// File: src/core/Raid.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

import {Initializable} from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import {AccessControlUpgradeable} from "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
import {IConfetti} from "../interfaces/IConfetti.sol";
import {IParty} from "../interfaces/IParty.sol";
import {IRaid} from "../interfaces/IRaid.sol";
import {ISeeder} from "../interfaces/ISeeder.sol";

/// @title RaidParty Raid Contract
/// @author Hasan Gondal <hasan@afraidlabs.com>

/**
 *   ___      _    _ ___          _
 *  | _ \__ _(_)__| | _ \__ _ _ _| |_ _  _
 *  |   / _` | / _` |  _/ _` | '_|  _| || |
 *  |_|_\__,_|_\__,_|_| \__,_|_|  \__|\_, |
 *                                    |__/
 */

/// @notice Raid is currently halted.
error RaidHalted();

/// @notice Raid has started yet.
error RaidStarted();

/// @notice Raid has not started yet.
error RaidNotStarted();

/// @notice Raid has not been seeded.
error RaidNotSeeded();

/// @notice Bosses have not yet been created.
error MissingBosses();

/// @notice User's local state is invalid, requires them to run `fixInternalState(address user)`.
error InvalidState();

/// @notice The weightTotal should always be above zero when the raid is live.
error InvalidWeightTotal();

/// @notice Invalid boss selected, required `bossId` to be less than `amount`.
/// @param bossId selected bossId.
/// @param amount current amount of bosses.
error InvalidBoss(uint32 bossId, uint32 amount);

/// @notice Invalid caller on current function, requires `expected` caller but current caller is `caller`.
/// @param caller current caller
/// @param expected expected caller
error InvalidCaller(address caller, address expected);

/// @notice Snapshot is being taken too recently, `currentTime` is before `earliestTime`.
/// @param currentTime current timestamp.
/// @param earliestTime next available snapshot time.
error SnapshotTooRecent(uint64 currentTime, uint64 earliestTime);

contract Raid is IRaid, Initializable, AccessControlUpgradeable {
    bool public started;
    bool public halted;
    bool public bossesCreated;

    uint32 private roundId;
    uint32 public weightTotal;
    uint64 public lastSnapshotTime;
    /// @dev DEPRECATED BUT DO NOT REMOVE, THIS WILL BREAK STORAGE;
    uint64 private constant PRECISION = 1e18;

    uint256 public seed;
    uint256 public seedId;

    IParty public party;
    ISeeder public seeder;
    IConfetti public confetti;

    Boss[] public bosses;
    Snapshot[] public snapshots;

    mapping(uint32 => Round) public rounds;
    mapping(address => Raider) public raiders;

    event HaltUpdated(bool isHalted);

    modifier notHalted() {
        if (halted) revert RaidHalted();
        _;
    }

    modifier raidActive() {
        if (!started) revert RaidNotStarted();
        _;
    }

    modifier partyCaller() {
        address partyAddress = address(party);
        if (msg.sender != partyAddress)
            revert InvalidCaller({caller: msg.sender, expected: partyAddress});
        _;
    }

    function initialize(
        address admin,
        IParty _party,
        ISeeder _seeder,
        IConfetti _confetti
    ) external initializer {
        __AccessControl_init();
        _setupRole(DEFAULT_ADMIN_ROLE, admin);

        party = _party;
        seeder = _seeder;
        confetti = _confetti;
    }

    function setParty(IParty _party) external onlyRole(DEFAULT_ADMIN_ROLE) {
        party = _party;
    }

    function setSeeder(ISeeder _seeder) external onlyRole(DEFAULT_ADMIN_ROLE) {
        seeder = _seeder;
    }

    function setHalted(bool _halted) external onlyRole(DEFAULT_ADMIN_ROLE) {
        halted = _halted;

        emit HaltUpdated(_halted);
    }

    function updateSeed() external onlyRole(DEFAULT_ADMIN_ROLE) {
        if (started) {
            _syncRounds(uint32(block.number));
        }

        seed = seeder.getSeedSafe(address(this), seedId);
    }

    function requestSeed() external onlyRole(DEFAULT_ADMIN_ROLE) {
        seedId += 1;
        seeder.requestSeed(seedId);
    }

