contract ShibJitsu is Context, IERC20, Ownable {
    using SafeMath for uint256;
    using Address for address;

    string private _name = "SHIBJITSU";
    string private _symbol = "SHJITSU";
    uint8 private _decimals = 9;

    mapping(address => uint256) private _rOwned;
    mapping(address => uint256) private _tOwned;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) private _isExcludedFromFee;
    mapping(address => bool) private _isExcluded;
    mapping(address => bool) private _isBlackListedBot;
    mapping(address => bool) private _isExcludedFromLimit;
    
    uint256 private constant MAX = ~uint256(0);
    uint256 private _tTotal = 1 * 10**15 * 10**9;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));
    uint256 private _tFeeTotal;

    address[] private _blackListedBots;
    address[] private _excluded;

    address payable private _marketingAddress = payable(address(0x34e9E92505c995E284C207bA8DE8fD097679f8Be));
    address payable private _devAddress = payable(address(0x34e9E92505c995E284C207bA8DE8fD097679f8Be));
    
    uint16 private _taxFee;
    uint16 private _liquidityFee;
    uint16 private _marketingFee;
    uint16 private _devFee;

    IUniswapV2Router02 public immutable uniswapV2Router;
    address public immutable uniswapV2Pair;

    bool inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;

    uint256 public _maxTxAmount = 20 * 10**12 * 10**9;   // 2% max per transaction
    uint256 public _numTokensSellToAddToLiquidity = 1 * 10**12 * 10**9;
    uint256 public _maxWalletSize = 20 * 10**12 * 10**9; // 2% max per wallet

    struct BuyFee {
        uint16 tax;
        uint16 liquidity;
        uint16 marketing;
        uint16 dev;
    }

    struct SellFee {
        uint16 tax;
        uint16 liquidity;
        uint16 marketing;
        uint16 dev;
    }

    BuyFee public buyFee;
    SellFee public sellFee;

    event botAddedToBlacklist(address account);
    event botRemovedFromBlacklist(address account);

    event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
    event SwapAndLiquifyEnabledUpdated(bool enabled);
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );

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

    constructor() {
        _rOwned[_msgSender()] = _rTotal;

        buyFee.tax = 0;
        buyFee.liquidity = 2;
        buyFee.marketing = 10;
        buyFee.dev = 0;

        sellFee.tax = 0;
        sellFee.liquidity = 2;
        sellFee.marketing = 10;
        sellFee.dev = 0;

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
        uniswapV2Router = _uniswapV2Router;

        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[_marketingAddress] = true;
        _isExcludedFromFee[_devAddress] = true;

        _isExcludedFromLimit[owner()] = true;
        _isExcludedFromLimit[address(this)] = true;
        _isExcludedFromLimit[_marketingAddress] = true;
        _isExcludedFromLimit[_devAddress] = true;

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

    function name() public view returns (string memory) {
        return _name;
    }

    function symbol() public view returns (string memory) {
        return _symbol;
    }

    function decimals() public view returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _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].add(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 tokenFromReflection(uint256 rAmount) public view returns (uint256) {
        require(rAmount <= _rTotal, "Amount must be less than total reflections");
        uint256 currentRate = _getRate();
        return rAmount.div(currentRate);
    }


    function setMarketingWallet(address payable newAddress) external onlyOwner {
        _marketingAddress = newAddress;
    }

    function setDevWallet(address payable newAddress) external onlyOwner {
        _devAddress = newAddress;
    }

    function addBotToBlacklist(address account) external onlyOwner {
        require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, "We cannot blacklist UniSwap router");
        require(!_isBlackListedBot[account], "Account is already blacklisted");
        _isBlackListedBot[account] = true;
        _blackListedBots.push(account);
    }

    function removeBotFromBlacklist(address account) external onlyOwner {
        require(_isBlackListedBot[account], "Account is not blacklisted");
        for (uint256 i = 0; i < _blackListedBots.length; i++) {
            if (_blackListedBots[i] == account) {
                _blackListedBots[i] = _blackListedBots[
                    _blackListedBots.length - 1
                ];
                _isBlackListedBot[account] = false;
                _blackListedBots.pop();
                break;
            }
        }
    }

