fix: Resolve app not running on non web platforms

lib/src/app/app.dart

@@ -66,6 +66,9 @@ class AppModule extends Module {
             customTransition: defaultTransition,
             guards: [
               CapabilityGuard({UserCapability.student}, redirectTo: '/slots/'),
+              // apparently having a guard in a child route will override the parent's guard so we need it here too
+              // Important to have this guard last as the order of guards is reversed
+              AuthGuard(redirectTo: '/auth/'),
             ],
           ),
           ModuleRoute(
@@ -74,8 +77,9 @@ class AppModule extends Module {
             transition: TransitionType.custom,
             customTransition: defaultTransition,
             guards: [
-              CapabilityGuard({UserCapability.student}, redirectTo: '/slots/'),
               FeatureGuard([kCalendarPlanFeatureID], redirectTo: '/settings/'),
+              CapabilityGuard({UserCapability.student}, redirectTo: '/slots/'),
+              AuthGuard(redirectTo: '/auth/'),
             ],
           ),
           ModuleRoute(
@@ -97,14 +101,15 @@ class AppModule extends Module {
             customTransition: defaultTransition,
             guards: [
               CapabilityGuard({UserCapability.student}, redirectTo: '/slots/'),
+              AuthGuard(redirectTo: '/auth/'),
             ],
           ),
         ],
         customTransition: defaultTransition,
         transition: TransitionType.custom,
         guards: [
-          AuthGuard(redirectTo: '/auth/'),
           HasCoursesGuard(),
+          AuthGuard(redirectTo: '/auth/'),
         ],
       )
       ..module(

lib/src/app/presentation/screens/not_found_screen.dart

@@ -12,22 +12,24 @@ class NotFoundScreen extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      body: Padding(
-        padding: PaddingAll(),
-        child: Column(
-          children: [
-            ImageMessage(
-              message: context.t.notFound,
-              image: Assets.a404,
-            ).expanded(),
-            Spacing.mediumVertical(),
-            ElevatedButton(
-              onPressed: () {
-                Modular.to.navigate('/dashboard/');
-              },
-              child: Text(context.t.notFound_returnHome),
-            ),
-          ],
+      body: Center(
+        child: Padding(
+          padding: PaddingAll(),
+          child: Column(
+            children: [
+              ImageMessage(
+                message: context.t.notFound,
+                image: Assets.a404,
+              ).expanded(),
+              Spacing.mediumVertical(),
+              ElevatedButton(
+                onPressed: () {
+                  Modular.to.navigate('/dashboard/');
+                },
+                child: Text(context.t.notFound_returnHome),
+              ),
+            ],
+          ),
         ),
       ),
     );

lib/src/app/presentation/widgets/image_message.dart

@@ -16,16 +16,18 @@ class ImageMessage extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Column(
-      children: [
-        image.themed(context).expanded(),
-        Spacing.mediumVertical(),
-        Text(
-          message,
-          style: context.theme.textTheme.titleMedium,
-          textAlign: TextAlign.center,
-        ),
-      ],
+    return Center(
+      child: Column(
+        children: [
+          image.themed(context).expanded(),
+          Spacing.mediumVertical(),
+          Text(
+            message,
+            style: context.theme.textTheme.titleMedium,
+            textAlign: TextAlign.center,
+          ),
+        ],
+      ),
     );
   }
 }

lib/src/app/utils/sentry_utils.dart

@@ -21,7 +21,7 @@ extension TransactionX on ISentrySpan {
 }
 
 /// A mixin that adds transaction tracing to a class.
-mixin Tracable on ILoggable {
+mixin Tracable on Loggable {
   ISentrySpan? _transaction;
 
   /// The parent tracable to attach transactions to.

lib/src/auth/presentation/guards/auth_guard.dart

@@ -1,10 +1,11 @@
 import 'package:eduplanner/src/auth/auth.dart';
 import 'package:flutter_modular/flutter_modular.dart';
+import 'package:mcquenji_core/mcquenji_core.dart';
 
 /// Guard that checks if the user is authenticated.
 ///
 /// You must import [AuthModule] in the module using this guard.
-class AuthGuard extends RouteGuard {
+class AuthGuard extends RouteGuard with MiddlewareLogger {
   /// Guard that checks if the user is authenticated.
   ///
   /// You must import [AuthModule] in the module using this guard.
@@ -14,10 +15,15 @@ class AuthGuard extends RouteGuard {
   Future<bool> canActivate(String path, ModularRoute route) async {
     final auth = Modular.tryGet<AuthRepository>();
 
-    if (auth == null) return false;
+    if (auth == null) {
+      log('AuthRepository not found');
+      return false;
+    }
 
     await auth.ready;
 
-    return Modular.get<AuthRepository>().isAuthenticated;
+    log('Authenticated: ${auth.isAuthenticated}');
+
+    return auth.isAuthenticated;
   }
 }

lib/src/auth/presentation/guards/capability_guard.dart

@@ -1,8 +1,11 @@
+import 'dart:async';
+
 import 'package:eduplanner/src/auth/auth.dart';
 import 'package:flutter_modular/flutter_modular.dart';
+import 'package:mcquenji_core/mcquenji_core.dart';
 
 /// Guard that checks if the user has the required capabilities.
-class CapabilityGuard extends RouteGuard {
+class CapabilityGuard extends RouteGuard with MiddlewareLogger {
   /// The required capabilities.
   final Set<UserCapability> capabilities;
 
@@ -19,6 +22,8 @@ class CapabilityGuard extends RouteGuard {
 
     await user.ready;
 
