Okay, let's set up the foundational structure for your Flutter application, "Growth", within the Project IDX environment. This structure will include the necessary folders, basic files, dependencies, and placeholders for the core features you've outlined. name: growth description: AI-driven educational resource sharing platform. publish_to: 'none' # Remove this line if you intend to publish the package version: 1.0.0+1 environment: sdk: '>=3.0.0 <4.0.0' dependencies: flutter: sdk: flutter # Firebase firebase_core: ^2.24.2 # Check for latest versions firebase_auth: ^4.16.0 cloud_firestore: ^4.14.0 firebase_storage: ^11.6.0 firebase_functions: ^4.6.0 # For calling backend functions # State Management (Provider example) provider: ^6.0.5 # UI & Utilities cupertino_icons: ^1.0.6 image_picker: ^1.0.4 # For picking handwritten note images intl: ^0.18.1 # For date formatting uuid: ^4.2.1 # For generating unique IDs # Video Player youtube_player_flutter: ^8.1.2 # Check for latest versions # Networking (if calling APIs directly from Flutter, though Functions are recommended) http: ^1.1.0 # Google AI (Gemini) - Use appropriate package when available or via http/functions # google_generative_ai: # Placeholder - Official package might exist or use http # Google Cloud Vision (Likely called via Firebase Functions) # googleapis: # If calling directly (complex auth) dev_dependencies: flutter_test: sdk: flutter flutter_lints: ^2.0.0 flutter: uses-material-design: true # To add assets to your application, add an assets section, like this: # assets: # - images/a_dot_burr.jpeg # - images/a_dot_ham.jpeg # An image asset can refer to one or more resolution-specific "variants", see # https://flutter.dev/assets-and-images/#resolution-aware # For details regarding adding assets from package dependencies, see # https://flutter.dev/assets-and-images/#from-packages # To add custom fonts to your application, add a fonts section here, # in this "flutter" section. Each entry in this list should have a # "family" key with the font family name, and a "fonts" key with a # list giving the asset and other descriptors for the font. For # example: # fonts: # - family: Schyler # fonts: # - asset: fonts/Schyler-Regular.ttf # - asset: fonts/Schyler-Italic.ttf # style: italic # - family: Trajan Pro # fonts: # - asset: fonts/TrajanPro.ttf # - asset: fonts/TrajanPro_Bold.ttf # weight: 700 # # For details regarding fonts from package dependencies, # see https://flutter.dev/custom-fonts/#from-packages import 'package:flutter/material.dart'; import 'package:firebase_core/firebase_core.dart'; import 'package:provider/provider.dart'; import 'package:growth/app.dart'; import 'package:growth/core/services/auth_service.dart'; import 'package:growth/core/services/database_service.dart'; import 'package:growth/core/services/storage_service.dart'; import 'package:growth/core/services/ai_service.dart'; import 'package:growth/features/auth/presentation/notifiers/auth_notifier.dart'; import 'package:growth/features/notes/presentation/notifiers/note_notifier.dart'; // Import other notifiers as needed // Import firebase_options.dart generated by FlutterFire CLI // import 'firebase_options.dart'; void main() async { WidgetsFlutterBinding.ensureInitialized(); // --- Firebase Initialization --- // Make sure to run `flutterfire configure` to generate firebase_options.dart // await Firebase.initializeApp( // options: DefaultFirebaseOptions.currentPlatform, // ); // --- End Firebase Initialization --- // TODO: Initialize Firebase (replace placeholder above with actual initialization) // For IDX, Firebase setup might be integrated differently. // Refer to IDX documentation for Firebase project linking. print("Firebase Core initialization placeholder - Configure Firebase for your project!"); // --- Dependency Injection / Service Locator Setup --- // Using Provider for simplicity here. You could use GetIt, Riverpod, etc. final authService = AuthService(); // Initialize your services final databaseService = DatabaseService(); final storageService = StorageService(); final aiService = AiService(); runApp( MultiProvider( providers: [ // Services (can be provided directly or through repositories) Provider.value(value: