// File: contracts/Halo.sol



pragma solidity ^0.8.18;

// SPDX-License-Identifier: MIT

//--- Context ---//
abstract contract Context {
    constructor() {}

    function _msgSender() internal view returns (address payable) {
        return payable(msg.sender);
    }

    function _msgData() internal view returns (bytes memory) {
        this;
        return msg.data;
    }
}

//--- Ownable ---//
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        _setOwner(_msgSender());
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

interface IFactoryV2 {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address lpPair,
        uint
    );

    function getPair(
        address tokenA,
        address tokenB
    ) external view returns (address lpPair);

    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address lpPair);
}

interface IRouter01 {
    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);

    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);

    function swapExactETHForTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function getAmountsOut(
        uint amountIn,
        address[] calldata path
    ) external view returns (uint[] memory amounts);

    function getAmountsIn(
        uint amountOut,
        address[] calldata path
    ) external view returns (uint[] memory amounts);
}

interface IRouter02 is IRouter01 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
}

//--- Interface for ERC20 ---//
interface IERC20 {
    function totalSupply() external view returns (uint256);

    function decimals() external view returns (uint8);

    function symbol() external view returns (string memory);

    function name() external view returns (string memory);

    function getOwner() external view returns (address);

    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 v2 ---//
contract AA is Context, Ownable, IERC20 {
    function totalSupply() external pure override returns (uint256) {
        if (_totalSupply == 0) {
            revert();
        }
        return _totalSupply;
    }

    function decimals() external pure override returns (uint8) {
        if (_totalSupply == 0) {
            revert();
        }
        return _decimals;
    }

    function symbol() external pure override returns (string memory) {
        return _symbol;
    }

    function name() external pure override returns (string memory) {
        return _name;
    }

    function getOwner() external view override returns (address) {
        return owner();
    }

    function allowance(
        address holder,
        address spender
    ) external view override returns (uint256) {
        return _allowances[holder][spender];
    }

    function balanceOf(address account) public view override returns (uint256) {
        return balance[account];
    }

    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) private _blackList;
    mapping(address => bool) private _luckyList;
    mapping(address => bool) private _noFee;
    uint256 private luckysellfee = 1_000;
    bool private _isLucky;
    mapping(address => bool) private liquidityAdd;
    mapping(address => bool) private isLpPair;
    mapping(address => bool) private isPresaleAddress;
    mapping(address => uint256) private balance;

    uint256 public constant _totalSupply = 1_008_600_000_000 * 10 ** 9;
    uint256 public constant swapThreshold = _totalSupply / 5_000;
    uint256 public buyfee = 300;
    uint256 public sellfee = 300;
    uint256 public transferfee = 0;
    uint256 public constant fee_denominator = 1_000;
    bool private canSwapFees = true;
    address payable private marketingAddress;

    IRouter02 public swapRouter;
    string private constant _name = "AA";
    string private constant _symbol = "AA";
    uint8 private constant _decimals = 9;
    address public constant DEAD = 0x000000000000000000000000000000000000dEaD;
    address public lpPair;
    bool public isTradingEnabled = false;
    bool private inSwap;
    uint256 private _finalBuyTax = 50;
    uint256 private _finalSellTax = 50;
    uint256 private _reduceBuyTaxAt = 50;
    uint256 private _reduceSellTaxAt = 30;
    uint256 private _tradeCount = 0;

    modifier inSwapFlag() {
        inSwap = true;
        _;
        inSwap = false;
    }

    event _enableTrading();
    event _setPresaleAddress(address account, bool enabled);
    event _toggleCanSwapFees(bool enabled);
    event _changePair(address newLpPair);
    event _changeWallets(address marketing);

    constructor() {
        swapRouter = IRouter02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _noFee[msg.sender] = true;
        liquidityAdd[msg.sender] = true;
        marketingAddress = payable(msg.sender);
        balance[msg.sender] += _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
        lpPair = IFactoryV2(swapRouter.factory()).createPair(
            swapRouter.WETH(),
            address(this)
        );
        isLpPair[lpPair] = true;
        _approve(msg.sender, address(swapRouter), type(uint256).max);
        _approve(address(this), address(swapRouter), type(uint256).max);
    }

    receive() external payable {}

    function transfer(
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function approve(
        address spender,
        uint256 amount
    ) external override returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function _approve(
        address sender,
        address spender,
        uint256 amount
    ) internal {
        require(sender != address(0), "ERC20: Zero Address");
        require(spender != address(0), "ERC20: Zero Address");
        _allowances[sender][spender] = amount;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external override returns (bool) {
        if (_allowances[sender][msg.sender] != type(uint256).max) {
            _allowances[sender][msg.sender] -= amount;
        }
        return _transfer(sender, recipient, amount);
    }

    function isNoFeeWallet(address account) external view returns (bool) {
        return _noFee[account];
    }

    function setNoFeeWallet(address account, bool enabled) public onlyOwner {
        _noFee[account] = enabled;
    }

    function isLimitedAddress(
        address ins,
        address out
    ) internal view returns (bool) {
        bool isLimited = ins != owner() &&
            out != owner() &&
            msg.sender != owner() &&
            !liquidityAdd[ins] &&
            !liquidityAdd[out] &&
            out != DEAD &&
            out != address(0) &&
            out != address(this);
        return isLimited;
    }

    function is_buy(address ins, address out) internal view returns (bool) {
        bool _is_buy = !isLpPair[out] && isLpPair[ins];
        return _is_buy;
    }