    function createBosses(Boss[] calldata _bosses)
        external
        onlyRole(DEFAULT_ADMIN_ROLE)
    {
        delete bosses;
        delete weightTotal;

        for (uint256 i; i < _bosses.length; i++) {
            Boss calldata boss = _bosses[i];
            weightTotal += boss.weight;
            bosses.push(boss);
        }

        bossesCreated = true;
    }

    function updateBoss(uint32 id, Boss calldata boss)
        external
        onlyRole(DEFAULT_ADMIN_ROLE)
    {
        if (!(bosses.length > id)) {
            revert InvalidBoss({bossId: id, amount: uint32(bosses.length)});
        }

        if (started) {
            _syncRounds(uint32(block.number));
        }

        weightTotal -= bosses[id].weight;
        weightTotal += boss.weight;
        bosses[id] = boss;

        if (weightTotal == 0) revert InvalidWeightTotal();
    }

    function appendBoss(Boss calldata boss)
        external
        onlyRole(DEFAULT_ADMIN_ROLE)
    {
        if (started) {
            _syncRounds(uint32(block.number));
        }

        weightTotal += boss.weight;
        bosses.push(boss);
    }

    function manualSync() external {
        _syncRounds(uint32(block.number));
    }

    function start() external onlyRole(DEFAULT_ADMIN_ROLE) {
        if (started) revert RaidStarted();
        if (!bossesCreated) revert MissingBosses();
        if (weightTotal == 0) revert InvalidWeightTotal();
        if (seedId == 0) revert RaidNotSeeded();

        seed = seeder.getSeedSafe(address(this), seedId);
        rounds[roundId] = _rollRound(seed, uint32(block.number));

        started = true;
        lastSnapshotTime = uint64(block.timestamp);
    }

    function commitSnapshot() external raidActive {
        if (lastSnapshotTime + 23 hours > block.timestamp) {
            revert SnapshotTooRecent({
                currentTime: uint64(block.timestamp),
                earliestTime: lastSnapshotTime + 23 hours
            });
        }

        _syncRounds(uint32(block.number));

        Snapshot memory snapshot = _createSnapshot();
        snapshots.push(snapshot);

        lastSnapshotTime = uint64(block.timestamp);
    }

    function getRaidData() external view returns (RaidData memory data) {
        uint256 _seed = seed;
        uint32 _roundId = roundId;
        Round memory round = rounds[_roundId];
        while (block.number > round.finalBlock) {
            _roundId += 1;
            _seed = _rollSeed(_seed);
            round = _rollRound(_seed, round.finalBlock + 1);
        }

        data.boss = round.boss;
        data.roundId = _roundId;
        data.health = uint32(round.finalBlock - block.number);
        data.maxHealth = bosses[round.boss].blockHealth;
        data.seed = _seed;
    }

    function getPendingRewards(address user) external view returns (uint256) {
        Raider memory raider = raiders[user];
        (, uint256 rewards) = _fetchRewards(raider);
        return rewards;
    }

    function updateDamage(address user, uint32 _dpb)
        external
        notHalted
        raidActive
        partyCaller
    {
        Raider storage raider = raiders[user];
        uint32 blockNumber = uint32(block.number);

        if (raider.startedAt > 0) {
            (uint32 _roundId, uint256 rewards) = _fetchRewards(raider);
            raider.startRound = _roundId;
            raider.pendingRewards += rewards;
        } else {
            raider.startedAt = blockNumber;
            raider.startRound = _lazyFetchRoundId();
        }

        raider.dpb = _dpb;
        raider.startBlock = blockNumber;
        raider.startSnapshot = uint32(snapshots.length + 1);
    }

    function claimRewards(address user) external notHalted {
        Raider storage raider = raiders[user];

