Contract Source Code:

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
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");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
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;
    }
}

pragma solidity >=0.6.2;

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);
}

pragma solidity >=0.6.2;

import './IUniswapV2Router01.sol';

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;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

/// @title Callback for IUniswapV3PoolActions#swap
/// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface
interface IUniswapV3SwapCallback {
    /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
    /// @dev In the implementation you must pay the pool tokens owed for the swap.
    /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
    /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
    /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
    /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
    /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
    function uniswapV3SwapCallback(
        int256 amount0Delta,
        int256 amount1Delta,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;

import '@uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol';

/// @title Router token swapping functionality
/// @notice Functions for swapping tokens via Uniswap V3
interface ISwapRouter is IUniswapV3SwapCallback {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);

    struct ExactInputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);

    struct ExactOutputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);

    struct ExactOutputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";
import "@uniswap/v3-periphery/contracts/interfaces/ISwapRouter.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

contract CashVerseTreasury is Ownable, ReentrancyGuard {
    IUniswapV2Router02 public uniswapV2Router;
    ISwapRouter public uniswapV3Router;
    address public WETH;
    address public profitWallet;
    uint256 public totalDeposited;
    uint256 public totalProfits;
    uint256 public totalParticipants;
    uint256 public minDeposit = 0.03 ether;
    uint256 public maxParticipants = 25;
    uint256 public pendingProfitWithdrawal;

    struct User {
        uint256 deposited;
        uint256 claimableProfits;
        uint256 depositIndex;
    }

    struct TokenInfo {
        uint256 ethSpent;
        uint256 tokensBought;
        uint256 tokenPriceAtBuy;
        uint256 tokensSold;
        uint256 ethReceived;
        uint256 totalProfit;
        uint256 totalLoss;
    }

    mapping(address => User) public users;
    mapping(address => TokenInfo) public tokenInfo;

    address[] public userList;

    event Deposited(address indexed user, uint256 amount);
    event Withdrawn(address indexed user, uint256 amount);
    event TokenBought(
        address indexed user,
        uint256 amountSpent,
        address tokenAddress,
        bool withTax,
        bool isV3
    );
    event TokenSold(
        address indexed user,
        uint256 amountReceived,
        address tokenAddress,
        bool initialSell,
        bool withTax,
        bool isV3
    );
    event ProfitDistributed(uint256 totalProfit);
    event EmergencyWithdrawal(address tokenAddress, uint256 amount);

    modifier onlyParticipants() {
        require(users[msg.sender].deposited > 0, "Not a participant");
        _;
    }

    constructor(
        address _uniswapV2Router,
        address _uniswapV3Router,
        address _weth,
        address _profitWallet
    ) {
        uniswapV2Router = IUniswapV2Router02(_uniswapV2Router);
        uniswapV3Router = ISwapRouter(_uniswapV3Router);
        WETH = _weth;
        profitWallet = _profitWallet;
    }

    function deposit() external payable nonReentrant {
        require(msg.value >= minDeposit, "Minimum deposit not met");
        require(
            totalParticipants < maxParticipants,
            "Participant limit reached"
        );

        if (users[msg.sender].deposited == 0) {
            users[msg.sender].depositIndex = userList.length;
            userList.push(msg.sender);
            totalParticipants++;
        }

        users[msg.sender].deposited += msg.value;
        totalDeposited += msg.value;

        emit Deposited(msg.sender, msg.value);
    }

    function withdraw(uint256 amount) external nonReentrant onlyParticipants {
        User storage user = users[msg.sender];
        require(user.deposited >= amount, "Insufficient balance");

        uint256 totalLoss = calculateTotalLoss();
        uint256 adjustedAmount = (address(this).balance *
            (user.deposited - totalLoss)) / totalDeposited;
        require(adjustedAmount >= amount, "Insufficient contract balance");

        user.deposited -= amount;
        totalDeposited -= amount;

        if (user.deposited == 0) {
            uint256 index = user.depositIndex;
            address lastUser = userList[userList.length - 1];
            userList[index] = lastUser;
            users[lastUser].depositIndex = index;
            userList.pop();
            totalParticipants--;
        }

        payable(msg.sender).transfer(amount);

        emit Withdrawn(msg.sender, amount);
    }

    function buyToken(
        address tokenAddress,
        uint256 percentage,
        bool withTax,
        bool isV3,
        uint24 fee // For Uniswap v3
    ) external onlyOwner nonReentrant {
        require(percentage > 0 && percentage <= 100, "Invalid percentage");

        uint256 ethAmount = (address(this).balance * percentage) / 100;
        require(ethAmount <= address(this).balance, "Insufficient ETH balance");

        uint256 tokensBought = executeBuy(
            tokenAddress,
            ethAmount,
            withTax,
            isV3,
            fee
        );

        uint256 tokenPrice = (ethAmount * 1e18) / tokensBought;
        tokenInfo[tokenAddress].ethSpent += ethAmount;
        tokenInfo[tokenAddress].tokensBought += tokensBought;
        tokenInfo[tokenAddress].tokenPriceAtBuy = tokenPrice;

        uint256 gasSpent = tx.gasprice * gasleft();
        tokenInfo[tokenAddress].totalLoss += gasSpent;

