eigentliche Handwerksapp

main.dart

@@ -0,0 +1,57 @@
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:firebase_core/firebase_core.dart';
+import 'package:flutter/material.dart';
+
+import 'firebase_options.dart';
+import 'screens/auth/auth_screen.dart';
+import 'screens/firebase_setup_required_screen.dart';
+import 'screens/home/auftraege_home_screen.dart';
+import 'theme/app_theme.dart';
+
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  try {
+    await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
+  } catch (e, st) {
+    debugPrint('Firebase init failed: $e\n$st');
+    runApp(FirebaseSetupRequiredScreen(error: e));
+    return;
+  }
+  runApp(const HandwerksApp());
+}
+
+class HandwerksApp extends StatelessWidget {
+  const HandwerksApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Handwerksapp',
+      debugShowCheckedModeBanner: false,
+      theme: AppTheme.light(),
+      home: const _AuthGate(),
+    );
+  }
+}
+
+class _AuthGate extends StatelessWidget {
+  const _AuthGate();
+
+  @override
+  Widget build(BuildContext context) {
+    return StreamBuilder<User?>(
+      stream: FirebaseAuth.instance.authStateChanges(),
+      builder: (context, snapshot) {
+        if (snapshot.connectionState == ConnectionState.waiting) {
+          return const Scaffold(
+            body: Center(child: CircularProgressIndicator()),
+          );
+        }
+        if (snapshot.hasData) {
+          return const AuftraegeHomeScreen();
+        }
+        return const AuthScreen();
+      },
+    );
+  }
+}