    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 excludeFromLimit(address account) public onlyOwner {
        _isExcludedFromLimit[account] = true;
    }

    function includeInLimit(address account) public onlyOwner {
        _isExcludedFromLimit[account] = false;
    }

    function setBuyFee(uint16 tax, uint16 liquidity, uint16 marketing, uint16 dev) external onlyOwner {
        buyFee.tax = tax;
        buyFee.marketing = marketing;
        buyFee.liquidity = liquidity;
        buyFee.dev = dev;
    }

    function setSellFee(uint16 tax, uint16 liquidity, uint16 marketing, uint16 dev) external onlyOwner {
        sellFee.tax = tax;
        sellFee.marketing = marketing;
        sellFee.liquidity = liquidity;
        sellFee.dev = dev;
    }

    function setAllFees(uint16 bTax, uint16 bLiquidity, uint16 bMarketing, uint16 bDev, uint16 sTax, uint16 sLiquidity, uint16 sMarketing, uint16 sDev) external onlyOwner {
        buyFee.tax = bTax;
        buyFee.marketing = bMarketing;
        buyFee.liquidity = bLiquidity;
        buyFee.dev = bDev;

        sellFee.tax = sTax;
        sellFee.marketing = sMarketing;
        sellFee.liquidity = sLiquidity;
        sellFee.dev = sDev;
    }

    function setNumTokensSellToAddToLiquidity(uint256 numTokens) external onlyOwner {
        _numTokensSellToAddToLiquidity = numTokens;
    }

    function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner {
        _maxTxAmount = _tTotal.mul(maxTxPercent).div(10**3);
    }

    function setMaxWalletSizePercent(uint256 maxWalletSize) external onlyOwner {
        _maxWalletSize = _tTotal.mul(maxWalletSize).div(10**3);
    }

    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
        swapAndLiquifyEnabled = _enabled;
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }

    //to recieve ETH from uniswapV2Router when swapping
    receive() external payable {}

    function _reflectFee(uint256 rFee, uint256 tFee) private {
        _rTotal = _rTotal.sub(rFee);
        _tFeeTotal = _tFeeTotal.add(tFee);
    }

    function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256) {
        uint256 tFee = calculateTaxFee(tAmount);
        uint256 tLiquidity = calculateLiquidityFee(tAmount);
        uint256 tWallet = calculateMarketingFee(tAmount) + calculateDevFee(tAmount);
        uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
        tTransferAmount = tTransferAmount.sub(tWallet);
        
        return (tTransferAmount, tFee, tLiquidity, tWallet);
    }

    function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
        uint256 rAmount = tAmount.mul(currentRate);
        uint256 rFee = tFee.mul(currentRate);
        uint256 rLiquidity = tLiquidity.mul(currentRate);
        uint256 rWallet = tWallet.mul(currentRate);
        uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity).sub(rWallet);
        return (rAmount, rTransferAmount, rFee);
    }

    function _getRate() private view returns (uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply.div(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.sub(_rOwned[_excluded[i]]);
            tSupply = tSupply.sub(_tOwned[_excluded[i]]);
        }
        if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }

    function _takeLiquidity(uint256 tLiquidity) private {
        uint256 currentRate = _getRate();
        uint256 rLiquidity = tLiquidity.mul(currentRate);
        _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
        if (_isExcluded[address(this)])
            _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
    }

    function _takeWalletFee(uint256 tWallet) private {
        uint256 currentRate = _getRate();
        uint256 rWallet = tWallet.mul(currentRate);
        _rOwned[address(this)] = _rOwned[address(this)].add(rWallet);
        if (_isExcluded[address(this)])
            _tOwned[address(this)] = _tOwned[address(this)].add(tWallet);
    }

    function calculateTaxFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_taxFee).div(10**2);
    }

    function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_liquidityFee).div(10**2);
    }

    function calculateMarketingFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_marketingFee).div(10**2);
    }

    function calculateDevFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_devFee).div(10**2);
    }

    function removeAllFee() private {
        _taxFee = 0;
        _liquidityFee = 0;
        _marketingFee = 0;
        _devFee = 0;
    }

    function setBuy() private {
        _taxFee = buyFee.tax;
        _liquidityFee = buyFee.liquidity;
        _marketingFee = buyFee.marketing;
        _devFee = buyFee.dev;
    }

    function setSell() private {
        _taxFee = sellFee.tax;
        _liquidityFee = sellFee.liquidity;
        _marketingFee = sellFee.marketing;
        _devFee = sellFee.dev;
    }

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

    function isExcludedFromLimit(address account) public view returns (bool) {
        return _isExcludedFromLimit[account];
    }

    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(!_isBlackListedBot[from], "You are blacklisted");
        require(!_isBlackListedBot[msg.sender], "blacklisted");
        require(!_isBlackListedBot[tx.origin], "blacklisted");