        // Deduct ETH spent proportionally from users' deposits
        for (uint256 i = 0; i < userList.length; i++) {
            address userAddress = userList[i];
            User storage user = users[userAddress];
            uint256 userShare = (ethAmount * user.deposited) / totalDeposited;
            user.deposited -= userShare;
        }
        totalDeposited -= ethAmount;

        emit TokenBought(msg.sender, ethAmount, tokenAddress, withTax, isV3);
    }

    function sellToken(
        address tokenAddress,
        uint256 percentage,
        bool initialSell,
        bool withTax,
        bool isV3,
        uint24 fee // For Uniswap v3
    ) external onlyOwner nonReentrant {
        require(percentage > 0 && percentage <= 100, "Invalid percentage");

        TokenInfo storage info = tokenInfo[tokenAddress];
        uint256 tokenAmount;
        uint256 ethReceived;

        if (initialSell) {
            uint256 ethAmount = info.ethSpent;
            tokenAmount = (ethAmount * 1e18) / info.tokenPriceAtBuy;
        } else {
            tokenAmount = (info.tokensBought * percentage) / 100;
        }

        require(tokenAmount > 0, "Token amount must be greater than zero");

        // Ensure allowance is set
        uint256 currentAllowance = IERC20(tokenAddress).allowance(
            address(this),
            address(uniswapV2Router)
        );
        if (currentAllowance < tokenAmount) {
            IERC20(tokenAddress).approve(address(uniswapV2Router), tokenAmount);
        }

        ethReceived = executeSell(
            tokenAddress,
            tokenAmount,
            withTax,
            isV3,
            fee
        );

        info.tokensSold += tokenAmount;
        info.ethReceived += ethReceived;

        uint256 gasSpent = tx.gasprice * gasleft();
        info.totalLoss += gasSpent;

        if (initialSell) {
            totalDeposited -= ethReceived;
            pendingProfitWithdrawal += ethReceived;
        } else {
            uint256 profit = ethReceived > info.ethSpent
                ? ethReceived - info.ethSpent
                : 0;
            uint256 loss = info.ethSpent > ethReceived
                ? info.ethSpent - ethReceived
                : 0;

            info.totalProfit += profit;
            info.totalLoss += loss;

            totalProfits += profit;
            distributeProfits(profit);
        }

        emit TokenSold(
            msg.sender,
            ethReceived,
            tokenAddress,
            initialSell,
            withTax,
            isV3
        );
    }

    function executeBuy(
        address tokenAddress,
        uint256 ethAmount,
        bool withTax,
        bool isV3,
        uint24 fee
    ) internal returns (uint256) {
        uint256 tokensBought;

        if (isV3) {
            // Uniswap v3 buy
            ISwapRouter.ExactInputSingleParams memory params = ISwapRouter
                .ExactInputSingleParams({
                    tokenIn: WETH,
                    tokenOut: tokenAddress,
                    fee: fee,
                    recipient: address(this),
                    deadline: block.timestamp,
                    amountIn: ethAmount,
                    amountOutMinimum: 0,
                    sqrtPriceLimitX96: 0
                });
            tokensBought = uniswapV3Router.exactInputSingle{value: ethAmount}(
                params
            );
        } else {
            // Uniswap v2 buy
            address[] memory path = new address[](2);
            path[0] = uniswapV2Router.WETH();
            path[1] = tokenAddress;

            if (withTax) {
                uniswapV2Router
                    .swapExactETHForTokensSupportingFeeOnTransferTokens{
                    value: ethAmount
                }(0, path, address(this), block.timestamp);
                tokensBought = IERC20(tokenAddress).balanceOf(address(this));
            } else {
                uint256[] memory amounts = uniswapV2Router
                    .swapExactETHForTokens{value: ethAmount}(
                    0,
                    path,
                    address(this),
                    block.timestamp
                );
                tokensBought = amounts[1];
            }
        }

        return tokensBought;
    }

    function executeSell(
        address tokenAddress,
        uint256 tokenAmount,
        bool withTax,
        bool isV3,
        uint24 fee
    ) internal returns (uint256) {
        uint256 ethReceived;

