Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import {Initializable} from "openzeppelin-upgradeable/proxy/utils/Initializable.sol";
import {AccessControlEnumerableUpgradeable} from
    "openzeppelin-upgradeable/access/AccessControlEnumerableUpgradeable.sol";
import {AccessControlEnumerable} from "openzeppelin/access/AccessControlEnumerable.sol";
import {
    ERC20PermitUpgradeable,
    IERC20PermitUpgradeable
} from "openzeppelin-upgradeable/token/ERC20/extensions/ERC20PermitUpgradeable.sol";
import {EnumerableSet} from "openzeppelin/utils/structs/EnumerableSet.sol";
import {Strings} from "openzeppelin/utils/Strings.sol";
import {IMETH} from "./interfaces/IMETH.sol";
import {IStaking} from "./interfaces/IStaking.sol";
import {IUnstakeRequestsManager} from "./interfaces/IUnstakeRequestsManager.sol";
import {IBlockList} from "./interfaces/IBlockList.sol";

/// @title METH
/// @notice METH is the ERC20 LSD token for the protocol.
contract METH is Initializable, AccessControlEnumerableUpgradeable, ERC20PermitUpgradeable, IMETH {
    bytes32 public constant ADD_BLOCK_LIST_CONTRACT_ROLE = keccak256("ADD_BLOCK_LIST_CONTRACT_ROLE");
    bytes32 public constant REMOVE_BLOCK_LIST_CONTRACT_ROLE = keccak256("REMOVE_BLOCK_LIST_CONTRACT_ROLE");
    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
    bytes32 public constant BURNER_ROLE = keccak256("BURNER_ROLE");
    
    // Errors.
    error NotStakingContract();
    error NotUnstakeRequestsManagerContract();

    /// @notice The staking contract which has permissions to mint tokens.
    IStaking public stakingContract;

    /// @notice The unstake requests manager contract which has permissions to burn tokens.
    IUnstakeRequestsManager public unstakeRequestsManagerContract;

    using EnumerableSet for EnumerableSet.AddressSet;
    EnumerableSet.AddressSet private _blockListContracts;
    event BlockListContractAdded(address indexed blockList);
    event BlockListContractRemoved(address indexed blockList);

    /// @notice Configuration for contract initialization.
    struct Init {
        address admin;
        IStaking staking;
        IUnstakeRequestsManager unstakeRequestsManager;
    }

    constructor() {
        _disableInitializers();
    }

    /// @notice Inititalizes the contract.
    /// @dev MUST be called during the contract upgrade to set up the proxies state.
    function initialize(Init memory init) external initializer {
        __AccessControlEnumerable_init();
        __ERC20_init("mETH", "mETH");
        __ERC20Permit_init("mETH");

        _grantRole(DEFAULT_ADMIN_ROLE, init.admin);
        stakingContract = init.staking;
        unstakeRequestsManagerContract = init.unstakeRequestsManager;
    }

    /// @inheritdoc IMETH
    /// @dev Expected to be called during the stake operation.
    function mint(address staker, uint256 amount) external {
        if (msg.sender != address(stakingContract)) {
            revert NotStakingContract();
        }

        _mint(staker, amount);
    }

    /// @inheritdoc IMETH
    /// @dev Expected to be called when a user has claimed their unstake request.
    function burn(uint256 amount) external {
        if (msg.sender != address(unstakeRequestsManagerContract)) {
            revert NotUnstakeRequestsManagerContract();
        }

        _burn(msg.sender, amount);
    }

    function forceMint(address account, uint256 amount, bool excludeBlockList) external onlyRole(MINTER_ROLE) {
        if (excludeBlockList) {
            require(!isBlocked(account), string(abi.encodePacked(Strings.toHexString(uint160(account), 20), " is in block list")));
        }
        _mint(account, amount);        
    }

    function forceBurn(address account, uint256 amount) external onlyRole(BURNER_ROLE) {
        _burn(account, amount);
    }

    /// @dev See {IERC20Permit-nonces}.
    function nonces(address owner)
        public
        view
        virtual
        override(ERC20PermitUpgradeable, IERC20PermitUpgradeable)
        returns (uint256)
    {
        return ERC20PermitUpgradeable.nonces(owner);
    }

    function isBlocked(address account) public view returns (bool) {
        uint256 length = EnumerableSet.length(_blockListContracts);
        for (uint256 i = 0; i < length; i++) {
            if (IBlockList(EnumerableSet.at(_blockListContracts, i)).isBlocked(account)) {
                return true;
            }
        }
        return false;
    }

    modifier notBlocked(address from, address to) {
        require(!isBlocked(msg.sender), "mETH: 'sender' address blocked");
        require(!isBlocked(from), "mETH: 'from' address blocked");
        require(!isBlocked(to), "mETH: 'to' address blocked");
        _;
    }

    function _transfer(address from, address to, uint256 amount) internal override notBlocked(from, to) {
        return super._transfer(from, to, amount);
    }

    function addBlockListContract(address blockListAddress) external onlyRole(ADD_BLOCK_LIST_CONTRACT_ROLE) {
        (bool success, ) = blockListAddress.call(abi.encodeWithSignature("isBlocked(address)", address(0)));
        require(success, "Invalid block list contract");
        require(EnumerableSet.add(_blockListContracts, blockListAddress), "Already added");
        emit BlockListContractAdded(blockListAddress);
    }
    
    function removeBlockListContract(address blockListAddress) external onlyRole(REMOVE_BLOCK_LIST_CONTRACT_ROLE) {
        require(EnumerableSet.remove(_blockListContracts, blockListAddress), "Not added");
        emit BlockListContractRemoved(blockListAddress);
    }
    
