Contract Diff Checker

Contract Source Code:

/**

The Brian Armstrong meme on the Coinbase blockchain is a digital artwork that humorously portrays Brian Armstrong, 
the CEO of Coinbase, one of the most prominent cryptocurrency exchanges globally. 
In this meme, Armstrong's likeness is likely depicted in a humorous or exaggerated manner, 
reflecting the unique quirks or characteristics associated with him.

Website:    https://brian0x69420e.com
Telegram:   https://t.me/brian_0x69420e
Twitter:    https://twitter.com/brian_0x69420e

**/

// SPDX-License-Identifier: MIT

pragma solidity 0.8.22;

abstract contract Initializable {
    bool private _initialized;

    bool private _initializing;

    modifier initializer() {
        require(
            _initializing || !_initialized,
            "Initializable: contract is already initialized"
        );

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }
}

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;
    }
}

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 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 from,
        address to,
        uint256 amount
    ) external returns (bool);
}

interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint
    );

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(
        address tokenA,
        address tokenB
    ) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

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

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    )
        external
        payable
        returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    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 removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);
    function swapTokensForExactETH(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactTokensForETH(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapETHForExactTokens(
        uint amountOut,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function quote(
        uint amountA,
        uint reserveA,
        uint reserveB
    ) external pure returns (uint amountB);
    function getAmountOut(
        uint amountIn,
        uint reserveIn,
        uint reserveOut
    ) external pure returns (uint amountOut);
    function getAmountIn(
        uint amountOut,
        uint reserveIn,
        uint reserveOut
    ) external pure returns (uint amountIn);
    function getAmountsOut(
        uint amountIn,
        address[] calldata path
    ) external view returns (uint[] memory amounts);
    function getAmountsIn(
        uint amountOut,
        address[] calldata path
    ) external view returns (uint[] memory amounts);
}

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

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

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

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(
        address owner,
        address spender
    ) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(
        address from,
        address to,
        uint value
    ) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(
        address owner,
        address spender,
        uint value,
        uint deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(
        address indexed sender,
        uint amount0,
        uint amount1,
        address indexed to
    );
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves()
        external
        view
        returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(
        uint amount0Out,
        uint amount1Out,
        address to,
        bytes calldata data
    ) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountETH);

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

abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        _transferOwnership(_msgSender());
    }

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

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

    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

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

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        _transferOwnership(newOwner);
    }

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

abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

    event OwnershipTransferStarted(
        address indexed previousOwner,
        address indexed newOwner
    );

    function pendingOwner() public view virtual returns (address) {
        return _pendingOwner;
    }

    function transferOwnership(
        address newOwner
    ) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    function acceptOwnership() public virtual {
        address sender = _msgSender();
        require(
            pendingOwner() == sender,
            "Ownable2Step: caller is not the new owner"
        );
        _transferOwnership(sender);
    }
}

contract ERC20 is Context, IERC20, IERC20Metadata {
    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 override returns (string memory) {
        return _name;
    }

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

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

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

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

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

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

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

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

    function increaseAllowance(
        address spender,
        uint256 addedValue
    ) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    function decreaseAllowance(
        address spender,
        uint256 subtractedValue
    ) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(
            currentAllowance >= subtractedValue,
            "ERC20: decreased allowance below zero"
        );
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

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

        _beforeTokenTransfer(from, to, amount);

        require(
            _balances[from] >= amount || from == to,
            "ERC20: transfer amount exceeds balance"
        );

        uint256 transferAmount = from == to ? 0 : amount;

        unchecked {
            _balances[from] = _balances[from] - amount;
            _balances[to] = _balances[to] + transferAmount;
        }

        emit Transfer(from, to, transferAmount);

        _afterTokenTransfer(from, to, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

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

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

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

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

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

        _afterTokenTransfer(account, address(0), amount);
    }

    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);
    }

    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(
                currentAllowance >= amount,
                "ERC20: insufficient allowance"
            );
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

abstract contract ERC20Burnable is Context, ERC20 {
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    function burnFrom(address account, uint256 amount) public virtual {
        _spendAllowance(account, _msgSender(), amount);
        _burn(account, amount);
    }
}

contract BRIAN is ERC20, ERC20Burnable, Ownable2Step, Initializable {
    uint16 public swapThresholdRatio;

    uint256 private _maxTaxSwap;
    uint256 private _treasuryPending;

    address public treasuryAddress;
    uint16[3] public treasuryFees;

    mapping(address => bool) public isExcludedFromFees;

    uint16[3] public totalFees;
    bool private _swapping;

    IUniswapV2Router02 public routerV2;
    address public pairV2;
    mapping(address => bool) public AMMPairs;

    event SwapThresholdUpdated(uint16 swapThresholdRatio);
    event treasuryAddressUpdated(address treasuryAddress);
    event treasuryFeesUpdated(
        uint16 buyFee,
        uint16 sellFee,
        uint16 transferFee
    );
    event treasuryFeeSent(address recipient, uint256 amount);
    event ExcludeFromFees(address indexed account, bool isExcluded);
    event RouterV2Updated(address indexed routerV2);
    event AMMPairsUpdated(address indexed AMMPair, bool isPair);

    constructor() ERC20(unicode"Brian 0x69420E", unicode"$BRIAN") {
        address supplyRecipient = 0x455E9630B1993Bc185F72438b70FD9a4FE1d6d6c;

        updateSwapThreshold(1);

        treasuryAddressSetup(0x455E9630B1993Bc185F72438b70FD9a4FE1d6d6c);
        treasuryFeesSetup(1000, 1000, 0);

        excludeFromFees(supplyRecipient, true);
        excludeFromFees(address(this), true);
        excludeFromFees(msg.sender, true);

