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

pragma solidity ^0.8.17;

import { ISignatureTransfer } from "./interfaces/ISignatureTransfer.sol";

contract PermitTransfers{

    ISignatureTransfer public immutable PERMIT2;

    constructor(address _permit) {
        PERMIT2 = ISignatureTransfer(_permit);
    }

    /// @dev Ethers are sent together to multiple destinations
    function transfersEther(
        address payable[] calldata _recipients,
        uint256[] calldata _values
    ) public payable {
        bool success;
        uint256 length = _recipients.length;
        for (uint256 i; i < length;){
            (success, ) = _recipients[i].call{value: _values[i]}("");
            require(success, "Failed to send Ether");
            unchecked{ ++i; }
        }
        uint256 balance = address(this).balance;
        if (balance > 0){
            (success, ) = payable(msg.sender).call{value: balance}("");
            require(success, "Failed to send Ether");
        }
    }

    /// @dev Multiple Tokens are forwarded together to multiple destinations
    function transfersToken(
        ISignatureTransfer.PermitBatchTransferFrom calldata _permit,
        ISignatureTransfer.SignatureTransferDetails[] calldata _details,
        bytes calldata _signature
    ) public {
        PERMIT2.permitTransferFrom(
            _permit,
            _details,
            msg.sender,
            _signature
        );
    }

    /// @dev Ethers and multiple Tokens are forwarded together to multiple destinations
    function transfersEtherAndToken(
        address payable[] calldata _etherRecipients,
        uint256[] calldata _etherValues,
        ISignatureTransfer.PermitBatchTransferFrom calldata _permit,
        ISignatureTransfer.SignatureTransferDetails[] calldata _details,
        bytes calldata _signature
    ) public payable{
        transfersEther(_etherRecipients, _etherValues);
        transfersToken(_permit, _details, _signature);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

/// @title SignatureTransfer
/// @notice Handles ERC20 token transfers through signature based actions
/// @dev Requires user's token approval on the Permit2 contract
interface ISignatureTransfer {
    /// @notice Thrown when the requested amount for a transfer is larger than the permissioned amount
    /// @param maxAmount The maximum amount a spender can request to transfer
    error InvalidAmount(uint256 maxAmount);

    /// @notice Thrown when the number of tokens permissioned to a spender does not match the number of tokens being transferred
    /// @dev If the spender does not need to transfer the number of tokens permitted, the spender can request amount 0 to be transferred
    error LengthMismatch();

    /// @notice Emits an event when the owner successfully invalidates an unordered nonce.
    event UnorderedNonceInvalidation(address indexed owner, uint256 word, uint256 mask);

    /// @notice The token and amount details for a transfer signed in the permit transfer signature
    struct TokenPermissions {
        // ERC20 token address
        address token;
        // the maximum amount that can be spent
        uint256 amount;
    }

    /// @notice The signed permit message for a single token transfer
    struct PermitTransferFrom {
        TokenPermissions permitted;
        // a unique value for every token owner's signature to prevent signature replays
        uint256 nonce;
        // deadline on the permit signature
        uint256 deadline;
    }

    /// @notice Specifies the recipient address and amount for batched transfers.
    /// @dev Recipients and amounts correspond to the index of the signed token permissions array.
    /// @dev Reverts if the requested amount is greater than the permitted signed amount.
    struct SignatureTransferDetails {
        // recipient address
        address to;
        // spender requested amount
        uint256 requestedAmount;
    }

    /// @notice Used to reconstruct the signed permit message for multiple token transfers
    /// @dev Do not need to pass in spender address as it is required that it is msg.sender
    /// @dev Note that a user still signs over a spender address
    struct PermitBatchTransferFrom {
        // the tokens and corresponding amounts permitted for a transfer
        TokenPermissions[] permitted;
        // a unique value for every token owner's signature to prevent signature replays
        uint256 nonce;
        // deadline on the permit signature
        uint256 deadline;
    }

    /// @notice A map from token owner address and a caller specified word index to a bitmap. Used to set bits in the bitmap to prevent against signature replay protection
    /// @dev Uses unordered nonces so that permit messages do not need to be spent in a certain order
    /// @dev The mapping is indexed first by the token owner, then by an index specified in the nonce
    /// @dev It returns a uint256 bitmap
    /// @dev The index, or wordPosition is capped at type(uint248).max
    function nonceBitmap(address, uint256) external view returns (uint256);

