Login/Regestrierung mit DB

trainerbox/lib/main.dart

@@ -4,6 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'firebase_options.dart';
 import 'screens/home_screen.dart';
+import 'screens/login_screen.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
@@ -11,9 +12,28 @@ void main() async {
   runApp(const MyApp());
 }
 
-class MyApp extends StatelessWidget {
+class MyApp extends StatefulWidget {
   const MyApp({super.key});
 
+  @override
+  State<MyApp> createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+  bool _loggedIn = false;
+
+  void _handleLoginSuccess() {
+    setState(() {
+      _loggedIn = true;
+    });
+  }
+
+  void _handleLogoutSuccess() {
+    setState(() {
+      _loggedIn = false;
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
@@ -23,7 +43,9 @@ class MyApp extends StatelessWidget {
         colorScheme: ColorScheme.fromSeed(seedColor: Colors.pink),
         useMaterial3: true,
       ),
-      home: const HomeScreen(),
+      home: _loggedIn
+          ? HomeScreen(onLogoutSuccess: _handleLogoutSuccess)
+          : LoginScreen(onLoginSuccess: _handleLoginSuccess),
     );
   }
 }

trainerbox/lib/screens/home_screen.dart

@@ -8,7 +8,8 @@ import 'calendar_tab.dart';
 import 'profile_tab.dart';
 
 class HomeScreen extends StatefulWidget {
-  const HomeScreen({super.key});
+  final VoidCallback? onLogoutSuccess;
+  const HomeScreen({super.key, this.onLogoutSuccess});
 
   @override
   State<HomeScreen> createState() => _HomeScreenState();
@@ -17,12 +18,12 @@ class HomeScreen extends StatefulWidget {
 class _HomeScreenState extends State<HomeScreen> {
   int _selectedIndex = 0;
 
-  final List<Widget> _screens = const [
+  List<Widget> get _screens => [
-    HomeTab(),
+    const HomeTab(),
-    SearchTab(),
+    const SearchTab(),
-    FavoritesTab(),
+    const FavoritesTab(),
-    CalendarTab(),
+    const CalendarTab(),
-    ProfileTab(),
+    ProfileTab(onLogoutSuccess: widget.onLogoutSuccess),
   ];
 
   void _onItemTapped(int index) {

trainerbox/lib/screens/login_screen.dart

@@ -0,0 +1,127 @@
+import 'package:flutter/material.dart';
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:cloud_firestore/cloud_firestore.dart';
+
+class LoginScreen extends StatefulWidget {
+  final void Function() onLoginSuccess;
+  const LoginScreen({super.key, required this.onLoginSuccess});
+
+  @override
+  State<LoginScreen> createState() => _LoginScreenState();
+}
+
+class _LoginScreenState extends State<LoginScreen> {
+  final _formKey = GlobalKey<FormState>();
+  final _emailController = TextEditingController();
+  final _passwordController = TextEditingController();
+  String? _error;
+  bool _loading = false;
+  bool _isLogin = true;
+
+  Future<void> _submit() async {
+    setState(() { _loading = true; _error = null; });
+    try {
+      if (_isLogin) {
+        // Login
+        UserCredential cred = await FirebaseAuth.instance.signInWithEmailAndPassword(
+          email: _emailController.text.trim(),
+          password: _passwordController.text.trim(),
+        );
+        // Firestore-Check
+        final uid = cred.user!.uid;
+        final userDoc = await FirebaseFirestore.instance.collection('User').doc(uid).get();
+        if (userDoc.exists) {
+          widget.onLoginSuccess();
+        } else {
+          setState(() { _error = 'Kein Benutzerprofil in der Datenbank gefunden!'; });
+          await FirebaseAuth.instance.signOut();
+        }
+      } else {
+        // Registrierung
+        UserCredential cred = await FirebaseAuth.instance.createUserWithEmailAndPassword(
+          email: _emailController.text.trim(),
+          password: _passwordController.text.trim(),
+        );
+        // User-Datensatz in Firestore anlegen
+        final uid = cred.user!.uid;
+        await FirebaseFirestore.instance.collection('User').doc(uid).set({
+          'email': _emailController.text.trim(),
+          'createdAt': FieldValue.serverTimestamp(),
+        });
+        widget.onLoginSuccess();
+      }
+    } on FirebaseAuthException catch (e) {
+      setState(() { _error = e.message ?? 'Fehler'; });
+    } catch (e) {
+      setState(() { _error = 'Unbekannter Fehler'; });
+    } finally {
+      setState(() { _loading = false; });
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Center(
+        child: SingleChildScrollView(
+          padding: const EdgeInsets.all(24),
+          child: Form(
+            key: _formKey,
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                Text(_isLogin ? 'Login' : 'Registrieren', style: Theme.of(context).textTheme.headlineMedium),
+                const SizedBox(height: 32),
+                TextFormField(
+                  controller: _emailController,
+                  decoration: const InputDecoration(labelText: 'E-Mail'),
+                  keyboardType: TextInputType.emailAddress,
+                  validator: (v) => v != null && v.contains('@') ? null : 'Gib eine gültige E-Mail ein',
+                ),
+                const SizedBox(height: 16),
+                TextFormField(
+                  controller: _passwordController,
+                  decoration: const InputDecoration(labelText: 'Passwort'),
+                  obscureText: true,
+                  validator: (v) => v != null && v.length >= 6 ? null : 'Mind. 6 Zeichen',
+                ),
+                const SizedBox(height: 24),
+                if (_error != null) ...[
+                  Text(_error!, style: const TextStyle(color: Colors.red)),
+                  const SizedBox(height: 12),
+                ],
+                SizedBox(
+                  width: double.infinity,
+                  child: ElevatedButton(
+                    onPressed: _loading
+                        ? null
+                        : () {
+                            if (_formKey.currentState!.validate()) {
+                              _submit();
+                            }
+                          },
+                    child: _loading
+                        ? const CircularProgressIndicator()
+                        : Text(_isLogin ? 'Login' : 'Registrieren'),
+                  ),
+                ),
+                const SizedBox(height: 16),
+                TextButton(
+                  onPressed: _loading
+                      ? null
+                      : () {
+                          setState(() {
+                            _isLogin = !_isLogin;
+                            _error = null;
+                          });
+                        },
+                  child: Text(_isLogin ? 'Noch keinen Account? Jetzt registrieren!' : 'Schon registriert? Jetzt einloggen!'),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+} 

