Cryo Explorer Ethereum Mainnet

// SPDX-License-Identifier: NOLICENSE
pragma solidity ^0.8.0;

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
    );
}

library SafeMath {
    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);
        }
    }

    function trySub(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    function tryMul(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    function tryDiv(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    function tryMod(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

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

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

library Address {
    function isContract(address account) internal view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    function sendValue(address payable recipient, uint256 amount) internal {
        require(
            address(this).balance >= amount,
            "Address: insufficient balance"
        );

        (bool success, ) = recipient.call{value: amount}("");
        require(
            success,
            "Address: unable to send value, recipient may have reverted"
        );
    }

    function functionCall(address target, bytes memory data)
        internal
        returns (bytes memory)
    {
        return functionCall(target, data, "Address: low-level call failed");
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return
            functionCallWithValue(
                target,
                data,
                value,
                "Address: low-level call with value failed"
            );
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(
            address(this).balance >= value,
            "Address: insufficient balance for call"
        );
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(
            data
        );
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function functionStaticCall(address target, bytes memory data)
        internal
        view
        returns (bytes memory)
    {
        return
            functionStaticCall(
                target,
                data,
                "Address: low-level static call failed"
            );
    }

    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function functionDelegateCall(address target, bytes memory data)
        internal
        returns (bytes memory)
    {
        return
            functionDelegateCall(
                target,
                data,
                "Address: low-level delegate call failed"
            );
    }

    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            if (returndata.length > 0) {
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

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

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

interface IRouter {
    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 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 DevourToken is Context, IERC20, Ownable {
    using SafeMath for uint256;
    using Address for address;

    mapping(address => uint256) private _rOwned;
    mapping(address => uint256) private _tOwned;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) private _isExcludedFromMaxWallet;
    mapping(address => bool) private _isExcludedFromFee;
    mapping(address => bool) private _isExcluded;

    address[] private _excluded;

    bool public tradingEnabled;
    bool public swapEnabled;
    bool private swapping;
    bool private isSwapNLiq = false;

    IRouter public router;
    address public pair;

    uint8 private constant _decimals = 18;
    uint256 private constant MAX = ~uint256(0);

    uint256 private _tTotal = 1000000000000000 * 10**_decimals;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));

    uint256 public maxBuyAmount = _tTotal.mul(2).div(100);
    uint256 public maxSellAmount = _tTotal.mul(1).div(100);
    uint256 public swapTokensAtAmount = 5000000000000 * 10**_decimals;
    uint256 public _maxWalletSize = _tTotal.mul(2).div(100);

    address public operationsAddress =
        0xf254Ac119AcdDE9d64afC9a622c0a86bF6473ff8;

    address public marketingAddress =
        0x2988F8A65E69Ce9203B57E4a82828560c5735c1f;

    address public foundationAddress =
        0xEb2c05E949B587D7c2918C5543F567eC302eF2e7;

    address public exchangeLiquidityReserve =
        0x5A75f7c8aE75a04380eD90bBDee2D6F686af02FE;

    address public manualBurnReserve =
        0xDd4b03a752862dBdFdD8C8663eB7dEA94BcAe97C;

    address public constant deadAddress =
        0x000000000000000000000000000000000000dEaD;

    string private constant _name = "Devour Token";
    string private constant _symbol = "RESTAURANTS";

    struct feeRatesStruct {
        uint256 rfi;
        uint256 operations;
        uint256 burn;
        uint256 liquidity;
    }

    struct valuesFromGetValues {
        uint256 rAmount;
        uint256 rTransferAmount;
        uint256 rRfi;
        uint256 rOperations;
        uint256 rBurn;
        uint256 rLiquidity;
        uint256 tTransferAmount;
        uint256 tRfi;
        uint256 tOperations;
        uint256 tBurn;
        uint256 tLiquidity;
    }

    event TradingEnabled(uint256 startDate);

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

    constructor(address routerAddress) {
        IRouter _router = IRouter(routerAddress);
        address _pair = IFactory(_router.factory()).createPair(
            address(this),
            _router.WETH()
        );

        router = _router;
        pair = _pair;

        _rOwned[owner()] = _rTotal;

        _isExcluded[deadAddress] = true;
        _isExcluded[marketingAddress] = true;
        _isExcluded[foundationAddress] = true;
        _isExcluded[operationsAddress] = true;

