Contract Source Code:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/ReentrancyGuardUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/PausableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";

contract AbstractPizzaUpgradeable is Initializable, OwnableUpgradeable, ReentrancyGuardUpgradeable, PausableUpgradeable {
    // Константы
    uint256 private constant BASE_POINTS_PER_CLICK = 100;
    uint256 private constant REFERRAL_LEVEL1_PERCENT = 20;
    uint256 private constant REFERRAL_LEVEL2_PERCENT = 5;
    uint256 private constant TOP_USERS_LIMIT = 50;
    uint256 private constant MAX_BATTLE_PASSES = 3;
    uint256 private constant BATTLE_PASS_BONUS_PERCENT = 20;
    uint256 private constant AUTO_CLICKER_DURATION = 10 minutes;

    // Структуры данных
    struct UserData {
        uint40 lastClickTime;
        uint64 points;
        uint64 totalReferralPoints;
        uint16 referralCount;
        uint8 battlePassCount;
        bool isRegistered;
    }

    struct ReferralRewards {
        uint64 pendingPoints;
        bool hasRewards;
    }

    struct UserScore {
        address userAddress;
        uint256 points;
    }

    struct AutoClicker {
        uint256 endTimestamp;
        bool claimed;
    }

    // Переменные состояния
    uint256 public battlePassPrice;
    uint256 public clickCooldown;
    uint256 public autoClickerPrice;

    mapping(address => UserData) private userData;
    mapping(address => address) private referralLevel1;
    mapping(address => address) private referralLevel2;
    mapping(address => ReferralRewards) private referralRewards;
    mapping(address => AutoClicker) private autoClicker;

    address[] private registeredUsersList;

    // События
    event UserRegistered(address indexed user, address indexed referrer1, address indexed referrer2);
    event BattlePassPurchased(address indexed user, uint8 battlePassCount);
    event BattlePassPriceChanged(uint256 newPrice);
    event FundsWithdrawn(address indexed owner, uint256 amount);
    event PointsEarned(address indexed user, uint256 amount);
    event ReferralPointsEarned(address indexed referral, address indexed user, uint256 amount, uint256 level);
    event ReferralRewardsClaimed(address indexed user, uint256 amount);
    event ClickCooldownChanged(uint256 newCooldown);
    event AutoClickerPurchased(address indexed user, uint256 endTimestamp);

    /// @notice Функция инициализации (вызывается один раз через прокси)
    /// @param initialPrice Начальная цена BattlePass
    function initialize(uint256 initialPrice) public initializer {
        __Ownable_init(msg.sender);
        __ReentrancyGuard_init();
        __Pausable_init();
        battlePassPrice = initialPrice;
        clickCooldown = 1 minutes;
        autoClickerPrice = 0.01 ether;
    }

    // Управление паузой
    function pause() external onlyOwner {
        _pause();
    }
    function unpause() external onlyOwner {
        _unpause();
    }

    // Регистрация пользователя с возможным указанием реферала первого уровня
    function registration(address referrer1) external whenNotPaused {
        require(!userData[msg.sender].isRegistered, "User already registered");
        if (referrer1 != address(0)) {
            require(referrer1 != msg.sender, "Cannot refer yourself");
            require(userData[referrer1].isRegistered, "Referrer not registered");
            referralLevel1[msg.sender] = referrer1;
            userData[referrer1].referralCount++;
            address potentialReferrer2 = referralLevel1[referrer1];
            if (potentialReferrer2 != address(0) && potentialReferrer2 != msg.sender && potentialReferrer2 != referrer1) {
                referralLevel2[msg.sender] = potentialReferrer2;
                userData[potentialReferrer2].referralCount++;
            }
        }
        userData[msg.sender].isRegistered = true;
        registeredUsersList.push(msg.sender);
        emit UserRegistered(msg.sender, referrer1, referralLevel2[msg.sender]);
    }

    // Вспомогательная функция для расчёта множителя очков
    function getPointsMultiplier(uint8 battlePassCount) internal pure returns (uint256) {
        return 100 + (battlePassCount * BATTLE_PASS_BONUS_PERCENT);
    }