trainerbox/lib/screens/profile_tab.dart

@@ -1,14 +1,24 @@
 import 'package:flutter/material.dart';
+import 'package:firebase_auth/firebase_auth.dart';
 
 class ProfileTab extends StatelessWidget {
-  const ProfileTab({super.key});
+  final VoidCallback? onLogoutSuccess;
+  const ProfileTab({super.key, this.onLogoutSuccess});
+
+  Future<void> _logout(BuildContext context) async {
+    await FirebaseAuth.instance.signOut();
+    if (onLogoutSuccess != null) {
+      onLogoutSuccess!();
+    }
+  }
 
   @override
   Widget build(BuildContext context) {
-    // Beispiel-Benutzerdaten
+    final user = FirebaseAuth.instance.currentUser;
+    final email = user?.email ?? 'Keine E-Mail gefunden';
+    // Beispiel-Benutzerdaten (kannst du später dynamisch machen)
     final Map<String, dynamic> userData = {
       'name': 'Max Mustermann',
-      'email': 'max.mustermann@example.com',
       'level': 'Fortgeschritten',
       'joinedDate': '01.01.2024',
       'workoutsCompleted': 42,
@@ -66,7 +76,7 @@ class ProfileTab extends StatelessWidget {
                     title: 'Persönliche Informationen',
                     child: Column(
                       children: [
-                        _buildInfoRow('E-Mail', userData['email'], Icons.email),
+                        _buildInfoRow('E-Mail', email, Icons.email),
                         const Divider(),
                         _buildInfoRow('Level', userData['level'], Icons.star),
                         const Divider(),
@@ -88,9 +98,7 @@ class ProfileTab extends StatelessWidget {
                           title: const Text('Benachrichtigungen'),
                           trailing: Switch(
                             value: true,
-                            onChanged: (value) {
+                            onChanged: (value) {},
-                              // TODO: Implement notification settings
-                            },
                           ),
                         ),
                         const Divider(),
@@ -99,9 +107,7 @@ class ProfileTab extends StatelessWidget {
                           title: const Text('Dark Mode'),
                           trailing: Switch(
                             value: false,
-                            onChanged: (value) {
+                            onChanged: (value) {},
-                              // TODO: Implement dark mode
-                            },
                           ),
                         ),
                         const Divider(),
@@ -109,9 +115,7 @@ class ProfileTab extends StatelessWidget {
                           leading: const Icon(Icons.language),
                           title: const Text('Sprache'),
                           trailing: const Text('Deutsch'),
-                          onTap: () {
+                          onTap: () {},
-                            // TODO: Implement language selection
-                          },
                         ),
                       ],
                     ),
@@ -119,9 +123,7 @@ class ProfileTab extends StatelessWidget {
                   const SizedBox(height: 16),
                   Center(
                     child: TextButton.icon(
-                      onPressed: () {
+                      onPressed: () => _logout(context),
-                        // TODO: Implement logout
-                      },
                       icon: const Icon(Icons.logout),
                       label: const Text('Abmelden'),
                       style: TextButton.styleFrom(foregroundColor: Colors.red),

trainerbox/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,8 +5,12 @@
 import FlutterMacOS
 import Foundation
 