+    log('User capabilities: ${user.state.data?.capabilities} ; Required: $capabilities');
+
     if (!user.state.hasData) {
       return false;
     }

lib/src/auth/presentation/repositories/auth_repository.dart

@@ -21,7 +21,7 @@ class AuthRepository extends Repository<AsyncValue<Set<Token>>> with Tracable {
   }
 
   @override
-  FutureOr<void> build(BuildTrigger trigger) async {
+  FutureOr<void> build(Trigger trigger) async {
     if (trigger is! InitialBuildTrigger) return;
 
     if (_state != null && isAuthenticated) {
@@ -70,7 +70,7 @@ class AuthRepository extends Repository<AsyncValue<Set<Token>>> with Tracable {
   }
 
   /// Sign in with [username] and [password].
-  Future<void> authenticate({
+  Future<bool> authenticate({
     required String username,
     required String password,
   }) async {
@@ -94,14 +94,17 @@ class AuthRepository extends Repository<AsyncValue<Set<Token>>> with Tracable {
         },
       );
 
-      if (!state.hasData) return;
+      if (!state.hasData) return false;
 
       log('Authentication successful');
 
       await _localStorage.write(state.requireData);
+
+      return true;
     } catch (e) {
       transaction.internalError(e);
-      rethrow;
+
+      return false;
     } finally {
       await transaction.commit();
     }
@@ -128,6 +131,11 @@ class AuthRepository extends Repository<AsyncValue<Set<Token>>> with Tracable {
   /// `true` if the user is authenticated.
   bool get isAuthenticated => state.hasData && state.requireData.isNotEmpty;
 
+  /// Throws a [WaitForDataException] if the user is not authenticated.
+  void requireAuth() {
+    if (!isAuthenticated) throw WaitForDataException(AuthRepository);
+  }
+
   @override
   void emit(AsyncValue<Set<Token>> state) {
     super.emit(state);

lib/src/auth/presentation/repositories/echidna_user_repository.dart

@@ -15,7 +15,7 @@ class EchidnaUserRepository extends UserIdRepository {
   }
 
   @override
-  FutureOr<void> build(BuildTrigger trigger) async {
+  FutureOr<void> build(Trigger trigger) async {
     if (trigger is! UserRepository) return;
 
     final user = waitForData(_user);

lib/src/auth/presentation/repositories/user_repository.dart

@@ -25,16 +25,14 @@ class UserRepository extends Repository<AsyncValue<User>> with Tracable {
   }
 
   @override
-  FutureOr<void> build(BuildTrigger trigger) async {
+  FutureOr<void> build(Trigger trigger) async {
     final transaction = startTransaction('loadUsers');
 
-    await _auth.ready;
-
     final tokens = waitForData(_auth);
 
     _isHandlingAuthChange = true;
 
-    if (tokens.isEmpty) {
+    if (!_auth.isAuthenticated) {
       log('User is unauthenticated');
 
       error(
@@ -67,7 +65,7 @@ class UserRepository extends Repository<AsyncValue<User>> with Tracable {
         distinctId: hash,
         properties: {
           'capabilities': user.capabilities.map((c) => c.name).toList(),
-          'vintage': user.vintage,
+          'vintage': user.vintage?.humanReadable,
           'theme': user.themeName,
           'optional_tasks_enabled': user.optionalTasksEnabled,
           'display_task_count': user.displayTaskCount,

lib/src/auth/presentation/screens/login_screen.dart

@@ -10,16 +10,8 @@ class LoginScreen extends StatelessWidget with AdaptiveWidget {
   /// Presents an authentication form to the user.
   const LoginScreen({super.key});
 
-  @override
-  Widget build(BuildContext context) {
-    final user = context.watch<UserRepository>();
-    final auth = context.watch<AuthRepository>();
-
-    if (auth.isAuthenticated && user.state.hasData) {
-      Modular.to.navigate('/dashboard/');
-    }
-
-    return super.build(context);
+  static void _onLogin() {
+    Modular.to.navigate('/dashboard/');
   }
 
   @override
@@ -42,7 +34,9 @@ class LoginScreen extends StatelessWidget with AdaptiveWidget {
               padding: EdgeInsets.only(right: 150),
               child: SizedBox(
                 width: 350,
-                child: LoginForm(),
+                child: LoginForm(
+                  onLogin: _onLogin,
+                ),
               ),
             ),
           ),
@@ -61,7 +55,9 @@ class LoginScreen extends StatelessWidget with AdaptiveWidget {
           spacing: Spacing.mediumSpacing,
           children: [
             const Spacer(),
-            const LoginForm(),
+            const LoginForm(
+              onLogin: _onLogin,
+            ),
             const Spacer(),
             Text(
               context.t.auth_version(kInstalledRelease.toString()),

lib/src/auth/presentation/widgets/login_form.dart

@@ -13,7 +13,10 @@ import 'package:url_launcher/url_launcher.dart';
 /// A form prompting the user to input their credentials.
 class LoginForm extends StatefulWidget {
   /// A form prompting the user to input their credentials.
-  const LoginForm({super.key});
+  const LoginForm({super.key, this.onLogin});
+
+  /// Callback to be called when the user logs in successfully.
+  final void Function()? onLogin;
 
   @override
   State<LoginForm> createState() => _LoginFormState();
@@ -79,17 +82,17 @@ class _LoginFormState extends State<LoginForm> with WidgetsBindingObserver {
 
     final auth = Modular.get<AuthRepository>();
 
-    await auth.authenticate(username: username, password: password);
+    final success = await auth.authenticate(username: username, password: password);
 
     setState(() {
       loggingIn = false;
     });
 
-    if (auth.state.hasError) {
-      return;
+    if (success) {
+      widget.onLogin?.call();
+    } else {
+      usernameFocusNode.requestFocus();
     }
-
-    usernameFocusNode.requestFocus();
   }
 
   void togglePasswordVisibility() {