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

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

library TippingStorage {
    // keccak256(abi.encode(uint256(keccak256("spaces.facets.tipping.storage")) - 1)) &
    // ~bytes32(uint256(0xff))
    bytes32 internal constant STORAGE_SLOT =
        0xb6cb334a9eea0cca2581db4520b45ac6f03de8e3927292302206bb82168be300;

    struct TippingStats {
        uint256 totalTips;
        uint256 tipAmount;
    }

    struct Layout {
        EnumerableSet.AddressSet currencies;
        mapping(uint256 tokenId => mapping(address currency => uint256 amount)) tipsByCurrencyByTokenId;
        mapping(address currency => TippingStats) tippingStatsByCurrency;
        mapping(address wallet => mapping(address currency => TippingStats)) tippingStatsByCurrencyByWallet;
    }

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