Refactoring / fixing

lib/api.dart

@@ -177,6 +177,8 @@ class InvenTreeAPI {
      * e.g. http://127.0.0.1:8000
      */
 
+    if (profile == null) return false;
+
     String address = profile.server.trim();
     String username = profile.username.trim();
     String password = profile.password.trim();
@@ -212,10 +214,13 @@ class InvenTreeAPI {
       print("Error connecting to server: ${error.toString()}");
 
       if (error is SocketException) {
-        showServerError(context, "Connection Refused");
+        print("Error: socket exception: ${error.toString()}");
+        // TODO - Display error dialog!!
+        //showServerError(context, "Connection Refused");
         return null;
       } else if (error is TimeoutException) {
-        showTimeoutDialog(context);
+        // TODO - Display timeout dialog here
+        //showTimeoutDialog(context);
         return null;
       } else {
         // Unknown error type - re-throw the error and Sentry will catch it
@@ -303,18 +308,25 @@ class InvenTreeAPI {
     };
   }
 
-  Future<bool> connectToServer(BuildContext context) async {
+  bool disconnectFromServer() {
-    print("InvenTreeAPI().connectToServer()");
+    print("InvenTreeAPI().disconnectFromServer()");
 
-    // Clear connection flag
     _connected = false;
-
+    _connecting = false;
-    // Clear token
     _token = '';
+    profile = null;
+  }
+
+  Future<bool> connectToServer(BuildContext context) async {
+
+    // Ensure server is first disconnected
+    disconnectFromServer();
 
     // Load selected profile
     profile = await UserProfileDBManager().getSelectedProfile();
 
+    print("API Profile: ${profile.toString()}");
+
     if (profile == null) {
       await showErrorDialog(
           context,
@@ -326,13 +338,13 @@ class InvenTreeAPI {
 
     _connecting = true;
 
-    _connect(context).then((result) {
+    bool result = await _connect(context);
 
-      print("_connect() returned result: ${result}");
+    print("_connect() returned result: ${result}");
-      _connecting = false;
 
-      return result;
+    _connecting = false;
-    });
+
+    return result;
   }
 
   // Perform a PATCH request

lib/settings/login.dart

@@ -1,5 +1,7 @@
 import 'package:InvenTree/widget/dialogs.dart';
 import 'package:InvenTree/widget/fields.dart';
+import 'package:InvenTree/widget/spinner.dart';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
@@ -166,21 +168,20 @@ class _InvenTreeLoginSettingsState extends State<InvenTreeLoginSettingsWidget> {
 
   void _selectProfile(BuildContext context, UserProfile profile) async {
 
-    // Mark currently selected profile as unselected
+    // Disconnect InvenTree
-    final selected = await UserProfileDBManager().getSelectedProfile();
+    InvenTreeAPI().disconnectFromServer();
 
-    selected.selected = false;
+    await UserProfileDBManager().selectProfile(profile.key);
-
-    await UserProfileDBManager().updateProfile(selected);
-
-    profile.selected = true;
-
-    await UserProfileDBManager().updateProfile(profile);
 
     _reload();
 
+    print("CONNECT FROM A");
     // Attempt server login (this will load the newly selected profile
-    InvenTreeAPI().connectToServer(context);
+    InvenTreeAPI().connectToServer(context).then((result) {
+      _reload();
+    });
+
+    _reload();
   }
 
   void _deleteProfile(UserProfile profile) async {
@@ -191,6 +192,10 @@ class _InvenTreeLoginSettingsState extends State<InvenTreeLoginSettingsWidget> {
     Navigator.of(context).pop();
 
     _reload();
+
+    if (InvenTreeAPI().isConnected() && profile.key == InvenTreeAPI().profile.key) {
+      InvenTreeAPI().disconnectFromServer();
+    }
   }
 
   void _updateProfile(UserProfile profile) async {
@@ -201,6 +206,15 @@ class _InvenTreeLoginSettingsState extends State<InvenTreeLoginSettingsWidget> {
     Navigator.of(context).pop();
 