        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[operationsAddress] = true;
        _isExcludedFromFee[deadAddress] = true;
        _isExcludedFromFee[marketingAddress] = true;
        _isExcludedFromFee[foundationAddress] = true;
        _isExcludedFromFee[manualBurnReserve] = true;
        _isExcludedFromFee[exchangeLiquidityReserve] = true;

        _isExcludedFromMaxWallet[owner()] = true;
        _isExcludedFromMaxWallet[operationsAddress] = true;
        _isExcludedFromMaxWallet[deadAddress] = true;
        _isExcludedFromMaxWallet[marketingAddress] = true;
        _isExcludedFromMaxWallet[foundationAddress] = true;
        _isExcludedFromMaxWallet[manualBurnReserve] = true;
        _isExcludedFromMaxWallet[exchangeLiquidityReserve] = true;

        emit Transfer(address(0), owner(), _tTotal);
    }

    //std ERC20:
    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;
    }

    //override ERC20:
    function totalSupply() public view override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        if (_isExcluded[account]) return _tOwned[account];
        return tokenFromReflection(_rOwned[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()].sub(
                amount,
                "ERC20: transfer amount exceeds allowance"
            )
        );
        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].sub(
                subtractedValue,
                "ERC20: decreased allowance below zero"
            )
        );
        return true;
    }

    function isExcludedFromReward(address account) public view returns (bool) {
        return _isExcluded[account];
    }

    function deliver(uint256 tAmount) public {
        address sender = _msgSender();
        require(
            !_isExcluded[sender],
            "Excluded addresses cannot call this function"
        );
        valuesFromGetValues memory s = _getValues(tAmount, true);
        _rOwned[sender] = _rOwned[sender].sub(s.rAmount);
        _rTotal = _rTotal.sub(s.rAmount);
    }

    function reflectionFromToken(uint256 tAmount, bool deductTransferRfi)
        public
        view
        returns (uint256)
    {
        require(tAmount <= _tTotal, "Amount must be less than supply");
        if (!deductTransferRfi) {
            valuesFromGetValues memory s = _getValues(tAmount, true);
            return s.rAmount;
        } else {
            valuesFromGetValues memory s = _getValues(tAmount, true);
            return s.rTransferAmount;
        }
    }

    function startTrading() external onlyOwner {
        tradingEnabled = true;
        swapEnabled = true;
        emit TradingEnabled(block.timestamp);
    }

    function tokenFromReflection(uint256 rAmount)
        public
        view
        returns (uint256)
    {
        require(
            rAmount <= _rTotal,
            "Amount must be less than total reflections"
        );
        uint256 currentRate = _getRate();
        return rAmount / currentRate;
    }

    //@dev kept original RFI naming -> "reward" as in reflection
    function excludeFromReward(address account) public onlyOwner {
        require(!_isExcluded[account], "Account is already excluded");
        if (_rOwned[account] > 0) {
            _tOwned[account] = tokenFromReflection(_rOwned[account]);
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeInReward(address account) external onlyOwner {
        require(_isExcluded[account], "Account is not excluded");
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_excluded[i] == account) {
                _excluded[i] = _excluded[_excluded.length - 1];
                _tOwned[account] = 0;
                _isExcluded[account] = false;
                _excluded.pop();
                break;
            }
        }
    }

    function excludeFromFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = true;
    }

    function includeInFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = false;
    }

    function isExcludedFromFee(address account) public view returns (bool) {
        return _isExcludedFromFee[account];
    }

    function setMaxWalletPercent(uint256 maxWallPercent) external onlyOwner {
        _maxWalletSize = _tTotal.mul(maxWallPercent).div(10**2);
    }

    function _reflectRfi(uint256 rRfi) private {
        _rTotal -= rRfi;
    }

    function _takeOperations(uint256 rOperations, uint256 tOperations) private {
        if (_isExcluded[address(this)]) {
            _tOwned[address(this)] += tOperations;
        }
        _rOwned[address(this)] += rOperations;
    }

    function _takeLiquidity(uint256 rLiquidity, uint256 tLiquidity) private {
        if (_isExcluded[address(this)]) {
            _tOwned[address(this)] += tLiquidity;
        }
        _rOwned[address(this)] += rLiquidity;
    }

