Make MLibraryPlaylist conform to PlayableMusicItem

Sources/MusadoraKit/Library/LibrarySong.swift

@@ -145,7 +145,6 @@ public extension MLibrary {
     return try await song.with(properties, preferredSource: .library)
   }
 
-#if compiler(>=5.7)
   /// Access the total number of songs in the user's library.
   ///
   /// Use this property to retrieve the total number of songs in the user's library.
@@ -158,43 +157,26 @@ public extension MLibrary {
   ///
   /// - Returns: An `Int` representing the total number of songs in the user's library.
   /// - Throws: An error if the retrieval fails, such as access restrictions or unavailable platform.
-  @available(iOS 16.0, tvOS 16.0, watchOS 9.0, macOS 14.0, macCatalyst 17.0, *)
   static var songsCount: Int {
     get async throws {
-      let request = MusicLibraryRequest<Song>()
-      let response = try await request.response()
-      return response.items.count
-    }
-  }
-#else
-  /// Access the total number of songs in the user's library.
-  ///
-  /// Use this property to retrieve the total number of songs in the user's library.
-  /// The property returns an integer value representing the count of songs.
-  ///
-  /// Example usage:
-  ///
-  ///     let count = try await MLibrary.songsCount
-  ///     print("Total number of songs in the library: \(count)")
-  ///
-  /// - Returns: An `Int` representing the total number of songs in the user's library.
-  /// - Throws: An error if the retrieval fails, such as access restrictions or unavailable platform.
-  @available(macOS, unavailable)
-  @available(macCatalyst, unavailable)
-  @available(tvOS, unavailable)
-  @available(watchOS, unavailable)
-  static var songsCount: Int {
-    get async throws {
-      if let items = MPMediaQuery.songs().items {
-        return items.count
+      if #available(iOS 16.0, tvOS 16.0, watchOS 9.0, macOS 14.0, macCatalyst 17.0, *) {
+        let request = MusicLibraryRequest<Song>()
+        let response = try await request.response()
+        return response.items.count
       } else {
-        throw MediaPlayError.notFound(for: "songs")
+#if os(iOS)
+        if let items = MPMediaQuery.songs().items {
+          return items.count
+        } else {
+          throw MediaPlayError.notFound(for: "songs")
+        }
+#else
+        throw MediaPlayError.platformNotSupported
+#endif
       }
     }
   }
 
-#endif
-
   /// Taken from https://github.com/marcelmendesfilho/MusadoraKit/blob/feature/improvements/Sources/MusadoraKit/Library/LibrarySong.swift
   /// Thanks @marcelmendesfilho!
   ///

Sources/MusadoraKit/Library/MLibraryPlaylist.swift

@@ -14,7 +14,7 @@ public struct MLibraryPlaylist: Codable, MusicItem {
   public let id: MusicItemID
 
   /// The attributes of the playlist.
-  public let attributes: Attributes
+  public var attributes: Attributes
 
   /// A structure containing the attributes of a playlist.
   public struct Attributes: Codable, Sendable {
@@ -32,7 +32,7 @@ public struct MLibraryPlaylist: Codable, MusicItem {
     public let hasCatalog: Bool
 
     /// The play parameters for the playlist.
-    public let playParams: PlayParameters
+    public var playParams: MPlayParameters
 
     /// The description of the playlist, if available.
     public let description: Description?
@@ -49,7 +49,7 @@ public struct MLibraryPlaylist: Codable, MusicItem {
   }
 
   /// A structure representing the play parameters of a playlist.
-  public struct PlayParameters: Codable, Sendable {
+  public struct MPlayParameters: Codable, Sendable {
 
     /// The identifier of the playlist.
     public let id: MusicItemID
@@ -71,3 +71,18 @@ public struct MLibraryPlaylist: Codable, MusicItem {
     attributes.playParams.globalID?.rawValue
   }
 }
+
+@available(macOS 14.0, *)
+@available(watchOS, unavailable)
+extension MLibraryPlaylist: PlayableMusicItem {
+  public var playParameters: PlayParameters? {
+    get {
+      let parameters = try? JSONEncoder().encode(attributes.playParams)
+
+      guard let parameters else { return nil }
+
+      let playParams = try? JSONDecoder().decode(PlayParameters.self, from: parameters)
+      return playParams
+    }
+  }
+}

Sources/MusadoraKit/Models/MusadoraKitError.swift

@@ -27,13 +27,16 @@ extension RatingsError: CustomStringConvertible {
 /// An enum representing the possible errors that can occur when playing a piece of media.
 public enum MediaPlayError: Error, Equatable {
   case notFound(for: String)
+  case platformNotSupported
 }
 
 extension MediaPlayError: CustomStringConvertible {
   public var description: String {
     switch self {
       case let .notFound(item):
         return "Not able to count the music items for \(item)."
+      case .platformNotSupported:
+        return "This is only available on iOS."
     }
   }
 }