        if (isV3) {
            // Uniswap v3 sell
            ISwapRouter.ExactInputSingleParams memory params = ISwapRouter
                .ExactInputSingleParams({
                    tokenIn: tokenAddress,
                    tokenOut: WETH,
                    fee: fee,
                    recipient: address(this),
                    deadline: block.timestamp,
                    amountIn: tokenAmount,
                    amountOutMinimum: 0,
                    sqrtPriceLimitX96: 0
                });
            ethReceived = uniswapV3Router.exactInputSingle(params);
        } else {
            // Uniswap v2 sell
            address[] memory path = new address[](2);
            path[0] = tokenAddress;
            path[1] = uniswapV2Router.WETH();

            if (withTax) {
                uniswapV2Router
                    .swapExactTokensForETHSupportingFeeOnTransferTokens(
                        tokenAmount,
                        0,
                        path,
                        address(this),
                        block.timestamp
                    );
                ethReceived = address(this).balance;
            } else {
                uint256[] memory amounts = uniswapV2Router
                    .swapExactTokensForETH(
                        tokenAmount,
                        0,
                        path,
                        address(this),
                        block.timestamp
                    );
                ethReceived = amounts[1];
            }
        }

        return ethReceived;
    }

    function distributeProfits(uint256 profit) internal {
        uint256 profitForDistribution = (profit * 50) / 100;
        uint256 profitForContract = (profit * 10) / 100;
        uint256 profitForWallet = profit -
            profitForDistribution -
            profitForContract;

        pendingProfitWithdrawal += profitForWallet;

        for (uint256 i = 0; i < userList.length; i++) {
            address userAddress = userList[i];
            User storage user = users[userAddress];
            uint256 userShare = (profitForDistribution * user.deposited) /
                totalDeposited;
            user.claimableProfits += userShare;
        }

        totalDeposited += profitForContract;
        emit ProfitDistributed(profit);
    }

    function claimProfits() external nonReentrant onlyParticipants {
        User storage user = users[msg.sender];
        uint256 claimable = user.claimableProfits;
        require(claimable > 0, "No profits to claim");

        user.claimableProfits = 0;
        payable(msg.sender).transfer(claimable);

        emit Withdrawn(msg.sender, claimable);
    }

    function getTokenInfo(
        address tokenAddress
    ) external view returns (TokenInfo memory) {
        return tokenInfo[tokenAddress];
    }

    function getMaxParticipants() external view returns (uint256) {
        return maxParticipants;
    }

    function getRemainingParticipants() external view returns (uint256) {
        return maxParticipants - totalParticipants;
    }

    function setMaxParticipants(uint256 _maxParticipants) external onlyOwner {
        maxParticipants = _maxParticipants;
    }

    function setMinDeposit(uint256 _minDeposit) external onlyOwner {
        minDeposit = _minDeposit;
    }

    function checkWithdrawableAmount()
        external
        view
        onlyParticipants
        returns (uint256)
    {
        User storage user = users[msg.sender];
        uint256 totalLoss = calculateTotalLoss();
        uint256 withdrawable = user.deposited -
            (totalLoss * user.deposited) /
            totalDeposited;
        return withdrawable;
    }

    function withdrawExcessETH(
        uint256 percentage
    ) external onlyOwner nonReentrant {
        require(percentage > 0 && percentage <= 100, "Invalid percentage");

        uint256 totalDepositorBalance = address(this).balance - totalDeposited;
        uint256 withdrawAmount = (totalDepositorBalance * percentage) / 100;

        require(withdrawAmount > 0, "No excess ETH to withdraw");

        payable(owner()).transfer(withdrawAmount);
    }

    function emergencyWithdrawToken(address tokenAddress) external onlyOwner {
        uint256 tokenBalance = IERC20(tokenAddress).balanceOf(address(this));
        require(tokenBalance > 0, "No tokens to withdraw");

        IERC20(tokenAddress).transfer(owner(), tokenBalance);

        emit EmergencyWithdrawal(tokenAddress, tokenBalance);
    }

    function withdrawAllETH() external onlyOwner nonReentrant {
        uint256 balance = address(this).balance;
        require(balance > 0, "No ETH to withdraw");

        payable(owner()).transfer(balance);
    }

    function withdrawPendingProfits() external onlyOwner nonReentrant {
        require(pendingProfitWithdrawal > 0, "No pending profits to withdraw");

        uint256 amountToWithdraw = pendingProfitWithdrawal;
        pendingProfitWithdrawal = 0;

        payable(profitWallet).transfer(amountToWithdraw);
    }

    function calculateTotalLoss() internal view returns (uint256) {
        uint256 totalLoss = 0;
        for (uint256 i = 0; i < userList.length; i++) {
            address userAddress = userList[i];
            totalLoss +=
                users[userAddress].deposited *
                tokenInfo[userAddress].totalLoss;
        }
        return totalLoss;
    }
}