Better loading and handling streams

Model/Accounts/InstancesModel.swift

@@ -6,6 +6,14 @@ final class InstancesModel: ObservableObject {
         Defaults[.instances]
     }
 
+    static var forPlayer: Instance? {
+        guard let id = Defaults[.playerInstanceID] else {
+            return nil
+        }
+
+        return InstancesModel.find(id)
+    }
+
     var lastUsed: Instance? {
         guard let id = Defaults[.lastInstanceID] else {
             return nil

Model/Applications/InvidiousAPI.swift

@@ -27,16 +27,14 @@ final class InvidiousAPI: Service, ObservableObject, VideosAPI {
         self.account = account
         signedIn = false
 
-        if account.anonymous {
-            validInstance = true
-            return
-        }
-
-        validInstance = false
+        validInstance = account.anonymous
 
         configure()
+
+        if !account.anonymous {
             validate()
         }
+    }
 
     func validate() {
         validateInstance()

Model/Player/PlayerModel.swift

@@ -26,7 +26,7 @@ final class PlayerModel: ObservableObject {
     @Published var stream: Stream?
     @Published var currentRate: Float = 1.0 { didSet { player.rate = currentRate } }
 
-    @Published var availableStreams = [Stream]() { didSet { rebuildTVMenu() } }
+    @Published var availableStreams = [Stream]() { didSet { handleAvailableStreamsChange() }}
     @Published var streamSelection: Stream? { didSet { rebuildTVMenu() } }
 
     @Published var queue = [PlayerQueueItem]() { didSet { Defaults[.queue] = queue } }
@@ -171,10 +171,24 @@ final class PlayerModel: ObservableObject {
         }
     }
 
-    private func pauseOnPlayerDismiss() {
-        if !playingInPictureInPicture, !presentingPlayer {
-            DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
-                self.pause()
+    private func handleAvailableStreamsChange() {
+        rebuildTVMenu()
+
+        guard stream.isNil else {
+            return
+        }
+
+        guard let stream = preferredStream(availableStreams) else {
+            return
+        }
+
+        streamSelection = stream
+        playStream(
+            stream,
+            of: currentVideo!,
+            preservingTime: !currentItem.playbackTime.isNil
+        )
+    }
             }
         }
     }

Model/Player/PlayerQueue.swift

@@ -54,21 +54,10 @@ extension PlayerModel {
         preservedTime = currentItem.playbackTime
         restoreLoadedChannel()
 
-        loadAvailableStreams(currentVideo!) { streams in
-            guard let stream = self.preferredStream(streams) else {
-                return
+        loadAvailableStreams(currentVideo!)
     }
 
-            self.streamSelection = stream
-            self.playStream(
-                stream,
-                of: self.currentVideo!,
-                preservingTime: !self.currentItem.playbackTime.isNil
-            )
-        }
-    }
-
-    private func preferredStream(_ streams: [Stream]) -> Stream? {
+    func preferredStream(_ streams: [Stream]) -> Stream? {
         let quality = Defaults[.quality]
         var streams = streams
 

Model/Player/PlayerStreams.swift

@@ -15,21 +15,20 @@ extension PlayerModel {
         availableStreams.sorted(by: streamsSorter)
     }
 
-    func loadAvailableStreams(
-        _ video: Video,
-        completionHandler: @escaping ([Stream]) -> Void = { _ in }
-    ) {
+    func loadAvailableStreams(_ video: Video) {
         availableStreams = []
-        var instancesWithLoadedStreams = [Instance]()
+        let playerInstance = InstancesModel.forPlayer ?? InstancesModel.all.first
 
-        InstancesModel.all.forEach { instance in
-            fetchStreams(instance.anonymous.video(video.videoID), instance: instance, video: video) { _ in
-                self.completeIfAllInstancesLoaded(
-                    instance: instance,
-                    streams: self.availableStreams,
-                    instancesWithLoadedStreams: &instancesWithLoadedStreams,
-                    completionHandler: completionHandler
-                )
+        guard !playerInstance.isNil else {
+            return
+        }
+
+        logger.info("loading streams from \(playerInstance!.description)")
+
+        fetchStreams(playerInstance!.anonymous.video(video.videoID), instance: playerInstance!, video: video) { _ in
+            InstancesModel.all.filter { $0 != playerInstance }.forEach { instance in
+                self.logger.info("loading streams from \(instance.description)")
+                self.fetchStreams(instance.anonymous.video(video.videoID), instance: instance, video: video)
             }
         }
     }
@@ -45,25 +44,13 @@ extension PlayerModel {
             .onSuccess { response in
                 if let video: Video = response.typedContent() {
                     self.availableStreams += self.streamsWithInstance(instance: instance, streams: video.streams)
+                } else {
+                    self.logger.critical("no streams available from \(instance.description)")
                 }
             }
             .onCompletion(onCompletion)
     }
 
-    private func completeIfAllInstancesLoaded(
-        instance: Instance,
-        streams: [Stream],
-        instancesWithLoadedStreams: inout [Instance],
-        completionHandler: @escaping ([Stream]) -> Void
-    ) {
-        instancesWithLoadedStreams.append(instance)
-        rebuildTVMenu()
-
-        if InstancesModel.all.count == instancesWithLoadedStreams.count {
-            completionHandler(streams.sorted { $0.kind < $1.kind })
-        }
-    }
-
     func streamsWithInstance(instance: Instance, streams: [Stream]) -> [Stream] {
         streams.map { stream in
             stream.instance = instance