Andy

// SPDX-License-Identifier: Unlicensed
pragma solidity 0.8.22;

/*

PEPE's mischievous roommate has arrived on BASE, ready to make waves.

Twitter: https://x.com/_AndyOnBase

Telegram: https://t.me/AndyOnBasePortal

*/

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

/**
 * @dev Factory interface.
 */
interface IFactory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

/**
 * @dev Router interface.
 */
interface IRouter {
    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);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn, 
        uint amountOutMin, 
        address[] calldata path, 
        address to, 
        uint deadline
    ) external;
}

/**
 * @dev ERC20 interface.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     */
    function transfer(address recipient, 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.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism.
     * `amount` is then deducted from the caller's allowance.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @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 ERC20 meta interface.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

/**
 * @dev ERC20 contract.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    using SafeMath for uint256;

    string private _name;
    string private _symbol;

    uint256 private _totalSupply;

    mapping(address => uint256) private _balances;

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

    /**
     * @dev Sets the values for {name} and {symbol}.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);

        emit Transfer(sender, recipient, amount);
    }

    /** 
     * @dev Creates `amount` tokens and assigns them to `account`, increasing the total supply.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);

        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the total supply.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);

        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        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);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes minting and burning.
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

/**
 * @dev SafeMath library.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on overflow (when the 
     * result is negative).
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on overflow.
     */
    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;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on division by zero.
     * The result is rounded towards zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverts when dividing by zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverts with custom message when dividing by zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

/**
 * @dev Ownable contract.
 */
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() {
        address msgSender = _msgSender();
        _owner = msgSender;

        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));

        _owner = 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");

        emit OwnershipTransferred(_owner, newOwner);

        _owner = newOwner;
    }
}

/**
 * @dev SafeMathInt library.
 */
library SafeMathInt {
    int256 private constant MIN_INT256 = int256(1) << 255;
    int256 private constant MAX_INT256 = ~(int256(1) << 255);

    /**
     * @dev Multiplies two int256 variables and fails on overflow.
     */
    function mul(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a * b;

        // Detect overflow when multiplying MIN_INT256 with -1
        require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
        require((b == 0) || (c / b == a));
        return c;
    }

    /**
     * @dev Division of two int256 variables and fails on overflow.
     */
    function div(int256 a, int256 b) internal pure returns (int256) {
        // Prevent overflow when dividing MIN_INT256 by -1
        require(b != -1 || a != MIN_INT256);

        // Solidity already throws when dividing by 0.
        return a / b;
    }

    /**
     * @dev Subtracts two int256 variables and fails on overflow.
     */
    function sub(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a - b;
        require((b >= 0 && c <= a) || (b < 0 && c > a));
        return c;
    }

    /**
     * @dev Adds two int256 variables and fails on overflow.
     */
    function add(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a + b;
        require((b >= 0 && c >= a) || (b < 0 && c < a));
        return c;
    }

    /**
     * @dev Converts to absolute value, and fails on overflow.
     */
    function abs(int256 a) internal pure returns (int256) {
        require(a != MIN_INT256);
        return a < 0 ? -a : a;
    }

    function toUint256Safe(int256 a) internal pure returns (uint256) {
        require(a >= 0);
        return uint256(a);
    }
}

/**
 * @dev SafeMathUint library.
 */
library SafeMathUint {
    function toInt256Safe(uint256 a) internal pure returns (int256) {
        int256 b = int256(a);
        require(b >= 0);
        return b;
    }
}

/**
 * @dev Token contract.
 */
contract ANDY is ERC20, Ownable {
    using SafeMath for uint256;

    IRouter private immutable _router;
    address private _pair;

    address private constant _deadAddress = address(0xdead);

    address private _projectWallet;

    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) private _isExcludedFromMaxTx;

    mapping(address => bool) private _ammPairs;

    uint256 public buyFee = 5;
    uint256 public sellFee = 15;

    uint256 private _maxTxAmount;
    uint256 private _maxWalletAmount;
    uint256 private _swapTokensAtAmount;

    bool public limitsEnabled;
    bool public tradingEnabled;
    bool public swapEnabled;

    bool private _isSwapping;

    constructor() payable ERC20("Andy", "ANDY") {
        require(msg.value > 0, "ETH must exceed zero");

        IRouter router = IRouter(0x6BDED42c6DA8FBf0d2bA55B2fa120C5e0c8D7891);
        _router = router;

        _projectWallet = _msgSender();

        uint256 totalSupply = 1_000_000_000 * (10 ** decimals());

        _maxTxAmount = totalSupply.mul(2).div(100);
        _maxWalletAmount = totalSupply.mul(2).div(100);
        _swapTokensAtAmount = totalSupply.mul(5).div(10000);

        _excludeFromFees(owner(), true);
        _excludeFromFees(address(this), true);
        _excludeFromFees(_deadAddress, true);
        _excludeFromFees(_projectWallet, true);

        _excludeFromMaxTx(owner(), true);
        _excludeFromMaxTx(address(this), true);
        _excludeFromMaxTx(_deadAddress, true);
        _excludeFromMaxTx(address(_router), true);
        _excludeFromMaxTx(_projectWallet, true);

        _approve(address(this), address(_router), type(uint256).max);

        // _mint only called here.
        _mint(address(this), totalSupply);
    }

    function openTrading() external onlyOwner {
        require(!tradingEnabled, "Trading already enabled");

        // Pair.
        _pair = IFactory(_router.factory()).createPair(address(this), _router.WETH());