        (uint32 _roundId, uint256 rewards) = _fetchRewards(raider);
        rewards += raider.pendingRewards;

        raider.startRound = _roundId;
        raider.pendingRewards = 0;
        raider.startBlock = uint32(block.number);
        raider.startSnapshot = uint32(snapshots.length + 1);

        if (rewards > 0) {
            confetti.mint(user, rewards);
        }
    }

    function fixInternalState(address user) external {
        uint32 _roundId = roundId;
        uint256 _seed = seed;
        Round memory round = rounds[_roundId];
        Raider storage raider = raiders[user];

        unchecked {
            if (raider.startBlock > round.finalBlock) {
                while (raider.startBlock > round.finalBlock) {
                    _roundId += 1;
                    _seed = _rollSeed(_seed);
                    round = _rollRound(_seed, round.finalBlock + 1);
                }
            } else if (raider.startBlock < round.startBlock) {
                while (raider.startBlock < round.startBlock) {
                    _roundId -= 1;
                    round = rounds[_roundId];
                }
            }
        }

        raider.startRound = _roundId;
    }

    /** Internal */

    function _rollSeed(uint256 oldSeed) internal pure returns (uint256 rolled) {
        assembly {
            mstore(0x00, oldSeed)
            rolled := keccak256(0x00, 0x20)
        }
    }

    function _rollRound(uint256 _seed, uint32 startBlock)
        internal
        view
        returns (Round memory round)
    {
        unchecked {
            uint32 roll = uint32(_seed % weightTotal);
            uint256 weight = 0;
            uint32 _bossWeight;

            for (uint16 bossId; bossId < bosses.length; bossId++) {
                _bossWeight = bosses[bossId].weight;

                if (roll <= weight + _bossWeight) {
                    round.boss = bossId;
                    round.roll = roll;
                    round.startBlock = startBlock;
                    round.finalBlock = startBlock + bosses[bossId].blockHealth;

                    return round;
                }

                weight += _bossWeight;
            }
        }
    }

    function _syncRounds(uint32 maxBlock) internal {
        unchecked {
            Round memory round = rounds[roundId];

            while (maxBlock > round.finalBlock) {
                roundId += 1;
                seed = _rollSeed(seed);
                round = _rollRound(seed, round.finalBlock + 1);
                rounds[roundId] = round;
            }
        }
    }

    function _createSnapshot()
        internal
        view
        returns (Snapshot memory snapshot)
    {
        uint32 _roundId;

        if (snapshots.length > 0) {
            _roundId = snapshots[snapshots.length - 1].finalRound + 1;
        }

        snapshot.initialRound = _roundId;
        snapshot.initialBlock = rounds[_roundId].startBlock;

        while (_roundId < roundId) {
            Round memory round = rounds[_roundId];
            Boss memory boss = bosses[round.boss];

            snapshot.attackDealt +=
                uint256(boss.blockHealth) *
                uint256(boss.multiplier);

            _roundId += 1;
        }

        snapshot.finalRound = _roundId - 1;
        snapshot.finalBlock = rounds[_roundId - 1].finalBlock;
    }

    function _fetchRewards(Raider memory raider)
        internal
        view
        returns (uint32 _roundId, uint256 rewards)
    {
        if (raider.dpb > 0) {
            if (snapshots.length > raider.startSnapshot) {
                (_roundId, rewards) = _fetchNewRewardsWithSnapshot(raider);
                return (_roundId, rewards);
            } else {
                (_roundId, rewards) = _fetchNewRewards(raider);
                return (_roundId, rewards);
            }
        }

        return (_lazyFetchRoundId(), 0);
    }

    function _fetchNewRewards(Raider memory raider)
        internal
        view
        returns (uint32 _roundId, uint256 rewards)
    {
        unchecked {
            Boss memory boss;
            Round memory round;

            uint256 _seed = seed;

            if (raider.startRound <= roundId) {
                _roundId = raider.startRound;
                for (_roundId; _roundId <= roundId; _roundId++) {
                    round = rounds[_roundId];
                    boss = bosses[round.boss];
                    rewards += _rewardCalculation(
                        raider,
                        round,
                        boss.multiplier
                    );
                }
                _roundId -= 1;
            } else {
                _roundId = roundId;
                round = rounds[_roundId];
            }

            while (block.number > round.finalBlock) {
                _roundId += 1;
                _seed = _rollSeed(_seed);
                round = _rollRound(_seed, round.finalBlock + 1);
                boss = bosses[round.boss];

                if (_roundId >= raider.startRound) {
                    rewards += _rewardCalculation(
                        raider,
                        round,
                        boss.multiplier
                    );
                }
            }
        }
    }

    function _fetchNewRewardsWithSnapshot(Raider memory raider)
        internal
        view
        returns (uint32 _roundId, uint256 rewards)
    {
        unchecked {
            Boss memory boss;
            Round memory round;