     _reload();
+
+    if (InvenTreeAPI().isConnected() && profile.key == InvenTreeAPI().profile.key) {
+      // Attempt server login (this will load the newly selected profile
+
+      print("Connect froM A");
+      InvenTreeAPI().connectToServer(context).then((result) {
+        _reload();
+      });
+    }
   }
 
   void _addProfile(UserProfile profile) async {
@@ -213,11 +227,45 @@ class _InvenTreeLoginSettingsState extends State<InvenTreeLoginSettingsWidget> {
     _reload();
   }
 
+  Widget _getProfileIcon(UserProfile profile) {
+
+    // Not selected? No icon for you!
+    if (profile == null || !profile.selected) return null;
+
+    // Selected, but (for some reason) not the same as the API...
+    if (InvenTreeAPI().profile == null || InvenTreeAPI().profile.key != profile.key) {
+      return FaIcon(
+        FontAwesomeIcons.questionCircle,
+        color: Color.fromRGBO(250, 150, 50, 1)
+      );
+    }
+
+    // Reflect the connection status of the server
+    if (InvenTreeAPI().isConnected()) {
+      return FaIcon(
+        FontAwesomeIcons.checkCircle,
+        color: Color.fromRGBO(50, 250, 50, 1)
+      );
+    } else if (InvenTreeAPI().isConnecting()) {
+      return Spinner(
+        icon: FontAwesomeIcons.spinner,
+        color: Color.fromRGBO(50, 50, 250, 1),
+      );
+    } else {
+      return FaIcon(
+        FontAwesomeIcons.timesCircle,
+        color: Color.fromRGBO(250, 50, 50, 1),
+      );
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
 
     final Size screenSize = MediaQuery.of(context).size;
 
+    print("Building!");
+
     List<Widget> children = [];
 
     if (profiles != null && profiles.length > 0) {
@@ -228,10 +276,12 @@ class _InvenTreeLoginSettingsState extends State<InvenTreeLoginSettingsWidget> {
           title: Text(
             profile.name,
           ),
-          subtitle: Text(profile.server),
+          tileColor: profile.selected ? Color.fromRGBO(0, 0, 0, 0.05) : null,
-          trailing: profile.selected
+          subtitle: Text("${profile.server}"),
-              ? FaIcon(FontAwesomeIcons.checkCircle)
+          trailing: _getProfileIcon(profile),
-              : null,
+          onTap: () {
+            _selectProfile(context, profile);
+          },
           onLongPress: () {
             showDialog(
                 context: context,
@@ -239,50 +289,40 @@ class _InvenTreeLoginSettingsState extends State<InvenTreeLoginSettingsWidget> {
                   return SimpleDialog(
                     title: Text(profile.name),
                     children: <Widget>[
+                      Divider(),
                       SimpleDialogOption(
                         onPressed: () {
                           Navigator.of(context).pop();
                           _selectProfile(context, profile);
                         },
-                        child: Text(I18N
+                        child: Text(I18N.of(context).profileSelect),
-                            .of(context)
-                            .profileSelect),
                       ),
                       SimpleDialogOption(
                         onPressed: () {
                           Navigator.of(context).pop();
                           _editProfile(context, userProfile: profile);
                         },
-                        child: Text(I18N
+                        child: Text(I18N.of(context).profileEdit),
-                            .of(context)
-                            .profileEdit),
                       ),
                       SimpleDialogOption(
                         onPressed: () {
                           // Navigator.of(context, rootNavigator: true).pop();
                           confirmationDialog(
                               context,
-                              I18N
+                              I18N.of(context).delete,
-                                  .of(context)
-                                  .delete,
                               "Delete this profile?",
                               onAccept: () {
                                 _deleteProfile(profile);
                               }
                           );
                         },
-                        child: Text(I18N
+                        child: Text(I18N.of(context).profileDelete),
-                            .of(context)
-                            .profileDelete),
                       )
                     ],
                   );
                 }
             );
           },
-          onTap: () {
-
-          },
         ));
       }
     } else {

lib/user_profile.dart

@@ -36,13 +36,13 @@ class UserProfile {
   // User ID (will be provided by the server on log-in)
   int user_id;
 
