000000000006
Arg [2] : _chainlinkEthUsdFeed (address): 0x13e3Ee699D1909E989722E753853AE30b17e08c5
Arg [3] : _speedToken (address): 0xB01CF1bE9568f09449382a47Cd5bF58e2A9D5922

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 00000000000000000000000088edb5bffabcb42caaedc35787667672f37897c5
Arg [1] : 0000000000000000000000004200000000000000000000000000000000000006
Arg [2] : 00000000000000000000000013e3ee699d1909e989722e753853ae30b17e08c5
Arg [3] : 000000000000000000000000b01cf1be9568f09449382a47cd5bf58e2a9d5922

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