            _roundId = raider.startRound;
            uint256 _snapshotId = raider.startSnapshot;
            uint32 _lastRound = snapshots[_snapshotId].initialRound;

            for (_roundId; _roundId < _lastRound; _roundId++) {
                round = rounds[_roundId];
                boss = bosses[round.boss];
                rewards += _rewardCalculation(raider, round, boss.multiplier);
            }

            for (_snapshotId; _snapshotId < snapshots.length; _snapshotId++) {
                rewards += snapshots[_snapshotId].attackDealt * raider.dpb;
                _roundId = snapshots[_snapshotId].finalRound;
            }

            round = rounds[_roundId];

            while (_roundId < roundId) {
                _roundId += 1;
                round = rounds[_roundId];
                boss = bosses[round.boss];
                rewards += _rewardCalculation(raider, round, boss.multiplier);
            }

            uint256 _seed = seed;
            while (block.number > round.finalBlock) {
                _roundId += 1;
                _seed = _rollSeed(_seed);
                round = _rollRound(_seed, round.finalBlock + 1);
                boss = bosses[round.boss];
                rewards += _rewardCalculation(raider, round, boss.multiplier);
            }
        }
    }

    function _lazyFetchRoundId() internal view returns (uint32 _roundId) {
        unchecked {
            _roundId = roundId;
            Round memory round = rounds[_roundId];
            uint256 _seed = seed;
            while (block.number > round.finalBlock) {
                _roundId += 1;
                _seed = _rollSeed(_seed);
                round = _rollRound(_seed, round.finalBlock + 1);
            }
        }
    }

    function _rewardCalculation(
        Raider memory raider,
        Round memory round,
        uint256 bossMultiplier
    ) internal view returns (uint256 reward) {
        if (raider.startBlock > round.finalBlock) revert InvalidState();

        unchecked {
            uint256 blocksDefeated;

            if (
                round.startBlock >= raider.startBlock &&
                block.number >= round.finalBlock
            ) {
                blocksDefeated = round.finalBlock - round.startBlock;
            } else if (
                raider.startBlock > round.startBlock &&
                block.number >= round.finalBlock
            ) {
                blocksDefeated = round.finalBlock - raider.startBlock;
            } else if (
                round.finalBlock > raider.startBlock &&
                round.startBlock >= raider.startBlock
            ) {
                blocksDefeated = block.number - round.startBlock;
            } else if (
                raider.startBlock > round.startBlock &&
                round.finalBlock > block.number
            ) {
                blocksDefeated = block.number - raider.startBlock;
            }

            // Inline Assembly replaces the following code
            // reward =
            //     (1e18 *
            //         uint256(blocksDefeated) *
            //         uint256(bossMultiplier) *
            //         uint256(raider.dpb)) /
            //     PRECISION;