-  factory UserProfile.fromJson(int key, Map<String, dynamic> json) => UserProfile(
+  factory UserProfile.fromJson(int key, Map<String, dynamic> json, bool isSelected) => UserProfile(
     key: key,
     name: json['name'],
     server: json['server'],
     username: json['username'],
     password: json['password'],
-    selected: json['selected'] ?? false,
+    selected: isSelected,
   );
 
   Map<String, dynamic> toJson() => {
@@ -50,33 +50,40 @@ class UserProfile {
     "server": server,
     "username": username,
     "password": password,
-    "selected": selected,
   };
 
   @override
   String toString() {
-    return "${server} - ${username}:${password}";
+    return "<${key}> ${name} : ${server} - ${username}:${password}";
   }
 }
 
 class UserProfileDBManager {
 
-  static const String folder_name = "profiles";
+  final store = StoreRef("profiles");
-
-  final _folder = intMapStoreFactory.store(folder_name);
 
   Future<Database> get _db async => await InvenTreePreferencesDB.instance.database;
 
+  Future<bool> profileNameExists(String name) async {
+
+    final finder = Finder(filter: Filter.equals("name", name));
+
+    final profiles = await store.find(await _db, finder: finder);
+
+    return profiles.length > 0;
+  }
+
   Future addProfile(UserProfile profile) async {
 
-    UserProfile existingProfile = await getProfile(profile.name);
+    // Check if a profile already exists with the name
+    final bool exists = await profileNameExists(profile.name);
 
-    if (existingProfile != null) {
+    if (exists) {
       print("UserProfile '${profile.name}' already exists");
       return;
     }
 
-    int key = await _folder.add(await _db, profile.toJson());
+    int key = await store.add(await _db, profile.toJson());
 
     print("Added user profile <${key}> - '${profile.name}'");
 
@@ -84,23 +91,34 @@ class UserProfileDBManager {
     profile.key = key;
   }
 
+  Future selectProfile(int key) async {
+    /*
+     * Mark the particular profile as selected
+     */
+
+    final result = await store.record("selected").put(await _db, key);
+
+    return result;
+  }
+  
   Future updateProfile(UserProfile profile) async {
     
     if (profile.key == null) {
-      addProfile(profile);
+      await addProfile(profile);
       return;
     }
 
-    final finder = Finder(filter: Filter.byKey(profile.key));
+    final result = await store.record(profile.key).update(await _db, profile.toJson());
-    await _folder.update(await _db, profile.toJson(), finder: finder);
 
-    print("Updated user profile <${profile.key}> - '${profile.name}");
+    print("Updated user profile <${profile.key}> - '${profile.name}'");
+
+    return result;
   }
 
   Future deleteProfile(UserProfile profile) async {
     final finder = Finder(filter: Filter.equals("name", profile.name));
-    await _folder.delete(await _db, finder: finder);
 
+    await store.record(profile.key).delete(await _db);
     print("Deleted user profile <${profile.key}> - '${profile.name}'");
   }
 
@@ -108,78 +126,50 @@ class UserProfileDBManager {
     /*
      * Return the currently selected profile.
      *
-     * If multiple profiles are selected,
+     * key should match the "selected" property
-     * mark all but the first as unselected
-     *
-     * If no profile is currently selected,
-     * then force the first profile to be selected.
      */
 
-    final selected_finder = Finder(filter: Filter.equals("selected", true));
+    final selected = await store.record("selected").get(await _db);
 
-    final selected_profiles = await _folder.find(await _db, finder: selected_finder);
+    final profiles = await store.find(await _db);
 
