/**
 //SPDX-License-Identifier: UNLICENSED
 
The Visitors arrived. Their mission was the swift and total conquest of Earth. 
Although they were armed with superior intelligence and technology, The Visitors quickly met their match. 
A never-ending diet of pop culture garbage from the dumpster of humanity swiftly disarmed the invaders. 
Too lazy and mindless to fulfill their mission, The Visitors are now cursed to share GIFs and 
memes with each other until the end of time. empowering them to emerge in Web3 and beyond. 

Supply: 1000000

2/2 tax
2% max wallet


Website : https://aialien.xyz
Telegram : https://t.me/AIAlienToken

*/

pragma solidity ^0.8.4;

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;
    address private _previousOwner;
    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 AIAlien is Context, IERC20, Ownable {
    using SafeMath for uint256;
    mapping (address => uint256) private _rOwned;
    mapping (address => uint256) private _tOwned;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) public isExcludedFromFee;
    mapping (address => bool) public isExcludedFromLimit;
    mapping (address => bool) private bots;
    mapping (address => uint) private cooldown;
    uint256 private constant MAX = ~uint256(0);
    uint256 private constant _tTotal = 1_000_000 * 10**9;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));
    uint256 private _tFeeTotal;

    uint256 public swapThreshold = 100_000 * 10**9;
    
    uint256 private _reflectionFee = 0;
    uint256 private _teamFee = 2;
    address payable private _feeAddrWallet1;
    address payable private _feeAddrWallet2;
    
    string private constant _name = "AI ALien";
    string private constant _symbol = "AI";
    uint8 private constant _decimals = 9;
    
    IUniswapV2Router02 private uniswapV2Router;
    address public uniswapV2Pair;
    bool private tradingOpen;
    bool private inSwap;
    bool private swapEnabled;
    bool private cooldownEnabled;

    uint256 private _maxTxAmount = 20_000 * 10**9;
    uint256 private _maxWalletAmount = 20_000 * 10**9;

    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor (address wallet1, address wallet2) {
        _feeAddrWallet1 = payable(wallet1);
        _feeAddrWallet2 = payable(wallet2);
        _rOwned[_msgSender()] = _rTotal;

        isExcludedFromFee[owner()] = true;
        isExcludedFromFee[address(this)] = true;
        isExcludedFromFee[_feeAddrWallet1] = true;
        isExcludedFromFee[_feeAddrWallet2] = true;

        isExcludedFromLimit[owner()] = true;
        isExcludedFromLimit[address(this)] = true;
        isExcludedFromLimit[address(0xdead)] = true;
        isExcludedFromLimit[_feeAddrWallet1] = true;
        isExcludedFromLimit[_feeAddrWallet2] = true;

        emit Transfer(address(this), _msgSender(), _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 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 setCooldownEnabled(bool onoff) external onlyOwner {
        cooldownEnabled = onoff;
    }

    function tokenFromReflection(uint256 rAmount) private view returns(uint256) {
        require(rAmount <= _rTotal, "Amount must be less than total reflections");
        uint256 currentRate =  _getRate();
        return rAmount.div(currentRate);
    }

    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(balanceOf(from) >= amount, "ERC20: transfer amount exceeds balance");

        if (from != owner() && to != owner()) {

            require(!bots[from] && !bots[to]);

            if (!isExcludedFromLimit[from] || (from == uniswapV2Pair && !isExcludedFromLimit[to])) {
                require(amount <= _maxTxAmount, "Anti-whale: Transfer amount exceeds max limit");
            }
            if (!isExcludedFromLimit[to]) {
                require(balanceOf(to) + amount <= _maxWalletAmount, "Anti-whale: Wallet amount exceeds max limit");
            }

            if (from == uniswapV2Pair && to != address(uniswapV2Router) && !isExcludedFromFee[to] && cooldownEnabled) {
                // Cooldown
                require(cooldown[to] < block.timestamp);
                cooldown[to] = block.timestamp + (60 seconds);
            }

            uint256 contractTokenBalance = balanceOf(address(this));

            if (!inSwap && from != uniswapV2Pair && swapEnabled && contractTokenBalance >= swapThreshold) {
                swapTokensForEth(contractTokenBalance);
                uint256 contractETHBalance = address(this).balance;
                if(contractETHBalance > 0) {
                    sendETHToFee(address(this).balance);
                }
            }
        }
		