+import cloud_firestore
+import firebase_auth
 import firebase_core
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  FLTFirebaseFirestorePlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseFirestorePlugin"))
+  FLTFirebaseAuthPlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseAuthPlugin"))
   FLTFirebaseCorePlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseCorePlugin"))
 }

trainerbox/pubspec.lock

@@ -1,6 +1,14 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  _flutterfire_internals:
+    dependency: transitive
+    description:
+      name: _flutterfire_internals
+      sha256: "37a42d06068e2fe3deddb2da079a8c4d105f241225ba27b7122b37e9865fd8f7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.35"
   async:
     dependency: transitive
     description:
@@ -33,6 +41,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.2"
+  cloud_firestore:
+    dependency: "direct main"
+    description:
+      name: cloud_firestore
+      sha256: a0f161b92610e078b4962d7e6ebeb66dc9cce0ada3514aeee442f68165d78185
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.17.5"
+  cloud_firestore_platform_interface:
+    dependency: transitive
+    description:
+      name: cloud_firestore_platform_interface
+      sha256: "6a55b319f8d33c307396b9104512e8130a61904528ab7bd8b5402678fca54b81"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.2.5"
+  cloud_firestore_web:
+    dependency: transitive
+    description:
+      name: cloud_firestore_web
+      sha256: "89dfa1304d3da48b3039abbb2865e3d30896ef858e569a16804a99f4362283a9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.12.5"
   collection:
     dependency: transitive
     description:
@@ -57,14 +89,38 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.3.2"
+  firebase_auth:
+    dependency: "direct main"
+    description:
+      name: firebase_auth
+      sha256: cfc2d970829202eca09e2896f0a5aa7c87302817ecc0bdfa954f026046bf10ba
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.20.0"
+  firebase_auth_platform_interface:
+    dependency: transitive
+    description:
+      name: firebase_auth_platform_interface
+      sha256: a0270e1db3b2098a14cb2a2342b3cd2e7e458e0c391b1f64f6f78b14296ec093
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.3.0"
+  firebase_auth_web:
+    dependency: transitive
+    description:
+      name: firebase_auth_web
+      sha256: "64e067e763c6378b7e774e872f0f59f6812885e43020e25cde08f42e9459837b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.12.0"
   firebase_core:
     dependency: "direct main"
     description:
       name: firebase_core
-      sha256: "017d17d9915670e6117497e640b2859e0b868026ea36bf3a57feb28c3b97debe"
+      sha256: "26de145bb9688a90962faec6f838247377b0b0d32cc0abecd9a4e43525fc856c"
       url: "https://pub.dev"
     source: hosted
-    version: "3.13.0"
+    version: "2.32.0"
   firebase_core_platform_interface:
     dependency: transitive
     description:
@@ -77,10 +133,10 @@ packages:
     dependency: transitive
     description:
       name: firebase_core_web
-      sha256: "129a34d1e0fb62e2b488d988a1fc26cc15636357e50944ffee2862efe8929b23"
+      sha256: "362e52457ed2b7b180964769c1e04d1e0ea0259fdf7025fdfedd019d4ae2bd88"
       url: "https://pub.dev"
     source: hosted
-    version: "2.22.0"
+    version: "2.17.5"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -104,6 +160,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.2"
   intl:
     dependency: transitive
     description:
@@ -253,6 +317,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.4"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
   vector_math:
     dependency: transitive
     description:
@@ -273,10 +345,10 @@ packages:
     dependency: transitive
     description:
       name: web
-      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      sha256: "97da13628db363c635202ad97068d47c5b8aa555808e7a9411963c533b449b27"
       url: "https://pub.dev"
     source: hosted
-    version: "1.1.1"
+    version: "0.5.1"
 sdks:
   dart: ">=3.7.2 <4.0.0"
-  flutter: ">=3.22.0"
+  flutter: ">=3.18.0-18.0.pre.54"

trainerbox/pubspec.yaml

@@ -34,8 +34,10 @@ dependencies:
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.8
-  firebase_core: ^3.13.0
+  firebase_core: ^2.32.0
   table_calendar: ^3.0.9
+  cloud_firestore: ^4.17.3
+  firebase_auth: ^4.17.4
 
 dev_dependencies:
   flutter_test:

trainerbox/windows/flutter/generated_plugin_registrant.cc

@@ -6,9 +6,15 @@
 
 #include "generated_plugin_registrant.h"
 
+#include <cloud_firestore/cloud_firestore_plugin_c_api.h>
+#include <firebase_auth/firebase_auth_plugin_c_api.h>
 #include <firebase_core/firebase_core_plugin_c_api.h>
 
 void RegisterPlugins(flutter::PluginRegistry* registry) {
+  CloudFirestorePluginCApiRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("CloudFirestorePluginCApi"));
+  FirebaseAuthPluginCApiRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("FirebaseAuthPluginCApi"));
   FirebaseCorePluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FirebaseCorePluginCApi"));
 }

trainerbox/windows/flutter/generated_plugins.cmake

@@ -3,6 +3,8 @@
 #
 
 list(APPEND FLUTTER_PLUGIN_LIST
+  cloud_firestore
+  firebase_auth
   firebase_core
 )