// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import "@openzeppelin/contracts-upgradeable/utils/structs/EnumerableSetUpgradeable.sol";
import "../../acl/direct/IACL.sol";
import "../universe-token/IUniverseToken.sol";

/**
 * @title Universe Registry storage contract.
 */
abstract contract UniverseRegistryStorage {
    /**
     * @dev Universe parameters structure.
     * @param name Name of the universe.
     * @param paymentTokens Array of universe payment tokens.
     * @param paymentTokensRegistry Mapping from address of payment token to its enablement status.
     */
    struct Universe {
        string name;
        EnumerableSetUpgradeable.AddressSet paymentTokens;
        mapping(address => bool) paymentTokensRegistry;
    }

    /**
     * @dev ACL contract address.
     */
    IACL internal _aclContract;

    /**
     * @dev Universe token address.
     */
    IUniverseToken internal _universeToken;

    /**
     * @dev Universe token base URI.
     */
    string internal _baseURI;

    /**
     * @dev Mapping from token ID to the Universe structure.
     */
    mapping(uint256 => Universe) internal _universes;
}