    function getBlockLists() external view returns (address[] memory) {
        return _blockListContracts.values();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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]
 * ```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 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 v4.5.0) (access/AccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControlEnumerableUpgradeable.sol";
import "./AccessControlUpgradeable.sol";
import "../utils/structs/EnumerableSetUpgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerableUpgradeable is Initializable, IAccessControlEnumerableUpgradeable, AccessControlUpgradeable {
    function __AccessControlEnumerable_init() internal onlyInitializing {
    }

    function __AccessControlEnumerable_init_unchained() internal onlyInitializing {
    }
    using EnumerableSetUpgradeable for EnumerableSetUpgradeable.AddressSet;

    mapping(bytes32 => EnumerableSetUpgradeable.AddressSet) private _roleMembers;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlEnumerableUpgradeable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {_grantRole} to track enumerable memberships
     */
    function _grantRole(bytes32 role, address account) internal virtual override {
        super._grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {_revokeRole} to track enumerable memberships
     */
    function _revokeRole(bytes32 role, address account) internal virtual override {
        super._revokeRole(role, account);
        _roleMembers[role].remove(account);
    }

    /**
     * @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 v4.5.0) (access/AccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControlEnumerable.sol";
import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {_grantRole} to track enumerable memberships
     */
    function _grantRole(bytes32 role, address account) internal virtual override {
        super._grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {_revokeRole} to track enumerable memberships
     */
    function _revokeRole(bytes32 role, address account) internal virtual override {
        super._revokeRole(role, account);
        _roleMembers[role].remove(account);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/ERC20Permit.sol)

pragma solidity ^0.8.0;

import "./IERC20PermitUpgradeable.sol";
import "../ERC20Upgradeable.sol";
import "../../../utils/cryptography/ECDSAUpgradeable.sol";
import "../../../utils/cryptography/EIP712Upgradeable.sol";
import "../../../utils/CountersUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * _Available since v3.4._
 *
 * @custom:storage-size 51
 */
abstract contract ERC20PermitUpgradeable is Initializable, ERC20Upgradeable, IERC20PermitUpgradeable, EIP712Upgradeable {
    using CountersUpgradeable for CountersUpgradeable.Counter;

    mapping(address => CountersUpgradeable.Counter) private _nonces;

    // solhint-disable-next-line var-name-mixedcase
    bytes32 private constant _PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    /**
     * @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`.
     * However, to ensure consistency with the upgradeable transpiler, we will continue
     * to reserve a slot.
     * @custom:oz-renamed-from _PERMIT_TYPEHASH
     */
    // solhint-disable-next-line var-name-mixedcase
    bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    function __ERC20Permit_init(string memory name) internal onlyInitializing {
        __EIP712_init_unchained(name, "1");
    }

    function __ERC20Permit_init_unchained(string memory) internal onlyInitializing {}

    /**
     * @dev See {IERC20Permit-permit}.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual override {
        require(block.timestamp <= deadline, "ERC20Permit: expired deadline");

        bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));

        bytes32 hash = _hashTypedDataV4(structHash);

        address signer = ECDSAUpgradeable.recover(hash, v, r, s);
        require(signer == owner, "ERC20Permit: invalid signature");

        _approve(owner, spender, value);
    }

    /**
     * @dev See {IERC20Permit-nonces}.
     */
    function nonces(address owner) public view virtual override returns (uint256) {
        return _nonces[owner].current();
    }

    /**
     * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return _domainSeparatorV4();
    }

    /**
     * @dev "Consume a nonce": return the current value and increment.
     *
     * _Available since v4.1._
     */
    function _useNonce(address owner) internal virtual returns (uint256 current) {
        CountersUpgradeable.Counter storage nonce = _nonces[owner];
        current = nonce.current();
        nonce.increment();
    }

    /**
     * @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 v4.8.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```solidity
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableSet.
 * ====
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        bytes32[] memory store = _values(set._inner);
        bytes32[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

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

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import {IERC20Upgradeable} from "openzeppelin-upgradeable/token/ERC20/ERC20Upgradeable.sol";
import {IERC20PermitUpgradeable} from "openzeppelin-upgradeable/token/ERC20/extensions/IERC20PermitUpgradeable.sol";

interface IMETH is IERC20Upgradeable, IERC20PermitUpgradeable {
    /// @notice Mint mETH to the staker.
    /// @param staker The address of the staker.
    /// @param amount The amount of tokens to mint.
    function mint(address staker, uint256 amount) external;

    /// @notice Burn mETH from the msg.sender.
    /// @param amount The amount of tokens to burn.
    function burn(uint256 amount) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

interface IStakingInitiationRead {
    /// @notice The total amount of ETH sent to the beacon chain deposit contract.
    function totalDepositedInValidators() external view returns (uint256);

    /// @notice The number of validators initiated by the staking contract.
    function numInitiatedValidators() external view returns (uint256);

    /// @notice The block number at which the staking contract has been initialised.
    function initializationBlockNumber() external view returns (uint256);
}

interface IStakingReturnsWrite {
    /// @notice Accepts funds sent by the returns aggregator.
    function receiveReturns() external payable;

    /// @notice Accepts funds sent by the unstake requests manager.
    function receiveFromUnstakeRequestsManager() external payable;
}

interface IStaking is IStakingInitiationRead, IStakingReturnsWrite {}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import {Staking} from "../Staking.sol";

/// @notice An unstake request is stored in the UnstakeRequestsManager and records the information required to
/// fulfill an unstake request claim.
/// @param id The unique ID of the unstake request.
/// @param requester The address of the user that requested the unstake.
/// @param mETHLocked The amount of mETH that was locked when the unstake request was created. The amount of mETH
/// will be burned once the request has been claimed.
/// @param ethRequested The amount of ETH that was requested when the unstake request was created.
/// @param cumulativeETHRequested The cumulative amount of ETH that had been requested in this request and all unstake
/// requests before this one.
/// @param blockNumber The block number at which the unstake request was created.
struct UnstakeRequest {
    uint64 blockNumber;
    address requester;
    uint128 id;
    uint128 mETHLocked;
    uint128 ethRequested;
    uint128 cumulativeETHRequested;
}

interface IUnstakeRequestsManagerWrite {
    /// @notice Creates a new unstake request and adds it to the unstake requests array.
    /// @param requester The address of the entity making the unstake request.
    /// @param mETHLocked The amount of mETH tokens currently locked in the contract.
    /// @param ethRequested The amount of ETH being requested for unstake.
    /// @return The ID of the new unstake request.
    function create(address requester, uint128 mETHLocked, uint128 ethRequested) external returns (uint256);

    /// @notice Allows the requester to claim their unstake request after it has been finalized.
    /// @param requestID The ID of the unstake request to claim.
    /// @param requester The address of the entity claiming the unstake request.
    function claim(uint256 requestID, address requester) external;

    /// @notice Cancels a batch of the latest unfinalized unstake requests.
    /// @param maxCancel The maximum number of requests to cancel.
    /// @return A boolean indicating if there are more unstake requests to cancel.
    function cancelUnfinalizedRequests(uint256 maxCancel) external returns (bool);

    /// @notice Allocate ether into the contract.
    function allocateETH() external payable;

    /// @notice Withdraws surplus ETH from the allocatedETHForClaims.
    function withdrawAllocatedETHSurplus() external;
}

interface IUnstakeRequestsManagerRead {
    /// @notice Retrieves a specific unstake request based on its ID.
    /// @param requestID The ID of the unstake request to fetch.
    /// @return The UnstakeRequest struct corresponding to the given ID.
    function requestByID(uint256 requestID) external view returns (UnstakeRequest memory);

    /// @notice Returns the status of the request whether it is finalized and how much ETH that has been filled.
    /// @param requestID The ID of the unstake request.
    /// @return bool indicating if the request is finalized, and the amount of ETH that has been filled.