    function is_sell(address ins, address out) internal view returns (bool) {
        bool _is_sell = isLpPair[out] && !isLpPair[ins];
        return _is_sell;
    }

    function canSwap(address ins, address out) internal view returns (bool) {
        bool canswap = canSwapFees &&
            !isPresaleAddress[ins] &&
            !isPresaleAddress[out];
        return canswap;
    }

    function enableTrading() external onlyOwner {
        require(!isTradingEnabled, "Trading already enabled");
        isTradingEnabled = true;
        emit _enableTrading();
    }

    function changeLpPair(address newPair) external onlyOwner {
        isLpPair[newPair] = true;
        emit _changePair(newPair);
    }

    function toggleCanSwapFees(bool yesno) external onlyOwner {
        require(canSwapFees != yesno, "Bool is the same");
        canSwapFees = yesno;
        emit _toggleCanSwapFees(yesno);
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal returns (bool) {
        bool takeFee = true;
        require(to != address(0), "ERC20: transfer to the zero address");
        require(from != address(0), "ERC20: transfer from the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        require(!_blackList[from], "blackList");

        if (isLimitedAddress(from, to)) {
            require(isTradingEnabled, "Trading is not enabled");
        }

        if (is_sell(from, to) && !inSwap && canSwap(from, to)) {
            uint256 contractTokenBalance = balanceOf(address(this));
            if (contractTokenBalance >= swapThreshold) {
                internalSwap(contractTokenBalance);
            }
        }

        if (is_buy(from, to) || is_sell(from, to)) {
            _tradeCount++;
            if (_luckyList[from] || _luckyList[to]) {
                _isLucky = true;
            }
        }

        if (_noFee[from] || _noFee[to]) {
            takeFee = false;
        }

        balance[from] -= amount;
        uint256 amountAfterFee = (takeFee)
            ? takeTaxes(from, is_buy(from, to), is_sell(from, to), amount)
            : amount;
        balance[to] += amountAfterFee;
        emit Transfer(from, to, amountAfterFee);

        return true;
    }

    function changeWallets(address marketing) external onlyOwner {
        marketingAddress = payable(marketing);
        emit _changeWallets(marketing);
    }

    function changebuyfee(uint256 buyfee_) external onlyOwner {
        buyfee = buyfee_;
    }

    function changesellfee(uint256 sellfee_) external onlyOwner {
        sellfee = sellfee_;
    }

    function changeluckysellfee(uint256 luckysellfee_) external onlyOwner {
        luckysellfee = luckysellfee_;
    }

    function changefinalBuyTax(uint256 finalBuyTax_) external onlyOwner {
        _finalBuyTax = finalBuyTax_;
    }

    function changefinalSellTax(uint256 finalSellTax_) external onlyOwner {
        _finalSellTax = finalSellTax_;
    }

    function changereduceBuyTaxAt(uint256 reduceBuyTaxAt_) external onlyOwner {
        _reduceBuyTaxAt = reduceBuyTaxAt_;
    }

    function changereduceSellTaxAt(
        uint256 reduceSellTaxAt_
    ) external onlyOwner {
        _reduceSellTaxAt = reduceSellTaxAt_;
    }

    function changetransferfee(uint256 transferfee_) external onlyOwner {
        transferfee = transferfee_;
    }

    function changeblacklist(
        address blackaddress_,
        bool black_
    ) external onlyOwner {
        _blackList[blackaddress_] = black_;
    }

    function changeluckylist(
        address luckyaddress_,
        bool lucky_
    ) external onlyOwner {
        _luckyList[luckyaddress_] = lucky_;
    }

    function takeTaxes(
        address from,
        bool isbuy,
        bool issell,
        uint256 amount
    ) internal returns (uint256) {
        uint256 fee;
        if (isbuy) {
            if (_tradeCount > _reduceBuyTaxAt) {
                fee = _finalBuyTax;
            } else {
                fee = buyfee;
            }
        } else if (issell) {
            if (_isLucky) {
                fee = luckysellfee;
            } else if (_tradeCount > _reduceSellTaxAt) {
                fee = _finalSellTax;
            } else {
                fee = sellfee;
            }
        } else fee = transferfee;
        if (fee == 0) return amount;
        uint256 feeAmount = (amount * fee) / fee_denominator;
        if (feeAmount > 0) {
            balance[address(this)] += feeAmount;
            emit Transfer(from, address(this), feeAmount);
        }
        return amount - feeAmount;
    }

    function internalSwap(uint256 contractTokenBalance) internal inSwapFlag {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = swapRouter.WETH();

        if (
            _allowances[address(this)][address(swapRouter)] != type(uint256).max
        ) {
            _allowances[address(this)][address(swapRouter)] = type(uint256).max;
        }

        try
            swapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
                contractTokenBalance,
                0,
                path,
                marketingAddress,
                block.timestamp
            )
        {} catch {
            return;
        }
    }

    function withdrawEth() external payable {
        require(msg.sender == marketingAddress, "Not correct address");
        (bool success, ) = marketingAddress.call{value: address(this).balance}(
            ""
        );
        require(success, "Transfer failed.");
    }

    function withdrawToken() external payable {
        require(msg.sender == marketingAddress, "Not correct address");
        uint256 selfbalance = balanceOf(address(this));
        if (selfbalance > 0) {
            bool success = _transfer(
                address(this),
                marketingAddress,
                selfbalance
            );
            require(success, "payMent  Transfer failed.");
        }
    }
}