[#39] Protocol settings. Saving settings improvement

lib/data_model.dart

@@ -37,8 +37,8 @@ class HassioDataModel {
     } else {
       //Fetch timeout timer
       _fetchingTimer = Timer(Duration(seconds: 10), () {
-        _fetchCompleter.completeError({"message": "Data fetching timeout."});
         closeConnection();
+        _fetchCompleter.completeError({"message": "Data fetching timeout."});
       });
       _fetchCompleter = new Completer();
       _reConnectSocket().then((r) {
@@ -51,11 +51,11 @@ class HassioDataModel {
     return _fetchCompleter.future;
   }
 
-  void closeConnection() {
-    if (_hassioChannel != null) {
-      _hassioChannel.sink.close();
-      _hassioChannel = null;
+  closeConnection() {
+    if (_hassioChannel?.closeCode == null) {
+      _hassioChannel.sink?.close();
     }
+    _hassioChannel = null;
   }
 
   Future _reConnectSocket() {
@@ -64,7 +64,7 @@ class HassioDataModel {
       debugPrint("Socket connecting...");
       _hassioChannel = IOWebSocketChannel.connect(_hassioAPIEndpoint);
       _hassioChannel.stream.handleError((e) {
-        debugPrint("Socket error: ${e.toString()}");
+        debugPrint("Unhandled socket error: ${e.toString()}");
       });
       _hassioChannel.stream.listen((message) =>
           _handleMessage(_connectionCompleter, message));
@@ -93,11 +93,8 @@ class HassioDataModel {
     var data = json.decode(message);
     debugPrint("[Received]Message type: ${data['type']}");
     if (data["type"] == "auth_required") {
-      debugPrint("   sending auth!");
       _sendMessageRaw('{"type": "auth","api_password": "$_hassioPassword"}');
     } else if (data["type"] == "auth_ok") {
-      debugPrint("   auth done");
-      debugPrint("Connection done.");
       _sendSubscribe();
       connectionCompleter.complete();
     } else if (data["type"] == "auth_invalid") {

lib/main.dart

@@ -76,7 +76,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
 
   _init() async {
     SharedPreferences prefs = await SharedPreferences.getInstance();
-    String _hassioAPIEndpoint = "wss://" +
+    String _hassioAPIEndpoint = prefs.getString('hassio-protocol')+"://" +
         prefs.getString('hassio-domain') +
         ":" +
         prefs.getString('hassio-port') +
@@ -318,6 +318,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
                 child: Icon(
                     _createMDIfromCode(MaterialDesignIcons.getCustomIconByName("mdi:home-assistant")),
                     size: 40.0,
+                    color: _dataModelErrorMessage == null ? Colors.blue : Colors.redAccent,
                 ),
               ),
             ]

lib/settings.dart

@@ -13,6 +13,7 @@ class _SettingsPageState extends State<SettingsPage> {
   String _hassioDomain = "";
   String _hassioPort = "";
   String _hassioPassword = "";
+  String _socketProtocol = "wss";
 
   @override
   void initState() {
@@ -27,28 +28,22 @@ class _SettingsPageState extends State<SettingsPage> {
       _hassioDomain = prefs.getString("hassio-domain");
       _hassioPort = prefs.getString("hassio-port");
       _hassioPassword = prefs.getString("hassio-password");
+      _socketProtocol = prefs.getString("hassio-protocol");
     });
   }
 
   _saveSettings() async {
+    debugPrint("Saving settings....");
     SharedPreferences prefs = await SharedPreferences.getInstance();
-
-    setState(() {
     prefs.setString("hassio-domain", _hassioDomain);
     prefs.setString("hassio-port", _hassioPort);
     prefs.setString("hassio-password", _hassioPassword);
-      _hassioPassword = prefs.getString('hassio-password');
-    });
+    prefs.setString("hassio-protocol", _socketProtocol);
+    debugPrint("Done saving settings....");
   }
 
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
     return new Scaffold(
       appBar: new AppBar(
         leading: IconButton(icon: Icon(Icons.arrow_back), onPressed: (){
@@ -62,6 +57,20 @@ class _SettingsPageState extends State<SettingsPage> {
       body: ListView(
         padding: const EdgeInsets.all(20.0),
         children: <Widget>[
+          new Row(
+            children: [
+              Text("HTTPS"),
+              Switch(
+                value: (_socketProtocol == "wss"),
+                onChanged: (value) {
+                  setState(() {
+                    _socketProtocol = value ? "wss" : "ws";
+                  });
+                  _saveSettings();
+                },
+              )
+            ],
+          ),
           new TextField(
             decoration: InputDecoration(
               labelText: "Home Assistant domain or ip address"
@@ -71,6 +80,7 @@ class _SettingsPageState extends State<SettingsPage> {
             ),
             onChanged: (value) {
               _hassioDomain = value;
+              _saveSettings();
             },
           ),
           new TextField(
@@ -82,6 +92,7 @@ class _SettingsPageState extends State<SettingsPage> {
             ),
             onChanged: (value) {
               _hassioPort = value;
+              _saveSettings();
             },
           ),
           new TextField(
@@ -93,6 +104,7 @@ class _SettingsPageState extends State<SettingsPage> {
             ),
             onChanged: (value) {
               _hassioPassword = value;
+              _saveSettings();
             },
           )
         ],