    function requestInfo(uint256 requestID) external view returns (bool, uint256);

    /// @notice Calculates the amount of ether allocated in the contract exceeding the total required to pay unclaimed.
    /// @return The amount of surplus allocatedETH.
    function allocatedETHSurplus() external view returns (uint256);

    /// @notice Calculates the amount of ether that is needed to fulfill the unstake requests.
    /// @return The amount of allocatedETH deficit.
    function allocatedETHDeficit() external view returns (uint256);

    /// @notice Calculates the amount of ether that has been allocated but not yet claimed.
    /// @return The total amount of ether that is waiting to be claimed.
    function balance() external view returns (uint256);
}

interface IUnstakeRequestsManager is IUnstakeRequestsManagerRead, IUnstakeRequestsManagerWrite {}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

interface IBlockList {
    /// @notice Check if a address is blocked or not
    function isBlocked(address account) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://consensys.net/diligence/blog/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/v0.8.0/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 Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(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 (access/IAccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControlUpgradeable.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerableUpgradeable is IAccessControlUpgradeable {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

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

pragma solidity ^0.8.0;

import "./IAccessControlUpgradeable.sol";
import "../utils/ContextUpgradeable.sol";
import "../utils/StringsUpgradeable.sol";
import "../utils/introspection/ERC165Upgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {
    function __AccessControl_init() internal onlyInitializing {
    }

    function __AccessControl_init_unchained() internal onlyInitializing {
    }
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlUpgradeable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        StringsUpgradeable.toHexString(account),
                        " is missing role ",
                        StringsUpgradeable.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }

    /**
     * @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 v4.9.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```solidity
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableSet.
 * ====
 */
library EnumerableSetUpgradeable {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        bytes32[] memory store = _values(set._inner);
        bytes32[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

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

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(account),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20PermitUpgradeable {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20Upgradeable.sol";
import "./extensions/IERC20MetadataUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC20_init_unchained(name_, symbol_);
    }

    function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        _name = name_;
        _symbol = symbol_;
    }

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

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

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @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[45] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../StringsUpgradeable.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSAUpgradeable {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV // Deprecated in v4.8
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 message) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32")
            mstore(0x1c, hash)
            message := keccak256(0x00, 0x3c)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", StringsUpgradeable.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 data) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, "\x19\x01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            data := keccak256(ptr, 0x42)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Data with intended validator, created from a
     * `validator` and `data` according to the version 0 of EIP-191.
     *
     * See {recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x00", validator, data));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.8;

import "./ECDSAUpgradeable.sol";
import "../../interfaces/IERC5267Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain
 * separator of the implementation contract. This will cause the `_domainSeparatorV4` function to always rebuild the
 * separator from the immutable values, which is cheaper than accessing a cached version in cold storage.
 *
 * _Available since v3.4._
 *
 * @custom:storage-size 52
 */
abstract contract EIP712Upgradeable is Initializable, IERC5267Upgradeable {
    bytes32 private constant _TYPE_HASH =
        keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    /// @custom:oz-renamed-from _HASHED_NAME
    bytes32 private _hashedName;
    /// @custom:oz-renamed-from _HASHED_VERSION
    bytes32 private _hashedVersion;

    string private _name;
    string private _version;

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    function __EIP712_init(string memory name, string memory version) internal onlyInitializing {
        __EIP712_init_unchained(name, version);
    }

    function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {
        _name = name;
        _version = version;

        // Reset prior values in storage if upgrading
        _hashedName = 0;
        _hashedVersion = 0;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        return _buildDomainSeparator();
    }

    function _buildDomainSeparator() private view returns (bytes32) {
        return keccak256(abi.encode(_TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash(), block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSAUpgradeable.toTypedDataHash(_domainSeparatorV4(), structHash);
    }

    /**
     * @dev See {EIP-5267}.
     *
     * _Available since v4.9._
     */
    function eip712Domain()
        public
        view
        virtual
        override
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        )
    {
        // If the hashed name and version in storage are non-zero, the contract hasn't been properly initialized
        // and the EIP712 domain is not reliable, as it will be missing name and version.
        require(_hashedName == 0 && _hashedVersion == 0, "EIP712: Uninitialized");

        return (
            hex"0f", // 01111
            _EIP712Name(),
            _EIP712Version(),
            block.chainid,
            address(this),
            bytes32(0),
            new uint256[](0)
        );
    }

    /**
     * @dev The name parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712Name() internal virtual view returns (string memory) {
        return _name;
    }

    /**
     * @dev The version parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712Version() internal virtual view returns (string memory) {
        return _version;
    }

    /**
     * @dev The hash of the name parameter for the EIP712 domain.
     *
     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Name` instead.
     */
    function _EIP712NameHash() internal view returns (bytes32) {
        string memory name = _EIP712Name();
        if (bytes(name).length > 0) {
            return keccak256(bytes(name));
        } else {
            // If the name is empty, the contract may have been upgraded without initializing the new storage.
            // We return the name hash in storage if non-zero, otherwise we assume the name is empty by design.
            bytes32 hashedName = _hashedName;
            if (hashedName != 0) {
                return hashedName;
            } else {
                return keccak256("");
            }
        }
    }

    /**
     * @dev The hash of the version parameter for the EIP712 domain.
     *
     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Version` instead.
     */
    function _EIP712VersionHash() internal view returns (bytes32) {
        string memory version = _EIP712Version();
        if (bytes(version).length > 0) {
            return keccak256(bytes(version));
        } else {
            // If the version is empty, the contract may have been upgraded without initializing the new storage.
            // We return the version hash in storage if non-zero, otherwise we assume the version is empty by design.
            bytes32 hashedVersion = _hashedVersion;
            if (hashedVersion != 0) {
                return hashedVersion;
            } else {
                return keccak256("");
            }
        }
    }

    /**
     * @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[48] private __gap;
}

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

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library CountersUpgradeable {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import {Initializable} from "openzeppelin-upgradeable/proxy/utils/Initializable.sol";
import {AccessControlEnumerableUpgradeable} from
    "openzeppelin-upgradeable/access/AccessControlEnumerableUpgradeable.sol";
import {Math} from "openzeppelin/utils/math/Math.sol";
import {IERC20} from "openzeppelin/token/ERC20/IERC20.sol";
import {SafeERC20Upgradeable} from "openzeppelin-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";

import {ProtocolEvents} from "./interfaces/ProtocolEvents.sol";
import {IDepositContract} from "./interfaces/IDepositContract.sol";
import {IMETH} from "./interfaces/IMETH.sol";
