// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

interface IERC20 {

    event Transfer(address indexed from, address indexed to, uint256 value);


    event Approval(address indexed owner, address indexed spender, uint256 value);


    function totalSupply() external view returns (uint256);

 
    function balanceOf(address account) external view returns (uint256);


    function transfer(address to, uint256 amount) external returns (bool);


    function allowance(address owner, address spender) external view returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);


    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

interface ISwapRouter {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
}

interface ISwapFactory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);

    function getPair(
        address tokenA,
        address tokenB
    ) external view returns (address pair);
}

abstract contract Ownable {
    address internal _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        address msgSender = msg.sender;
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == msg.sender);
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0));
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

interface ISwapPair {
    function getReserves()
        external
        view
        returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);

    function token0() external view returns (address);

    function balanceOf(address account) external view returns (uint256);

    function totalSupply() external view returns (uint256);
}

contract WMEMES is IERC20, Ownable {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    string private _name;
    string private _symbol;
    uint256 private _decimals;
    uint256 private _tTotal;

    uint256 public _buyFundFee = 1;
    uint256 public _sellFundFee = 1;
    address public fundAddress = address(0x48F25A3e2be180CEba4E7c5E4810fA019AF74363);
    mapping(address => bool) public _feeWhiteList;

    ISwapRouter public _swapRouter;
    address public currency;
    mapping(address => bool) public _swapPairList;
    uint256 public numTokensSellToFund;

    uint256 private constant MAX = ~uint256(0);
    address public _mainPair;
    bool private inSwap;
    modifier lockTheSwap() {
        inSwap = true;
        _;
        inSwap = false;
    }
    constructor() {
        _name = "WMEMES";
        _symbol = "WMEMES";
        _decimals = 18;
        _tTotal = 100000000000 * 10**_decimals;


        _swapRouter = ISwapRouter(address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D));
        currency = _swapRouter.WETH();
        address ReceiveAddress = address(0x938f8d8E64374D4CC8dC83349eD35EE0461FE3f3);

        ISwapFactory swapFactory = ISwapFactory(_swapRouter.factory());
        _mainPair = swapFactory.createPair(address(this), currency);

        IERC20(currency).approve(address(_swapRouter), MAX);

        _allowances[address(this)][address(_swapRouter)] = MAX;

        _swapPairList[_mainPair] = true;
        _feeWhiteList[fundAddress] = true;
        _feeWhiteList[ReceiveAddress] = true;
        _feeWhiteList[address(this)] = true;
        // _feeWhiteList[address(_swapRouter)] = true;
        _feeWhiteList[msg.sender] = true;

        _owner = ReceiveAddress;

        _balances[ReceiveAddress] = _tTotal;
        emit Transfer(address(0), ReceiveAddress, _tTotal);

    }

    function symbol() external view  returns (string memory) {
        return _symbol;
    }

    function name() external view  returns (string memory) {
        return _name;
    }

    function decimals() external view  returns (uint256) {
        return _decimals;
    }

    function totalSupply() public view  returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view  returns (uint256) {
        return _balances[account];
    }

    function transfer(
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function allowance(
        address owner,
        address spender
    ) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(
        address spender,
        uint256 amount
    ) public override returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
        
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(sender, recipient, amount);
        if (_allowances[sender][msg.sender] != MAX) {
            _allowances[sender][msg.sender] =
                _allowances[sender][msg.sender] -
                amount;
        }
        return true;
        
    }

    function _approve(address owner, address spender, uint256 amount) private {
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }


    function _basicTransfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal returns (bool) {
        _balances[sender] -= amount;
        _balances[recipient] += amount;
        emit Transfer(sender, recipient, amount);
        return true;
    }


    function _transfer(address from, address to, uint256 amount) private {

        require(balanceOf(from) >= amount);
        

        if (_swapPairList[from] || _swapPairList[to]) {
            if (!_feeWhiteList[from] && !_feeWhiteList[to]) {

                if (_swapPairList[to]) {
                    if (!inSwap) {
                        uint256 contractTokenBalance = balanceOf(address(this));
                        if (contractTokenBalance > 0) {
                            uint256 swapFee = _buyFundFee + _sellFundFee;
                            numTokensSellToFund = (amount * swapFee) / 5000;
                            if (numTokensSellToFund > contractTokenBalance) {
                                numTokensSellToFund = contractTokenBalance;
                            }
                            swapTokenForFund(numTokensSellToFund);
                        }
                    }
                    uint256 fundAmount = amount * _sellFundFee /100;
                    amount -= fundAmount;
                    _basicTransfer(from,address(this),fundAmount);

                }
                if (_swapPairList[from]) {
                    uint256 fundAmount = amount * _buyFundFee / 100;
                    amount -= fundAmount;
                    _basicTransfer(from,address(this),fundAmount);
                }

            }

        }
           
        _basicTransfer(from,to,amount);
    }
    event Failed_swapExactTokensForETHSupportingFeeOnTransferTokens(uint256 value);

    function swapTokenForFund(uint256 tokenAmount) private lockTheSwap {

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = currency;
        if(tokenAmount>0){
            try
                _swapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
                    tokenAmount,
                    0,
                    path,
                    fundAddress,
                    block.timestamp+150
                )
            {} catch {
                emit Failed_swapExactTokensForETHSupportingFeeOnTransferTokens(
                    tokenAmount
                );
            }
        }

    }
    function setFundAddress(address addr) public  onlyOwner {
        fundAddress = addr;
        _feeWhiteList[addr] = true;
    }
    function setBuyFundFee(uint256 rate) public  onlyOwner {

        _buyFundFee = rate;
    }
    function setSellFundFee(uint256 rate) public  onlyOwner {

        _sellFundFee = rate;
    }
    receive() external payable {}

    

}