song-of-the-day/song_of_the_day/Data/SmartPlaylistDefinition.cs

using Microsoft.EntityFrameworkCore;

[PrimaryKey(nameof(Id))]
public class SmartPlaylistDefinition
{
    public int Id { get; set; }
    public string? Title { get; set; }
    public string? Description { get; set; }
    public User? CreatedBy { get; set; }
    public bool IncludesUnCategorizedSongs { get; set; }
    public bool IncludesLikedSongs { get; set; }
    public List<SuggestionHelper>? Categories { get; set; }
    public string? SpotifyPlaylistId { get; set; }

    public List<Song>? ExplicitlyIncludedSongs { get; set; }
    public List<Song>? ExplicitlyExcludedSongs { get; set; }

    public bool IsThisUsersLikedSongsPlaylist
    {
        get
        {
            return IncludesLikedSongs == true
                    && IncludesUnCategorizedSongs == false
                    && (ExplicitlyExcludedSongs == null || ExplicitlyExcludedSongs.Count == 0)
                    && (ExplicitlyIncludedSongs == null || ExplicitlyIncludedSongs.Count == 0)
                    && (Categories == null || Categories.Count == 0);
        }
    }

}