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

    string private _name = "Meme Games";
    string private _symbol = "MGAMES";
    uint8 private _decimals = 18;

    mapping(address => uint256) internal _reflectionBalance;
    mapping(address => uint256) internal _tokenBalance;
    mapping(address => mapping(address => uint256)) internal _allowances;

    uint256 private constant MAX = ~uint256(0);
    uint256 internal _tokenTotal = 100_000_000e18;
    uint256 internal _reflectionTotal = (MAX - (MAX % _tokenTotal));

    mapping(address => bool) isTaxless;
    mapping(address => bool) internal _isExcluded;
    address[] internal _excluded;

     
    uint256 public _feeDecimal = 2; // do not change this value...
    uint256 public _taxFee = 400; // means 4%(distributed to all holders)
  
    
    uint256 public _taxFeeTotal;

    bool public isFeeActive = true; // should be true
    bool private inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;
    
    uint256 public maxTxAmount = _tokenTotal; // no limit
  
    IUniswapV2Router02 public  uniswapV2Router;
    address public  uniswapV2Pair;


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

    constructor() public {
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // for Ethereum uniswap
        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());
        uniswapV2Router = _uniswapV2Router;
      
        isTaxless[owner()] = true;
        isTaxless[address(this)] = true;

        // exlcude pair address from tax rewards
        _isExcluded[address(uniswapV2Pair)] = true;
        _excluded.push(address(uniswapV2Pair));

        _reflectionBalance[owner()] =_reflectionTotal;
        
        emit Transfer(address(0),owner(),_tokenTotal);
        
    }

    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 override view returns (uint256) {
        return _tokenTotal;
    }
  
 
    function balanceOf(address account) public override view returns (uint256) {
        if (_isExcluded[account]) return _tokenBalance[account];
        return tokenFromReflection(_reflectionBalance[account]);
    }

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

    function allowance(address owner, address spender)
        public
        override
        view
        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 virtual 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 isExcluded(address account) public view returns (bool) {
        return _isExcluded[account];
    }

    function reflectionFromToken(uint256 tokenAmount, bool deductTransferFee)
        public
        view
        returns (uint256)
    {
        require(tokenAmount <= _tokenTotal, "Amount must be less than supply");
        if (!deductTransferFee) {
            return tokenAmount.mul(_getReflectionRate());
        } else {
            return
                tokenAmount.sub(tokenAmount.mul(_taxFee).div(10** _feeDecimal + 2)).mul(
                    _getReflectionRate()
                );
        }
    }

    function tokenFromReflection(uint256 reflectionAmount)
        public
        view
        returns (uint256)
    {
        require(
            reflectionAmount <= _reflectionTotal,
            "Amount must be less than total reflections"
        );
        uint256 currentRate = _getReflectionRate();
        return reflectionAmount.div(currentRate);
    }

    function excludeAccount(address account) external onlyOwner() {
        require(
            account != address(uniswapV2Router),
            "ERC20: We can not exclude Uniswap router."
        );
        require(!_isExcluded[account], "ERC20: Account is already excluded");
        if (_reflectionBalance[account] > 0) {
            _tokenBalance[account] = tokenFromReflection(
                _reflectionBalance[account]
            );
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeAccount(address account) external onlyOwner() {
        require(_isExcluded[account], "ERC20: Account is already included");
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_excluded[i] == account) {
                _excluded[i] = _excluded[_excluded.length - 1];
                _tokenBalance[account] = 0;
                _isExcluded[account] = false;
                _excluded.pop();
                break;
            }
        }
    }

    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 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 > 0, "Transfer amount must be greater than zero");
        
        require(amount <= maxTxAmount, "Transfer Limit Exceeds");
        
      
        uint256 transferAmount = amount;
        uint256 rate = _getReflectionRate();

        if(isFeeActive && !isTaxless[_msgSender()] && !isTaxless[recipient] && !inSwapAndLiquify){
            
            transferAmount = collectFee(amount,rate);
        }
        
        //transfer reflection
        _reflectionBalance[sender] = _reflectionBalance[sender].sub(amount.mul(rate));
        
        //Buyer amount 
        _reflectionBalance[recipient] = _reflectionBalance[recipient].add(transferAmount.mul(rate));

        //if any account belongs to the excludedAccount transfer token
        if (_isExcluded[sender]) {
            _tokenBalance[sender] = _tokenBalance[sender].sub(amount);
        }
        if (_isExcluded[recipient]) {
            _tokenBalance[recipient] = _tokenBalance[recipient].add(transferAmount);
        }

        emit Transfer(sender, recipient, transferAmount);
        
    }
    
    function collectFee( uint256 amount, uint256 rate) private returns (uint256) {
        uint256 transferAmount = amount;
        
        //@dev tax fee
        if(_taxFee != 0){
            uint256 taxFee = amount.mul(_taxFee).div(10**(_feeDecimal + 2));
            transferAmount = transferAmount.sub(taxFee);
            _reflectionTotal = _reflectionTotal.sub(taxFee.mul(rate));
            _taxFeeTotal = _taxFeeTotal.add(taxFee);
        }
      
        return transferAmount;
    }

    function _getReflectionRate() private view returns (uint256) {
        uint256 reflectionSupply = _reflectionTotal;
        uint256 tokenSupply = _tokenTotal;
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (
                _reflectionBalance[_excluded[i]] > reflectionSupply ||
                _tokenBalance[_excluded[i]] > tokenSupply
            ) return _reflectionTotal.div(_tokenTotal);
            reflectionSupply = reflectionSupply.sub(
                _reflectionBalance[_excluded[i]]
            );
            tokenSupply = tokenSupply.sub(_tokenBalance[_excluded[i]]);
        }
        if (reflectionSupply < _reflectionTotal.div(_tokenTotal))
            return _reflectionTotal.div(_tokenTotal);
        return reflectionSupply.div(tokenSupply);
    }
    

    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 setPair(address pair) external onlyOwner {
        uniswapV2Pair = pair;
    }

    function setTaxless(address account, bool value) external onlyOwner {
        isTaxless[account] = value;
    }
    
    // function setSwapAndLiquifyEnabled(bool enabled) external onlyOwner {
    //     swapAndLiquifyEnabled = enabled;
    //     SwapAndLiquifyEnabledUpdated(enabled);
    // }
    
    function setFeeActive(bool value) external onlyOwner {
        isFeeActive = value;
    }
    
    function setTaxFee(uint256 fee) external onlyOwner {
        _taxFee = fee;
    }
    
 
    function setMaxTxAmount(uint256 amount) external onlyOwner {
        maxTxAmount = amount;
    }
    
    
    
  

    receive() external payable {}
}
function setFeeActive(bool value) external onlyOwner {
    isFeeActive = value;
}

// function setSwapAndLiquifyEnabled(bool enabled) external onlyOwner {
//     swapAndLiquifyEnabled = enabled;
//     SwapAndLiquifyEnabledUpdated(enabled);
// }