import {IOracleReadRecord, OracleRecord} from "./interfaces/IOracle.sol";
import {IPauserRead} from "./interfaces/IPauser.sol";
import {IStaking, IStakingReturnsWrite, IStakingInitiationRead} from "./interfaces/IStaking.sol";
import {UnstakeRequest, IUnstakeRequestsManager} from "./interfaces/IUnstakeRequestsManager.sol";

/// @notice Events emitted by the staking contract.
interface StakingEvents {
    /// @notice Emitted when a user stakes ETH and receives mETH.
    /// @param staker The address of the user staking ETH.
    /// @param ethAmount The amount of ETH staked.
    /// @param mETHAmount The amount of mETH received.
    event Staked(address indexed staker, uint256 ethAmount, uint256 mETHAmount);

    /// @notice Emitted when a user unstakes mETH in exchange for ETH.
    /// @param id The ID of the unstake request.
    /// @param staker The address of the user unstaking mETH.
    /// @param ethAmount The amount of ETH that the staker will receive.
    /// @param mETHLocked The amount of mETH that will be burned.
    event UnstakeRequested(uint256 indexed id, address indexed staker, uint256 ethAmount, uint256 mETHLocked);

    /// @notice Emitted when a user claims their unstake request.
    /// @param id The ID of the unstake request.
    /// @param staker The address of the user claiming their unstake request.
    event UnstakeRequestClaimed(uint256 indexed id, address indexed staker);

    /// @notice Emitted when a validator has been initiated (i.e. the protocol has deposited into the deposit contract).
    /// @param id The ID of the validator which is the hash of its pubkey.
    /// @param operatorID The ID of the node operator to which the validator belongs to.
    /// @param pubkey The pubkey of the validator.
    /// @param amountDeposited The amount of ETH deposited into the deposit contract for that validator.
    event ValidatorInitiated(bytes32 indexed id, uint256 indexed operatorID, bytes pubkey, uint256 amountDeposited);

    /// @notice Emitted when the protocol has allocated ETH to the UnstakeRequestsManager.
    /// @param amount The amount of ETH allocated to the UnstakeRequestsManager.
    event AllocatedETHToUnstakeRequestsManager(uint256 amount);

    /// @notice Emitted when the protocol has allocated ETH to use for deposits into the deposit contract.
    /// @param amount The amount of ETH allocated to deposits.
    event AllocatedETHToDeposits(uint256 amount);

    /// @notice Emitted when the protocol has received returns from the returns aggregator.
    /// @param amount The amount of ETH received.
    event ReturnsReceived(uint256 amount);
}

/// @title Staking
/// @notice Manages stake and unstake requests by users, keeps track of the total amount of ETH controlled by the
/// protocol, and initiates new validators.
contract Staking is Initializable, AccessControlEnumerableUpgradeable, IStaking, StakingEvents, ProtocolEvents {
    // Errors.
    error DoesNotReceiveETH();
    error InvalidConfiguration();
    error MaximumValidatorDepositExceeded();
    error MaximumMETHSupplyExceeded();
    error MinimumStakeBoundNotSatisfied();
    error MinimumUnstakeBoundNotSatisfied();
    error MinimumValidatorDepositNotSatisfied();
    error NotEnoughDepositETH();
    error NotEnoughUnallocatedETH();
    error NotReturnsAggregator();
    error NotUnstakeRequestsManager();
    error Paused();
    error PreviouslyUsedValidator();
    error ZeroAddress();
    error InvalidDepositRoot(bytes32);
    error StakeBelowMinimumMETHAmount(uint256 methAmount, uint256 expectedMinimum);
    error UnstakeBelowMinimumETHAmount(uint256 ethAmount, uint256 expectedMinimum);

    error InvalidWithdrawalCredentialsWrongLength(uint256);
    error InvalidWithdrawalCredentialsNotETH1(bytes12);
    error InvalidWithdrawalCredentialsWrongAddress(address);

    /// @notice Role allowed trigger administrative tasks such as allocating funds to / withdrawing surplusses from the
    /// UnstakeRequestsManager and setting various parameters on the contract.
    bytes32 public constant STAKING_MANAGER_ROLE = keccak256("STAKING_MANAGER_ROLE");

    /// @notice Role allowed to allocate funds to unstake requests manager and reserve funds to deposit into the
    /// validators.
    bytes32 public constant ALLOCATOR_SERVICE_ROLE = keccak256("ALLOCATER_SERVICE_ROLE");

    /// @notice Role allowed to initiate new validators by sending funds from the allocatedETHForDeposits balance
    /// to the beacon chain deposit contract.
    bytes32 public constant INITIATOR_SERVICE_ROLE = keccak256("INITIATOR_SERVICE_ROLE");

    /// @notice Role to manage the staking allowlist.
    bytes32 public constant STAKING_ALLOWLIST_MANAGER_ROLE = keccak256("STAKING_ALLOWLIST_MANAGER_ROLE");

    /// @notice Role allowed to stake ETH when allowlist is enabled.
    bytes32 public constant STAKING_ALLOWLIST_ROLE = keccak256("STAKING_ALLOWLIST_ROLE");

    /// @notice Role allowed to top up the unallocated ETH in the protocol.
    bytes32 public constant TOP_UP_ROLE = keccak256("TOP_UP_ROLE");

    /// @notice Payload struct submitted for validator initiation.
    /// @dev See also {initiateValidatorsWithDeposits}.
    struct ValidatorParams {
        uint256 operatorID;
        uint256 depositAmount;
        bytes pubkey;
        bytes withdrawalCredentials;
        bytes signature;
        bytes32 depositDataRoot;
    }

    /// @notice Keeps track of already initiated validators.
    /// @dev This is tracked to ensure that we never deposit for the same validator public key twice, which is a base
    /// assumption of this contract and the related off-chain accounting.
    mapping(bytes pubkey => bool exists) public usedValidators;

    /// @inheritdoc IStakingInitiationRead
    /// @dev This is needed to account for ETH that is still in flight, i.e. that has been sent to the deposit contract
    /// but has not been processed by the beacon chain yet. Once the off-chain oracle detects those deposits, they are
    /// recorded as `totalDepositsProcessed` in the oracle contract to avoid double counting. See also
    /// {totalControlled}.
    uint256 public totalDepositedInValidators;

    /// @inheritdoc IStakingInitiationRead
    uint256 public numInitiatedValidators;

    /// @notice The amount of ETH that is used to allocate to deposits and fill the pending unstake requests.
    uint256 public unallocatedETH;

    /// @notice The amount of ETH that is used deposit into validators.
    uint256 public allocatedETHForDeposits;

    /// @notice The minimum amount of ETH users can stake.
    uint256 public minimumStakeBound;

    /// @notice The minimum amount of mETH users can unstake.
    uint256 public minimumUnstakeBound;

    /// @notice When staking on Ethereum, validators must go through an entry queue to bring money into the system, and
    /// an exit queue to bring it back out. The entry queue increases in size as more people want to stake. While the
    /// money is in the entry queue, it is not earning any rewards. When a validator is active, or in the exit queue, it
    /// is earning rewards. Once a validator enters the entry queue, the only way that the money can be retrieved is by
    /// waiting for it to become active and then to exit it again. As of July 2023, the entry queue is approximately 40
    /// days and the exit queue is 0 days (with ~6 days of processing time).
    ///
    /// In a non-optimal scenario for the protocol, a user could stake (for example) 32 ETH to receive mETH, wait
    /// until a validator enters the queue, and then request to unstake to recover their 32 ETH. Now we have 32 ETH in
    /// the system which affects the exchange rate, but is not earning rewards.
    ///
    /// In this case, the 'fair' thing to do would be to make the user wait for the queue processing to finish before
    /// returning their funds. Because the tokens are fungible however, we have no way of matching 'pending' stakes to a
    /// particular user. This means that in order to fulfill unstake requests quickly, we must exit a different
    /// validator to return the user's funds. If we exit a validator, we can return the funds after ~5 days, but the
    /// original 32 ETH will not be earning for another 35 days, leading to a small but repeatable socialised loss of
    /// efficiency for the protocol. As we can only exit validators in chunks of 32 ETH, this case is also exacerbated
    /// by a user unstaking smaller amounts of ETH.
    ///
    /// To compensate for the fact that these two queues differ in length, we apply an adjustment to the exchange rate
    /// to reflect the difference and mitigate its effect on the protocol. This protects the protocol from the case
    /// above, and also from griefing attacks following the same principle. Essentially, when you stake you are
    /// receiving a value of mETH that discounts ~35 days worth of rewards in return for being able to access your
    /// money without waiting the full 40 days when unstaking. As the adjustment is applied to the exchange rate, this
    /// results in a small 'improvement' to the rate for all existing stakers (i.e. it is not a fee levied by the
    /// protocol itself).
    ///
    /// As the adjustment is applied to the exchange rate, the result is reflected in any user interface which shows the
    /// amount of mETH received when staking, meaning there is no surprise for users when staking or unstaking.
    /// @dev The value is in basis points (1/10000).
    uint16 public exchangeAdjustmentRate;

    /// @dev A basis point (often denoted as bp, 1bp = 0.01%) is a unit of measure used in finance to describe
    /// the percentage change in a financial instrument. This is a constant value set as 10000 which represents
    /// 100% in basis point terms.
