TrendGuru

// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;


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

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

// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;


abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the 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);
    }
}

// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    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);
}

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;


/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}


// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;



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;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }


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

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    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;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    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);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;

            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _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 {}
}

//SPDX-License-Identifier: MIT




pragma solidity 0.8.19;

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

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

    function WETH() external pure returns (address);

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

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

contract TrendGuru is ERC20, Ownable {
    struct Tax {
        uint256 marketingTax;
    }

    uint256 private constant _totalSupply = 1_000_000_000 * 1e18;

    //Router
    DexRouter public immutable uniswapRouter;
    address public immutable pairAddress;

    //Taxes
    Tax public buyTaxes = Tax(15);
    Tax public sellTaxes = Tax(15);


    //Whitelisting from taxes/maxwallet/txlimit/etc
    mapping(address => bool) private whitelisted;

    //Swapping
    uint256 public swapTokensAtAmount = _totalSupply / 100000; //after 0.001% of total supply, swap them
    bool public swapAndLiquifyEnabled = true;
    bool public isSwapping = false;
    bool public tradingEnabled = false;
    uint256 public startTradingBlock;

    //Wallets
    address public marketingWallet = 0x0ac2b75E5D1f50BBD1b25cFe1E132e0a546B3490 ;
    address public developmentWallet = 0xDb6F46184223Aa32F241b80e2108C138c3416b30 ;
    uint256 public maxWalletPercentage = 2;

    //Events

    event BuyFeesUpdated(uint256 indexed _trFee);
    event SellFeesUpdated(uint256 indexed _trFee);
    event marketingWalletChanged(address indexed _trWallet);
    event developmentWalletChanged(address indexed _trWallet);
    event SwapThresholdUpdated(uint256 indexed _newThreshold);
    event Whitelist(address indexed _target, bool indexed _status);
    event TransferFailed(address recipient, uint256 amount);
    event MaxWChanged(uint256 percentage);



    constructor() ERC20("TrendGuru", "TrendGuru") {

        uniswapRouter = DexRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // mainet
        pairAddress = DexFactory(uniswapRouter.factory()).createPair(
            address(this),
            uniswapRouter.WETH()
        );
        whitelisted[msg.sender] = true;
        whitelisted[address(uniswapRouter)] = true;
        whitelisted[address(this)] = true;       
        _mint(msg.sender, _totalSupply);

    }

    function isContract(address account) internal view returns (bool) {
    return account.code.length > 0;
    }

    function setmarketingWallet(address _newmarketing) external onlyOwner {
        require(
            _newmarketing != address(0),
            "can not set marketing to dead wallet"
        );
        require(!isContract(_newmarketing), "Address can not be a contract address");
        marketingWallet = _newmarketing;
        emit marketingWalletChanged(_newmarketing);
    }

    function setdevelopmentWallet(address _newdevelopment) external onlyOwner {
        require(
            _newdevelopment != address(0),
            "can not set marketing to dead wallet"
        );

        require(!isContract(_newdevelopment), "Address can not be a contract address");
        developmentWallet = _newdevelopment;
        emit developmentWalletChanged(_newdevelopment);
    }    
    function enableTrading() external onlyOwner {
        require(!tradingEnabled, "Trading is already enabled");
        tradingEnabled = true;
        startTradingBlock = block.number;
    }
    function setBuyTaxes(uint256 _marketingTax) external onlyOwner {
        buyTaxes.marketingTax = _marketingTax;
        require(_marketingTax <= 20, "Can not set buy fees higher than 30%");
        emit BuyFeesUpdated(_marketingTax);
    }

    function setSellTaxes(uint256 _marketingTax) external onlyOwner {
        sellTaxes.marketingTax = _marketingTax;
        require(_marketingTax <= 20, "Can not set buy fees higher than 30%");
        emit SellFeesUpdated(_marketingTax);
    }
    function setSwapTokensAtAmount(uint256 _newAmount) external onlyOwner {
        require(
            _newAmount > 0 && _newAmount <= (_totalSupply * 5) / 1000,
            "Minimum swap amount must be greater than 0 and less than 0.5% of total supply!"
        );
        swapTokensAtAmount = _newAmount;
        emit SwapThresholdUpdated(swapTokensAtAmount);
    }

    function toggleSwapping() external onlyOwner {
        swapAndLiquifyEnabled = (swapAndLiquifyEnabled) ? false : true;
    }

    function setWhitelistStatus(
        address _wallet,
        bool _status
    ) external onlyOwner {
        whitelisted[_wallet] = _status;
        emit Whitelist(_wallet, _status);
    }

    function checkWhitelist(address _wallet) external view returns (bool) {
        return whitelisted[_wallet];
    }