        _tokenTransfer(from,to,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 sendETHToFee(uint256 amount) private {
        _feeAddrWallet1.transfer(amount.div(2));
        _feeAddrWallet2.transfer(amount.div(2));
    }
    
    function openTrading() external onlyOwner() {
        require(!tradingOpen, "trading is already open");

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        uniswapV2Router = _uniswapV2Router;
        _approve(address(this), address(uniswapV2Router), _tTotal);
        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());

        isExcludedFromLimit[address(uniswapV2Router)] = true;
        isExcludedFromLimit[uniswapV2Pair] = true;

        uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);

        swapEnabled = true;
        cooldownEnabled = true;
        tradingOpen = true;

        IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
    }

    function changeMaxTxAmount(uint256 amount) public onlyOwner {
        _maxTxAmount = amount;
    }

    function changeMaxWalletAmount(uint256 amount) public onlyOwner {
        _maxWalletAmount = amount;
    }

    function changeSwapThreshold(uint256 amount) public onlyOwner {
        swapThreshold = amount;
    }

    function excludeFromFees(address account, bool excluded) public onlyOwner {
        isExcludedFromFee[account] = excluded;
    }

    function excludeFromLimits(address account, bool excluded) public onlyOwner {
        isExcludedFromLimit[account] = excluded;
    }
        
    function _tokenTransfer(address sender, address recipient, uint256 amount) private {
        _transferStandard(sender, recipient, amount);
    }

    function _transferStandard(address sender, address recipient, uint256 tAmount) private {
        (uint256 rAmount, uint256 rTransferAmount, uint256 rReflect, uint256 tTransferAmount, uint256 tReflect, uint256 tTeam) = _getValues(tAmount);
        
        _rOwned[sender] = _rOwned[sender].sub(rAmount);

        if (isExcludedFromFee[sender] || isExcludedFromFee[recipient]) {
            _rOwned[recipient] = _rOwned[recipient].add(rAmount); 

            emit Transfer(sender, recipient, tAmount);
        } else {
            _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); 
            _takeTeam(tTeam);
            _reflectFee(rReflect, tReflect);

            emit Transfer(sender, recipient, tTransferAmount);
        }
    }

    function _takeTeam(uint256 tTeam) private {
        uint256 currentRate =  _getRate();
        uint256 rTeam = tTeam.mul(currentRate);
        _rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
    }

    function _reflectFee(uint256 rFee, uint256 tFee) private {
        _rTotal = _rTotal.sub(rFee);
        _tFeeTotal = _tFeeTotal.add(tFee);
    }

    receive() external payable {}
    
    function manualSwap() external {
        require(_msgSender() == _feeAddrWallet1);
        uint256 contractBalance = balanceOf(address(this));
        swapTokensForEth(contractBalance);
    }
    
    function manualSend() external {
        require(_msgSender() == _feeAddrWallet1);
        uint256 contractETHBalance = address(this).balance;
        sendETHToFee(contractETHBalance);
    }

    function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
        (uint256 tTransferAmount, uint256 tReflect, uint256 tTeam) = _getTValues(tAmount, _reflectionFee, _teamFee);

        uint256 currentRate =  _getRate();
        (uint256 rAmount, uint256 rTransferAmount, uint256 rReflect) = _getRValues(tAmount, tReflect, tTeam, currentRate);

        return (rAmount, rTransferAmount, rReflect, tTransferAmount, tReflect, tTeam);
    }

    function _getTValues(uint256 tAmount, uint256 reflectFee, uint256 teamFee) private pure returns (uint256, uint256, uint256) {
        uint256 tReflect = tAmount.mul(reflectFee).div(100);
        uint256 tTeam = tAmount.mul(teamFee).div(100);
        uint256 tTransferAmount = tAmount.sub(tReflect).sub(tTeam);
        return (tTransferAmount, tReflect, tTeam);
    }

    function _getRValues(uint256 tAmount, uint256 tReflect, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
        uint256 rAmount = tAmount.mul(currentRate);
        uint256 rReflect = tReflect.mul(currentRate);
        uint256 rTeam = tTeam.mul(currentRate);
        uint256 rTransferAmount = rAmount.sub(rReflect).sub(rTeam);
        return (rAmount, rTransferAmount, rReflect);
    }

	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;      
        if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }
}