-    if (selected_profiles.length == 1) {
+    List<UserProfile> profileList = new List<UserProfile>();
-      // A single profile is selected
-      return UserProfile.fromJson(selected_profiles[0].key, selected_profiles[0].value);
-    } else if (selected_profiles.length > 1) {
-      // Multiple selected profiles - de-select others
-      for (int idx = 1; idx < selected_profiles.length; idx++) {
-        UserProfile profile = UserProfile.fromJson(selected_profiles[idx].key, selected_profiles[idx].value);
 
-        profile.selected = false;
+    for (int idx = 0; idx < profiles.length; idx++) {
-        updateProfile(profile);
-      }
 
-      // And return the first profile
+      if (profiles[idx].key is int && profiles[idx].key == selected) {
-      return UserProfile.fromJson(selected_profiles[0].key, selected_profiles[0].value);
+        return UserProfile.fromJson(
-    } else {
+          profiles[idx].key,
-      // No profiles selected!
+          profiles[idx].value,
-
+          profiles[idx].key == selected,
-      final all_profiles = await getAllProfiles();
+        );
-
-      if (all_profiles.length == 0) {
-        // No profiles available
-        return null;
-      } else {
-        UserProfile prf = all_profiles[0];
-        prf.selected = true;
-        updateProfile(prf);
-
-        // Return the selected profile
-        return prf;
       }
     }
-  }
 
-  Future<UserProfile> getProfile(String name) async {
+    return null;
-
-    print("Looking for user profile '${name}'");
-
-    // Lookup profile by name (or return null if does not exist)
-    final finder = Finder(filter: Filter.equals("name", name));
-
-    final profiles = await _folder.find(await _db, finder: finder);
-
-    if (profiles.length == 0) {
-      print("No matching profiles found");
-      return null;
-    }
-
-    // Return the first matching profile object
-    return UserProfile.fromJson(profiles[0].key, profiles[0].value);
   }
 
   /*
    * Return all user profile objects
    */
   Future<List<UserProfile>> getAllProfiles() async {
-    final profiles = await _folder.find(await _db);
+
+    final selected = await store.record("selected").get(await _db);
+
+    final profiles = await store.find(await _db);
 
     List<UserProfile> profileList = new List<UserProfile>();
 
     for (int idx = 0; idx < profiles.length; idx++) {
-      profileList.add(UserProfile.fromJson(profiles[idx].key, profiles[idx].value));
+
+      if (profiles[idx].key is int) {
+        profileList.add(
+            UserProfile.fromJson(
+              profiles[idx].key,
+              profiles[idx].value,
+              profiles[idx].key == selected,
+            ));
+      }
     }
 
     return profileList;

lib/widget/home.dart

@@ -15,6 +15,7 @@ import 'package:InvenTree/widget/category_display.dart';
 import 'package:InvenTree/widget/company_list.dart';
 import 'package:InvenTree/widget/location_display.dart';
 import 'package:InvenTree/widget/search.dart';
+import 'package:InvenTree/widget/spinner.dart';
 import 'package:InvenTree/widget/drawer.dart';
 
 class InvenTreeHomePage extends StatefulWidget {
@@ -28,19 +29,10 @@ class _InvenTreeHomePageState extends State<InvenTreeHomePage> {
 
   _InvenTreeHomePageState() : super() {
 
+    // Initially load the profile and attempt server connection
     _loadProfile();
   }
 
-  String _serverStatus = "Connecting to server";
-
-  String _serverMessage = "";
-
-  bool _serverConnection = false;
-
-  FaIcon _serverIcon = new FaIcon(FontAwesomeIcons.spinner);
-
-  Color _serverStatusColor = Color.fromARGB(255, 50, 50, 250);
-
   // Selected user profile
   UserProfile _profile;
 
@@ -111,30 +103,20 @@ class _InvenTreeHomePageState extends State<InvenTreeHomePage> {
 
   void _loadProfile() async {
 
-    final profile = await UserProfileDBManager().getSelectedProfile();
+    _profile = await UserProfileDBManager().getSelectedProfile();
 