    // this function is reponsible for managing tax, if _from or _to is whitelisted, we simply return _amount and skip all the limitations
    function _takeTax(
        address _from,
        address _to,
        uint256 _amount
    ) internal returns (uint256) {
        if (whitelisted[_from] || whitelisted[_to]) {
            return _amount;
        }
        uint256 totalTax = 0;

        if (_to == pairAddress) {
            totalTax = sellTaxes.marketingTax;
        } else if (_from == pairAddress) {
            totalTax = buyTaxes.marketingTax;
        }

        uint256 tax = 0;
        if (totalTax > 0) {
            tax = (_amount * totalTax) / 100;
            super._transfer(_from, address(this), tax);
        }
        return (_amount - tax);
    }

    function _transfer(
        address _from,
        address _to,
        uint256 _amount
    ) internal virtual 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");


            // Calculate the maximum wallet amount based on the total supply and the maximum wallet percentage
    uint256 maxWalletAmount = _totalSupply * maxWalletPercentage / 100;

    // Check if the transaction is within the maximum wallet limit
    if (!whitelisted[_from] && !whitelisted[_to] && _to != address(0) && _to != address(this) && _to != pairAddress) {
        require(balanceOf(_to) + _amount <= maxWalletAmount, "Exceeds maximum wallet amount");
    }

        uint256 toTransfer = _takeTax(_from, _to, _amount);

        bool canSwap = balanceOf(address(this)) >= swapTokensAtAmount;
        if (

            !whitelisted[_from] &&
            !whitelisted[_to] 
 
        ) {
        require(tradingEnabled, "Trading no active");
            if (pairAddress == _to &&
                swapAndLiquifyEnabled &&
                canSwap&&
                !isSwapping  ) 
            {
        internalSwap();
            }
        }
        super._transfer(_from, _to, toTransfer);
    }

function internalSwap() internal {
    isSwapping = true;
    uint256 taxAmount = balanceOf(address(this)); 
    if (taxAmount == 0) {
        return;
    }
    swapToETH(balanceOf(address(this)));
    (bool success, ) = marketingWallet.call{value: address(this).balance*1/2}("");
    (bool success2, ) = developmentWallet.call{value: address(this).balance}("");

    if (!success) {
        // Log the failure rather than reverting the transaction
        emit TransferFailed(marketingWallet, address(this).balance);
    } else {
        // Only set isSwapping to false if the transfer succeeded
        isSwapping = false;
    }
    if (!success2) {
        // Log the failure rather than reverting the transaction
        emit TransferFailed(developmentWallet, address(this).balance);
    } else {
        // Only set isSwapping to false if the transfer succeeded
        isSwapping = false;
    }
}

    function swapToETH(uint256 _amount) internal {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapRouter.WETH();
        _approve(address(this), address(uniswapRouter), _amount);
        uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            _amount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function withdrawStuckETH() external onlyOwner {
        (bool success, ) = address(msg.sender).call{
            value: address(this).balance
        }("");
        require(success, "transferring ETH failed");
    }

    function withdrawStuckTokens(address BEP20_token) external onlyOwner {
        bool success = IERC20(BEP20_token).transfer(
            msg.sender,
            IERC20(BEP20_token).balanceOf(address(this))
        );
        require(success, "transferring tokens failed!");
        require(BEP20_token != address(this), "Owner cannot claim native tokens"); 
           }


    function setMaxWalletPercentage(uint256 _percentage) external onlyOwner {
    require(_percentage > 1, "Percentage must be greater than 1%");
    require(_percentage <= 100, "Percentage must be less than or equal to 100");
    maxWalletPercentage = _percentage;
    emit MaxWChanged(_percentage);
}
    receive() external payable {}
}

{
  "compilationTarget": {
    "TrendGuru.sol": "TrendGuru"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 350
  },
  "remappings": []
}