    function _takeBurn(uint256 rBurn, uint256 tBurn) private {
        if (_isExcluded[deadAddress]) {
            _tOwned[deadAddress] += tBurn;
        }
        _rOwned[deadAddress] += rBurn;
    }

    function _getValues(uint256 tAmount, bool takeFee)
        private
        view
        returns (valuesFromGetValues memory to_return)
    {
        to_return = _getTValues(tAmount, takeFee);
        (
            to_return.rAmount,
            to_return.rTransferAmount,
            to_return.rRfi,
            to_return.rOperations,
            to_return.rBurn,
            to_return.rLiquidity
        ) = _getRValues(to_return, tAmount, takeFee, _getRate());
        return to_return;
    }

    function _getTValues(uint256 tAmount, bool takeFee)
        private
        pure
        returns (valuesFromGetValues memory s)
    {
        feeRatesStruct memory feeRates = feeRatesStruct({
            rfi: 30,
            operations: 40,
            burn: 20,
            liquidity: 10
        });

        if (!takeFee) {
            s.tTransferAmount = tAmount;
            return s;
        }
        s.tRfi = (tAmount * feeRates.rfi) / 1000;
        s.tOperations = (tAmount * feeRates.operations) / 1000;
        s.tBurn = (tAmount * feeRates.burn) / 1000;
        s.tLiquidity = (tAmount * feeRates.liquidity) / 1000;
        s.tTransferAmount =
            tAmount -
            s.tRfi -
            s.tOperations -
            s.tBurn -
            s.tLiquidity;

        return s;
    }

    function _getRValues(
        valuesFromGetValues memory s,
        uint256 tAmount,
        bool takeFee,
        uint256 currentRate
    )
        private
        pure
        returns (
            uint256 rAmount,
            uint256 rTransferAmount,
            uint256 rRfi,
            uint256 rOperations,
            uint256 rBurn,
            uint256 rLiquidity
        )
    {
        rAmount = tAmount * currentRate;

        if (!takeFee) {
            return (rAmount, rAmount, 0, 0, 0, 0);
        }

        rRfi = s.tRfi * currentRate;
        rOperations = s.tOperations * currentRate;
        rBurn = s.tBurn * currentRate;
        rLiquidity = s.tLiquidity * currentRate;
        rTransferAmount = rAmount - rRfi - rOperations - rBurn - rLiquidity;
        return (rAmount, rTransferAmount, rRfi, rOperations, rBurn, rLiquidity);
    }

    function _getRate() private view returns (uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply / tSupply;
    }

    function _getCurrentSupply() private view returns (uint256, uint256) {
        uint256 rSupply = _rTotal;
        uint256 tSupply = _tTotal;
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (
                _rOwned[_excluded[i]] > rSupply ||
                _tOwned[_excluded[i]] > tSupply
            ) return (_rTotal, _tTotal);
            rSupply = rSupply - _rOwned[_excluded[i]];
            tSupply = tSupply - _tOwned[_excluded[i]];
        }
        if (rSupply < _rTotal / _tTotal) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }

    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 _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");
        require(
            amount <= balanceOf(from),
            "You are trying to transfer more than your balance"
        );

        if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
            require(tradingEnabled, "Trading is not enabled yet");
        }

        if (
            from != owner() &&
            to != owner() &&
            to != address(0) &&
            to != address(0xdead) &&
            from == pair
        ) {
            require(amount <= maxBuyAmount, "you are exceeding maxBuyAmount");
            uint256 walletCurrentBalance = balanceOf(to);
            require(
                walletCurrentBalance + amount <= _maxWalletSize &&
                    !_isExcludedFromMaxWallet[from],
                "Exceeds maximum wallet token amount"
            );
        }

        if (
            from != owner() &&
            to != owner() &&
            to != address(0) &&
            to != address(0xdead) &&
            from == pair
        ) {
            require(
                amount <= maxSellAmount,
                "Amount is exceeding maxSellAmount"
            );
        }

        uint256 contractTokenBalance = balanceOf(address(this));
        bool canSwap = contractTokenBalance >= swapTokensAtAmount;
        if (!swapping && swapEnabled && canSwap && from != pair) {
            swapAndLiquify(swapTokensAtAmount);
        }

