Contract Address Details

/* SPDX-License-Identifier: UNLICENSED */

pragma solidity ^0.8.7;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts/interfaces/IERC20.sol";

interface NFT {
    function addAirdrop(address to, uint256 quantity) external;

    function totalSupply() external view returns (uint256);

    function mint(
        address to,
        string memory nodeName,
        uint256 tier,
        uint256 value
    ) external;

    function ownerOf(uint256 tokenId) external view returns (address);

    function subValue(uint256 id, uint256 rewards) external;

    function updateValue(uint256 id, uint256 rewards) external;

    function updateRealValue(uint256 id, uint256 rewards) external;

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

    function tokenOfOwnerByIndex(
        address owner,
        uint256 index
    ) external view returns (uint256);

    function updateClaimTimestamp(uint256 id) external;

    function updateName(uint256 id, string memory nodeName) external;

    function updateTotalClaimed(uint256 id, uint256 rewards) external;

    function players(
        address user
    ) external view returns (uint256, uint256, uint256);

    function _nodes(
        uint256 id
    )
        external
        view
        returns (
            uint256,
            string memory,
            uint8,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256
        );
}

abstract contract ManageableUpgradeable is OwnableUpgradeable {
    mapping(address => bool) private _managers;
    event ManagerAdded(address indexed manager_);
    event ManagerRemoved(address indexed manager_);

    function managers(address manager_) public view virtual returns (bool) {
        return _managers[manager_];
    }

    modifier onlyManager() {
        require(_managers[_msgSender()], "Manageable: caller is not the owner");
        _;
    }

    function removeManager(address manager_) public virtual onlyOwner {
        _managers[manager_] = false;
        emit ManagerRemoved(manager_);
    }

    function addManager(address manager_) public virtual onlyOwner {
        require(
            manager_ != address(0),
            "Manageable: new owner is the zero address"
        );
        _managers[manager_] = true;
        emit ManagerAdded(manager_);
    }
}

interface ITeams {
    function getReferrer(address) external view returns (address);

    function addRewards(address user, uint256 amount) external;
}

contract Manager is Initializable, OwnableUpgradeable, ManageableUpgradeable {
    NFT public NFT_CONTRACT;
    IERC20 public TOKEN_CONTRACT;
    ITeams public TEAMS_CONTRACT;
    address public POOL;

    uint256 public startingPrice;

    struct Fees {
        uint8 create;
        uint8 compound;
        uint8 claim;
    }

    Fees public fees;

    struct FeesDistribution {
        uint8 rewards;
        uint8 upline;
    }

    FeesDistribution public createFeesDistribution;

    FeesDistribution public claimFeesDistribution;

    FeesDistribution public compoundFeesDistribution;

    uint256 public maxDeposit;
    uint256 public maxPayout;

    mapping(address => bool) public isBlacklisted;

    uint256 public maxROI;

    uint256 public cutOffTime;

    IERC20 public X_TOKEN_CONTRACT;

    function initialize(
        address TOKEN_CONTRACT_,
        address POOL_,
        address X_TOKEN_CONTRACT_
    ) public initializer {
        __Ownable_init();
        TOKEN_CONTRACT = IERC20(TOKEN_CONTRACT_);
        POOL = POOL_;
        X_TOKEN_CONTRACT = IERC20(X_TOKEN_CONTRACT_);

        startingPrice = 10e18;

        fees = Fees({create: 10, compound: 5, claim: 10});

        createFeesDistribution = FeesDistribution({rewards: 20, upline: 80});

        claimFeesDistribution = FeesDistribution({rewards: 100, upline: 0});

        compoundFeesDistribution = FeesDistribution({rewards: 20, upline: 80});

        maxDeposit = 10000e18;
        maxPayout = 365000e18;
        maxROI = 36500;
        cutOffTime = 604800;
    }

    function updateTokenContract(address value) public onlyOwner {
        TOKEN_CONTRACT = IERC20(value);
    }

    function updateXTokenContract(address value) public onlyOwner {
        X_TOKEN_CONTRACT = IERC20(value);
    }

    function updateNftContract(address value) public onlyOwner {
        addManager(value);
        NFT_CONTRACT = NFT(value);
    }

    function updateTeamsContract(address value) public onlyOwner {
        addManager(value);
        TEAMS_CONTRACT = ITeams(value);
    }

    function updatePool(address value) public onlyOwner {
        POOL = value;
    }

    function updateMaxDeposit(uint256 value) public onlyOwner {
        maxDeposit = value;
    }

    function updateMaxPayout(uint256 value) public onlyOwner {
        maxPayout = value;
    }

    function updateMaxROI(uint256 value) public onlyOwner {
        maxROI = value;
    }

    function currentPrice() public view returns (uint256) {
        return startingPrice;
    }

    function mintNode(string memory nodeName, uint256 amount) public {
        require(amount >= currentPrice(), "MINT: Amount too low");
        require(amount <= maxDeposit, "MINT: Amount too high");