            assembly {
                reward := div(
                    mul(
                        mul(
                            mul(1000000000000000000, blocksDefeated),
                            bossMultiplier
                        ),
                        and(
                            mload(raider),
                            0xffffffffffffffffffffffffffffffffffffffffffffffffffffffff
                        )
                    ),
                    1000000000000000000
                )
            }
        }
    }
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/proxy/utils/Initializable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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]
 * ```
 * 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. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = _setInitializedVersion(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.
     *
     * `initializer` is equivalent to `reinitializer(1)`, so 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.
     *
     * 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.
     */
    modifier reinitializer(uint8 version) {
        bool isTopLevelCall = _setInitializedVersion(version);
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _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.
     */
    function _disableInitializers() internal virtual {
        _setInitializedVersion(type(uint8).max);
    }

    function _setInitializedVersion(uint8 version) private returns (bool) {
        // If the contract is initializing we ignore whether _initialized is set in order to support multiple
        // inheritance patterns, but we only do this in the context of a constructor, and for the lowest level
        // of initializers, because in other contexts the contract may have been reentered.
        if (_initializing) {
            require(
                version == 1 && !AddressUpgradeable.isContract(address(this)),
                "Initializable: contract is already initialized"
            );
            return false;
        } else {
            require(_initialized < version, "Initializable: contract is already initialized");
            _initialized = version;
            return true;
        }
    }
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/access/AccessControlUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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:
 *
 * ```
 * 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}:
 *
 * ```
 * 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.
 */
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(uint160(account), 20),
                        " 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.
     */
    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.
     */
    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`.
     */
    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.
     *
     * [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.
     */
    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.
     */
    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;
}

// File: src/interfaces/IConfetti.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IConfetti is IERC20 {
    function mint(address to, uint256 amount) external;

    function burn(uint256 amount) external;
}

// File: src/interfaces/IParty.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "../lib/Stats.sol";

interface IParty {
    event Equipped(address indexed user, uint8 item, uint8 slot, uint256 id);

    event Unequipped(address indexed user, uint8 item, uint8 slot, uint256 id);

    event DamageUpdated(address indexed user, uint32 damageCurr);

    struct PartyData {
        uint256 hero;
        mapping(uint256 => uint256) fighters;
    }

    struct Action {
        ActionType action;
        uint256 id;
        uint8 slot;
    }

    enum Property {
        HERO,
        FIGHTER
    }

    enum ActionType {
        UNEQUIP,
        EQUIP
    }

    function act(
        Action[] calldata heroActions,
        Action[] calldata fighterActions
    ) external;

    function equip(
        Property item,
        uint256 id,
        uint8 slot
    ) external;

    function unequip(Property item, uint8 slot) external;

    function enhance(
        Property item,
        uint8 slot,
        uint256 burnTokenId
    ) external;

    function getUserHero(address user) external view returns (uint256);

    function getUserFighters(address user)
        external
        view
        returns (uint256[] memory);

    function getDamage(address user) external view returns (uint32);
}

// File: src/interfaces/IRaid.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IRaid {
    struct Round {
        uint16 boss;
        uint32 roll;
        uint32 startBlock;
        uint32 finalBlock;
    }

    struct Raider {
        uint32 dpb;
        uint32 startedAt;
        uint32 startBlock;
        uint32 startRound;
        uint32 startSnapshot;
        uint256 pendingRewards;
    }

    struct Boss {
        uint32 weight;
        uint32 blockHealth;
        uint128 multiplier;
    }

    struct Snapshot {
        uint32 initialBlock;
        uint32 initialRound;
        uint32 finalBlock;
        uint32 finalRound;
        uint256 attackDealt;
    }

    struct RaidData {
        uint16 boss;
        uint32 roundId;
        uint32 health;
        uint32 maxHealth;
        uint256 seed;
    }

    function updateDamage(address user, uint32 _dpb) external;
}

// File: src/interfaces/ISeeder.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "../lib/Randomness.sol";

interface ISeeder {
    event Requested(address indexed origin, uint256 indexed identifier);

    event Seeded(bytes32 identifier, uint256 randomness);

    function getIdReferenceCount(
        bytes32 randomnessId,
        address origin,
        uint256 startIdx
    ) external view returns (uint256);

    function getIdentifiers(
        bytes32 randomnessId,
        address origin,
        uint256 startIdx,
        uint256 count
    ) external view returns (uint256[] memory);

    function requestSeed(uint256 identifier) external;

    function getSeed(address origin, uint256 identifier)
        external
        view
        returns (uint256);

    function getSeedSafe(address origin, uint256 identifier)
        external
        view
        returns (uint256);

    function executeRequestMulti() external;

    function isSeeded(address origin, uint256 identifier)
        external
        view
        returns (bool);

    function setFee(uint256 fee) external;

    function getFee() external view returns (uint256);

    function getData(address origin, uint256 identifier)
        external
        view
        returns (Randomness.SeedData memory);
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/AddressUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/access/IAccessControlUpgradeable.sol



// 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;
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/ContextUpgradeable.sol



// 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;
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/StringsUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @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] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/introspection/ERC165Upgradeable.sol



// 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;
}

// File: lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// File: src/lib/Stats.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

library Stats {
    struct HeroStats {
        uint8 dmgMultiplier;
        uint8 partySize;
        uint8 enhancement;
    }

    struct FighterStats {
        uint32 dmg;
        uint8 enhancement;
    }

    struct EquipmentStats {
        uint32 dmg;
        uint8 dmgMultiplier;
        uint8 slot;
    }
}

// File: src/lib/Randomness.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

library Randomness {
    struct SeedData {
        uint256 batch;
        bytes32 randomnessId;
    }
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/introspection/IERC165Upgradeable.sol



// 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);
}