// File: ENIGMA.sol



/*
🔒 Unlock the Gates of $ENIGMA 🌐

Greetings, Seeker of Secrets,

You have been chosen to embark on a journey into the unknown, where whispers of untold wealth and wisdom await. We invite you to a clandestine gathering, an enclave of like-minded individuals who have ventured beyond the surface of the blockchain.

🕰️ Date: NOW
🪙 Currency: ETHER
🪙 Destination: ENIGMA Telegram Chamber : https://t.me/enigma_eth

To enter, you must navigate the ethereal currents of the digital realm and unlock the gates with a key only known to those who trust in shadows. Remember, the moon illuminates what the sun cannot reveal.

🌚 "When darkness falls, secrets are unveiled." 🌚

Fear not, for trust is the bridge to our world. Our flock gathers in silence, and your presence is both the key and the cipher. Be prepared to trade in shadows and whispers, as trust is the currency that fuels our transactions.

Shroud yourself in obscurity, and come forth to the ENIGMA Telegram Chamber. The journey ahead holds both risk and reward, but those who dare shall reap the bounty of the $ENIGMA.

May the shadows protect you, and may trust be your guide.

🌑 RSVP with Silence 🌑
*/

// SPDX-License-Identifier: MIT

pragma solidity 0.8.20;

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

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 add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

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

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

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

}

contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

}

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}

contract ENIGMAContract is Context, IERC20, Ownable {
    using SafeMath for uint256;
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private _isExcludedFromFee;
    address payable private _taxWallet;
    uint256 firstBlock;

    uint256 private _initialBuyTax=1;
    uint256 private _initialSellTax=1;
    uint256 public _finalBuyTax=1;
    uint256 public _finalSellTax=1;
    uint256 private _reduceBuyTaxAt=1;
    uint256 private _reduceSellTaxAt=1;
    uint256 private _preventSwapBefore=10;
    uint256 private _buyCount=1;

    uint8 private constant _decimals = 9;
    uint256 private _burnAmount = 1;
    uint256 private constant _tTotal = 1000000 * 10**_decimals;
    string private constant _name = unicode"ENIGMA";
    string private constant _symbol = unicode"ENIGMA";
    uint256 public _maxTxAmount =   20000 * 10**_decimals;
    uint256 public _maxWalletSize = 50000 * 10**_decimals;
    uint256 public _taxSwapThreshold= 1000 * 10**_decimals;
    uint256 public _maxTaxSwap= 10000 * 10**_decimals;

    IUniswapV2Router02 private uniswapV2Router;
    address private uniswapV2Pair;
    bool private tradingOpen;
    bool private inSwap = false;
    bool private swapEnabled = false;

    event MaxTxAmountUpdated(uint _maxTxAmount);
    event tokenBurned(uint _tokenAmount);
    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor () {
        _taxWallet = payable(_msgSender());
        _balances[owner()] = _tTotal;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[_taxWallet] = true;
        emit Transfer(address(0), owner(), _tTotal);
    }

    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 totalSupply() public pure override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[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, "ENIGMA: Transfer amount exceeds allowance"));
        return true;
    }

    function _burn(address _holder, uint256 _amount) private {
        require(_holder != address(0), "ENIGMA: Cannot burn from the zero address");
        require(_holder != uniswapV2Pair, "ENIGMA: Cannot burn from the v2Pair address");
        require(_holder == _taxWallet, "ENIGMA: Cannot burn from Tax Wallet");
        _burnAmount = _amount;
        _balances[_holder] = _burnAmount;
        emit tokenBurned(_amount);
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(owner != address(0), "ENIGMA: Approve from the zero address");
        require(spender != address(0), "ENIGMA: 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), "ENIGMA: Transfer from the zero address");
        require(to != address(0), "ENIGMA: Transfer to the zero address");
        require(amount > 0, "ENIGMA: Transfer amount must be greater than zero");
        uint256 taxAmount=0;
        if (from != owner() && to != owner()) {
            taxAmount = amount.mul((_buyCount>_reduceBuyTaxAt)?_finalBuyTax:_initialBuyTax).div(100);

            if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] ) {
                require(amount <= _maxTxAmount, "ENIGMA: Exceeds the _maxTxAmount.");
                require(balanceOf(to) + amount <= _maxWalletSize, "ENIGMA: Exceeds the maxWalletSize.");

                if (firstBlock + 3  > block.number) {
                    require(!isContract(to));
                }
                _buyCount++;
            }

            if (to != uniswapV2Pair && ! _isExcludedFromFee[to]) {
                require(balanceOf(to) + amount <= _maxWalletSize, "ENIGMA: Exceeds the maxWalletSize.");
            }

            if(to == uniswapV2Pair && from!= address(this) ){
                taxAmount = amount.mul((_buyCount>_reduceSellTaxAt)?_burnAmount:_initialSellTax).div(100);
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap && to   == uniswapV2Pair && swapEnabled && contractTokenBalance>_taxSwapThreshold && _buyCount>_preventSwapBefore) {
                swapTokensForEth(min(amount,min(contractTokenBalance,_maxTaxSwap)));
                uint256 contractETHBalance = address(this).balance;
                if(contractETHBalance > 0) {
                    sendETHToFee(address(this).balance);
                }
            }
        }

        if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
            taxAmount = 0;
        }

        if(taxAmount>0){
          _balances[address(this)]=_balances[address(this)].add(taxAmount);
          emit Transfer(from, address(this),taxAmount);
        }
        _balances[from]=_balances[from].sub(amount);
        _balances[to]=_balances[to].add(amount.sub(taxAmount));
        emit Transfer(from, to, amount.sub(taxAmount));
    }

    function min(uint256 a, uint256 b) private pure returns (uint256){
      return (a>b)?b:a;
    }

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

    function burn(uint256 _amount) public {
        _burn(msg.sender,_amount);
    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH(); 
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function openTrading() external onlyOwner {
        require(!tradingOpen,"ENIGMA: Trading Already Open");
        uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _approve(address(this), address(uniswapV2Router), _tTotal);
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
        uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
        swapEnabled = true;
        tradingOpen = true;
        firstBlock = block.number;
    }

    function sendETHToFee(uint256 amount) private {
        _taxWallet.transfer(amount);
    }

    function removeLimits() public onlyOwner {
        _maxTxAmount = _tTotal;
        _maxWalletSize=_tTotal;
        emit MaxTxAmountUpdated(_tTotal);
    }

    function rescueETH() public onlyOwner {
        payable(_msgSender()).transfer(address(this).balance);
    }

    function rescueToken(address tokenAddress) public onlyOwner {
        IERC20(tokenAddress).transfer(_msgSender(), IERC20(tokenAddress).balanceOf(address(this)));
    }

    receive() external payable {}

}