// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// File: @openzeppelin/contracts/utils/Context.sol


// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: contracts/interfaces/IUniswapV2Router02.sol


pragma solidity ^0.8.4;

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);
}
// File: contracts/interfaces/IUniswapV2Factory.sol


pragma solidity ^0.8.4;

interface IUniswapV2Factory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);
}
// File: contracts/CoinLauncherERC20.sol


pragma solidity 0.8.23;





contract LaunchpadERC20New is IERC20, Ownable {
    string private _name = "NAME";
    string private _symbol = "SYMBOL";
    uint8 private _decimals = 18;
    uint256 private _totalSupply = 10_000_000_000e18;
    
    uint256 private _twoPercent = _totalSupply / 100 * 2;
    uint256 private _minSwap = _totalSupply / 1000;
    uint256 private _taxPercentage = 10;
    address payable _taxDestination;
    
    bool private _openTrade = false;
    bool private _inSwapAndLiquify = false;
    
    uint256 public _maxTxAmount = 2**256 - 1;
    
    mapping(address => bool) private _isExcludedWallet;
    mapping(address => uint256) private _balance;
    mapping(address => mapping(address => uint256)) private _allowances;

    IUniswapV2Router02 immutable uniswapV2Router02; // Uniswap Router
    address immutable uniswapV2Pair; // Pair address
    address immutable WETH;

    /**
     * constructor of contract
     * @param name_ name of token
     * @param symbol_ symbol of token
     * @param decimals_ decimals of token
     * @param totalSupply_ total supply
     * @param maxTxAmount_ maximum transaction token amount
     * @param uniswapV2Router02_ address of uniswapV2Router02 based on network
     */
    constructor(
        string memory name_,
        string memory symbol_,
        uint8 decimals_,
        uint256 totalSupply_,
        uint256 maxTxAmount_,
        address uniswapV2Router02_
    ) {
        _name = name_;
        _symbol = symbol_;
        _decimals = decimals_;
        _taxDestination = payable(msg.sender);
        _totalSupply = totalSupply_;

        _twoPercent = totalSupply_ / 100 * 2; // 2%
        _minSwap = totalSupply_ / 1000; // 0.001%

        _maxTxAmount = maxTxAmount_;

        uniswapV2Router02 = IUniswapV2Router02(
            uniswapV2Router02_
        );

        WETH = uniswapV2Router02.WETH();
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router02.factory()).createPair(
            address(this),
            WETH
        );
        
        _isExcludedWallet[msg.sender] = true;
        _isExcludedWallet[address(this)] = true;
        
        _balance[msg.sender] = _totalSupply;
        
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    /** 
     * 
     * PUBLIC 
     * 
     * **/
    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 _totalSupply;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balance[account];
    }

    function allowance(address owner,address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

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

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * 
     * ONLYOWNER
     * 
     */
    function setTaxDestination(address taxDestination) external onlyOwner {
        _taxDestination = payable(taxDestination);
        _isExcludedWallet[_taxDestination] = true;
        _approve(_taxDestination, address(uniswapV2Router02), 2**256 - 1);
    }

    function updateTax(uint newTaxPercentage) external onlyOwner { // Function updates the tax amount if in allowable range.
        require(newTaxPercentage <= 5, "Taxable: tax is too high"); // Throws the call if the new tax is above the maximum tax.
        require(newTaxPercentage >= 0, "Taxable: tax is too low"); // Throws the call if the new tax is below the minimum tax.
        _taxPercentage = newTaxPercentage; // Sets the tax amount integer to the new value, updating the tax amount.
    }

    function setMinSwap(uint newMinSwap) external onlyOwner {
        _minSwap = newMinSwap;
    }

    function openTrading() external onlyOwner {
        _openTrade = true;
    }

    function removeLimits() external onlyOwner {
        _maxTxAmount = _totalSupply;
    }

    /**
     * 
     * PRIVATE 
     * 
     */
    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");
        if (!_isExcludedWallet[from] && !_isExcludedWallet[to]) {
            require(_openTrade, "Trade not enabled");
            require(amount <= _maxTxAmount, "Exceed maxTxAmount");
        }

        uint256 _taxTransfer;

        if (_inSwapAndLiquify) {
            // No tax transfer
            _balance[from] -= amount;
            _balance[to] += amount;

            emit Transfer(from, to, amount);
            return;
        }

        if (from == uniswapV2Pair && !_isExcludedWallet[to]) { // From Uniswap To Receiver
            _taxTransfer = _taxPercentage;
        } else if (to == uniswapV2Pair && !_isExcludedWallet[from]) { // From Sender To Uniswap
            uint256 tokensToSwap = balanceOf(address(this));
            if (tokensToSwap > _minSwap && !_inSwapAndLiquify) {
                if (tokensToSwap > _twoPercent) {
                    tokensToSwap = _twoPercent;
                }
                _inSwapAndLiquify = true;

                address[] memory path = new address[](2);
                path[0] = address(this);
                path[1] = WETH;
                uniswapV2Router02.swapExactTokensForETHSupportingFeeOnTransferTokens(
                    tokensToSwap,
                    0,
                    path,
                    _taxDestination,
                    block.timestamp
                );

                _inSwapAndLiquify = false;
            }
            _taxTransfer = _taxPercentage;
        } else {
            _taxTransfer = 0;
        }

        // Is there tax for sender|receiver?
        if (_taxTransfer != 0) {
            // Tax transfer
            uint256 taxTokens = amount * (_taxTransfer / 100);
            uint256 transferAmount = amount - taxTokens;
            _balance[from] -= amount;
            _balance[address(this)] += taxTokens;
            _balance[to] += transferAmount;

            emit Transfer(from, address(this), taxTokens);
            emit Transfer(from, to, transferAmount);
        } else {
            // No tax transfer
            _balance[from] -= amount;
            _balance[to] += amount;
            emit Transfer(from, to, amount);
        }
    }

    /**
     * EXTERNAL PAYABLE
     */
    function addLiquidity(uint256 tokenAmount) external payable onlyOwner {
        uint256 ethAmount = msg.value;
        // Ensure the contract has received enough ETH
        require(ethAmount > 0, "ETH amount must be greater than zero");
        // Ensure the contract has received enough Token
        require(tokenAmount > 0, "Token amount must be greater than zero");
        // Ensure the contract has enough tokens
        require(balanceOf(msg.sender) >= tokenAmount, "Not enough tokens in contract");

        // Approve token transfer to cover all possible scenarios
        _approve(address(this), address(uniswapV2Router02), 2**256 - 1);
        
        // Transfer
        _transfer(msg.sender, address(this), tokenAmount);
        
        uniswapV2Router02.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            owner(),
            block.timestamp
        );
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router02), 2**256 - 1);
    }

    receive() external payable {}
}

{
  "compilationTarget": {
    "LaunchpadERC20New.sol": "LaunchpadERC20New"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}