    /// @notice Transfers a token using a signed permit message
    /// @dev Reverts if the requested amount is greater than the permitted signed amount
    /// @param permit The permit data signed over by the owner
    /// @param owner The owner of the tokens to transfer
    /// @param transferDetails The spender's requested transfer details for the permitted token
    /// @param signature The signature to verify
    function permitTransferFrom(
        PermitTransferFrom memory permit,
        SignatureTransferDetails calldata transferDetails,
        address owner,
        bytes calldata signature
    ) external;

    /// @notice Transfers a token using a signed permit message
    /// @notice Includes extra data provided by the caller to verify signature over
    /// @dev The witness type string must follow EIP712 ordering of nested structs and must include the TokenPermissions type definition
    /// @dev Reverts if the requested amount is greater than the permitted signed amount
    /// @param permit The permit data signed over by the owner
    /// @param owner The owner of the tokens to transfer
    /// @param transferDetails The spender's requested transfer details for the permitted token
    /// @param witness Extra data to include when checking the user signature
    /// @param witnessTypeString The EIP-712 type definition for remaining string stub of the typehash
    /// @param signature The signature to verify
    function permitWitnessTransferFrom(
        PermitTransferFrom memory permit,
        SignatureTransferDetails calldata transferDetails,
        address owner,
        bytes32 witness,
        string calldata witnessTypeString,
        bytes calldata signature
    ) external;

    /// @notice Transfers multiple tokens using a signed permit message
    /// @param permit The permit data signed over by the owner
    /// @param owner The owner of the tokens to transfer
    /// @param transferDetails Specifies the recipient and requested amount for the token transfer
    /// @param signature The signature to verify
    function permitTransferFrom(
        PermitBatchTransferFrom memory permit,
        SignatureTransferDetails[] calldata transferDetails,
        address owner,
        bytes calldata signature
    ) external;

    /// @notice Transfers multiple tokens using a signed permit message
    /// @dev The witness type string must follow EIP712 ordering of nested structs and must include the TokenPermissions type definition
    /// @notice Includes extra data provided by the caller to verify signature over
    /// @param permit The permit data signed over by the owner
    /// @param owner The owner of the tokens to transfer
    /// @param transferDetails Specifies the recipient and requested amount for the token transfer
    /// @param witness Extra data to include when checking the user signature
    /// @param witnessTypeString The EIP-712 type definition for remaining string stub of the typehash
    /// @param signature The signature to verify
    function permitWitnessTransferFrom(
        PermitBatchTransferFrom memory permit,
        SignatureTransferDetails[] calldata transferDetails,
        address owner,
        bytes32 witness,
        string calldata witnessTypeString,
        bytes calldata signature
    ) external;

    /// @notice Invalidates the bits specified in mask for the bitmap at the word position
    /// @dev The wordPos is maxed at type(uint248).max
    /// @param wordPos A number to index the nonceBitmap at
    /// @param mask A bitmap masked against msg.sender's current bitmap at the word position
    function invalidateUnorderedNonces(uint256 wordPos, uint256 mask) external;
}

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

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[{"inputs":[{"internalType":"address","name":"_permit","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"PERMIT2","outputs":[{"internalType":"contract ISignatureTransfer","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable[]","name":"_recipients","type":"address[]"},{"internalType":"uint256[]","name":"_values","type":"uint256[]"}],"name":"transfersEther","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address payable[]","name":"_etherRecipients","type":"address[]"},{"internalType":"uint256[]","name":"_etherValues","type":"uint256[]"},{"components":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct ISignatureTransfer.TokenPermissions[]","name":"permitted","type":"tuple[]"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"internalType":"struct ISignatureTransfer.PermitBatchTransferFrom","name":"_permit","type":"tuple"},{"components":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"requestedAmount","type":"uint256"}],"internalType":"struct ISignatureTransfer.SignatureTransferDetails[]","name":"_details","type":"tuple[]"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"transfersEtherAndToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct ISignatureTransfer.TokenPermissions[]","name":"permitted","type":"tuple[]"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"internalType":"struct ISignatureTransfer.PermitBatchTransferFrom","name":"_permit","type":"tuple"},{"components":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"requestedAmount","type":"uint256"}],"internalType":"struct ISignatureTransfer.SignatureTransferDetails[]","name":"_details","type":"tuple[]"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"transfersToken","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000000000000022d473030f116ddee9f6b43ac78ba3

-----Decoded View---------------
Arg [0] : _permit (address): 0x000000000022D473030F116dDEE9F6B43aC78BA3

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000000000000022d473030f116ddee9f6b43ac78ba3