-    // If a different profile is selected, re-connect
+    // A valid profile was loaded!
-    if (_profile == null || (_profile.key != profile.key)) {
+    if (_profile != null) {
-
+      if (!InvenTreeAPI().isConnected() && !InvenTreeAPI().isConnecting()) {
-      if (_context != null) {
-        print("Connecting Profile: ${profile.name} - ${profile.server}");
 
+        print("Connect from C");
         InvenTreeAPI().connectToServer(_context).then((result) {
-          setState(() {
+          setState(() {});
-
-          });
-        });
-
-        setState(() {
         });
       }
     }
 
-    _profile = profile;
+    setState(() {});
-
-    setState(() {
-
-    });
   }
 
   ListTile _serverTile() {
@@ -162,10 +144,13 @@ class _InvenTreeHomePageState extends State<InvenTreeHomePage> {
         title: Text("Connecting to server..."),
         subtitle: Text("${InvenTreeAPI().baseUrl}"),
         leading: FaIcon(FontAwesomeIcons.server),
-        trailing: FaIcon(
+        trailing: Spinner(
-          FontAwesomeIcons.spinner,
+          icon: FontAwesomeIcons.spinner,
           color: Color.fromRGBO(50, 50, 250, 1),
-        )
+        ),
+        onTap: () {
+          _selectProfile();
+        }
       );
     } else if (InvenTreeAPI().isConnected()) {
       return ListTile(
@@ -196,42 +181,11 @@ class _InvenTreeHomePageState extends State<InvenTreeHomePage> {
     }
   }
 
-  void onConnectSuccess(String msg) async {
-
-    final profile = await UserProfileDBManager().getSelectedProfile();
-
-    String address = profile?.server ?? 'unknown server address';
-
-    _serverConnection = true;
-    _serverMessage = msg;
-    _serverStatus = "Connected to ${address}";
-    _serverStatusColor = Color.fromARGB(255, 50, 250, 50);
-    _serverIcon = new FaIcon(FontAwesomeIcons.checkCircle, color: _serverStatusColor);
-
-    setState(() {});
-  }
-
-  void onConnectFailure(String msg) async {
-
-    final profile = await UserProfileDBManager().getSelectedProfile();
-
-    _serverConnection = false;
-    _serverMessage = msg;
-    _serverStatus = "Could not connect to ${profile?.server}";
-    _serverStatusColor = Color.fromARGB(255, 250, 50, 50);
-    _serverIcon = new FaIcon(FontAwesomeIcons.timesCircle, color: _serverStatusColor);
-
-    setState(() {});
-  }
-
-
   @override
   Widget build(BuildContext context) {
 
     _context = context;
 
-    _loadProfile();
-
     // This method is rerun every time setState is called, for instance as done
     // by the _incrementCounter method above.
     //

lib/widget/spinner.dart

@@ -0,0 +1,54 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/cupertino.dart';
+
+import 'package:font_awesome_flutter/font_awesome_flutter.dart';
+
+class Spinner extends StatefulWidget {
+  final IconData icon;
+  final Duration duration;
+  final Color color;
+
+  const Spinner({
+    this.color = const Color.fromRGBO(150, 150, 150, 1),
+    Key key,
+    @required this.icon,
+    this.duration = const Duration(milliseconds: 1800),
+  }) : super(key: key);
+
+  @override
+  _SpinnerState createState() => _SpinnerState();
+}
+
+class _SpinnerState extends State<Spinner> with SingleTickerProviderStateMixin {
+  AnimationController _controller;
+  Widget _child;
+
+  @override
+  void initState() {
+    _controller = AnimationController(
+      vsync: this,
+      duration: Duration(milliseconds: 2000),
+    )
+      ..repeat();
+    _child = FaIcon(
+      widget.icon,
+      color: widget.color
+    );
+
+    super.initState();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return RotationTransition(
+      turns: _controller,
+      child: _child,
+    );
+  }
+}