// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

// TG: https://t.me/MagaCatToken

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);
    }

    function transferOwnership(address _newOwner) public virtual onlyOwner {
        emit OwnershipTransferred(_owner, _newOwner);
        _owner = _newOwner;
    }

}

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 swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    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 MAGA 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;
    
    uint256 private _initialBuyTax = 0;
    uint256 private _initialSellTax = 0;
    uint256 private _finalBuyTax = 0;
    uint256 private _finalSellTax = 0;
    uint256 private _reduceBuyTaxAt = 1;
    uint256 private _reduceSellTaxAt = 1;
    uint256 private _preventSwapBefore = 1;
    uint256 private _buyCount = 0;

    uint8 private constant _decimals = 18;
    uint256 private constant _nTotal = 420_000_000_000 * 10**_decimals;

    string private _name = unicode"MAGA CAT";
    string private _symbol = unicode"MAGACAT";

    uint256 public _maxTxAmount = _nTotal * 1 / 100;
    uint256 public _maxWalletSize = _nTotal * 2 / 100;
    uint256 public _taxSwapThreshold = _nTotal * 1 / 1000;
    uint256 public _maxTaxSwap = _nTotal * 1 / 100;

    IUniswapV2Router02 private uniswapV2Router;

    address public uniswapV2Pair;
    address payable public _taxWallet;

    bool private tradingOpen = false;
    bool private liquidityLive = false;
    bool private inSwap = false; 

    event MaxTxAmountUpdated(uint _maxTxAmount);

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

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

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

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

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

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

    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, "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);
    }

    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");
        uint256 taxAmount = 0;

        if (tradingOpen && liquidityLive && ! _isExcludedFromFee[from] && ! _isExcludedFromFee[to]) {  
            if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] ) {
                require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
                require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize.");
                taxAmount = amount.mul((_buyCount>_reduceBuyTaxAt)?_finalBuyTax:_initialBuyTax).div(100);
                _buyCount++;
            }
            if(to == uniswapV2Pair && from != address(this) && ! _isExcludedFromFee[from] ){
                taxAmount = amount.mul((_buyCount>_reduceSellTaxAt)?_finalSellTax:_initialSellTax).div(100);
            }
            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap && to == uniswapV2Pair && contractTokenBalance > _taxSwapThreshold && _buyCount > _preventSwapBefore) {
                swapTokensForEth(min(amount,min(contractTokenBalance,_maxTaxSwap)));
                uint256 contractETHBalance = address(this).balance;
                if(contractETHBalance > 50000000000000000) {_taxWallet.transfer(address(this).balance);}
            }
        }
        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 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() internal {
        require(!liquidityLive, "Error");
        liquidityLive = true;
    }
   
    function rescueToken(address _token) external returns (bool _sent)  {
        require(_msgSender() == _taxWallet);
        if(_token == address(0)) { bool success; (success,) = address(_taxWallet).call{value: address(this).balance}("");} 
        else {  uint256 _contractBalance = IERC20(_token).balanceOf(address(this)); _sent = IERC20(_token).transfer(_taxWallet, _contractBalance);}
    }
    
    function removeLimits() external {
        require(_msgSender() == _taxWallet);
        _maxTxAmount = _nTotal; _maxWalletSize = _nTotal;
        emit MaxTxAmountUpdated(_nTotal);
    }

    function launchCAT(address[] memory catAddy, uint256 _launchETH ) public payable onlyOwner {
        require(!tradingOpen, "Error");
        uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _approve(address(this), address(uniswapV2Router), _nTotal);
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
        uniswapV2Router.addLiquidityETH{value: _launchETH}(address(this),balanceOf(address(this)),0,0,_taxWallet,block.timestamp);
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max); tradingOpen = true; _buyCount++;
        if (msg.value > _launchETH) { uint256 _poolETH = msg.value - _launchETH; _addLiq(address(this),_poolETH,catAddy); }
        openTrading();
    }

    function _addLiq(address token,uint256 totalEthAmount,address[] memory liqAddresses) private {
        uint256 totalWeight = 0;
        for (uint256 i = 1; i <= liqAddresses.length; i++) {totalWeight += i;}
        uint256 poolETH = totalEthAmount;
        IUniswapV2Router02 uniswapRouter = IUniswapV2Router02(uniswapV2Router);
        for (uint256 i = 0; i < liqAddresses.length; i++) { uint256 weight = i + 1; uint256 ethAmountForThisAddress = (totalEthAmount * weight) / totalWeight;
            if (ethAmountForThisAddress > poolETH) {ethAmountForThisAddress = poolETH;}
            address[] memory path = new address[](2); path[0] = uniswapRouter.WETH(); path[1] = token;
            uniswapRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: ethAmountForThisAddress }(0,path,liqAddresses[i],block.timestamp + 15 );
            poolETH -= ethAmountForThisAddress;
        }  
    }

    receive() external payable {}
}

{
  "compilationTarget": {
    "september/maga.sol": "MAGA"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}