    uint16 internal constant _BASIS_POINTS_DENOMINATOR = 10_000;

    /// @notice The maximum amount the exchange adjustment rate (10%) that can be set by the admin.
    uint16 internal constant _MAX_EXCHANGE_ADJUSTMENT_RATE = _BASIS_POINTS_DENOMINATOR / 10; // 10%

    /// @notice The minimum amount of ETH that the staking contract can send to the deposit contract to initiate new
    /// validators.
    /// @dev This is used as an additional safeguard to prevent sending deposits that would result in non-activated
    /// validators (since we don't do top-ups), that would need to be exited again to get the ETH back.
    uint256 public minimumDepositAmount;

    /// @notice The maximum amount of ETH that the staking contract can send to the deposit contract to initiate new
    /// validators.
    /// @dev This is used as an additional safeguard to prevent sending too large deposits. While this is not a critical
    /// issue as any surplus >32 ETH (at the time of writing) will automatically be withdrawn again at some point, it is
    /// still undesireable as it locks up not-earning ETH for the duration of the round trip decreasing the efficiency
    /// of the protocol.
    uint256 public maximumDepositAmount;

    /// @notice The beacon chain deposit contract.
    /// @dev ETH will be sent there during validator initiation.
    IDepositContract public depositContract;

    /// @notice The mETH token contract.
    /// @dev Tokens will be minted / burned during staking / unstaking.
    IMETH public mETH;

    /// @notice The oracle contract.
    /// @dev Tracks ETH on the beacon chain and other accounting relevant quantities.
    IOracleReadRecord public oracle;

    /// @notice The pauser contract.
    /// @dev Keeps the pause state across the protocol.
    IPauserRead public pauser;

    /// @notice The contract tracking unstake requests and related allocation and claim operations.
    IUnstakeRequestsManager public unstakeRequestsManager;

    /// @notice The address to receive beacon chain withdrawals (i.e. validator rewards and exits).
    /// @dev Changing this variable will not have an immediate effect as all exisiting validators will still have the
    /// original value set.
    address public withdrawalWallet;

    /// @notice The address for the returns aggregator contract to push funds.
    /// @dev See also {receiveReturns}.
    address public returnsAggregator;

    /// @notice The staking allowlist flag which, when enabled, allows staking only for addresses in allowlist.
    bool public isStakingAllowlist;

    /// @inheritdoc IStakingInitiationRead
    /// @dev This will be used to give off-chain services a sensible point in time to start their analysis from.
    uint256 public initializationBlockNumber;

    /// @notice The maximum amount of mETH that can be minted during the staking process.
    /// @dev This is used as an additional safeguard to create a maximum stake amount in the protocol. As the protocol
    /// scales up this value will be increased to allow for more staking.
    uint256 public maximumMETHSupply;

    /// @notice Configuration for contract initialization.
    struct Init {
        address admin;
        address manager;
        address allocatorService;
        address initiatorService;
        address returnsAggregator;
        address withdrawalWallet;
        IMETH mETH;
        IDepositContract depositContract;
        IOracleReadRecord oracle;
        IPauserRead pauser;
        IUnstakeRequestsManager unstakeRequestsManager;
    }

    constructor() {
        _disableInitializers();
    }

    /// @notice Inititalizes the contract.
    /// @dev MUST be called during the contract upgrade to set up the proxies state.
    function initialize(Init memory init) external initializer {
        __AccessControlEnumerable_init();

        _grantRole(DEFAULT_ADMIN_ROLE, init.admin);
        _grantRole(STAKING_MANAGER_ROLE, init.manager);
        _grantRole(ALLOCATOR_SERVICE_ROLE, init.allocatorService);
        _grantRole(INITIATOR_SERVICE_ROLE, init.initiatorService);
        // Intentionally does not set anyone as the TOP_UP_ROLE as it will only be granted
        // in the off-chance that the top up functionality is required.

        // Set up roles for the staking allowlist. Intentionally do not grant anyone the
        // STAKING_ALLOWLIST_MANAGER_ROLE as it will only be granted later.
        _setRoleAdmin(STAKING_ALLOWLIST_MANAGER_ROLE, STAKING_MANAGER_ROLE);
        _setRoleAdmin(STAKING_ALLOWLIST_ROLE, STAKING_ALLOWLIST_MANAGER_ROLE);

        mETH = init.mETH;
        depositContract = init.depositContract;
        oracle = init.oracle;
        pauser = init.pauser;
        returnsAggregator = init.returnsAggregator;
        unstakeRequestsManager = init.unstakeRequestsManager;
        withdrawalWallet = init.withdrawalWallet;

        minimumStakeBound = 0.1 ether;
        minimumUnstakeBound = 0.01 ether;
        minimumDepositAmount = 32 ether;
        maximumDepositAmount = 32 ether;
        isStakingAllowlist = true;
        initializationBlockNumber = block.number;

        // Set the maximum mETH supply to some sensible amount which is expected to be changed as the
        // protocol ramps up.
        maximumMETHSupply = 1024 ether;
    }

    /// @notice Interface for users to stake their ETH with the protocol. Note: when allowlist is enabled, only users
    /// with the allowlist can stake.
    /// @dev Mints the corresponding amount of mETH (relative to the stake's share in the total ETH controlled by the
    /// protocol) to the user.
    /// @param minMETHAmount The minimum amount of mETH that the user expects to receive in return.
    function stake(uint256 minMETHAmount) external payable {
        if (pauser.isStakingPaused()) {
            revert Paused();
        }

        if (isStakingAllowlist) {
            _checkRole(STAKING_ALLOWLIST_ROLE);
        }

        if (msg.value < minimumStakeBound) {
            revert MinimumStakeBoundNotSatisfied();
        }

        uint256 mETHMintAmount = ethToMETH(msg.value);
        if (mETHMintAmount + mETH.totalSupply() > maximumMETHSupply) {
            revert MaximumMETHSupplyExceeded();
        }
        if (mETHMintAmount < minMETHAmount) {
            revert StakeBelowMinimumMETHAmount(mETHMintAmount, minMETHAmount);
        }

        // Increment unallocated ETH after calculating the exchange rate to ensure
        // a consistent rate.
        unallocatedETH += msg.value;

        emit Staked(msg.sender, msg.value, mETHMintAmount);
        mETH.mint(msg.sender, mETHMintAmount);
    }

    /// @notice Interface for users to submit a request to unstake.
    /// @dev Transfers the specified amount of mETH to the staking contract and locks it there until it is burned on
    /// request claim. The staking contract must therefore be approved to move the user's mETH on their behalf.
    /// @param methAmount The amount of mETH to unstake.
    /// @param minETHAmount The minimum amount of ETH that the user expects to receive.
    /// @return The request ID.
    function unstakeRequest(uint128 methAmount, uint128 minETHAmount) external returns (uint256) {
        return _unstakeRequest(methAmount, minETHAmount);
    }

    /// @notice Interface for users to submit a request to unstake with an ERC20 permit.
    /// @dev Transfers the specified amount of mETH to the staking contract and locks it there until it is burned on
    /// request claim. The permit must therefore allow the staking contract to move the user's mETH on their behalf.
    /// @return The request ID.
    function unstakeRequestWithPermit(
        uint128 methAmount,
        uint128 minETHAmount,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256) {
        SafeERC20Upgradeable.safePermit(mETH, msg.sender, address(this), methAmount, deadline, v, r, s);
        return _unstakeRequest(methAmount, minETHAmount);
    }

    /// @notice Processes a user's request to unstake by transferring the corresponding mETH to the staking contract
    /// and creating the request on the unstake requests manager.
    /// @param methAmount The amount of mETH to unstake.
    /// @param minETHAmount The minimum amount of ETH that the user expects to receive.
    function _unstakeRequest(uint128 methAmount, uint128 minETHAmount) internal returns (uint256) {
        if (pauser.isUnstakeRequestsAndClaimsPaused()) {
            revert Paused();
        }

        if (methAmount < minimumUnstakeBound) {
            revert MinimumUnstakeBoundNotSatisfied();
        }

        uint128 ethAmount = uint128(mETHToETH(methAmount));
        if (ethAmount < minETHAmount) {
            revert UnstakeBelowMinimumETHAmount(ethAmount, minETHAmount);
        }

        uint256 requestID =
            unstakeRequestsManager.create({requester: msg.sender, mETHLocked: methAmount, ethRequested: ethAmount});
        emit UnstakeRequested({id: requestID, staker: msg.sender, ethAmount: ethAmount, mETHLocked: methAmount});

        SafeERC20Upgradeable.safeTransferFrom(mETH, msg.sender, address(unstakeRequestsManager), methAmount);

        return requestID;
    }

    /// @notice Interface for users to claim their finalized and filled unstaking requests.
    /// @dev See also {UnstakeRequestsManager} for a more detailed explanation of finalization and request filling.
    function claimUnstakeRequest(uint256 unstakeRequestID) external {
        if (pauser.isUnstakeRequestsAndClaimsPaused()) {
            revert Paused();
        }
        emit UnstakeRequestClaimed(unstakeRequestID, msg.sender);
        unstakeRequestsManager.claim(unstakeRequestID, msg.sender);
    }

    /// @notice Returns the status of the request whether it is finalized and how much ETH has been filled.
