HOPPY

// SPDX-License-Identifier: Unlicensed

/*

https://t.me/hoppytokenbase

*/

pragma solidity 0.8.19;


interface IERC20 {
    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 IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.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 recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, 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) {
        _approve(_msgSender(), spender, 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 increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

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

        return true;
    }

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

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


library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

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

    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;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

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

}

contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the 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;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

}

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    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);
}

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

    IUniswapV2Router02 public uniswapV2Router;
    address public immutable uniswapV2Pair;

    bool private inSwap;

    uint256 public marketingBuyFee = 0;
    uint256 public marketingSellFee = 0;
    uint256 public swapTokensAtAmount = 1200000000 * (10**18);
    uint256 public maxWalletToken = 1000000000 * (10**18);
    uint256 public maxTransactionAmount = 1000000000 * (10**18);

    address payable public marketingWallet = payable(0x473fe9De15cC47Ec34D24ee54535A4fe43a9C13F);

    // exlcude from fees and max wallet
    mapping (address => bool) private _isExcludedFromFees;

    event ExcludeFromFees(address indexed account, bool isExcluded);

    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor(address _owner) ERC20("HOPPY", "HOPPY") {
    	IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x6BDED42c6DA8FBf0d2bA55B2fa120C5e0c8D7891); 
         // Create a uniswap pair for this new token
        address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());

        uniswapV2Router = _uniswapV2Router;
        uniswapV2Pair = _uniswapV2Pair;

        // exclude from paying fees or having max wallet limit
        _isExcludedFromFees[_owner] = true;
        _isExcludedFromFees[address(this)] = true;
        _isExcludedFromFees[marketingWallet] = true;
        
        /*
            an internal function that is only called here,
            and CANNOT be called ever again
        */
        _createTotalSupply(_owner, 1_000_000_000 * (10**18));
    }

    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;
        }

        // Only the owner of this contract can bypass the max transfer amount
        if(!_isExcludedFromFees[from] && !_isExcludedFromFees[to]) {
            require(amount <= maxTransactionAmount, "Transfer amount exceeds the maxTxAmount.");
        }
        
        if(from==uniswapV2Pair && !_isExcludedFromFees[from] && !_isExcludedFromFees[to] && to != address(uniswapV2Router)){
            uint256 contractBalanceRecepient = balanceOf(to);
            require(contractBalanceRecepient + amount <= maxWalletToken, "Exceeds maximum wallet token amount.");
        }

    	uint256 contractTokenBalance = balanceOf(address(this));
        
        bool overMinTokenBalance = contractTokenBalance >= swapTokensAtAmount;
       
        if(
            overMinTokenBalance &&
            !inSwap &&
            to==uniswapV2Pair
           
        ) {
            contractTokenBalance = swapTokensAtAmount;
            swapTokensForEth(contractTokenBalance);
        }

         // if any account belongs to _isExcludedFromFee account then remove the fee
        if(!_isExcludedFromFees[from] && !_isExcludedFromFees[to]) {
            uint256 fees;
            if(from==uniswapV2Pair) {
                fees = amount.mul(marketingBuyFee).div(100);

            }

            if(to==uniswapV2Pair) {
                fees = amount.mul(marketingSellFee).div(100);

            }

        	amount = amount.sub(fees);

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

        super._transfer(from, to, amount);

    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();

        if(allowance(address(this), address(uniswapV2Router)) < tokenAmount) {
          _approve(address(this), address(uniswapV2Router), ~uint256(0));
        }

        // make the swap
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            marketingWallet,
            block.timestamp
        );
        
    }

    receive() external payable {

  	}

    function isExcludedFromFees(address account) public view returns(bool) {
        return _isExcludedFromFees[account];
    }

    function setMaxWalletAndMaxTransaction(
        uint256 _maxTransaction,
        uint256 _maxWallet
    ) public onlyOwner {
        require(
            _maxTransaction >= ((totalSupply() * 5) / 1000),
            "ERC20: Cannot set maxTxn lower than 0.5%"
        );
        require(
            _maxWallet >= ((totalSupply() * 5) / 1000),
            "ERC20: Cannot set maxWallet lower than 0.5%"
        );
        maxTransactionAmount = _maxTransaction;
        maxWalletToken = _maxWallet;
    }

    function SetFee(uint256 _BuyFee, uint256 _SellFee) public onlyOwner {
        require(_BuyFee <= 10, "Buy Fee too high");
        marketingBuyFee = _BuyFee;
        require(_SellFee <= 10, "Sell Fee too high");
        marketingSellFee = _SellFee;
    }

    function setSwapEnabled(bool value) public onlyOwner {
        inSwap = value;
    }

    function excludeFromFees(address account, bool value) public onlyOwner {
        _isExcludedFromFees[account] = value;
        emit ExcludeFromFees(account, value);
    }

    function updateMarketingWallet(address payable _newWallet) public onlyOwner {
        marketingWallet = _newWallet;
    }

    function updateSwapThreshold(uint256 _newLimit) public onlyOwner {
        swapTokensAtAmount = _newLimit;
    }

    function withdrawStuckTokens(address tkn) public onlyOwner {
        bool success;
        if (tkn == address(0))
            (success, ) = address(msg.sender).call{
                value: address(this).balance
            }("");
        else {
            require(IERC20(tkn).balanceOf(address(this)) > 0, "No tokens");
            uint256 amount = IERC20(tkn).balanceOf(address(this));
            IERC20(tkn).transfer(msg.sender, amount);
        }
    }
  
}

{
  "compilationTarget": {
    "HOPPY.sol": "HOPPY"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}