[WIP] [iOS & tvOS] Internal Text Subtitle Offset

Shared/Extensions/JellyfinAPI/MediaStream.swift

@@ -230,28 +230,48 @@ extension [MediaStream] {
         var orderedInternal: [MediaStream] = []
 
         let subtitleInternal = internalTracks.filter { $0.type == .subtitle }
+        let videoInternal = internalTracks.filter { $0.type == .video }
+        let audioInternal = internalTracks.filter { $0.type == .audio }
 
         // TODO: Do we need this for other media types? I think movies/shows we only care about video, audio, and subtitles.
         let otherInternal = internalTracks.filter { $0.type != .video && $0.type != .audio && $0.type != .subtitle }
 
         if streamType == .transcode {
-            // Only include the first video and first audio track for transcode.
-            let videoInternal = internalTracks.filter { $0.type == .video }
-            let audioInternal = internalTracks.filter { $0.type == .audio }
-
             if let firstVideo = videoInternal.first {
                 orderedInternal.append(firstVideo)
             }
             if let selectedAudio = audioInternal.first(where: { $0.index == selectedAudioStreamIndex }) {
                 orderedInternal.append(selectedAudio)
             }
 
-            orderedInternal += subtitleInternal
+            let externalSubtitles = externalTracks.filter { $0.type == .subtitle }
+
+            /// Transcodes with only internal text-subtitles the first and last track switch places???
+            if subtitleInternal.count > 1 &&
+                externalSubtitles.isEmpty &&
+                subtitleInternal == subtitleInternal.filter({ $0.isTextSubtitleStream == true })
+            {
+                /// Remove invalid subtitles for transcodes
+                var reorderedSubtitleInternal = subtitleInternal.filter { $0.isSupportsExternalStream == true }
+
+                let firstDeliveryURL = subtitleInternal.first?.deliveryURL
+                let lastDeliveryURL = subtitleInternal.last?.deliveryURL
+
+                if var firstItem = reorderedSubtitleInternal.first, var lastItem = reorderedSubtitleInternal.last {
+                    firstItem.deliveryURL = lastDeliveryURL
+                    lastItem.deliveryURL = firstDeliveryURL
+
+                    reorderedSubtitleInternal[0] = firstItem
+                    reorderedSubtitleInternal[reorderedSubtitleInternal.count - 1] = lastItem
+                }
+
+                orderedInternal += reorderedSubtitleInternal
+            } else {
+                orderedInternal += subtitleInternal.filter { $0.isSupportsExternalStream == true }
+            }
+
             orderedInternal += otherInternal
         } else {
-            let videoInternal = internalTracks.filter { $0.type == .video }
-            let audioInternal = internalTracks.filter { $0.type == .audio }
-
             orderedInternal = videoInternal + audioInternal + subtitleInternal + otherInternal
         }