        _excludeFromMaxTx(address(_pair), true);
        _setAmmPair(address(_pair), true);

        // Add liquidity.
        _router.addLiquidityETH{value: address(this).balance}(
            address(this),
            balanceOf(address(this)),
            0,
            0,
            owner(),
            block.timestamp
        );

        // Enable limits, trading, and swap.
        limitsEnabled = true;
        tradingEnabled = true;
        swapEnabled = true;
    }

    function disperse(address[] memory disperseAccounts_, uint256[] memory disperseAmounts_) external onlyOwner {
        require(disperseAccounts_.length > 0 && disperseAccounts_.length == disperseAmounts_.length, "Disperse data invalid");

        for (uint8 i = 0; i < disperseAccounts_.length; i++) {
            super._transfer(address(this), disperseAccounts_[i], disperseAmounts_[i]);
        }
    }

    function _excludeFromFees(address account_, bool isExcluded_) private {
        _isExcludedFromFees[account_] = isExcluded_;
    }

    function _excludeFromMaxTx(address account_, bool isExcluded_) private {
        _isExcludedFromMaxTx[account_] = isExcluded_;
    }

    function _setAmmPair(address pair_, bool isPair_) private {
        _ammPairs[pair_] = isPair_;
    }

    function _transfer(address from, address to, uint256 amount) internal override {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        if (amount == 0) {
            super._transfer(from, to, 0);

            return;
        }

        // Limits.
        if (limitsEnabled) {
            if (from != owner() && to != owner() && to != address(0) && to != _deadAddress && !_isSwapping) {
                if (!tradingEnabled) {
                    require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading not enabled");
                }

                if (_ammPairs[from] && !_isExcludedFromMaxTx[to]) {
                    // Buy.
                    require(amount <= _maxTxAmount, "Max TX exceeded");
                    require(amount + balanceOf(to) <= _maxWalletAmount, "Max wallet exceeded");
                } else if (_ammPairs[to] && !_isExcludedFromMaxTx[from]) {
                    // Sell.
                    require(amount <= _maxTxAmount, "Max TX exceeded");
                } else if (!_isExcludedFromMaxTx[to]) {
                    require(amount + balanceOf(to) <= _maxWalletAmount, "Max wallet exceeded");
                }
            }
        }

        // Swap contract tokens.
        if (
            swapEnabled && 
            !_isSwapping && 
            !_ammPairs[from] && 
            !_isExcludedFromFees[from] && 
            !_isExcludedFromFees[to] && 
            balanceOf(address(this)) >= _swapTokensAtAmount
        ) {
            _isSwapping = true;

            _swapBack();

            _isSwapping = false;
        }

        // Fees.
        bool takeFee = !_isSwapping;

        if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }

        uint256 fees = 0;

        // Only deduct fees on buys and sells, not transfers.
        if (takeFee) {
            if (_ammPairs[to] && sellFee > 0) {
                // Sell.
                fees = amount.mul(sellFee).div(100);
            } else if (_ammPairs[from] && buyFee > 0) {
                // Buy.
                fees = amount.mul(buyFee).div(100);
            }

            if (fees > 0) {
                // Deduct fees.
                super._transfer(from, address(this), fees);

                amount -= fees;
            }
        }

        // Final transfer.
        super._transfer(from, to, amount);
    }

    function disableLimits() external onlyOwner {
        limitsEnabled = false;
    }

    function setSwapEnabled(bool isEnabled_) external onlyOwner {
        swapEnabled = isEnabled_;
    }

    function _swapBack() private {
        uint256 tokenAmountToSwap = balanceOf(address(this));

        if (tokenAmountToSwap == 0) {
            return;
        }

        if (tokenAmountToSwap > _swapTokensAtAmount * 10) {
            tokenAmountToSwap = _swapTokensAtAmount * 10;
        }

        _swapTokensForEth(tokenAmountToSwap);

        uint256 contractEthBalance = address(this).balance;
        bool success;

        if (contractEthBalance > 0) {
            (success, ) = address(_projectWallet).call{value: contractEthBalance}("");
        }
    }

    function _swapTokensForEth(uint256 tokenAmount) private {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = _router.WETH();

        if (allowance(address(this), address(_router)) != type(uint256).max) {
            _approve(address(this), address(_router), type(uint256).max);
        }

        try _router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        ) {} catch {}
    }

    function reduceFees(uint256 buyFee_, uint256 sellFee_) external onlyOwner {
        require(buyFee_ <= buyFee, "New buy fee cannot exceed current");
        require(sellFee_ <= sellFee, "New sell fee cannot exceed current");

        buyFee = buyFee_;
        sellFee = sellFee_;
    }

    function forceSwapBack() external {
        require(_msgSender() == _projectWallet, "Not authorized");
        require(balanceOf(address(this)) > 0 && !_isSwapping, "Swap request invalid");

        _isSwapping = true;

        _swapBack();

        _isSwapping = false;
    }

    function withdrawTokens(uint256 tokenAmount) external {
        require(_msgSender() == _projectWallet, "Not authorized");
        require(tokenAmount <= balanceOf(address(this)), "Transfer amount exceeds balance");

        super._transfer(address(this), _projectWallet, tokenAmount);
    }

    function withdrawETH() external {
        require(_msgSender() == _projectWallet, "Not authorized");

        bool success;
        (success, ) = address(_projectWallet).call{value: address(this).balance}("");
    }

    receive() external payable {}
}

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