maintain swift 5.8 compatibility. (#793)

Sources/EeveeSpotify/Lyrics/CustomLyrics.x.swift

@@ -170,13 +170,22 @@ private func loadLyricsForCurrentTrack() throws {
     let options = UserDefaults.lyricsOptions
     var source = UserDefaults.lyricsSource
     
-    var repository: LyricsRepository = switch source {
-        case .genius: geniusLyricsRepository
-        case .lrclib: LrclibLyricsRepository.shared
-        case .musixmatch: MusixmatchLyricsRepository.shared
-        case .petit: petitLyricsRepository
-        case .notReplaced: throw LyricsError.invalidSource
+    // switched to swift 5.8 syntax to compile with Theos on Linux.
+    var repository: LyricsRepository
+
+    switch source {
+    case .genius:
+        repository = geniusLyricsRepository
+    case .lrclib:
+        repository = LrclibLyricsRepository.shared
+    case .musixmatch:
+        repository = MusixmatchLyricsRepository.shared
+    case .petit:
+        repository = petitLyricsRepository
+    case .notReplaced:
+        throw LyricsError.invalidSource
     }
+
     
     let lyricsDto: LyricsDto
     

Sources/EeveeSpotify/Lyrics/Models/LyricsError.swift

@@ -9,15 +9,23 @@ enum LyricsError: Error, CustomStringConvertible {
     case unknownError
     case invalidSource
     
+    // swift 5.8 compatible
     var description: String {
         switch self {
-        case .noSuchSong: "no_such_song".localized
-        case .musixmatchRestricted: "musixmatch_restricted".localized
-        case .invalidMusixmatchToken: "invalid_musixmatch_token".localized
-        case .decodingError: "decoding_error".localized
-        case .noCurrentTrack: "no_current_track".localized
-        case .unknownError: "unknown_error".localized
-        case .invalidSource: ""
+        case .noSuchSong:
+            return "no_such_song".localized
+        case .musixmatchRestricted:
+            return "musixmatch_restricted".localized
+        case .invalidMusixmatchToken:
+            return "invalid_musixmatch_token".localized
+        case .decodingError:
+            return "decoding_error".localized
+        case .noCurrentTrack:
+            return "no_current_track".localized
+        case .unknownError:
+            return "unknown_error".localized
+        case .invalidSource:
+            return ""
         }
     }
 }

Sources/EeveeSpotify/Lyrics/Models/Settings/LyricsSource.swift

@@ -11,15 +11,22 @@ enum LyricsSource: Int, CaseIterable, CustomStringConvertible {
         return [.genius, .lrclib, .musixmatch, .petit]
     }
 
+    // swift 5.8 compatible
     var description: String {
-        switch self {
-        case .genius: "Genius"
-        case .lrclib: "LRCLIB"
-        case .musixmatch: "Musixmatch"
-        case .petit: "PetitLyrics"
-        case .notReplaced: "Spotify"
-        }
+    switch self {
+    case .genius:
+        return "Genius"
+    case .lrclib:
+        return "LRCLIB"
+    case .musixmatch:
+        return "Musixmatch"
+    case .petit:
+        return "PetitLyrics"
+    case .notReplaced:
+        return "Spotify"
     }
+    }
+
     
     var isReplacingLyrics: Bool { self != .notReplaced }