authService), Provider.value(value: databaseService), Provider.value(value: storageService), Provider.value(value: aiService), // Notifiers (State Management) ChangeNotifierProvider( create: (context) => AuthNotifier(authService), ), ChangeNotifierProvider( create: (context) => NoteNotifier(databaseService, storageService, aiService), ), // Add other notifiers (ProfileNotifier, SearchNotifier, etc.) ], child: const GrowthApp(), ), ); } import 'package:flutter/material.dart'; import 'package:provider/provider.dart'; import 'package:growth/core/constants/colors.dart'; import 'package:growth/features/auth/presentation/notifiers/auth_notifier.dart'; import 'package:growth/features/auth/presentation/screens/login_screen.dart'; import 'package:growth/features/home/presentation/screens/home_screen.dart'; import 'package:growth/core/routing/app_router.dart'; // Import the router class GrowthApp extends StatelessWidget { const GrowthApp({super.key}); @override Widget build(BuildContext context) { return MaterialApp( title: 'Growth', theme: ThemeData( primarySwatch: AppColors.primarySwatch, colorScheme: ColorScheme.fromSwatch( primarySwatch: AppColors.primarySwatch, accentColor: AppColors.accentColor, brightness: Brightness.light, ), scaffoldBackgroundColor: AppColors.backgroundColor, appBarTheme: const AppBarTheme( backgroundColor: AppColors.primaryColor, foregroundColor: Colors.white, elevation: 1.0, ), elevatedButtonTheme: ElevatedButtonThemeData( style: ElevatedButton.styleFrom( backgroundColor: AppColors.primaryColor, foregroundColor: Colors.white, shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(8.0), ), ), ), inputDecorationTheme: InputDecorationTheme( border: OutlineInputBorder( borderRadius: BorderRadius.circular(8.0), borderSide: const BorderSide(color: AppColors.primaryColor), ), focusedBorder: OutlineInputBorder( borderRadius: BorderRadius.circular(8.0), borderSide: const BorderSide(color: AppColors.accentColor, width: 2.0), ), ), useMaterial3: true, // Enable Material 3 features ), debugShowCheckedModeBanner: false, // Use the AppRouter for navigation onGenerateRoute: AppRouter.generateRoute, // Determine the initial route based on authentication state home: Consumer( builder: (context, authNotifier, child) { // Check authentication status // This is a basic check. You might want a splash screen // while checking the initial auth state. switch (authNotifier.authStatus) { case AuthStatus.authenticated: return const HomeScreen(); // Navigate to home if logged in case AuthStatus.unauthenticated: case AuthStatus.initial: // Treat initial as unauthenticated for now default: return const LoginScreen(); // Navigate to login if not logged in } }, ), ); } } import 'package:flutter/material.dart'; class AppColors { static const MaterialColor primarySwatch = Colors.teal; // Example primary color static const Color primaryColor = Colors.teal; // Example primary color static const Color accentColor = Colors.amber; // Example accent color static const Color backgroundColor = Color(0xFFF5F5F5); // Light grey background static const Color textColor = Color(0xFF333333); // Dark grey text static const Color secondaryTextColor = Color(0xFF757575); // Medium grey text static const Color errorColor = Colors.redAccent; static const Color successColor = Colors.green; } class AppStrings { // General static const String appName = "Growth"; static const String errorTitle = "Error"; static const String successTitle = "Success"; static const String loading = "Loading..."; // Authentication static const String login = "Login"; static const String register = "Register"; static const String logout = "Logout"; static const String emailHint = "Email"; static const String passwordHint = "Password"; static const String confirmPasswordHint = "Confirm Password"; static const String forgotPassword = "Forgot Password?"; static const String dontHaveAccount = "Don't have an account? Register"; static const String alreadyHaveAccount = "Already have an account? Login"; static const String googleSignIn = "Sign in with Google"; // Home Screen static const String homeTitle = "Dashboard"; static const String searchHint = "Search notes..."; static const String recentNotes = "Recent Notes"; static const String myNotes = "My Notes"; static const String sharedNotes = "Shared Notes"; // Note Upload static const String uploadNoteTitle = "Upload Note"; static const String noteTitleHint = "Note Title"; static const String noteDescriptionHint = "Description (optional)"; static const String noteTagsHint = "Tags (comma-separated)"; static const String uploadDigitalNote = "Upload Digital File"; static const String uploadHandwrittenNote = "Upload Handwritten Note Image"; static const String embedVideo = "Embed Video URL (YouTube)"; static const String videoUrlHint = "YouTube Video URL"; static const String submit = "Submit"; // Note Details static const String noteDetailsTitle = "Note Details"; static const String uploadedBy = "Uploaded by:"; static const String uploadDate = "Uploaded on:"; static const String categories = "Categories:"; static const String tags = "Tags:"; static const String requestPhysicalCopy = "Request Physical Copy"; static const String downloadNote = "Download Note"; // Profile static const String profileTitle = "Profile"; static const String editProfile = "Edit Profile"; static const String myUploads = "My Uploads"; static const String noteRequests = "Note Requests"; // Search static const String searchResultsTitle = "Search Results"; static const String noResultsFound = "No notes found matching your search."; static const String filterBy = "Filter By"; static const String sortBy = "Sort By"; // Errors static const String networkError = "Network error. Please check your connection."; static const String unknownError = "An unknown error occurred."; static const String invalidEmailError = "Invalid email format."; static const String passwordMismatchError = "Passwords do not match."; static const String weakPasswordError = "Password is too weak."; static const String emailInUseError = "Email is already in use."; static const String userNotFoundError = "User not found."; static const String invalidCredentialsError = "Invalid email or password."; static const String fileUploadError = "Failed to upload file."; static const String noteFetchError = "Failed to fetch notes."; static const String ocrError = "Failed to process handwritten note."; static const String aiProcessingError = "AI processing failed."; } import 'package:flutter/material.dart'; import 'package:growth/features/auth/presentation/screens/login_screen.dart'; import 'package:growth/features/auth/presentation/screens/register_screen.dart'; import 'package:growth/features/home/presentation/screens/home_screen.dart'; import 'package:growth/features/notes/presentation/screens/note_detail_screen.dart'; import 'package:growth/features/notes/presentation/screens/note_upload_screen.dart'; import 'package:growth/features/profile/presentation/screens/profile_screen.dart'; import 'package:growth/features/search/presentation/screens/search_results_screen.dart'; import 'package:growth/models/note.dart'; // Import Note model class AppRoutes { static const String login = '/login'; static const String register = '/register'; static const String home = '/home'; static const String noteDetail = '/note-detail'; static const String noteUpload = '/note-upload'; static const String profile = '/profile'; static const String searchResults = '/search-results'; } class AppRouter { static Route generateRoute(RouteSettings settings) { switch (settings.name) { case AppRoutes.login: return MaterialPageRoute(builder: (_) => const LoginScreen()); case AppRoutes.register: return MaterialPageRoute(builder: (_) => const RegisterScreen()); case AppRoutes.home: return MaterialPageRoute(builder: (_) => const HomeScreen()); case AppRoutes.noteUpload: return MaterialPageRoute(builder: (_) => const NoteUploadScreen()); case AppRoutes.profile: // Example: Pass userId if needed // final userId = settings.arguments as String?; return MaterialPageRoute(builder: (_) => const ProfileScreen(/* userId: userId */)); case AppRoutes.noteDetail: // Expecting a Note object or noteId as argument final argument = settings.arguments; if (argument is Note) { return MaterialPageRoute(builder: (_) => NoteDetailScreen(note: argument)); } else if (argument is String) { // If only ID is passed, fetch the note inside NoteDetailScreen return MaterialPageRoute(builder: (_) => NoteDetailScreen(noteId: argument)); } return _errorRoute("Note or Note ID required for Note Detail"); case AppRoutes.searchResults: // Expecting a search query as argument final query = settings.arguments as String?; if (query != null) { return MaterialPageRoute(builder: (_) => SearchResultsScreen(query: query)); } return _errorRoute("Search query required for Search Results"); default: // Optional: Redirect to home or login for unknown routes // return MaterialPageRoute(builder: (_) => const LoginScreen()); return _errorRoute("Unknown route: ${settings.name}"); } } static Route _errorRoute(String message) { return MaterialPageRoute( builder: (_) => Scaffold( appBar: AppBar(title: const Text('Error')), body: Center(child: Text('Routing Error: $message')), ), ); } } import 'package:firebase_auth/firebase_auth.dart'; // Import Google Sign-In package if you implement it // import 'package:google_sign_in/google_sign_in.dart'; class AuthService { final FirebaseAuth _firebaseAuth = FirebaseAuth.instance; // final GoogleSignIn _googleSignIn = GoogleSignIn(); // If using Google Sign-In // Stream to listen to authentication state changes Stream get authStateChanges => _firebaseAuth.authStateChanges(); // Get current user User? get currentUser => _firebaseAuth.currentUser; // Sign in with Email and Password Future signInWithEmailPassword(String email, String password) async { try { return await _firebaseAuth.signInWithEmailAndPassword(email: email, password: password); } on FirebaseAuthException catch (e) { // Handle specific errors (e.g., user-not-found, wrong-password) print("Firebase Auth Error (Sign In): ${e.code} - ${e.message}"); throw Exception("Sign In Failed: ${e.message}"); // Rethrow or handle appropriately } catch (e) { print("Unknown Error (Sign In): $e"); throw Exception("An unknown error occurred during sign in."); } } // Register with Email and Password Future registerWithEmailPassword(String email, String password) async { try { return await _firebaseAuth.createUserWithEmailAndPassword(email: email, password: password); // You might want to store additional user info in Firestore here } on FirebaseAuthException catch (e) { // Handle specific errors (e.g., email-already-in-use, weak-password) print("Firebase Auth Error (Register): ${e.code} - ${e.message}"); throw Exception("Registration Failed: ${e.message}"); // Rethrow or handle appropriately } catch (e) { print("Unknown Error (Register): $e"); throw Exception("An unknown error occurred during registration."); } } // Sign out Future signOut() async { try { // await _googleSignIn.signOut(); // Sign out from Google if used await _firebaseAuth.signOut(); } catch (e) { print("Error signing out: $e"); // Handle error appropriately } } // TODO: Implement Google Sign-In // Future signInWithGoogle() async { ... } // TODO: Implement Password Reset // Future sendPasswordResetEmail(String email) async { ... } } import 'package:cloud_firestore/cloud_firestore.dart'; import 'package:growth/models/note.dart'; import 'package:growth/models/user_profile.dart'; // Assuming you have a UserProfile model class DatabaseService { final FirebaseFirestore _db = FirebaseFirestore.instance; // --- Notes Collection --- final CollectionReference _notesCollection = FirebaseFirestore.instance.collection('notes'); // Add/Update a Note Future setNote(Note note) async { try { await _notesCollection.doc(note.id).set(note.toJson()); } catch (e) { print("Error setting note: $e"); throw Exception("Failed to save note data."); } } // Get a specific note by ID Future getNoteById(String noteId) async { try { DocumentSnapshot doc = await _notesCollection.doc(noteId).get(); if (doc.exists) { return Note.fromJson(doc.data() as Map); } return null; } catch (e) { print("Error getting note by ID: $e"); throw Exception("Failed to fetch note."); } } // Stream of notes (e.g., for a user or based on criteria) Stream> getNotesStream({String? userId, String? category, int limit = 20}) { Query query = _notesCollection.orderBy('createdAt', descending: true).limit(limit); if (userId != null) { query = query.where('uploaderId', isEqualTo: userId); } if (category != null) { query = query.where('categories', arrayContains: category); } return