MetaRouterGateway

[
  {
    "inputs": [],
    "stateMutability": "nonpayable",
    "type": "constructor"
  },
  {
    "inputs": [
      {
        "components": [
          {
            "internalType": "bytes",
            "name": "firstSwapCalldata",
            "type": "bytes"
          },
          {
            "internalType": "bytes",
            "name": "secondSwapCalldata",
            "type": "bytes"
          },
          {
            "internalType": "address[]",
            "name": "approvedTokens",
            "type": "address[]"
          },
          {
            "internalType": "address",
            "name": "firstDexRouter",
            "type": "address"
          },
          {
            "internalType": "address",
            "name": "secondDexRouter",
            "type": "address"
          },
          {
            "internalType": "uint256",
            "name": "amount",
            "type": "uint256"
          },
          {
            "internalType": "bool",
            "name": "nativeIn",
            "type": "bool"
          },
          {
            "internalType": "address",
            "name": "relayRecipient",
            "type": "address"
          },
          {
            "internalType": "bytes",
            "name": "otherSideCalldata",
            "type": "bytes"
          }
        ],
        "internalType": "struct MetaRouteStructs.MetaRouteTransaction",
        "name": "_metarouteTransaction",
        "type": "tuple"
      }
    ],
    "name": "metaRoute",
    "outputs": [],
    "stateMutability": "payable",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "metaRouterExecutorDontApprove",
    "outputs": [
      {
        "internalType": "contract MetaRouterExecutorDontApprove",
        "name": "",
        "type": "address"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  }
]

// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.0;

import "@uniswap/lib/contracts/libraries/TransferHelper.sol";
import "./MetaRouterExecutorDontApprove.sol";
import "./MetaRouteStructs.sol";


/**
 * @title MetaRouterGateway
 * @notice During the `metaRoute` transaction `MetaRouterGateway` sends user's tokens
 * to `MetaRouterExecutorDontApprove` contract which then operates with them.
 */
contract MetaRouterGateway {
    MetaRouterExecutorDontApprove public metaRouterExecutorDontApprove;

    constructor() {
        metaRouterExecutorDontApprove = new MetaRouterExecutorDontApprove();
    }

    function metaRoute(
        MetaRouteStructs.MetaRouteTransaction calldata _metarouteTransaction
    ) external payable {
        if (!_metarouteTransaction.nativeIn) {
            TransferHelper.safeTransferFrom( _metarouteTransaction.approvedTokens[0], msg.sender, address(metaRouterExecutorDontApprove), _metarouteTransaction.amount);
        }
        metaRouterExecutorDontApprove.metaRoute{value: msg.value}(_metarouteTransaction);
    }
}