        // is the token balance of this contract address over the min number of
        // tokens that we need to initiate a swap + liquidity lock?
        // also, don't get caught in a circular liquidity event.
        // also, don't swap & liquify if sender is uniswap pair.
        uint256 contractTokenBalance = balanceOf(address(this));

        if (contractTokenBalance >= _maxTxAmount) {
            contractTokenBalance = _maxTxAmount;
        }

        bool overMinTokenBalance = contractTokenBalance >= _numTokensSellToAddToLiquidity;

        if (
            overMinTokenBalance &&
            !inSwapAndLiquify &&
            from != uniswapV2Pair &&
            swapAndLiquifyEnabled
        ) {
            contractTokenBalance = _numTokensSellToAddToLiquidity;
            swapAndLiquify(contractTokenBalance); //add liquidity
        }

        bool takeFee = true;

        if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
            takeFee = false;
        }

        if (takeFee) {
            if (!_isExcludedFromLimit[from] && !_isExcludedFromLimit[to]) {
                require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
                if (to != uniswapV2Pair) {
                    require(amount + balanceOf(to) <= _maxWalletSize, "Recipient exceeds max wallet size.");
                }
            }
        }

        _tokenTransfer(from, to, amount, takeFee);
    }

    function swapAndLiquify(uint256 tokens) private lockTheSwap {
        // Split the contract balance into halves
        uint256 denominator = (buyFee.liquidity + sellFee.liquidity + buyFee.marketing + sellFee.marketing + buyFee.dev + sellFee.dev) * 2;
        uint256 tokensToAddLiquidityWith = (tokens * (buyFee.liquidity + sellFee.liquidity)) / denominator;
        uint256 toSwap = tokens - tokensToAddLiquidityWith;
        uint256 initialBalance = address(this).balance;

        swapTokensForEth(toSwap);

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

        if (ethToAddLiquidityWith > 0) {
            addLiquidity(tokensToAddLiquidityWith, ethToAddLiquidityWith);
        }

        uint256 marketingAmt = unitBalance * 2 * (buyFee.marketing + sellFee.marketing);
        uint256 devAmt = unitBalance * 2 * (buyFee.dev + sellFee.dev) > address(this).balance ? address(this).balance : unitBalance * 2 * (buyFee.dev + sellFee.dev);

        if (marketingAmt > 0) {
            _marketingAddress.transfer(marketingAmt);
        }

        if (devAmt > 0) {
            _devAddress.transfer(devAmt);
        }
    }

    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] = uniswapV2Router.WETH(); 

        _approve(address(this), address(uniswapV2Router), tokenAmount);

        // make the swap
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        _approve(address(this), address(uniswapV2Router), tokenAmount);

        // add the liquidity
        uniswapV2Router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            address(this),
            block.timestamp
        );
    }

    function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
        if (takeFee) {
            removeAllFee();
            if (sender == uniswapV2Pair) {
                setBuy();
            }
            if (recipient == uniswapV2Pair) {
                setSell();
            }
        }

        if (_isExcluded[sender] && !_isExcluded[recipient]) {
            _transferFromExcluded(sender, recipient, amount);
        } else if (!_isExcluded[sender] && _isExcluded[recipient]) {
            _transferToExcluded(sender, recipient, amount);
        } else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
            _transferStandard(sender, recipient, amount);
        } else if (_isExcluded[sender] && _isExcluded[recipient]) {
            _transferBothExcluded(sender, recipient, amount);
        } else {
            _transferStandard(sender, recipient, amount);
        }
        removeAllFee();
    }

    function _transferStandard(address sender, address recipient, uint256 tAmount) private {
        (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet) = _getTValues(tAmount);
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, tWallet, _getRate());

        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidity(tLiquidity);
        _takeWalletFee(tWallet);
        _reflectFee(rFee, tFee);

        emit Transfer(sender, recipient, tTransferAmount);
    }


    function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
        (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet) = _getTValues(tAmount);
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, tWallet, _getRate());

        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidity(tLiquidity);
        _takeWalletFee(tWallet);
        _reflectFee(rFee, tFee);

        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
        (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet) = _getTValues(tAmount);
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, tWallet, _getRate());

        _tOwned[sender] = _tOwned[sender].sub(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidity(tLiquidity);
        _takeWalletFee(tWallet);
        _reflectFee(rFee, tFee);

        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
        (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet) = _getTValues(tAmount);
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, tWallet, _getRate());

        _tOwned[sender] = _tOwned[sender].sub(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidity(tLiquidity);
        _takeWalletFee(tWallet);
        _reflectFee(rFee, tFee);
        
        emit Transfer(sender, recipient, tTransferAmount);
    }
}
receive() external payable {}
//to recieve ETH from uniswapV2Router when swapping