        TOKEN_CONTRACT.transferFrom(_msgSender(), POOL, amount);
        uint256 fees_ = (amount * fees.create) / 100;
        amount -= fees_;
        address ref = TEAMS_CONTRACT.getReferrer(_msgSender());
        TEAMS_CONTRACT.addRewards(
            ref,
            (fees_ * createFeesDistribution.upline) / 100
        );
        NFT_CONTRACT.mint(_msgSender(), nodeName, 0, amount);
    }

    function mintNodeX(string memory nodeName, uint256 amount) public {
        require(amount >= currentPrice(), "MINT: Amount too low");
        require(amount <= maxDeposit, "MINT: Amount too high");

        X_TOKEN_CONTRACT.transferFrom(_msgSender(), POOL, amount);
        uint256 fees_ = (amount * fees.create) / 100;
        amount -= fees_;
        address ref = TEAMS_CONTRACT.getReferrer(_msgSender());
        TEAMS_CONTRACT.addRewards(
            ref,
            (fees_ * createFeesDistribution.upline) / 100
        );
        NFT_CONTRACT.mint(_msgSender(), nodeName, 0, amount);
    }

    function depositMore(uint256 id, uint256 amount) public {
        require(
            NFT_CONTRACT.ownerOf(id) == _msgSender(),
            "CLAIMALL: Not your NFT"
        );
        compound(id);
        (, , , , uint256 value, , , ) = NFT_CONTRACT._nodes(id);
        require(value + amount <= maxDeposit, "DEPOSITMORE: Amount too high");

        TOKEN_CONTRACT.transferFrom(_msgSender(), POOL, amount);

        uint256 fees_ = (amount * fees.create) / 100;
        amount -= fees_;

        if (createFeesDistribution.upline > 0) {
            address ref = TEAMS_CONTRACT.getReferrer(_msgSender());
            TEAMS_CONTRACT.addRewards(
                ref,
                (fees_ * createFeesDistribution.upline) / 100
            );
        }

        NFT_CONTRACT.updateRealValue(id, amount);
        NFT_CONTRACT.updateValue(id, amount);
    }

    function availableRewards(uint256 id) public view returns (uint256) {
        (
            ,
            ,
            uint8 tier,
            ,
            uint256 value,
            uint256 totalClaimed,
            ,
            uint256 claimTimestamp
        ) = NFT_CONTRACT._nodes(id);
        uint256 secondsElapsed = block.timestamp - claimTimestamp > cutOffTime
            ? cutOffTime
            : block.timestamp - claimTimestamp;
        uint256 rewards = (value * secondsElapsed * 100) / 86400 / 10000;
        if (totalClaimed + rewards > maxPayout) {
            rewards = maxPayout < totalClaimed ? 0 : maxPayout - totalClaimed;
        }
        if (totalClaimed + rewards > (value * maxROI) / 100) {
            rewards = (value * maxROI) / 100 < totalClaimed
                ? 0
                : (value * maxROI) / 100 - totalClaimed;
        }
        return rewards;
    }

    function availableRewardsOfUser(
        address user
    ) public view returns (uint256) {
        uint256 balance = NFT_CONTRACT.balanceOf(user);
        if (balance == 0) return 0;
        uint256 sum = 0;
        for (uint256 i = 0; i < balance; i++) {
            uint256 id = NFT_CONTRACT.tokenOfOwnerByIndex(user, i);
            sum += availableRewards(id);
        }
        return sum;
    }

