allstarr/allstarr/Services/Common/SpotifyPlaylistScopeResolver.cs

using allstarr.Models.Settings;

namespace allstarr.Services.Common;

public static class SpotifyPlaylistScopeResolver
{
    public static SpotifyPlaylistConfig? ResolveConfig(
        SpotifyImportSettings settings,
        string playlistName,
        string? userId = null,
        string? jellyfinPlaylistId = null)
    {
        if (!string.IsNullOrWhiteSpace(jellyfinPlaylistId))
        {
            var byJellyfinId = settings.GetPlaylistByJellyfinId(jellyfinPlaylistId.Trim());
            if (byJellyfinId != null)
            {
                return byJellyfinId;
            }
        }

        return settings.GetPlaylistByName(playlistName, userId, jellyfinPlaylistId);
    }

    public static string? GetUserId(SpotifyPlaylistConfig? playlist, string? fallbackUserId = null)
    {
        if (!string.IsNullOrWhiteSpace(playlist?.UserId))
        {
            return playlist.UserId.Trim();
        }

        // A configured playlist with no explicit owner is global. Do not
        // accidentally scope its caches to whichever Jellyfin user made
        // the current request.
        if (playlist != null)
        {
            return null;
        }

        return string.IsNullOrWhiteSpace(fallbackUserId) ? null : fallbackUserId.Trim();
    }

    public static string? GetScopeId(SpotifyPlaylistConfig? playlist, string? fallbackScopeId = null)
    {
        if (!string.IsNullOrWhiteSpace(playlist?.JellyfinId))
        {
            return playlist.JellyfinId.Trim();
        }

        if (!string.IsNullOrWhiteSpace(playlist?.Id))
        {
            return playlist.Id.Trim();
        }

        return string.IsNullOrWhiteSpace(fallbackScopeId) ? null : fallbackScopeId.Trim();
    }
}