BaseBull

// SPDX-License-Identifier: MIT

pragma solidity 0.8.18;

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    function tryAdd(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    function trySub(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    function tryMul(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    function tryDiv(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    function tryMod(
        uint256 a,
        uint256 b
    ) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

interface IERC20 {
    function totalSupply() external view returns (uint256);

    function circulatingSupply() external view returns (uint256);

    function decimals() external view returns (uint8);

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

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

    function getOwner() external view returns (address);

    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
    );
}

abstract contract Ownable {
    address internal owner;

    constructor(address _owner) {
        owner = _owner;
    }

    modifier onlyOwner() {
        require(isOwner(msg.sender), "!OWNER");
        _;
    }

    function isOwner(address account) public view returns (bool) {
        return account == owner;
    }

    function transferOwnership(address payable adr) public onlyOwner {
        owner = adr;
        emit OwnershipTransferred(adr);
    }

    event OwnershipTransferred(address owner);
}

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

    function getPair(
        address tokenA,
        address tokenB
    ) external view returns (address pair);
}

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 removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountA, uint amountB);

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;

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

contract BaseBull is IERC20, Ownable {
    using SafeMath for uint256;
    string private constant _name = "BaseBull";
    string private constant _symbol = "BASEBULL";
    uint8 private constant _decimals = 18;
    uint256 private constant _totalSupply = 420_690_000_000 * (10 ** _decimals);

    uint256 private constant denominator = 10000;

    uint256 private _maxWalletTokens = (_totalSupply * 200) / denominator;
    uint256 private _maxWalletExpiry;

    mapping(address => uint256) _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) public isFeeExempt;

    bool private tradingOpen = false;

    IRouter public router;
    address public pair;

    uint256 private buyFee = 400;
    uint256 private sellFee = 400;
    uint256 private transferFee = 0;

    bool private swapEnabled = true;
    uint256 private swapbackThreshold = (_totalSupply * 100) / 100000;
    uint256 private _minTokenAmount = (_totalSupply * 10) / 100000;

    bool private swapping;
    modifier lockTheSwap() {
        swapping = true;
        _;
        swapping = false;
    }

    address private taxWallet;
    address private teamWallet;

    address internal constant DEAD = 0x000000000000000000000000000000000000dEaD;

    constructor(
        address _routerAddress,
        address _taxWallet,
        address _teamWallet
    ) Ownable(msg.sender) {
        taxWallet = _taxWallet;
        teamWallet = _teamWallet;
        IRouter _router = IRouter(_routerAddress);
        address _pair = IFactory(_router.factory()).createPair(
            address(this),
            _router.WETH()
        );
        router = _router;
        pair = _pair;

        isFeeExempt[address(this)] = true;
        isFeeExempt[teamWallet] = true;
        isFeeExempt[taxWallet] = true;
        isFeeExempt[msg.sender] = true;

        _maxWalletExpiry = block.timestamp + 14 days;

        _allowances[address(this)][address(router)] = type(uint256).max;

        uint256 _p93 = _totalSupply.div(denominator).mul(9300);

        _balances[msg.sender] = _p93;
        emit Transfer(address(0), msg.sender, _p93);

        _balances[_teamWallet] = _totalSupply - _p93;
        emit Transfer(address(0), _teamWallet, _totalSupply - _p93);
    }

    receive() external payable {}

    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 getOwner() external view override returns (address) {
        return owner;
    }

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

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

    function transfer(
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

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

    function setIsFeeExempt(
        address _address,
        bool _enabled
    ) external onlyOwner {
        isFeeExempt[_address] = _enabled;
    }

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

    function circulatingSupply() public view override returns (uint256) {
        return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(address(0)));
    }

    function preTxCheck(
        address sender,
        address recipient,
        uint256 amount
    ) internal view {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        require(
            amount > uint256(0),
            "Transfer amount must be greater than zero"
        );
        require(
            amount <= balanceOf(sender),
            "You are trying to transfer more than your balance"
        );

        if (block.timestamp < _maxWalletExpiry) {
            if (
                !isFeeExempt[sender] &&
                !isFeeExempt[recipient] &&
                recipient != address(pair) &&
                recipient != address(DEAD)
            ) {
                require(
                    _balances[recipient].add(amount) <= _maxWalletTokens,
                    "Recipient exceeds maximum wallet amount."
                );
            }
        }
    }