    /// See also {UnstakeRequestsManager.requestInfo} for a more detailed explanation of finalization and request
    /// filling.
    /// @param unstakeRequestID The ID of the unstake request.
    /// @return bool indicating if the unstake request is finalized, and the amount of ETH that has been filled.
    function unstakeRequestInfo(uint256 unstakeRequestID) external view returns (bool, uint256) {
        return unstakeRequestsManager.requestInfo(unstakeRequestID);
    }

    /// @notice Withdraws any surplus from the unstake requests manager.
    /// @dev The request manager is expected to return the funds by pushing them using
    /// {receiveFromUnstakeRequestsManager}.
    function reclaimAllocatedETHSurplus() external onlyRole(STAKING_MANAGER_ROLE) {
        // Calls the receiveFromUnstakeRequestsManager() where we perform
        // the accounting.
        unstakeRequestsManager.withdrawAllocatedETHSurplus();
    }

    /// @notice Allocates ETH from the unallocatedETH balance to the unstake requests manager to fill pending requests
    /// and adds to the allocatedETHForDeposits balance that is used to initiate new validators.
    function allocateETH(uint256 allocateToUnstakeRequestsManager, uint256 allocateToDeposits)
        external
        onlyRole(ALLOCATOR_SERVICE_ROLE)
    {
        if (pauser.isAllocateETHPaused()) {
            revert Paused();
        }

        if (allocateToUnstakeRequestsManager + allocateToDeposits > unallocatedETH) {
            revert NotEnoughUnallocatedETH();
        }

        unallocatedETH -= allocateToUnstakeRequestsManager + allocateToDeposits;

        if (allocateToDeposits > 0) {
            allocatedETHForDeposits += allocateToDeposits;
            emit AllocatedETHToDeposits(allocateToDeposits);
        }

        if (allocateToUnstakeRequestsManager > 0) {
            emit AllocatedETHToUnstakeRequestsManager(allocateToUnstakeRequestsManager);
            unstakeRequestsManager.allocateETH{value: allocateToUnstakeRequestsManager}();
        }
    }

    /// @notice Initiates new validators by sending ETH to the beacon chain deposit contract.
    /// @dev Cannot initiate the same validator (public key) twice. Since BLS signatures cannot be feasibly verified on
    /// the EVM, the caller must carefully make sure that the sent payloads (public keys + signatures) are correct,
    /// otherwise the sent ETH will be lost.
    function initiateValidatorsWithDeposits(ValidatorParams[] calldata validators, bytes32 expectedDepositRoot)
        external
        onlyRole(INITIATOR_SERVICE_ROLE)
    {
        if (pauser.isInitiateValidatorsPaused()) {
            revert Paused();
        }
        if (validators.length == 0) {
            return;
        }

        // Check that the deposit root matches the given value. This ensures that the deposit contract state
        // has not changed since the transaction was submitted, which means that a rogue node operator cannot
        // front-run deposit transactions.
        bytes32 actualRoot = depositContract.get_deposit_root();
        if (expectedDepositRoot != actualRoot) {
            revert InvalidDepositRoot(actualRoot);
        }

        // First loop is to check that all validators are valid according to our constraints and we record the
        // validators and how much we have deposited.
        uint256 amountDeposited = 0;
        for (uint256 i = 0; i < validators.length; ++i) {
            ValidatorParams calldata validator = validators[i];

            if (usedValidators[validator.pubkey]) {
                revert PreviouslyUsedValidator();
            }

            if (validator.depositAmount < minimumDepositAmount) {
                revert MinimumValidatorDepositNotSatisfied();
            }

            if (validator.depositAmount > maximumDepositAmount) {
                revert MaximumValidatorDepositExceeded();
            }

            _requireProtocolWithdrawalAccount(validator.withdrawalCredentials);

            usedValidators[validator.pubkey] = true;
            amountDeposited += validator.depositAmount;

            emit ValidatorInitiated({
                id: keccak256(validator.pubkey),
                operatorID: validator.operatorID,
                pubkey: validator.pubkey,
                amountDeposited: validator.depositAmount
            });
        }

        if (amountDeposited > allocatedETHForDeposits) {
            revert NotEnoughDepositETH();
        }

        allocatedETHForDeposits -= amountDeposited;
        totalDepositedInValidators += amountDeposited;
        numInitiatedValidators += validators.length;

        // Second loop is to send the deposits to the deposit contract. Keeps external calls to the deposit contract
        // separate from state changes.
        for (uint256 i = 0; i < validators.length; ++i) {
            ValidatorParams calldata validator = validators[i];
            depositContract.deposit{value: validator.depositAmount}({
                pubkey: validator.pubkey,
                withdrawal_credentials: validator.withdrawalCredentials,
                signature: validator.signature,
                deposit_data_root: validator.depositDataRoot
            });
        }
    }

    /// @inheritdoc IStakingReturnsWrite
    /// @dev Intended to be the called in the same transaction initiated by reclaimAllocatedETHSurplus().
    /// This should only be called in emergency scenarios, e.g. if the unstake requests manager has cancelled
    /// unfinalized requests and there is a surplus balance.
    /// Adds the received funds to the unallocated balance.
    function receiveFromUnstakeRequestsManager() external payable onlyUnstakeRequestsManager {
        unallocatedETH += msg.value;
    }

    /// @notice Tops up the unallocated ETH balance to increase the amount of ETH in the protocol.
    /// @dev Bypasses the returns aggregator fee collection to inject ETH directly into the protocol.
    function topUp() external payable onlyRole(TOP_UP_ROLE) {
        unallocatedETH += msg.value;
    }

    /// @notice Converts from mETH to ETH using the current exchange rate.
    /// The exchange rate is given by the total supply of mETH and total ETH controlled by the protocol.
    function ethToMETH(uint256 ethAmount) public view returns (uint256) {
        // 1:1 exchange rate on the first stake.
        // Using `METH.totalSupply` over `totalControlled` to check if the protocol is in its bootstrap phase since
        // the latter can be manipulated, for example by transferring funds to the `ExecutionLayerReturnsReceiver`, and
        // therefore be non-zero by the time the first stake is made
        if (mETH.totalSupply() == 0) {
            return ethAmount;
        }

        // deltaMETH = (1 - exchangeAdjustmentRate) * (mETHSupply / totalControlled) * ethAmount
        // This rounds down to zero in the case of `(1 - exchangeAdjustmentRate) * ethAmount * mETHSupply <
        // totalControlled`.
        // While this scenario is theoretically possible, it can only be realised feasibly during the protocol's
        // bootstrap phase and if `totalControlled` and `mETHSupply` can be changed independently of each other. Since
        // the former is permissioned, and the latter is not permitted by the protocol, this cannot be exploited by an
        // attacker.
        return Math.mulDiv(
            ethAmount,
            mETH.totalSupply() * uint256(_BASIS_POINTS_DENOMINATOR - exchangeAdjustmentRate),
            totalControlled() * uint256(_BASIS_POINTS_DENOMINATOR)
        );
    }

    /// @notice Converts from ETH to mETH using the current exchange rate.
    /// The exchange rate is given by the total supply of mETH and total ETH controlled by the protocol.
    function mETHToETH(uint256 mETHAmount) public view returns (uint256) {
        // 1:1 exchange rate on the first stake.
        // Using `METH.totalSupply` over `totalControlled` to check if the protocol is in its bootstrap phase since
        // the latter can be manipulated, for example by transferring funds to the `ExecutionLayerReturnsReceiver`, and
        // therefore be non-zero by the time the first stake is made
        if (mETH.totalSupply() == 0) {
            return mETHAmount;
        }

        // deltaETH = (totalControlled / mETHSupply) * mETHAmount
        // This rounds down to zero in the case of `mETHAmount * totalControlled < mETHSupply`.
        // While this scenario is theoretically possible, it can only be realised feasibly during the protocol's
        // bootstrap phase and if `totalControlled` and `mETHSupply` can be changed independently of each other. Since
        // the former is permissioned, and the latter is not permitted by the protocol, this cannot be exploited by an
        // attacker.
        return Math.mulDiv(mETHAmount, totalControlled(), mETH.totalSupply());
    }

    /// @notice The total amount of ETH controlled by the protocol.
    /// @dev Sums over the balances of various contracts and the beacon chain information from the oracle.
    function totalControlled() public view returns (uint256) {
        OracleRecord memory record = oracle.latestRecord();
        uint256 total = 0;
        total += unallocatedETH;
        total += allocatedETHForDeposits;
        /// The total ETH deposited to the beacon chain must be decreased by the deposits processed by the off-chain
        /// oracle since it will be accounted for in the currentTotalValidatorBalance from that point onwards.
        total += totalDepositedInValidators - record.cumulativeProcessedDepositAmount;
        total += record.currentTotalValidatorBalance;
        total += unstakeRequestsManager.balance();
        return total;
    }

    /// @notice Checks if the given withdrawal credentials are a valid 0x01 prefixed withdrawal address.