    // Функция клика (с обычным или авто-кликом)
    function click() external whenNotPaused nonReentrant {
        UserData storage user = userData[msg.sender];
        require(user.isRegistered, "User not registered");
        if (autoClicker[msg.sender].endTimestamp != 0 && !autoClicker[msg.sender].claimed) {
            if (block.timestamp < autoClicker[msg.sender].endTimestamp) {
                revert("Auto-clicker active, wait for expiration");
            } else {
                uint256 numClicks = AUTO_CLICKER_DURATION / clickCooldown;
                uint256 autoPoints = (numClicks * BASE_POINTS_PER_CLICK * getPointsMultiplier(user.battlePassCount)) / 100;
                user.points += uint64(autoPoints);
                user.lastClickTime = uint40(block.timestamp);
                autoClicker[msg.sender].claimed = true;
                autoClicker[msg.sender].endTimestamp = 0;
                emit PointsEarned(msg.sender, autoPoints);
                return;
            }
        }
        require(block.timestamp >= user.lastClickTime + clickCooldown, "Cooldown period not finished");
        uint256 pointsToAdd = (BASE_POINTS_PER_CLICK * getPointsMultiplier(user.battlePassCount)) / 100;
        user.points += uint64(pointsToAdd);
        user.lastClickTime = uint40(block.timestamp);
        emit PointsEarned(msg.sender, pointsToAdd);

        // Начисление реферальных очков
        address ref1 = referralLevel1[msg.sender];
        if (ref1 != address(0)) {
            uint256 ref1Points = (pointsToAdd * REFERRAL_LEVEL1_PERCENT) / 100;
            referralRewards[ref1].pendingPoints += uint64(ref1Points);
            referralRewards[ref1].hasRewards = true;
            emit ReferralPointsEarned(ref1, msg.sender, ref1Points, 1);
        }
        address ref2 = referralLevel2[msg.sender];
        if (ref2 != address(0)) {
            uint256 ref2Points = (pointsToAdd * REFERRAL_LEVEL2_PERCENT) / 100;
            referralRewards[ref2].pendingPoints += uint64(ref2Points);
            referralRewards[ref2].hasRewards = true;
            emit ReferralPointsEarned(ref2, msg.sender, ref2Points, 2);
        }
    }

    // Функция для вывода реферальных вознаграждений
    function claimReferralRewards() external whenNotPaused {
        ReferralRewards storage rewards = referralRewards[msg.sender];
        require(rewards.hasRewards, "No rewards to claim");
        require(rewards.pendingPoints > 0, "No points to claim");
        uint256 pointsToClaim = rewards.pendingPoints;
        rewards.pendingPoints = 0;
        rewards.hasRewards = false;
        UserData storage user = userData[msg.sender];
        user.points += uint64(pointsToClaim);
        user.totalReferralPoints += uint64(pointsToClaim);
        emit ReferralRewardsClaimed(msg.sender, pointsToClaim);
    }

    // Проверка возможности клика
    function canClick(address user) public view returns (uint256) {
        UserData memory userInfo = userData[user];
        if (!userInfo.isRegistered) return 0;
        uint256 nextClickTime = uint256(userInfo.lastClickTime) + clickCooldown;
        return nextClickTime > block.timestamp ? nextClickTime : 0;
    }

    // Получение статистики пользователя
    function getUserStats(address user) external view returns (
        uint256 points,
        uint256 referrals,
        uint8 battlePassCount,
        bool isRegistered,
        uint256 pendingReferralRewards,
        uint256 totalReferralPoints
    ) {
        UserData memory userInfo = userData[user];
        return (
            userInfo.points,
            userInfo.referralCount,
            userInfo.battlePassCount,
            userInfo.isRegistered,
            referralRewards[user].pendingPoints,
            userInfo.totalReferralPoints
        );
    }

    // Получение статистики всех пользователей (топ-50)
    function getAllUsersStats() external view returns (
        address[] memory users,
        uint256[] memory points,
        uint256[] memory referralsCount
    ) {
        uint256 totalUsers = registeredUsersList.length;
        UserScore[] memory topScores = new UserScore[](TOP_USERS_LIMIT);
        uint256 count = 0;
        for (uint256 i = 0; i < totalUsers; i++) {
            address userAddr = registeredUsersList[i];
            uint256 userPoints = userData[userAddr].points;
            if (count < TOP_USERS_LIMIT) {
                topScores[count] = UserScore(userAddr, userPoints);
                count++;
                for (uint256 j = count - 1; j > 0; j--) {
                    if (topScores[j].points > topScores[j - 1].points) {
                        UserScore memory temp = topScores[j - 1];
                        topScores[j - 1] = topScores[j];
                        topScores[j] = temp;
                    } else {
                        break;
                    }
                }
            } else {
                if (userPoints > topScores[count - 1].points) {
                    topScores[count - 1] = UserScore(userAddr, userPoints);
                    for (uint256 j = count - 1; j > 0; j--) {
                        if (topScores[j].points > topScores[j - 1].points) {
                            UserScore memory temp = topScores[j - 1];
                            topScores[j - 1] = topScores[j];
                            topScores[j] = temp;
                        } else {
                            break;
                        }
                    }
                }
            }
        }
        users = new address[](count);
        points = new uint256[](count);
        referralsCount = new uint256[](count);
        for (uint256 i = 0; i < count; i++) {
            users[i] = topScores[i].userAddress;
            points[i] = topScores[i].points;
            referralsCount[i] = userData[topScores[i].userAddress].referralCount;
        }
        return (users, points, referralsCount);
    }