    function _claimRewards(
        uint256 id,
        address recipient,
        bool skipFees
    ) private {
        if (!managers(_msgSender())) {
            require(
                NFT_CONTRACT.ownerOf(id) == _msgSender(),
                "CLAIMALL: Not your NFT"
            );
        }
        uint256 rewards_ = availableRewards(id);
        require(rewards_ > 0, "CLAIM: No rewards available yet");
        NFT_CONTRACT.updateClaimTimestamp(id);
        uint256 fees_ = 0;
        if (!skipFees) {
            fees_ = (rewards_ * fees.claim) / 100;

            if (claimFeesDistribution.upline > 0) {
                address ref = TEAMS_CONTRACT.getReferrer(_msgSender());
                TEAMS_CONTRACT.addRewards(
                    ref,
                    (fees_ * claimFeesDistribution.upline) / 100
                );
            }
        }
        NFT_CONTRACT.subValue(id, rewards_);
        NFT_CONTRACT.updateTotalClaimed(id, rewards_);
        TOKEN_CONTRACT.transferFrom(POOL, recipient, rewards_ - fees_);
    }

    function claimRewards(uint256 id) public {
        require(
            NFT_CONTRACT.balanceOf(_msgSender()) > 0,
            "CLAIMALL: You don't own a NFT"
        );
        _claimRewards(id, _msgSender(), false);
    }

    function claimRewards() public {
        uint256 balance = NFT_CONTRACT.balanceOf(_msgSender());
        require(balance > 0, "CLAIMALL: You don't own a NFT");
        for (uint256 i = 0; i < balance; i++) {
            uint256 id = NFT_CONTRACT.tokenOfOwnerByIndex(_msgSender(), i);
            _claimRewards(id, _msgSender(), false);
        }
    }

    function claimRewardsHelper(
        uint256 id,
        address recipient,
        bool skipFees
    ) public onlyManager {
        _claimRewards(id, recipient, skipFees);
    }

    function claimRewardsHelper(
        address user,
        address recipient,
        bool skipFees
    ) public onlyManager {
        uint256 balance = NFT_CONTRACT.balanceOf(user);
        require(balance > 0, "CLAIMALL: You don't own a NFT");
        for (uint256 i = 0; i < balance; i++) {
            uint256 id = NFT_CONTRACT.tokenOfOwnerByIndex(user, i);
            _claimRewards(id, recipient, skipFees);
        }
    }

    function compoundHelper(
        uint256 id,
        uint256 externalRewards,
        address user
    ) public onlyManager {
        require(NFT_CONTRACT.ownerOf(id) == user, "CH: Not your NFT");
        uint256 rewards_ = availableRewards(id);
        require(rewards_ > 0, "CH: No rewards available yet");
        _compound(id, rewards_, user);
        (, , , , uint256 value, , , ) = NFT_CONTRACT._nodes(id);
        require(value + externalRewards <= maxDeposit, "CH: Amount too high");
        NFT_CONTRACT.updateValue(id, externalRewards);
    }

    function _compound(uint256 id, uint256 rewards_, address user) internal {
        require(NFT_CONTRACT.ownerOf(id) == user, "COMPOUND: Not your NFT");
        (, , , , uint256 value, , , ) = NFT_CONTRACT._nodes(id);
        address ref = TEAMS_CONTRACT.getReferrer(user);
        uint256 fees_ = (rewards_ * fees.compound) / 100;
        rewards_ -= fees_;
        if (compoundFeesDistribution.upline > 0) {
            TEAMS_CONTRACT.addRewards(
                ref,
                (fees_ * compoundFeesDistribution.upline) / 100
            );
        }
        require(value + rewards_ <= maxDeposit, "COMPOUND: Amount too high");
        NFT_CONTRACT.updateClaimTimestamp(id);
        NFT_CONTRACT.updateTotalClaimed(id, rewards_);
        TEAMS_CONTRACT.addRewards(
            ref,
            (fees_ * createFeesDistribution.upline) / 100
        );
        NFT_CONTRACT.updateValue(id, rewards_);
    }

    function compound(uint256 id) public {
        require(
            NFT_CONTRACT.balanceOf(_msgSender()) > 0,
            "COMPOUND: You don't own a NFT"
        );
        uint256 rewards_ = availableRewards(id);
        require(rewards_ > 0, "COMPOUND: No rewards available yet");
        _compound(id, rewards_, _msgSender());
    }

    function compoundAll() public {
        uint256 balance = NFT_CONTRACT.balanceOf(_msgSender());
        require(balance > 0, "COMPOUNDALL: You don't own a NFT");
        for (uint256 i = 0; i < balance; i++) {
            uint256 id = NFT_CONTRACT.tokenOfOwnerByIndex(_msgSender(), i);
            uint256 rewards_ = availableRewards(id);
            if (rewards_ > 0) {
                _compound(id, rewards_, _msgSender());
            }
        }
    }