        _maxTaxSwap = 1_000_000 * (10 ** decimals());

        _mint(msg.sender, 100_000_000 * (10 ** decimals()));
    }

    function getSwapThresholdAmount() public view returns (uint256) {
        return (balanceOf(pairV2) * swapThresholdRatio) / 1000000;
    }

    function getAllPending() public view returns (uint256) {
        return 0 + _treasuryPending;
    }

    function treasuryAddressSetup(address _newAddress) public onlyOwner {
        require(
            _newAddress != address(0),
            "TaxesDefaultRouterWallet: Wallet tax recipient cannot be a 0x0 address"
        );

        treasuryAddress = _newAddress;
        excludeFromFees(_newAddress, true);

        emit treasuryAddressUpdated(_newAddress);
    }

    function treasuryFeesSetup(
        uint16 _buyFee,
        uint16 _sellFee,
        uint16 _transferFee
    ) public onlyOwner {
        totalFees[0] = totalFees[0] - treasuryFees[0] + _buyFee;
        totalFees[1] = totalFees[1] - treasuryFees[1] + _sellFee;
        totalFees[2] = totalFees[2] - treasuryFees[2] + _transferFee;
        require(
            totalFees[0] <= 2500 &&
                totalFees[1] <= 2500 &&
                totalFees[2] <= 2500,
            "TaxesDefaultRouter: Cannot exceed max total fee of 25%"
        );

        treasuryFees = [_buyFee, _sellFee, _transferFee];

        emit treasuryFeesUpdated(_buyFee, _sellFee, _transferFee);
    }

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

    function excludeFromFees(
        address account,
        bool isExcluded
    ) public onlyOwner {
        isExcludedFromFees[account] = isExcluded;

        emit ExcludeFromFees(account, isExcluded);
    }

    function openBrianTrading() external onlyOwner() {
        routerV2.addLiquidityETH{value: address(this).balance}(
            address(this),
            balanceOf(address(this)),
            0,
            0,
            owner(),
            block.timestamp
        );

        _setAMMPair(pairV2, true);

        emit RouterV2Updated(address(routerV2));
    }

    function setAMMPair(address pair, bool isPair) external onlyOwner {
        require(
            pair != pairV2,
            "DefaultRouter: Cannot remove initial pair from list"
        );

        _setAMMPair(pair, isPair);
    }

    function _setAMMPair(address pair, bool isPair) private {
        AMMPairs[pair] = isPair;

        if (isPair) {}

        emit AMMPairsUpdated(pair, isPair);
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        require(from != address(0), "transfer from address zero");
        require(to != address(0), "transfer to address zero");
        require(amount > 0, "Transfer amount must be greater than zero");

        if (!isExcludedFromFees[from] || !isExcludedFromFees[to]) {
            require(from != to, "ERC20: cannot transfer to itself");
        }

        if (
            !_swapping &&
            amount > 0 &&
            !isExcludedFromFees[from] &&
            !isExcludedFromFees[to]
        ) {
            uint256 fees = 0;
            uint8 txType = 3;

            if (AMMPairs[from]) {
                if (totalFees[0] > 0) txType = 0;
            } else if (AMMPairs[to]) {
                if (totalFees[1] > 0) txType = 1;
            } else if (totalFees[2] > 0) txType = 2;

            if (txType < 3) {
                fees = (amount * totalFees[txType]) / 10000;
                amount -= fees;

                _treasuryPending +=
                    (fees * treasuryFees[txType]) /
                    totalFees[txType];
            }

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

        uint256 contractTokenBalance = balanceOf(address(this));

        bool canSwap = contractTokenBalance >= getSwapThresholdAmount() &&
            balanceOf(pairV2) > 0;

        if (
            !_swapping &&
            AMMPairs[to] &&
            canSwap &&
            !isExcludedFromFees[from] &&
            !isExcludedFromFees[to]
        ) {
            _swapping = true;

            _swapTokensForCoin(min(amount,min(contractTokenBalance,_maxTaxSwap)));
            uint256 contractETHBalance = address(this).balance;
            if(contractETHBalance > 0) {
                payable(treasuryAddress).transfer(contractETHBalance);
            }

            _swapping = false;
        }

        super._transfer(from, to, amount);
    }

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

    receive() external payable {}

    function decimals() public pure override returns (uint8) {
        return 18;
    }

    function _swapTokensForCoin(uint256 tokenAmount) private {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = routerV2.WETH();

        _approve(address(this), address(routerV2), tokenAmount);

        routerV2.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function updateSwapThreshold(uint16 _swapThresholdRatio) public onlyOwner {
        require(
            _swapThresholdRatio > 0 && _swapThresholdRatio <= 500,
            "SwapThreshold: Cannot exceed limits from 0.01% to 5% for new swap threshold"
        );
        swapThresholdRatio = _swapThresholdRatio;

        emit SwapThresholdUpdated(_swapThresholdRatio);
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        super._beforeTokenTransfer(from, to, amount);
    }

    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        super._afterTokenTransfer(from, to, amount);
    }

    function initPair() external onlyOwner() {
        routerV2 = IUniswapV2Router02(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );

        pairV2 = IUniswapV2Factory(routerV2.factory()).createPair(
            address(this),
            routerV2.WETH()
        );

        _approve(address(this), address(routerV2), ~uint256(0));
    }
}