    // Получение информации о рефералах пользователя
    function getUserReferrals(address user) external view returns (
        address referrer1,
        address referrer2
    ) {
        return (referralLevel1[user], referralLevel2[user]);
    }

    // Проверка регистрации пользователя
    function checkRegistration(address user) external view returns (bool) {
        return userData[user].isRegistered;
    }

    // Покупка Battle Pass
    function buyBattlePass() external payable whenNotPaused nonReentrant {
        UserData storage user = userData[msg.sender];
        require(user.isRegistered, "User not registered");
        require(user.battlePassCount < MAX_BATTLE_PASSES, "Max battle passes reached");
        require(msg.value >= battlePassPrice, "Incorrect payment amount");
        user.battlePassCount++;
        emit BattlePassPurchased(msg.sender, user.battlePassCount);
    }

    // Проверка количества Battle Pass
    function checkBattlePass(address user) external view returns (uint8) {
        return userData[user].battlePassCount;
    }

    // Изменение цены Battle Pass
    function setBattlePassPrice(uint256 newPrice) external onlyOwner {
        battlePassPrice = newPrice;
        emit BattlePassPriceChanged(newPrice);
    }

    // Изменение времени перезарядки клика
    function setClickCooldown(uint256 newCooldown) external onlyOwner {
        require(newCooldown > 0, "Cooldown must be greater than 0");
        clickCooldown = newCooldown;
        emit ClickCooldownChanged(newCooldown);
    }

    // Вывод средств владельцем контракта
    function withdrawFunds() external onlyOwner nonReentrant {
        uint256 balance = address(this).balance;
        require(balance > 0, "No funds to withdraw");
        (bool success, ) = owner().call{value: balance}("");
        require(success, "Transfer failed");
        emit FundsWithdrawn(owner(), balance);
    }

    // Покупка авто-кликера
    function buyAutoClicker() external payable whenNotPaused nonReentrant {
        require(msg.value >= autoClickerPrice, "Insufficient funds for auto-clicker");
        require(autoClicker[msg.sender].endTimestamp == 0 || autoClicker[msg.sender].claimed, "Auto-clicker already active");
        autoClicker[msg.sender].endTimestamp = block.timestamp + AUTO_CLICKER_DURATION;
        autoClicker[msg.sender].claimed = false;
        emit AutoClickerPurchased(msg.sender, autoClicker[msg.sender].endTimestamp);
    }

    // Статус авто-кликера
    function getAutoClickerStatus(address user) external view returns (uint256, bool) {
        if(autoClicker[user].endTimestamp == 0) {
            return (0, true);
        }
        return (autoClicker[user].endTimestamp, autoClicker[user].claimed);
    }

    // Изменение цены авто-кликера
    function setAutoClickerPrice(uint256 newPrice) external onlyOwner {
        autoClickerPrice = newPrice;
    }

    // Получение продолжительности авто-кликера
    function getAutoClickerDuration() external pure returns (uint256) {
        return AUTO_CLICKER_DURATION;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @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 EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * 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 ReentrancyGuardUpgradeable is Initializable {
    // 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;

    /// @custom:storage-location erc7201:openzeppelin.storage.ReentrancyGuard
    struct ReentrancyGuardStorage {
        uint256 _status;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ReentrancyGuard")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant ReentrancyGuardStorageLocation = 0x9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f00;

    function _getReentrancyGuardStorage() private pure returns (ReentrancyGuardStorage storage $) {
        assembly {
            $.slot := ReentrancyGuardStorageLocation
        }
    }