    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) private {
        preTxCheck(sender, recipient, amount);
        checkTradingAllowed(sender, recipient);
        swapBack(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount);

        uint256 amountReceived = shouldTakeFee(sender, recipient)
            ? takeFee(sender, recipient, amount)
            : amount;

        _balances[recipient] = _balances[recipient].add(amountReceived);
        emit Transfer(sender, recipient, amountReceived);
    }

    function setStructure(
        uint256 _buy,
        uint256 _sell,
        uint256 _trans
    ) external onlyOwner {
        buyFee = _buy;
        sellFee = _sell;
        transferFee = _trans;
        require(
            buyFee <= denominator.div(20) &&
                sellFee <= denominator.div(20) &&
                transferFee <= denominator.div(50),
            "buyFee and sellFee cannot be more than 5%, transferFee cannot be more than 2%"
        );
    }

    function setParameters(
        uint256 _buy,
        uint256 _trans,
        uint256 _wallet
    ) external onlyOwner {
        uint256 newTx = (totalSupply() * _buy) / denominator;
        uint256 newTransfer = (totalSupply() * _trans) / denominator;
        uint256 newWallet = (totalSupply() * _wallet) / denominator;
        _maxWalletTokens = newWallet;
        uint256 limit = totalSupply().mul(5).div(1000);
        require(
            newTx >= limit && newTransfer >= limit && newWallet >= limit,
            "maxTx and maxWallet cannot be less than .5%"
        );
    }

    function swapTokensForEth(uint256 tokenAmount) private {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();
        _approve(address(this), address(router), tokenAmount);
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function swapAndCollectEth(uint256 tokens) private lockTheSwap {
        uint256 initialBalance = address(this).balance;
        swapTokensForEth(tokens);
        uint256 deltaBalance = address(this).balance.sub(initialBalance);

        if (deltaBalance > uint256(0)) {
            deltaBalance = address(this).balance;
            payable(teamWallet).transfer(deltaBalance);
        }
    }

    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    function shouldSwapBack(
        address sender,
        address recipient,
        uint256 amount
    ) internal view returns (bool) {
        bool aboveMin = amount >= _minTokenAmount;
        bool aboveThreshold = balanceOf(address(this)) >= swapbackThreshold;
        return
            !swapping &&
            swapEnabled &&
            aboveMin &&
            !isFeeExempt[sender] &&
            recipient == pair &&
            aboveThreshold;
    }

    function swapBack(
        address sender,
        address recipient,
        uint256 amount
    ) internal {
        if (shouldSwapBack(sender, recipient, amount)) {
            uint256 bal = balanceOf(address(this));
            if (bal >= (_totalSupply * 1) / 100) {
                bal = (_totalSupply * 1) / 100;
            }
            swapAndCollectEth(bal);
        }
    }

    function shouldTakeFee(
        address sender,
        address recipient
    ) internal view returns (bool) {
        return !isFeeExempt[sender] && !isFeeExempt[recipient];
    }

    function getTotalFee(
        address sender,
        address recipient
    ) public view returns (uint256) {
        if (recipient == pair) {
            return sellFee;
        }
        if (sender == pair) {
            return buyFee;
        }

        return transferFee;
    }

    function takeFee(
        address sender,
        address recipient,
        uint256 amount
    ) internal returns (uint256) {
        if (getTotalFee(sender, recipient) > 0) {
            uint256 feeAmount = amount.div(denominator).mul(
                getTotalFee(sender, recipient)
            );
            _balances[address(this)] = _balances[address(this)].add(feeAmount);
            emit Transfer(sender, address(this), feeAmount);
            return amount.sub(feeAmount);
        }
        return amount;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            msg.sender,
            _allowances[sender][msg.sender].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 startTrading() external onlyOwner {
        require(!tradingOpen, "Trading already enabled");
        tradingOpen = true;
    }

    function checkTradingAllowed(
        address sender,
        address recipient
    ) internal view {
        if (!isFeeExempt[sender] && !isFeeExempt[recipient]) {
            require(tradingOpen, "ERC20: Trading is not allowed");
        }
    }

    function rescueTokens(
        address _address,
        uint256 _amount
    ) external onlyOwner {
        IERC20(_address).transfer(msg.sender, _amount);
    }

    function rescueEth() external onlyOwner {
        payable(msg.sender).transfer(address(this).balance);
    }

    function setTeamWallet(address _wallet) external onlyOwner {
        teamWallet = _wallet;
    }

    function setSwapbackThreshold(uint256 _amount) external onlyOwner {
        swapbackThreshold = _amount * (10 ** _decimals);
    }
}

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