        _tokenTransfer(
            from,
            to,
            amount,
            !(_isExcludedFromFee[from] || _isExcludedFromFee[to]) &&
                !(to != pair && from != pair) &&
                !isSwapNLiq
        );
    }

    //this method is responsible for taking all fee, if takeFee is true
    function _tokenTransfer(
        address sender,
        address recipient,
        uint256 tAmount,
        bool takeFee
    ) private {
        valuesFromGetValues memory s = _getValues(tAmount, takeFee);

        if (_isExcluded[sender]) {
            //from excluded
            _tOwned[sender] = _tOwned[sender] - tAmount;
        }
        if (_isExcluded[recipient]) {
            //to excluded
            _tOwned[recipient] = _tOwned[recipient] + s.tTransferAmount;
        }

        _rOwned[sender] = _rOwned[sender] - s.rAmount;
        _rOwned[recipient] = _rOwned[recipient] + s.rTransferAmount;
        _reflectRfi(s.rRfi);
        _takeOperations(s.rOperations, s.tOperations);
        _takeLiquidity(s.rLiquidity, s.tLiquidity);
        _takeBurn(s.rBurn, s.tBurn);
        emit Transfer(sender, recipient, s.tTransferAmount);
        emit Transfer(sender, address(this), s.tLiquidity + s.tOperations);
        emit Transfer(sender, deadAddress, s.tBurn);
    }

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

        // make the swap
        router.swapExactETHForTokensSupportingFeeOnTransferTokens{
            value: amount
        }(
            0, // accept any amount of Tokens
            path,
            deadAddress, // Burn address
            block.timestamp.add(300)
        );
    }

    function swapAndLiquify(uint256 tokens) private lockTheSwap {
        isSwapNLiq = true;
        feeRatesStruct memory feeRates = feeRatesStruct({
            rfi: 30,
            operations: 40,
            burn: 20,
            liquidity: 10
        });
        // Split the contract balance into halves
        uint256 denominator = (feeRates.liquidity + feeRates.operations) * 2;
        uint256 tokensToAddLiquidityWith = (tokens * feeRates.liquidity) /
            denominator;
        uint256 toSwap = tokens - tokensToAddLiquidityWith;

        uint256 initialBalance = address(this).balance;

        swapTokensForETH(toSwap);

        uint256 deltaBalance = address(this).balance - initialBalance;
        uint256 unitBalance = deltaBalance / (denominator - feeRates.liquidity);
        uint256 ethToAddLiquidityWith = unitBalance * feeRates.liquidity;

        if (ethToAddLiquidityWith > 0) {
            // Add liquidity to uniswap
            addLiquidity(tokensToAddLiquidityWith, ethToAddLiquidityWith);
        }

        // Send ETH to operationsWallet
        uint256 operationsAmt = unitBalance * 2 * feeRates.operations;
        if (operationsAmt > 0) {
            payable(operationsAddress).transfer(operationsAmt);
        }
        isSwapNLiq = false;
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(router), tokenAmount);

        // add the liquidity
        router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            owner(),
            block.timestamp
        );
    }

    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] = router.WETH();

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

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

    function updateSwapEnabled(bool _enabled) external onlyOwner {
        swapEnabled = _enabled;
    }

    //Emergency swap unlock before ownership renoucement
    function rescueLock() external onlyOwner {
        swapping = !swapping;
    }

    //Use this in case ETH are sent to the contract by mistake
    function rescueETH(uint256 weiAmount) external onlyOwner {
        require(address(this).balance >= weiAmount, "insufficient ETH balance");
        payable(msg.sender).transfer(weiAmount);
    }

    function rescueERC20Tokens(address tokenAddress) external onlyOwner {
        IERC20(tokenAddress).transfer(
            msg.sender,
            IERC20(tokenAddress).balanceOf(address(this))
        );
    }

    /// @dev Update router address in case of uniswap migration
    function setRouterAddress(address newRouter) external onlyOwner {
        require(newRouter != address(router));
        IRouter _newRouter = IRouter(newRouter);
        address get_pair = IFactory(_newRouter.factory()).getPair(
            address(this),
            _newRouter.WETH()
        );
        if (get_pair == address(0)) {
            pair = IFactory(_newRouter.factory()).createPair(
                address(this),
                _newRouter.WETH()
            );
        } else {
            pair = get_pair;
        }
        router = _newRouter;
    }

    receive() external payable {}
}