/*

YieldAI Protocol Token : $YAI

The First Multi-Chain Yield Aggregator Powered by AI

https://x.com/YieldAIProtocol
https://www.yieldaiprotocol.xyz/index.html
https://docs.yieldaiprotocol.xyz/
https://t.me/yieldaiprotocolerc


*/



// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

interface IERC20 {
    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function transfer(
        address recipient,
        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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
}

interface IUniswapV2Factory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);
}

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    )
        external
        payable
        returns (uint amountToken, uint amountETH, uint liquidity);
}

contract YAIToken is Context, IERC20, Ownable {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) private _isExcludedFromFee;

    address public uniswapV2Pair;
    address payable public _taxWallet = payable(0x36fd98c9489FC027a3D503275D8d48f96d28b549);
    IUniswapV2Router02 public uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

    bool private tradingOpen = false;
    bool private inSwap = false;
    bool private swapEnabled = false;

    uint8 private constant _decimals = 9;

    string private constant _name = unicode"Yield AI";
    string private constant _symbol = unicode"YAI";

    uint256 private _buyTax = 4;
    uint256 private _sellTax = 4;
    uint256 private constant _tTotal = 100_000 * 10 ** _decimals;
    uint256 public _maxTxAmount = 1000 * 10 ** _decimals;
    uint256 public _maxWalletSize = 1000 * 10 ** _decimals;
    uint256 public _taxSwapThreshold = 10 * 10 ** _decimals;
    uint256 public _maxTaxSwap = 150 * 10 ** _decimals;
    uint256 public lp = 75_000 * 10 ** _decimals;

    event MaxTxAmountUpdated(uint256 _maxTxAmount);
    event TradingEnabled();

    modifier lockTheSwap() {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor() {

        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
                address(this),
                uniswapV2Router.WETH()
            );
        
        _balances[_msgSender()] = lp;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[_msgSender()] = true;
        _balances[address(this)] = _tTotal-lp;
        _isExcludedFromFee[_taxWallet] = true;
        emit Transfer(address(0), _msgSender(), _tTotal);
        emit Transfer(address(0), address(this), _tTotal-lp);
    }

    function excludeFromFees(address account, bool exempt) public onlyOwner {
        _isExcludedFromFee[account] = exempt;
        
    }

    function enableTrading() external onlyOwner {
        require(!tradingOpen, "Trading already opened");
        swapEnabled = true;
        tradingOpen = true;
        emit TradingEnabled();
    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public pure override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    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(_msgSender(), spender, amount);
        return true;
    }

    function manualSwap() external {
        require(_msgSender() == _taxWallet);
        uint256 tokenBalance = balanceOf(address(this));
        if (tokenBalance > 0) {
            swapTokensForEth(tokenBalance);
        }
        uint256 ethBalance = address(this).balance;
        if (ethBalance > 0) {
            sendETHToFee(ethBalance);
        }
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        require(
            _allowances[sender][_msgSender()] >= amount,
            "ERC20: transfer amount exceeds allowance"
        );

        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()] - amount
        );
        return true;
    }

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");

        uint256 taxAmount = 0;
        if (from != owner() && to != owner()) {
            if (
                from == uniswapV2Pair &&
                to != address(uniswapV2Router) &&
                !_isExcludedFromFee[to]
            ) {
                require(tradingOpen, "Trading not open");
                require(amount <= _maxTxAmount, "Over maxTxAmount.");
                require(
                    balanceOf(to) + amount <= _maxWalletSize,
                    "Over maxWalletSize."
                );
                taxAmount = (amount * _buyTax) / 100;
            }

            if (to == uniswapV2Pair && from != address(this)) {
                taxAmount = (amount * _sellTax) / 100;
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (
                !inSwap &&
                to == uniswapV2Pair &&
                swapEnabled &&
                contractTokenBalance > _taxSwapThreshold
            ) {
                swapTokensForEth(
                    min(amount, min(contractTokenBalance, _maxTaxSwap))
                );
                uint256 contractETHBalance = address(this).balance;
                if (contractETHBalance > 0) {
                    sendETHToFee(address(this).balance);
                }
            }
        }

        if (taxAmount > 0) {
            _balances[address(this)] = _balances[address(this)] + taxAmount;
            emit Transfer(from, address(this), taxAmount);
        }

        _balances[from] = _balances[from] - amount;
        _balances[to] = _balances[to] + (amount - taxAmount);
        emit Transfer(from, to, amount - taxAmount);
    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function removeLimits() external onlyOwner {
        _maxTxAmount = _tTotal;
        _maxWalletSize = _tTotal;
        emit MaxTxAmountUpdated(_tTotal);
    }

    function min(uint256 a, uint256 b) private pure returns (uint256) {
        return (a > b) ? b : a;
    }

    function sendETHToFee(uint256 amount) private {
        _taxWallet.transfer(amount);
    }

    function manualSend() external {
        uint256 ethBalance = address(this).balance;
        if (ethBalance > 0) {
            _taxWallet.transfer(ethBalance);
        }
    }

    receive() external payable {}
}

{
  "compilationTarget": {
    "contracts/YAITOKEN.sol": "YAIToken"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}