// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

// interfaces

// libraries
import {EnumerableSet} from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";

// contracts

library EntitlementCheckerStorage {
    // keccak256(abi.encode(uint256(keccak256("facets.entitlement.checker.storage")) - 1)) &
    // ~bytes32(uint256(0xff))
    bytes32 internal constant STORAGE_SLOT =
        0x180c1d0b9e5eeea9f2f078bc2712cd77acc6afea03b37705abe96dda6f602600;

    struct Layout {
        EnumerableSet.AddressSet nodes;
        mapping(address node => address operator) operatorByNode;
    }

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}