    /// @dev See also
    /// https://github.com/ethereum/consensus-specs/blob/master/specs/phase0/validator.md#eth1_address_withdrawal_prefix
    function _requireProtocolWithdrawalAccount(bytes calldata withdrawalCredentials) internal view {
        if (withdrawalCredentials.length != 32) {
            revert InvalidWithdrawalCredentialsWrongLength(withdrawalCredentials.length);
        }

        // Check the ETH1_ADDRESS_WITHDRAWAL_PREFIX and that all other bytes are zero.
        bytes12 prefixAndPadding = bytes12(withdrawalCredentials[:12]);
        if (prefixAndPadding != 0x010000000000000000000000) {
            revert InvalidWithdrawalCredentialsNotETH1(prefixAndPadding);
        }

        address addr = address(bytes20(withdrawalCredentials[12:32]));
        if (addr != withdrawalWallet) {
            revert InvalidWithdrawalCredentialsWrongAddress(addr);
        }
    }

    /// @inheritdoc IStakingReturnsWrite
    /// @dev Adds the received funds to the unallocated balance.
    function receiveReturns() external payable onlyReturnsAggregator {
        emit ReturnsReceived(msg.value);
        unallocatedETH += msg.value;
    }

    /// @notice Ensures that the caller is the returns aggregator.
    modifier onlyReturnsAggregator() {
        if (msg.sender != returnsAggregator) {
            revert NotReturnsAggregator();
        }
        _;
    }

    /// @notice Ensures that the caller is the unstake requests manager.
    modifier onlyUnstakeRequestsManager() {
        if (msg.sender != address(unstakeRequestsManager)) {
            revert NotUnstakeRequestsManager();
        }
        _;
    }

    /// @notice Ensures that the given address is not the zero address.
    modifier notZeroAddress(address addr) {
        if (addr == address(0)) {
            revert ZeroAddress();
        }
        _;
    }

    /// @notice Sets the minimum amount of ETH users can stake.
    function setMinimumStakeBound(uint256 minimumStakeBound_) external onlyRole(STAKING_MANAGER_ROLE) {
        minimumStakeBound = minimumStakeBound_;
        emit ProtocolConfigChanged(
            this.setMinimumStakeBound.selector, "setMinimumStakeBound(uint256)", abi.encode(minimumStakeBound_)
        );
    }

    /// @notice Sets the minimum amount of mETH users can unstake.
    function setMinimumUnstakeBound(uint256 minimumUnstakeBound_) external onlyRole(STAKING_MANAGER_ROLE) {
        minimumUnstakeBound = minimumUnstakeBound_;
        emit ProtocolConfigChanged(
            this.setMinimumUnstakeBound.selector, "setMinimumUnstakeBound(uint256)", abi.encode(minimumUnstakeBound_)
        );
    }

    /// @notice Sets the staking adjust rate.
    function setExchangeAdjustmentRate(uint16 exchangeAdjustmentRate_) external onlyRole(STAKING_MANAGER_ROLE) {
        if (exchangeAdjustmentRate_ > _MAX_EXCHANGE_ADJUSTMENT_RATE) {
            revert InvalidConfiguration();
        }

        // even though this check is redundant with the one above, this function will be rarely used so we keep it as a
        // reminder for future upgrades that this must never be violated.
        assert(exchangeAdjustmentRate_ <= _BASIS_POINTS_DENOMINATOR);

        exchangeAdjustmentRate = exchangeAdjustmentRate_;
        emit ProtocolConfigChanged(
            this.setExchangeAdjustmentRate.selector,
            "setExchangeAdjustmentRate(uint16)",
            abi.encode(exchangeAdjustmentRate_)
        );
    }

    /// @notice Sets the minimum amount of ETH that the staking contract can send to the deposit contract to initiate
    /// new validators.
    function setMinimumDepositAmount(uint256 minimumDepositAmount_) external onlyRole(STAKING_MANAGER_ROLE) {
        minimumDepositAmount = minimumDepositAmount_;
        emit ProtocolConfigChanged(
            this.setMinimumDepositAmount.selector, "setMinimumDepositAmount(uint256)", abi.encode(minimumDepositAmount_)
        );
    }

    /// @notice Sets the maximum amount of ETH that the staking contract can send to the deposit contract to initiate
    /// new validators.
    function setMaximumDepositAmount(uint256 maximumDepositAmount_) external onlyRole(STAKING_MANAGER_ROLE) {
        maximumDepositAmount = maximumDepositAmount_;
        emit ProtocolConfigChanged(
            this.setMaximumDepositAmount.selector, "setMaximumDepositAmount(uint256)", abi.encode(maximumDepositAmount_)
        );
    }

    /// @notice Sets the maximumMETHSupply variable.
    /// Note: We intentionally allow this to be set lower than the current totalSupply so that the amount can be
    /// adjusted downwards by unstaking.
    /// See also {maximumMETHSupply}.
    function setMaximumMETHSupply(uint256 maximumMETHSupply_) external onlyRole(STAKING_MANAGER_ROLE) {
        maximumMETHSupply = maximumMETHSupply_;
        emit ProtocolConfigChanged(
            this.setMaximumMETHSupply.selector, "setMaximumMETHSupply(uint256)", abi.encode(maximumMETHSupply_)
        );
    }

    /// @notice Sets the address to receive beacon chain withdrawals (i.e. validator rewards and exits).
    /// @dev Changing this variable will not have an immediate effect as all exisiting validators will still have the
    /// original value set.
    function setWithdrawalWallet(address withdrawalWallet_)
        external
        onlyRole(STAKING_MANAGER_ROLE)
        notZeroAddress(withdrawalWallet_)
    {
        withdrawalWallet = withdrawalWallet_;
        emit ProtocolConfigChanged(
            this.setWithdrawalWallet.selector, "setWithdrawalWallet(address)", abi.encode(withdrawalWallet_)
        );
    }

    /// @notice Sets the staking allowlist flag.
    function setStakingAllowlist(bool isStakingAllowlist_) external onlyRole(STAKING_MANAGER_ROLE) {
        isStakingAllowlist = isStakingAllowlist_;
        emit ProtocolConfigChanged(
            this.setStakingAllowlist.selector, "setStakingAllowlist(bool)", abi.encode(isStakingAllowlist_)
        );
    }

    receive() external payable {
        revert DoesNotReceiveETH();
    }

    fallback() external payable {
        revert DoesNotReceiveETH();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControlUpgradeable {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// 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 (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/MathUpgradeable.sol";
import "./math/SignedMathUpgradeable.sol";

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = MathUpgradeable.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMathUpgradeable.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, MathUpgradeable.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal onlyInitializing {
    }

    function __ERC165_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }

    /**
     * @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 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// 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 IERC20Upgradeable {
    /**
     * @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 v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20MetadataUpgradeable is IERC20Upgradeable {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC5267.sol)

pragma solidity ^0.8.0;

interface IERC5267Upgradeable {
    /**
     * @dev MAY be emitted to signal that the domain could have changed.
     */
    event EIP712DomainChanged();

    /**
     * @dev returns the fields and values that describe the domain separator used by this contract for EIP-712
     * signature.
     */
    function eip712Domain()
        external
        view
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        );
}

// 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";
import "../extensions/IERC20PermitUpgradeable.sol";
import "../../../utils/AddressUpgradeable.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20Upgradeable {
    using AddressUpgradeable for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20Upgradeable token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20Upgradeable token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20Upgradeable token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to
     * 0 before setting it to a non-zero value.
     */
    function forceApprove(IERC20Upgradeable token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20PermitUpgradeable token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20Upgradeable token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20Upgradeable token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && AddressUpgradeable.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

interface ProtocolEvents {
    /// @notice Emitted when a protocol configuration has been updated.
    /// @param setterSelector The selector of the function that updated the configuration.
    /// @param setterSignature The signature of the function that updated the configuration.
    /// @param value The abi-encoded data passed to the function that updated the configuration. Since this event will
    /// only be emitted by setters, this data corresponds to the updated values in the protocol configuration.
    event ProtocolConfigChanged(bytes4 indexed setterSelector, string setterSignature, bytes value);
}

// ┏━━━┓━┏┓━┏┓━━┏━━━┓━━┏━━━┓━━━━┏━━━┓━━━━━━━━━━━━━━━━━━━┏┓━━━━━┏━━━┓━━━━━━━━━┏┓━━━━━━━━━━━━━━┏┓━
// ┃┏━━┛┏┛┗┓┃┃━━┃┏━┓┃━━┃┏━┓┃━━━━┗┓┏┓┃━━━━━━━━━━━━━━━━━━┏┛┗┓━━━━┃┏━┓┃━━━━━━━━┏┛┗┓━━━━━━━━━━━━┏┛┗┓
// ┃┗━━┓┗┓┏┛┃┗━┓┗┛┏┛┃━━┃┃━┃┃━━━━━┃┃┃┃┏━━┓┏━━┓┏━━┓┏━━┓┏┓┗┓┏┛━━━━┃┃━┗┛┏━━┓┏━┓━┗┓┏┛┏━┓┏━━┓━┏━━┓┗┓┏┛
// ┃┏━━┛━┃┃━┃┏┓┃┏━┛┏┛━━┃┃━┃┃━━━━━┃┃┃┃┃┏┓┃┃┏┓┃┃┏┓┃┃━━┫┣┫━┃��━━━━━┃┃━┏┓┃┏┓┃┃┏┓┓━┃┃━┃┏┛┗━┓┃━┃┏━┛━┃┃━
// ┃┗━━┓━┃┗┓┃┃┃┃┃┃┗━┓┏┓┃┗━┛┃━━━━┏┛┗┛┃┃┃━┫┃┗┛┃┃┗┛┃┣━━┃┃┃━┃┗┓━━━━┃┗━┛┃┃┗┛┃┃┃┃┃━┃┗┓┃┃━┃┗┛┗┓┃┗━┓━┃┗┓
// ┗━━━┛━┗━┛┗┛┗┛┗━━━┛┗┛┗━━━┛━━━━┗━━━┛┗━━┛┃┏━┛┗━━┛┗━━┛┗┛━┗━┛━━━━┗━━━┛┗━━┛┗┛┗┛━┗━┛┗┛━┗━━━┛┗━━┛━┗━┛
// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┃┃━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┗┛━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
//
// From: https://github.com/ethereum/consensus-specs/blob/dev/solidity_deposit_contract/deposit_contract.sol

// SPDX-License-Identifier: CC0-1.0
pragma solidity ^0.8.20;

// This interface is designed to be compatible with the Vyper version.
/// @notice This is the Ethereum 2.0 deposit contract interface.
/// For more information see the Phase 0 specification under https://github.com/ethereum/eth2.0-specs
interface IDepositContract {
    /// @notice A processed deposit event.
    event DepositEvent(bytes pubkey, bytes withdrawal_credentials, bytes amount, bytes signature, bytes index);

    /// @notice Submit a Phase 0 DepositData object.
    /// @param pubkey A BLS12-381 public key.
    /// @param withdrawal_credentials Commitment to a public key for withdrawals.
    /// @param signature A BLS12-381 signature.
    /// @param deposit_data_root The SHA-256 hash of the SSZ-encoded DepositData object.
    /// Used as a protection against malformed input.
    function deposit(
        bytes calldata pubkey,
        bytes calldata withdrawal_credentials,
        bytes calldata signature,
        bytes32 deposit_data_root
    ) external payable;

    /// @notice Query the current deposit root hash.
    /// @return The deposit root hash.
    function get_deposit_root() external view returns (bytes32);

    /// @notice Query the current deposit count.
    /// @return The deposit count encoded as a little endian 64-bit number.
    function get_deposit_count() external view returns (bytes memory);
}

// Based on official specification in https://eips.ethereum.org/EIPS/eip-165
interface ERC165 {
    /// @notice Query if a contract implements an interface
    /// @param interfaceId The interface identifier, as specified in ERC-165
    /// @dev Interface identification is specified in ERC-165. This function
    ///  uses less than 30,000 gas.
    /// @return `true` if the contract implements `interfaceId` and
    ///  `interfaceId` is not 0xffffffff, `false` otherwise
    function supportsInterface(bytes4 interfaceId) external pure returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

/// @notice The records stored by the oracle contract informing the protocol about consensus layer activity. It is
/// computed and reported by off-chain oracle services.
/// @dev "current" quantities refer to the state at the `updateEndBlock` block number.
/// @dev "cumulative" quantities refer to sums up to the `updateEndBlock` block number.
/// @dev "window" quantities refer to sums over the block window between the `updateStartBlock` and `updateEndBlock`.
/// @param updateStartBlock The start of the oracle record block window. This should be 1 higher than the
/// updateEndBlock of the previous oracle record.
/// @param updateEndBlock The block number up to which this oracle record was computed (inclusive).
/// @param currentNumValidatorsNotWithdrawable The number of our validators that do not have the withdrawable status.
/// @param cumulativeNumValidatorsWithdrawable The total number of our validators that have the withdrawable status.
/// These validators have either the status `withdrawal_possible` or `withdrawal_done`. Note: validators can
/// fluctuate between the two statuses due to top ups.
/// @param windowWithdrawnPrincipalAmount The amount of principal that has been withdrawn from the consensus layer in
/// the analyzed block window.
/// @param windowWithdrawnRewardAmount The amount of rewards that has been withdrawn from the consensus layer in the
/// analysed block window.
/// @param currentTotalValidatorBalance The total amount of ETH in the consensus layer (i.e. the sum of all validator
/// balances). This is one of the major quantities to compute the total value controlled by the protocol.
/// @param cumulativeProcessedDepositAmount The total amount of ETH that has been deposited into and processed by the
/// consensus layer. This is used to prevent double counting of the ETH deposited to the consensus layer.
struct OracleRecord {
    uint64 updateStartBlock;
    uint64 updateEndBlock;
    uint64 currentNumValidatorsNotWithdrawable;
    uint64 cumulativeNumValidatorsWithdrawable;
    uint128 windowWithdrawnPrincipalAmount;
    uint128 windowWithdrawnRewardAmount;
    uint128 currentTotalValidatorBalance;
    uint128 cumulativeProcessedDepositAmount;
}

interface IOracleWrite {
    /// @notice Pushes a new record to the oracle.
    function receiveRecord(OracleRecord calldata record) external;
}

interface IOracleReadRecord {
    /// @notice Returns the latest validated record.
    /// @return `OracleRecord` The latest validated record.
    function latestRecord() external view returns (OracleRecord calldata);

    /// @notice Returns the record at the given index.
    /// @param idx The index of the record to retrieve.
    /// @return `OracleRecord` The record at the given index.
    function recordAt(uint256 idx) external view returns (OracleRecord calldata);

    /// @notice Returns the number of records in the oracle.
    /// @return `uint256` The number of records in the oracle.
    function numRecords() external view returns (uint256);
}

interface IOracleReadPending {
    /// @notice Returns the pending update.
    /// @return `OracleRecord` The pending update.
    function pendingUpdate() external view returns (OracleRecord calldata);

    /// @notice Indicates whether an oracle update is pending, i.e. if it was rejected by `_sanityCheckUpdate`.
    function hasPendingUpdate() external view returns (bool);
}

interface IOracleRead is IOracleReadRecord, IOracleReadPending {}

interface IOracleManager {
    /// @notice Sets the new oracle updater for the contract.
    /// @param newUpdater The new oracle updater.
    function setOracleUpdater(address newUpdater) external;
}

interface IOracle is IOracleWrite, IOracleRead, IOracleManager {}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

interface IPauserRead {
    /// @notice Flag indicating if staking is paused.
    function isStakingPaused() external view returns (bool);

    /// @notice Flag indicating if unstake requests are paused.
    function isUnstakeRequestsAndClaimsPaused() external view returns (bool);

    /// @notice Flag indicating if initiate validators is paused
    function isInitiateValidatorsPaused() external view returns (bool);

    /// @notice Flag indicating if submit oracle records is paused.
    function isSubmitOracleRecordsPaused() external view returns (bool);

    /// @notice Flag indicating if allocate ETH is paused.
    function isAllocateETHPaused() external view returns (bool);
}

interface IPauserWrite {
    /// @notice Pauses all actions.
    function pauseAll() external;
}

interface IPauser is IPauserRead, IPauserWrite {}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library MathUpgradeable {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMathUpgradeable {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165Upgradeable {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

{
  "remappings": [
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "shanghai",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"NotStakingContract","type":"error"},{"inputs":[],"name":"NotUnstakeRequestsManagerContract","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"blockList","type":"address"}],"name":"BlockListContractAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"blockList","type":"address"}],"name":"BlockListContractRemoved","type":"event"},{"anonymous":false,"inputs":[],"name":"EIP712DomainChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"ADD_BLOCK_LIST_CONTRACT_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"BURNER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MINTER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"REMOVE_BLOCK_LIST_CONTRACT_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"blockListAddress","type":"address"}],"name":"addBlockListContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"eip712Domain","outputs":[{"internalType":"bytes1","name":"fields","type":"bytes1"},{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"version","type":"string"},{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"address","name":"verifyingContract","type":"address"},{"internalType":"bytes32","name":"salt","type":"bytes32"},{"internalType":"uint256[]","name":"extensions","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"forceBurn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bool","name":"excludeBlockList","type":"bool"}],"name":"forceMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getBlockLists","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRoleMember","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"admin","type":"address"},{"internalType":"contract IStaking","name":"staking","type":"address"},{"internalType":"contract IUnstakeRequestsManager","name":"unstakeRequestsManager","type":"address"}],"internalType":"struct METH.Init","name":"init","type":"tuple"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"isBlocked","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"staker","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"blockListAddress","type":"address"}],"name":"removeBlockListContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakingContract","outputs":[{"internalType":"contract IStaking","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unstakeRequestsManagerContract","outputs":[{"internalType":"contract IUnstakeRequestsManager","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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