Refactor the django powersync connector

lib/database/powersync/powersync.dart

@@ -7,6 +7,7 @@ import 'package:riverpod_annotation/riverpod_annotation.dart';
 import 'package:stream_transform/stream_transform.dart';
 import 'package:wger/powersync/connector.dart';
 import 'package:wger/powersync/schema.dart';
+import 'package:wger/providers/wger_base_riverpod.dart';
 
 part 'powersync.g.dart';
 
@@ -19,8 +20,9 @@ Future<PowerSyncDatabase> powerSyncInstance(Ref ref) async {
   );
   await db.initialize();
 
-  DjangoConnector? currentConnector;
-  currentConnector = DjangoConnector();
+  final baseProvider = ref.read(wgerBaseProvider);
+
+  final currentConnector = DjangoConnector(baseUrl: baseProvider.auth.serverUrl!);
   db.connect(connector: currentConnector);
 
   // if (ref.read(sessionProvider).value != null) {

lib/powersync/api_client.dart

@@ -26,13 +26,13 @@ import 'package:wger/helpers/shared_preferences.dart';
 import '../helpers/consts.dart';
 
 class ApiClient {
-  final _logger = Logger('powersync-ApiClient');
-  late final uri = Uri.parse('$baseUrl/api/v2/upload-powersync-data');
+  final _logger = Logger('Powersync ApiClient');
+  late final uri = Uri.parse('$serverUrl/api/v2/upload-powersync-data');
 
-  final String baseUrl;
+  final String serverUrl;
   String token = '';
 
-  ApiClient(this.baseUrl);
+  ApiClient(this.serverUrl);
 
   Map<String, String> getHeaders() {
     return {
@@ -54,7 +54,7 @@ class ApiClient {
 
     token = apiData['token'];
     final response = await http.get(
-      Uri.parse('$baseUrl/api/v2/powersync-token'),
+      Uri.parse('$serverUrl/api/v2/powersync-token'),
       headers: {
         HttpHeaders.contentTypeHeader: 'application/json',
         HttpHeaders.authorizationHeader: 'Token ${apiData["token"]}',

lib/powersync/connector.dart

@@ -28,22 +28,20 @@ final List<RegExp> fatalResponseCodes = [
   // Class 22 — Data Exception
   // Examples include data type mismatch.
   RegExp(r'^22...$'),
+
   // Class 23 — Integrity Constraint Violation.
   // Examples include NOT NULL, FOREIGN KEY and UNIQUE violations.
   RegExp(r'^23...$'),
+
   // INSUFFICIENT PRIVILEGE - typically a row-level security violation
   RegExp(r'^42501$'),
 ];
 
 class DjangoConnector extends PowerSyncBackendConnector {
-  late String baseUrl;
-  late ApiClient apiClient;
+  final String baseUrl;
+  final ApiClient apiClient;
 
-  DjangoConnector({String? baseUrl}) {
-    this.baseUrl = baseUrl ?? 'http://localhost:8000';
-
-    apiClient = ApiClient(this.baseUrl);
-  }
+  DjangoConnector({required this.baseUrl}) : apiClient = ApiClient(baseUrl);
 
   /// Get a token to authenticate against the PowerSync instance.
   @override

lib/screens/home_tabs_screen.dart

@@ -23,7 +23,6 @@ import 'package:logging/logging.dart';
 import 'package:provider/provider.dart';
 import 'package:rive/rive.dart';
 import 'package:wger/l10n/generated/app_localizations.dart';
-import 'package:wger/powersync/connector.dart';
 import 'package:wger/providers/auth.dart';
 import 'package:wger/providers/body_weight.dart';
 import 'package:wger/providers/exercise_state_notifier.dart';
@@ -59,9 +58,6 @@ class _HomeTabsScreenState extends riverpod.ConsumerState<HomeTabsScreen>
   void initState() {
     super.initState();
 
-    // do we need to await this? or if it's async, how do we handle failures?
-    _setupPowersync();
-
     // Loading data here, since the build method can be called more than once
     _initialData = _loadEntries();
   }
@@ -72,21 +68,6 @@ class _HomeTabsScreenState extends riverpod.ConsumerState<HomeTabsScreen>
     });
   }
 
-  Future<void> _setupPowersync() async {
-    final authProvider = context.read<AuthProvider>();
-    final baseUrl = authProvider.serverUrl!;
-
-    final connector = DjangoConnector(baseUrl: baseUrl);
-    // try {
-    // TODO: should we cache these credentials? that's what their demo does?
-    //       we could maybe get the initial token from the /api/v2/login call
-    final credentials = await connector.fetchCredentials();
-    widget._logger.fine('fetched credentials: $credentials');
-    // } catch (e) {
-    //   widget._logger.warning('failed to fetchCredentials: $e');
-    // }/
-  }
-
   final _screenList = [
     const DashboardScreen(),
     const RoutineListScreen(),