Resolve various connection issues

QueueCube/Backend/API.swift

@@ -54,10 +54,12 @@ struct NowPlayingInfo: Codable
     let volume: Int
 }
 
-struct API
+actor API
 {
     let baseURL: URL
     
+    private var pingTask: Task<(), any Swift.Error>? = nil
+    
     init(baseURL: URL) {
         self.baseURL = baseURL
     }
@@ -168,17 +170,20 @@ struct API
     }
     
     public func events() async throws -> AsyncStream<StreamEvent> {
+        let requestBuilder: () -> RequestBuilder = request
+        
         return AsyncStream { continuation in
-            var websocketTask: URLSessionWebSocketTask = spawnWebsocketTask(with: continuation)
+            let websocketTask: URLSessionWebSocketTask = API.spawnWebsocketTask(requestBuilder: requestBuilder, with: continuation)
             
             Task {
-                while true {
+                var pingLoopEnabled = true
+                while pingLoopEnabled {
                     try await Task.sleep(for: .seconds(5))
                     
                     websocketTask.sendPing { error in
                         if let error {
-                            notifyError(error, continuation: continuation)
-                            websocketTask = spawnWebsocketTask(with: continuation)
+                            API.notifyError(error, continuation: continuation)
+                            pingLoopEnabled = false 
                         } else {
                             continuation.yield(.event(Event(type: .receivedWebsocketPong)))
                         }
@@ -188,11 +193,12 @@ struct API
         }
     }
     
-    private func spawnWebsocketTask(
+    private static func spawnWebsocketTask(
+        requestBuilder: () -> RequestBuilder,
         with continuation: AsyncStream<StreamEvent>.Continuation
     ) -> URLSessionWebSocketTask
     {
-        let url = request()
+        let url = requestBuilder()
             .path("/events")
             .websocket()
         
@@ -225,8 +231,9 @@ struct API
         return websocketTask
     }
     
-    private func notifyError(_ error: any Swift.Error, continuation: AsyncStream<StreamEvent>.Continuation) {
+    private static func notifyError(_ error: any Swift.Error, continuation: AsyncStream<StreamEvent>.Continuation) {
         print("Websocket Error: \(error)")
+        
         var shouldNotifyObservers = true
         let nsError = error as NSError
         if nsError.code == 53 {

QueueCube/Views/ContentView.swift

@@ -98,10 +98,17 @@ extension ContentView
             for await streamEvent in try await api.events() {
                 switch streamEvent {
                     case .event(let event):
-                        model.connectionError = nil
+                        await clearConnectionErrorIfNecessary()
                         await handle(event: event)
                     case .error(let error):
                         model.connectionError = error
+                        
+                        Task { @MainActor in
+                            try await Task.sleep(for: .seconds(1.0))
+                            websocketRestartTrigger += 1
+                        }
+                    
+                        break
                 }
             }
         } catch {
@@ -128,10 +135,14 @@ extension ContentView
         
         case .receivedWebsocketPong:
             // This means we're online.
-            if model.connectionError != nil {
-                model.connectionError = nil
-                await refresh([.playlist, .nowPlaying, .favorites])
-            }
+            await clearConnectionErrorIfNecessary()
+        }
+    }
+    
+    private func clearConnectionErrorIfNecessary() async {
+        if model.connectionError != nil {
+            model.connectionError = nil
+            await refresh([.playlist, .nowPlaying, .favorites])
         }
     }
     

QueueCube/Views/MainView.swift

@@ -149,10 +149,14 @@ class MainViewModel
         withObservationTracking {
             _ = nowPlayingViewModel.volume
         } onChange: { [weak self] in
+            guard let self else { return }
+            
+            let isRefreshing = isRefreshingFromAPI
             Task {
-                guard let self else { return }
-                await self.withModificationsViaAPI { api in
-                    try await api.setVolume(self.nowPlayingViewModel.volume)
+                if !isRefreshing {
+                    await self.withModificationsViaAPI { api in
+                        try await api.setVolume(self.nowPlayingViewModel.volume)
+                    }
                 }
                 
                 await MainActor.run { self.observeNowPlayingModel() }

QueueCube/Views/NowPlayingMiniView.swift

@@ -12,7 +12,11 @@ struct NowPlayingMiniView: View {
     let onTap: () -> Void
     
     @GestureState private var tapGestureState = false
-    private var nothingQueued: Bool { model.title == nil && model.subtitle == nil }
+    
+    private var nothingQueued: Bool {
+        guard let title = model.title, let subtitle = model.subtitle else { return true }
+        return title.isEmpty && subtitle.isEmpty
+    }
     
     var body: some View {
         let playPauseImageName = model.isPlaying ? "pause.fill" : "play.fill"
@@ -26,14 +30,14 @@ struct NowPlayingMiniView: View {
 
         HStack {
             VStack(alignment: .leading) {
-                if let title = model.title {
+                if let title = model.title, !title.isEmpty {
                     Text(title)
                         .font(.caption)
                         .lineLimit(1)
                         .bold()
                 }
                 
-                if let subtitle = model.subtitle {
+                if let subtitle = model.subtitle, !subtitle.isEmpty {
                     Text(subtitle)
                         .lineLimit(1)
                         .font(.caption)

QueueCube/Views/Settings View/AddServerView.swift

@@ -175,7 +175,10 @@ struct AddServerView: View
                     _ = try await api.fetchNowPlayingInfo()
                     
                     self.validationState = .valid
-                    self.serverURL = self.validationURL
+                    
+                    if validationURL != serverURL {
+                        self.serverURL = self.validationURL
+                    }
                 } catch {
                     print("Validation failed: \(error)")