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    function __ReentrancyGuard_init() internal onlyInitializing {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal onlyInitializing {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        $._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 {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if ($._status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        $._status = ENTERED;
    }

    function _nonReentrantAfter() private {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        // 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) {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        return $._status == ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.20;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Storage of the initializable contract.
     *
     * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
     * when using with upgradeable contracts.
     *
     * @custom:storage-location erc7201:openzeppelin.storage.Initializable
     */
    struct InitializableStorage {
        /**
         * @dev Indicates that the contract has been initialized.
         */
        uint64 _initialized;
        /**
         * @dev Indicates that the contract is in the process of being initialized.
         */
        bool _initializing;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;

    /**
     * @dev The contract is already initialized.
     */
    error InvalidInitialization();

    /**
     * @dev The contract is not initializing.
     */
    error NotInitializing();

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint64 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
     * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
     * production.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        // Cache values to avoid duplicated sloads
        bool isTopLevelCall = !$._initializing;
        uint64 initialized = $._initialized;

        // Allowed calls:
        // - initialSetup: the contract is not in the initializing state and no previous version was
        //                 initialized
        // - construction: the contract is initialized at version 1 (no reininitialization) and the
        //                 current contract is just being deployed
        bool initialSetup = initialized == 0 && isTopLevelCall;
        bool construction = initialized == 1 && address(this).code.length == 0;

        if (!initialSetup && !construction) {
            revert InvalidInitialization();
        }
        $._initialized = 1;
        if (isTopLevelCall) {
            $._initializing = true;
        }
        _;
        if (isTopLevelCall) {
            $._initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint64 version) {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing || $._initialized >= version) {
            revert InvalidInitialization();
        }
        $._initialized = version;
        $._initializing = true;
        _;
        $._initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        _checkInitializing();
        _;
    }

    /**
     * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
     */
    function _checkInitializing() internal view virtual {
        if (!_isInitializing()) {
            revert NotInitializing();
        }
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing) {
            revert InvalidInitialization();
        }
        if ($._initialized != type(uint64).max) {
            $._initialized = type(uint64).max;
            emit Initialized(type(uint64).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint64) {
        return _getInitializableStorage()._initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _getInitializableStorage()._initializing;
    }

    /**
     * @dev Returns a pointer to the storage namespace.
     */
    // solhint-disable-next-line var-name-mixedcase
    function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
        assembly {
            $.slot := INITIALIZABLE_STORAGE
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.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.
 *
 * The initial owner is set to the address provided by the deployer. 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 OwnableUpgradeable is Initializable, ContextUpgradeable {
    /// @custom:storage-location erc7201:openzeppelin.storage.Ownable
    struct OwnableStorage {
        address _owner;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300;

    function _getOwnableStorage() private pure returns (OwnableStorage storage $) {
        assembly {
            $.slot := OwnableStorageLocation
        }
    }

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    function __Ownable_init(address initialOwner) internal onlyInitializing {
        __Ownable_init_unchained(initialOwner);
    }

    function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @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) {
        OwnableStorage storage $ = _getOwnableStorage();
        return $._owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Pausable.sol)

pragma solidity ^0.8.20;

import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract PausableUpgradeable is Initializable, ContextUpgradeable {
    /// @custom:storage-location erc7201:openzeppelin.storage.Pausable
    struct PausableStorage {
        bool _paused;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Pausable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant PausableStorageLocation = 0xcd5ed15c6e187e77e9aee88184c21f4f2182ab5827cb3b7e07fbedcd63f03300;

    function _getPausableStorage() private pure returns (PausableStorage storage $) {
        assembly {
            $.slot := PausableStorageLocation
        }
    }

    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    /**
     * @dev The operation failed because the contract is paused.
     */
    error EnforcedPause();

    /**
     * @dev The operation failed because the contract is not paused.
     */
    error ExpectedPause();

    /**
     * @dev Initializes the contract in unpaused state.
     */
    function __Pausable_init() internal onlyInitializing {
        __Pausable_init_unchained();
    }

    function __Pausable_init_unchained() internal onlyInitializing {
        PausableStorage storage $ = _getPausableStorage();
        $._paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        PausableStorage storage $ = _getPausableStorage();
        return $._paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        if (paused()) {
            revert EnforcedPause();
        }
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        if (!paused()) {
            revert ExpectedPause();
        }
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        PausableStorage storage $ = _getPausableStorage();
        $._paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        PausableStorage storage $ = _getPausableStorage();
        $._paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    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;
    }
}