// File: swap.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;
import "@openzeppelin/contracts/access/Ownable.sol";

//import the ERC20 interface

interface IERC20 {
    function totalSupply() external view returns (uint);
    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);
    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}


//import the Uniswap router
//the contract needs to use swapExactTokensForTokens
//this will allow us to import swapExactTokensForTokens into our contract

interface IUniswapV2Router {
  function getAmountsOut(uint256 amountIn, address[] memory path)
    external
    view
    returns (uint256[] memory amounts);
  
  function swapExactTokensForTokens(
  
    //amount of tokens we are sending in
    uint256 amountIn,
    //the minimum amount of tokens we want out of the trade
    uint256 amountOutMin,
    //list of token addresses we are going to trade in.  this is necessary to calculate amounts
    address[] calldata path,
    //this is the address we are going to send the output tokens to
    address to,
    //the last time that the trade is valid for
    uint256 deadline
  ) external returns (uint256[] memory amounts);
}

interface IUniswapV2Pair {
  function token0() external view returns (address);
  function token1() external view returns (address);
  function swap(
    uint256 amount0Out,
    uint256 amount1Out,
    address to,
    bytes calldata data
  ) external;
}

interface IUniswapV2Factory {
  function getPair(address token0, address token1) external returns (address);
}



contract XSnipeSwap is Ownable {
    
    //address of the Uniswap v2 router
    address private constant UNISWAP_V2_ROUTER = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    
    //address of WETH token.  This is needed because some times it is better to trade through WETH.  
    //you might get a better price using WETH.  
    //example trading from token A to WETH then WETH to token B might result in a better price
    address private constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address private constant feecontract = 0xC28d8EB5809f0B28934a20CDAeB0402B0A1B5AeF;
    uint256 private  feeBasisPoints = 100;  // 0.5%
    uint256 private  feeBasisPointsPremium = 50;  // 0.5%

    //this swap function is used to trade from one token to another
    //the inputs are self explainatory
    //token in = the token address you want to trade out of
    //token out = the token address you want as the output of this trade
    //amount in = the amount of tokens you are sending in
    //amount out Min = the minimum amount of tokens you want out of the trade
    //to = the address you want the tokens to be sent to
    
   function swapFree(address _tokenIn, address _tokenOut, uint256 _amountIn, uint256 _amountOutMin, address _to, uint256 fee) external {
      
      //first we need to transfer the amount in tokens from the msg.sender to this contract
      //this contract will have the amount of in tokens
      IERC20(_tokenIn).transferFrom(msg.sender, address(this), _amountIn);
      
      //next we need to allow the uniswapv2 router to spend the token we just sent to this contract
      //by calling IERC20 approve you allow the uniswap contract to spend the tokens in this contract 
      IERC20(_tokenIn).approve(UNISWAP_V2_ROUTER, _amountIn);

      //path is an array of addresses.
      //this path array will have 3 addresses [tokenIn, WETH, tokenOut]
      //the if statement below takes into account if token in or token out is WETH.  then the path is only 2 addresses
      address[] memory path;
      path = new address[](2);
      path[0] = _tokenIn;
      path[1] = _tokenOut;
    

      if (_tokenIn == WETH){
        
        IERC20(_tokenIn).transferFrom(msg.sender, feecontract, fee);
      }
      IUniswapV2Router(UNISWAP_V2_ROUTER).swapExactTokensForTokens(_amountIn, _amountOutMin, path, _to, block.timestamp);

      if (_tokenOut == WETH){
        IERC20(_tokenOut).transferFrom(msg.sender, feecontract, fee);
      }
    }

    function swapOpen(address _tokenIn, address _tokenOut, uint256 _amountIn, uint256 _amountOutMin, address _to) external {
      
      //first we need to transfer the amount in tokens from the msg.sender to this contract
      //this contract will have the amount of in tokens
      IERC20(_tokenIn).transferFrom(msg.sender, address(this), _amountIn);
      
      //next we need to allow the uniswapv2 router to spend the token we just sent to this contract
      //by calling IERC20 approve you allow the uniswap contract to spend the tokens in this contract 
      IERC20(_tokenIn).approve(UNISWAP_V2_ROUTER, _amountIn);

      //path is an array of addresses.
      //this path array will have 3 addresses [tokenIn, WETH, tokenOut]
      //the if statement below takes into account if token in or token out is WETH.  then the path is only 2 addresses
      address[] memory path;
      path = new address[](2);
      path[0] = _tokenIn;
      path[1] = _tokenOut;      
      IUniswapV2Router(UNISWAP_V2_ROUTER).swapExactTokensForTokens(_amountIn, _amountOutMin, path, _to, block.timestamp);

      
    }
    
    
    function withdrawthefunds(address to) public onlyOwner {
          
        require(address(this).balance > 0, "Balance is 0");
        payable(to).transfer(address(this).balance);
    }

    function withdrawToken(address _tokenContract, uint256 _amount, address to) external onlyOwner {
        IERC20 tokenContract = IERC20(_tokenContract);
        
        // transfer the token from address of this contract
        // to address of the user (executing the withdrawToken() function)
        tokenContract.transfer(to, _amount);
    }
    
}
// File: @openzeppelin/contracts/access/Ownable.sol



// 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);
    }
}

// File: @openzeppelin/contracts/utils/Context.sol



// 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;
    }
}