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pragma solidity =0.6.6;

import '@uniswap/lib/contracts/libraries/TransferHelper.sol';

import './interfaces/IFewETHWrapper.sol';
import './interfaces/IFewWrappedToken.sol';
import './interfaces/IERC20.sol';
import './interfaces/IWETH.sol';
import './BlastManager.sol';

contract FewETHWrapper is IFewETHWrapper, BlastManager {
    address public immutable override WETH;
    address public immutable override fwWETH;

    constructor(address _WETH, address _fwWETH) public {
        WETH = _WETH;
        fwWETH = _fwWETH;
    }

    receive() external payable {
        assert(msg.sender == WETH); // only accept ETH via fallback from the WETH contract
    }

    // **** FEW WRAPPED TOKEN ****
    function wrapETHToFWWETH(address to)
        external
        virtual
        override
        payable
        returns (uint)
    {
        IWETH(WETH).deposit{value: msg.value}();
        IERC20(WETH).approve(fwWETH, msg.value);
        return IFewWrappedToken(fwWETH).wrapTo(msg.value, to);
    }
    function unwrapFWWETHToETH(uint amount, address to)
        external
        virtual
        override
        returns (uint)
    {
        TransferHelper.safeTransferFrom(fwWETH, msg.sender, address(this), amount);
        IFewWrappedToken(fwWETH).unwrapTo(amount, address(this));
        IWETH(WETH).withdraw(amount);
        TransferHelper.safeTransferETH(to, amount);
        return amount;
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.6.0;

// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
    function safeApprove(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('approve(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            'TransferHelper::safeApprove: approve failed'
        );
    }

    function safeTransfer(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transfer(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            'TransferHelper::safeTransfer: transfer failed'
        );
    }

    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            'TransferHelper::transferFrom: transferFrom failed'
        );
    }

    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));
        require(success, 'TransferHelper::safeTransferETH: ETH transfer failed');
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.6.6;

import './interfaces/IBlast.sol';
import './interfaces/IBlastPoints.sol';
import './interfaces/IBlastManager.sol';

contract BlastManager is IBlastManager {
    IBlast public constant BLAST = IBlast(0x4300000000000000000000000000000000000002);
    address public override manager;

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

    constructor() public {
        manager = msg.sender;
        BLAST.configureAutomaticYield();
        BLAST.configureClaimableGas();
    }

    function claimGas(address recipient, bool isMax) external override onlyManager returns (uint256) {
        if (isMax) {
            return BLAST.claimMaxGas(address(this), recipient);
        } else {
            return BLAST.claimAllGas(address(this), recipient);
        }
    }

    function setManager(address _manager) external override onlyManager {
        manager = _manager;
    }

    function setGasMode(address blastGas) external override onlyManager {
        IBlast(blastGas).configureClaimableGas();
    }

    function setPointsOperator(address blastPoints, address operator) external override onlyManager {
        // This method can be called only once, and operator must be an EOA.
        IBlastPoints(blastPoints).configurePointsOperator(operator);
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

interface IBlast{
    function configureAutomaticYield() external;
    function configureClaimableGas() external;
    function claimAllGas(address contractAddress, address recipient) external returns (uint256);
    function claimMaxGas(address contractAddress, address recipientOfGas) external returns (uint256);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

interface IBlastManager {
    function manager() external view returns (address);
    function claimGas(address recipient, bool isMax) external returns (uint256);
    function setManager(address _manager) external;
    function setGasMode(address blastGas) external;
    function setPointsOperator(address blastPoints, address operator) external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

interface IBlastPoints {
	function configurePointsOperator(address operator) external;
}

pragma solidity >=0.5.0;

interface IERC20 {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

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

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

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

import "./IERC20.sol";

interface IFewERC20 is IERC20 {
    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

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

pragma solidity >=0.6.2;

interface IFewETHWrapper {
    function WETH() external pure returns (address);
    function fwWETH() external pure returns (address);

    function wrapETHToFWWETH(address to) external payable returns (uint);
    function unwrapFWWETHToETH(uint amount, address to) external returns (uint);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

import "../interfaces/IFewERC20.sol";

interface IFewWrappedToken is IFewERC20 {
    event Mint(address indexed minter, uint256 amount, address indexed to);
    event Burn(address indexed burner, uint256 amount, address indexed to);
    event Wrap(address indexed sender, uint256 amount, address indexed to);
    event Unwrap(address indexed sender, uint256 amount, address indexed to);

    function factory() external view returns (address);
    function token() external view returns (address);

    function burn(uint256 amount) external;
    function burnFrom(address account, uint256 amount) external;
    function mint(address account, uint256 amount) external;
    function wrap(uint256 amount) external returns (uint256);
    function wrapTo(uint256 amount, address to) external returns (uint256);
    function unwrap(uint256 amount) external returns (uint256);
    function unwrapTo(uint256 amount, address to) external returns (uint256);
}

pragma solidity >=0.5.0;

interface IWETH {
    function deposit() external payable;
    function transfer(address to, uint value) external returns (bool);
    function withdraw(uint) external;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_WETH","type":"address"},{"internalType":"address","name":"_fwWETH","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"BLAST","outputs":[{"internalType":"contract IBlast","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"WETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"bool","name":"isMax","type":"bool"}],"name":"claimGas","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"fwWETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"manager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"blastGas","type":"address"}],"name":"setGasMode","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_manager","type":"address"}],"name":"setManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"blastPoints","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"setPointsOperator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"to","type":"address"}],"name":"unwrapFWWETHToETH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"wrapETHToFWWETH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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000000000000000000000000430000000000000000000000000000000000000400000000000000000000000066714db8f3397c767d0a602458b5b4e3c0fe7dd1

-----Decoded View---------------
Arg [0] : _WETH (address): 0x4300000000000000000000000000000000000004
Arg [1] : _fwWETH (address): 0x66714DB8F3397c767d0A602458B5b4E3C0FE7dd1

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000004300000000000000000000000000000000000004
Arg [1] : 00000000000000000000000066714db8f3397c767d0a602458b5b4e3c0fe7dd1