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// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.8.12;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./interface/IERC20_USDT.sol";

contract RRLootContract is Ownable {
  uint256 public withdrawCoolDown = 1 hours;

  address public secret;

  address public usdtAddress;

  mapping(bytes => bool) private usedSignatures;

  mapping(address => uint256) public lastWithdraw;

  event Deposit(address token, uint256 amount, address sender);
  event WithdrawBatch(address[] tokens, address to, uint256[] amounts);
  event WithdrawETH(uint256 amount, address recipient, address sender);
  event WithdrawERC20(address token, uint256 amount, address recipient, address sender);

  constructor(address _signer, address _usdtAddress) {
    secret = _signer;
    usdtAddress = _usdtAddress;
  }

  function setSecret(address _secret) external onlyOwner {
    secret = _secret;
  }  

  function setUsdtAddress(address _usdtAddress) external onlyOwner {
    usdtAddress = _usdtAddress;
  }

  function depositERC20(address _token, uint256 _amount) external {
    require(_amount > 0, "depositERC20: Amount must be greater than zero");
    require(
      IERC20(_token).allowance(msg.sender, address(this)) >= _amount,
      "depositERC20: Allowance not sufficient"
    );
    require(
      IERC20(_token).balanceOf(msg.sender) >= _amount,
      "depositERC20: You don't have enough balance"
    );

    IERC20(_token).transferFrom(msg.sender, address(this), _amount);

    emit Deposit(_token, _amount, msg.sender);
  }

  function depositETH() external payable {
    require(msg.value > 0, "depositETH: Invalid Ether deposit amount");
    emit Deposit(address(0), msg.value, msg.sender);
  }

  function withdrawBatch(
    address[] memory _tokens,
    uint256[] memory _amounts,
    uint256 _timeout,
    bytes calldata _signature
  ) external {
    require(_timeout > block.timestamp, "withdrawBatch: Signature is expired");
    require(
      !usedSignatures[_signature],
      "withdrawBatch: Signature already used"
    );
    require(
      lastWithdraw[msg.sender] + withdrawCoolDown < block.timestamp,
      "withdrawBatch: Withdrawal is too soon"
    );
    require(
      _tokens.length == _amounts.length,
      "withdrawBatch: Invalid _tokens or _amounts length"
    );
    require(
      _verifyHashSignature(
        keccak256(abi.encode(msg.sender, _tokens, _amounts, _timeout)),
        _signature
      ),
      "withdrawBatch: Signature is invalid"
    );

    usedSignatures[_signature] = true;
    lastWithdraw[msg.sender] = block.timestamp;

    withdrawAllTokens(_tokens, _amounts);

    emit WithdrawBatch(_tokens, msg.sender, _amounts);
  }

  function withdrawAllTokens(
    address[] memory _tokens,
    uint256[] memory _amounts
  ) internal {
    for (uint256 i = 0; i < _tokens.length; i++) {
      address token = _tokens[i];
      uint256 tokenBalance = _amounts[i];
      if (tokenBalance > 0) {
        if (token == address(0)) {
          payable(msg.sender).transfer(tokenBalance);
        } else {
          if (token == usdtAddress) {
            IERC20_USDT(token).transfer(msg.sender, tokenBalance);
          } else {            
            IERC20(token).transfer(msg.sender, tokenBalance);
          } 
        }
      }
    }
  }

   /// EMERGENCY FUNCTIONS

  /// @notice Emergency function to withdraw ETH
  function emergencyWithdrawETH() external onlyOwner {
      uint256 contractBalance = address(this).balance;

      payable(msg.sender).transfer(contractBalance);

      emit WithdrawETH(contractBalance, msg.sender, msg.sender);
  }
  /// @notice Emergency function to withdraw ERC20 tokens
  /// @param token Address of the ERC20 token
  function emergencyWithdrawERC20(address token) external onlyOwner {
      uint256 contractBalance = IERC20(token).balanceOf(address(this));

      require(
          contractBalance > 0,
          "emergencyWithdrawERC20: No tokens to withdraw"
      );

      if (token == usdtAddress) {
        IERC20_USDT(token).transfer(msg.sender, contractBalance);
      } else {
        IERC20(token).transfer(msg.sender, contractBalance);
      }

      emit WithdrawERC20(token, contractBalance, msg.sender, msg.sender);
  }

  function _verifyHashSignature(
    bytes32 freshHash,
    bytes memory signature
  ) internal view returns (bool) {
    bytes32 hash = keccak256(
      abi.encodePacked("\x19Ethereum Signed Message:\n32", freshHash)
    );

    bytes32 r;
    bytes32 s;
    uint8 v;

    if (signature.length != 65) {
      return false;
    }
    assembly {
      r := mload(add(signature, 32))
      s := mload(add(signature, 64))
      v := byte(0, mload(add(signature, 96)))
    }

    if (v < 27) {
      v += 27;
    }

    address signer = address(0);
    if (v == 27 || v == 28) {
      // solium-disable-next-line arg-overflow
      signer = ecrecover(hash, v, r, s);
    }
    return secret == signer;
  }
}

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

interface IERC20_USDT {    
    function transferFrom(address from, address to, uint value) external;
    function transfer(address to, uint value) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

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

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

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

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

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0000000000000000000000007c8f6808778ba76841d3700cada31206c438f49d000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7

-----Decoded View---------------
Arg [0] : _signer (address): 0x7C8F6808778bA76841d3700Cada31206c438f49D
Arg [1] : _usdtAddress (address): 0xdAC17F958D2ee523a2206206994597C13D831ec7

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000007c8f6808778ba76841d3700cada31206c438f49d
Arg [1] : 000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7