    // function compoundAllToSpecific(uint256 toId) public {
    //     uint256 balance = NFT_CONTRACT.balanceOf(_msgSender());
    //     require(balance > 0, "CTS: You don't own a NFT");
    //     require(
    //         NFT_CONTRACT.ownerOf(toId) == _msgSender(),
    //         "CTS: Not your NFT"
    //     );
    //     uint256 sum = 0;
    //     for (uint256 i = 0; i < balance; i++) {
    //         uint256 id = NFT_CONTRACT.tokenOfOwnerByIndex(_msgSender(), i);
    //         uint256 rewards_ = availableRewards(id);
    //         if (rewards_ > 0) {
    //             NFT_CONTRACT.updateClaimTimestamp(id);
    //         }
    //     }
    //     uint256 fees_ = (sum * fees.compound) / 100;
    //     NFT_CONTRACT.updateValue(toId, sum - fees_);
    // }

    function updateName(uint256 id, string memory name) public {
        require(
            NFT_CONTRACT.ownerOf(id) == _msgSender(),
            "CLAIMALL: Not your NFT"
        );
        NFT_CONTRACT.updateName(id, name);
    }

    function aidrop(uint256 quantity, address[] memory receivers) public {
        TOKEN_CONTRACT.transferFrom(_msgSender(), POOL, quantity);
        NFT_CONTRACT.addAirdrop(_msgSender(), quantity);

        uint256 fees_ = (quantity * fees.create) / 100;
        quantity -= fees_;

        for (uint256 i = 0; i < receivers.length; i++) {
            TEAMS_CONTRACT.addRewards(
                receivers[i],
                quantity / receivers.length
            );
        }
    }

    function getNetDeposit(address user) public view returns (int256) {
        (
            uint256 totalDeposit,
            uint256 totalAirdrop,
            uint256 totalClaimed
        ) = NFT_CONTRACT.players(user);
        return
            int256(totalDeposit) + int256(totalAirdrop) - int256(totalClaimed);
    }

    /***********************************|
  |         Owner Functions           |
  |__________________________________*/

    function setStartingPrice(uint256 value) public onlyOwner {
        startingPrice = value;
    }

    function setIsBlacklisted(address user, bool value) public onlyOwner {
        isBlacklisted[user] = value;
    }

    function setFees(
        uint8 create_,
        uint8 compound_,
        uint8 claim_
    ) public onlyOwner {
        fees = Fees({create: create_, compound: compound_, claim: claim_});
    }

    function setCreateFeesDistribution(
        uint8 rewards_,
        uint8 upline_
    ) public onlyOwner {
        createFeesDistribution = FeesDistribution({
            rewards: rewards_,
            upline: upline_
        });
    }

    function setClaimFeesDistribution(
        uint8 rewards_,
        uint8 upline_
    ) public onlyOwner {
        claimFeesDistribution = FeesDistribution({
            rewards: rewards_,
            upline: upline_
        });
    }

    function setCompoundFeesDistribution(
        uint8 rewards_,
        uint8 upline_
    ) public onlyOwner {
        compoundFeesDistribution = FeesDistribution({
            rewards: rewards_,
            upline: upline_
        });
    }

    function setCutOffTime(uint256 value) public onlyOwner {
        cutOffTime = value;
    }

    function withdrawNative() public onlyOwner {
        (bool sent, ) = payable(owner()).call{
            value: (payable(address(this))).balance
        }("");
        require(sent, "Failed to send Ether to growth");
    }

    function withdrawNativeTwo() public onlyOwner {
        payable(owner()).transfer((payable(address(this))).balance);
    }

    uint256[49] private __gap;
}
        

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../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.
 *
 * 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 OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

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

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

    function __Ownable_init_unchained() internal onlyInitializing {
        _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 anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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);
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}
          

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.1) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @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]
 * ```
 * 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 Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 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 functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _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 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _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() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @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 {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}
          

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;
import "../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;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}
          

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";
          

// SPDX-License-Identifier: MIT
// 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);

    /**
     * @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);
}