query.snapshots().map((snapshot) { return snapshot.docs.map((doc) { return Note.fromJson(doc.data() as Map); }).toList(); }).handleError((error) { print("Error in notes stream: $error"); // Return an empty list or handle error state in UI return []; }); } // Delete a note Future deleteNote(String noteId) async { try { await _notesCollection.doc(noteId).delete(); } catch (e) { print("Error deleting note: $e"); throw Exception("Failed to delete note."); } } // --- Users Collection --- final CollectionReference _usersCollection = FirebaseFirestore.instance.collection('users'); // Add/Update User Profile Data Future setUserProfile(UserProfile userProfile) async { try { await _usersCollection.doc(userProfile.uid).set(userProfile.toJson()); } catch (e) { print("Error setting user profile: $e"); throw Exception("Failed to save user profile."); } } // Get User Profile Data Future getUserProfile(String uid) async { try { DocumentSnapshot doc = await _usersCollection.doc(uid).get(); if (doc.exists) { return UserProfile.fromJson(doc.data() as Map); } return null; } catch (e) { print("Error getting user profile: $e"); throw Exception("Failed to fetch user profile."); } } // --- Note Requests Collection (Example) --- // final CollectionReference _requestsCollection = FirebaseFirestore.instance.collection('noteRequests'); // TODO: Implement methods for creating, fetching, updating note requests // --- Search Functionality --- // Basic keyword search (can be improved with Algolia/Typesense or backend search) Future> searchNotesByKeyword(String keyword) async { if (keyword.isEmpty) return []; try { // Very basic search: checks if title contains the keyword (case-insensitive) // For more complex search (tags, description, semantic), use backend/cloud functions // or dedicated search services like Algolia or Typesense. QuerySnapshot snapshot = await _notesCollection .where('title_lowercase', isGreaterThanOrEqualTo: keyword.toLowerCase()) .where('title_lowercase', isLessThanOrEqualTo: '${keyword.toLowerCase()}\uf8ff') .limit(20) // Limit results .get(); // Alternative: Search in tags array // QuerySnapshot snapshot = await _notesCollection // .where('tags', arrayContains: keyword.toLowerCase()) // .limit(20) // .get(); return snapshot.docs.map((doc) => Note.fromJson(doc.data() as Map)).toList(); } catch (e) { print("Error searching notes: $e"); throw Exception("Failed to search notes."); } } // Note: For semantic search using Gemini, you'll likely call a Firebase Function // that interacts with the Gemini API. This service would then just call that function. // Future> searchNotesSemantically(String query) async { ... call Firebase Function ... } } import 'dart:io'; import 'package:firebase_storage/firebase_storage.dart'; import 'package:uuid/uuid.dart'; // For generating unique file names class StorageService { final FirebaseStorage _storage = FirebaseStorage.instance; final Uuid _uuid = const Uuid(); // Upload a file (e.g., PDF, DOCX, Image) Future uploadFile(File file, String path) async { try { // Generate a unique file name to avoid overwrites String fileExtension = file.path.split('.').last; String uniqueFileName = '${_uuid.v4()}.$fileExtension'; String fullPath = '$path/$uniqueFileName'; // e.g., 'notes/user123/abc-123.pdf' Reference ref = _storage.ref().child(fullPath); UploadTask uploadTask = ref.putFile(file); // Wait for the upload to complete TaskSnapshot snapshot = await uploadTask; // Get the download URL String downloadUrl = await snapshot.ref.getDownloadURL(); return downloadUrl; } on FirebaseException catch (e) { print("Firebase Storage Error (Upload): ${e.code} - ${e.message}"); throw Exception("File upload failed: ${e.message}"); } catch (e) { print("Unknown Error (Upload): $e"); throw Exception("An unknown error occurred during file upload."); } } // Delete a file using its download URL (more complex) or storage path Future deleteFileFromUrl(String downloadUrl) async { try { Reference ref = _storage.refFromURL(downloadUrl); await ref.delete(); } on FirebaseException catch (e) { // Handle errors, e.g., object-not-found print("Firebase Storage Error (Delete): ${e.code} - ${e.message}"); // Decide if you need to throw or just log // throw Exception("File deletion failed: ${e.message}"); } catch (e) { print("Unknown Error (Delete): $e"); // throw Exception("An unknown error occurred during file deletion."); } } Future deleteFileFromPath(String storagePath) async { try { Reference ref = _storage.ref().child(storagePath); await ref.delete(); } on FirebaseException catch (e) { print("Firebase Storage Error (Delete Path): ${e.code} - ${e.message}"); } catch (e) { print("Unknown Error (Delete Path): $e"); } } } // import 'package:google_generative_ai/google_generative_ai.dart'; // Import official package when ready import 'package:firebase_functions/firebase_functions.dart'; import 'package:http/http.dart' as http; // Example if calling directly import 'dart:convert'; // Placeholder for your Gemini API Key - **DO NOT HARDCODE KEYS IN PRODUCTION** // Use environment variables or Firebase Remote Config / Secrets Manager const String _geminiApiKeyPlaceholder = "YOUR_GEMINI_API_KEY"; class AiService { // --- Option 1: Using Firebase Functions (Recommended) --- final FirebaseFunctions _functions = FirebaseFunctions.instance; // Use region if needed Future> generateCategoriesFromTextViaFunction(String text) async { try { // Ensure you have deployed a function named 'analyzeNoteContent' final HttpsCallable callable = _functions.httpsCallable('analyzeNoteContent'); final result = await callable.call>({'textContent': text}); // Assuming the function returns {'categories': ['cat1', 'cat2']} if (result.data.containsKey('categories') && result.data['categories'] is List) { // Ensure the list contains strings return List.from(result.data['categories']); } else { print("Function response format unexpected: ${result.data}"); return []; // Return empty list or throw error } } on FirebaseFunctionsException catch (e) { print("Firebase Functions Error (analyzeNoteContent): ${e.code} - ${e.message}"); throw Exception("AI processing failed via function: ${e.message}"); } catch (e) { print("Unknown Error calling AI function: $e"); throw Exception("An unknown error occurred during AI processing."); } } Future> performSemanticSearchViaFunction(String query) async { try { // Ensure you have deployed a function named 'semanticSearchNotes' final HttpsCallable callable = _functions.httpsCallable('semanticSearchNotes'); final result = await callable.call>({'query': query}); // Assuming the function returns {'noteIds': ['id1', 'id2']} if (result.data.containsKey('noteIds') && result.data['noteIds'] is List) { return List.from(result.data['noteIds']); } else { print("Function response format unexpected: ${result.data}"); return []; } } on FirebaseFunctionsException catch (e) { print("Firebase Functions Error (semanticSearchNotes): ${e.code} - ${e.message}"); throw Exception("Semantic search failed via function: ${e.message}"); } catch (e) { print("Unknown Error calling search function: $e"); throw Exception("An unknown error occurred during semantic search."); } } // --- Option 2: Calling Gemini API Directly (Less Recommended from Client) --- // Requires careful API key management and handling network calls. // Use the official google_generative_ai package when available and stable. // Example using http (replace with official package usage): Future> generateCategoriesFromTextDirect(String text) async { // **WARNING:** Exposing API keys on the client is insecure. Use Functions. if (_geminiApiKeyPlaceholder == "YOUR_GEMINI_API_KEY") { print("WARNING: Gemini API Key not set."); return []; // Or throw an error } // Example endpoint - Replace with the correct Gemini API endpoint for text generation/analysis final url = Uri.parse('https://generativelanguage.googleapis.com/v1beta/models/gemini-pro:generateContent?key=$_geminiApiKeyPlaceholder'); try { final response = await http.post( url, headers: {'Content-Type': 'application/json'}, body: jsonEncode({ // Construct the request body according to Gemini API documentation // This is a simplified example, the actual prompt engineering is crucial 'contents': [{ 'parts':[{ 'text': "Extract the main categories or subjects from the following text. Return a JSON list of strings. Text: $text" }] }], // Add generationConfig if needed (temperature, max tokens, etc.) }), ); if (response.statusCode == 200) { final data = jsonDecode(response.body); // Parse the response carefully based on Gemini API documentation // This parsing logic is highly dependent on the API response structure // Example: Assuming response is like { "candidates": [ { "content": { "parts": [ { "text": "[\"Math\", \"Algebra\"]" } ] } } ] } final textResponse = data['candidates'][0]['content']['parts'][0]['text']; final categories = jsonDecode(textResponse); // Assuming the AI returns a JSON string list if (categories is List) { return List.from(categories); } return []; } else { print("Gemini API Error: ${response.statusCode} - ${response.body}"); throw Exception("Failed to generate categories from Gemini API."); } } catch (e) { print("Error calling Gemini API directly: $e"); throw Exception("An unknown error occurred calling Gemini API."); } } // TODO: Implement direct call for semantic search (if needed, Functions preferred) // Future> performSemanticSearchDirect(String query) async { ... } // TODO: Implement calls to Google Vision API (likely via Firebase Functions) // Future extractTextFromImageViaFunction(String imageUrl) async { ... } } import 'package:flutter/material.dart'; import 'package:intl/intl.dart'; class Helpers { // Format DateTime object static String formatDateTime(DateTime dateTime, {String format = 'MMM d, yyyy hh:mm a'}) { return DateFormat(format).format(dateTime); } // Show a simple snackbar static void showSnackBar(BuildContext context, String message, {bool isError = false}) { ScaffoldMessenger.of(context).showSnackBar( SnackBar( content: Text(message), backgroundColor: isError ? Theme.of(context).colorScheme.error : Colors.green, ), ); } // Show a loading indicator dialog static void showLoadingDialog(BuildContext context, {String message = 'Loading...'}) { showDialog( context: context, barrierDismissible: false, // User must not dismiss it manually builder: (BuildContext context) { return Dialog( child: Padding( padding: const EdgeInsets.all(20.0), child: Row( mainAxisSize: MainAxisSize.min, children: [ const CircularProgressIndicator(), const SizedBox(width: 20), Text(message), ], ), ), ); }, ); } // Hide loading dialog static void hideLoadingDialog(BuildContext context) { Navigator.of(context, rootNavigator: true).pop(); // Dismiss the dialog } // Basic email validation static bool isValidEmail(String email) { return RegExp(r"^[a-zA-Z0-9.a-zA-Z0-9.!#$%&'*+-/=?^_`{|}~]+@[a-zA-Z0-9]+\.[a-zA-Z]+").hasMatch(email); } // Convert comma-separated string to list of strings (for tags) static List stringToTagList(String tagString) { if (tagString.isEmpty) return []; return tagString.split(',').map((tag) => tag.trim().toLowerCase()).where((tag) => tag.isNotEmpty).toList(); } // Convert list of strings to comma-separated string static String tagListToString(List tags) { return tags.join(', '); } } import 'package:flutter/material.dart'; class LoadingIndicator extends StatelessWidget { final String? message; const LoadingIndicator({super.key, this.message}); @override Widget build(BuildContext context) { return Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, crossAxisAlignment: CrossAxisAlignment.center, children: [ const CircularProgressIndicator(), if (message != null) ...[ const SizedBox(height: 16), Text(message!), ] ], ), ); } } import 'package:cloud_firestore/cloud_firestore.dart'; enum NoteType { digital, handwritten, video } class Note { final String id; // Document ID final String title; final String? description; final String uploaderId; // Firebase Auth User UID final String uploaderName; // Denormalized for easier display final DateTime createdAt; final NoteType noteType; final String? fileUrl; // URL for digital/handwritten file in Cloud Storage final String? videoUrl; // URL for embedded video (e.g., YouTube) final String? extractedText; // Text from OCR for handwritten notes final List categories; // Generated by AI final List tags; // User-defined or AI-suggested final String titleLowercase; // For basic case-insensitive search Note({ required this.id, required this.title, this.description, required this.uploaderId, required this.uploaderName, required this.createdAt, required this.noteType, this.fileUrl, this.videoUrl, this.extractedText, this.categories = const [], this.tags = const [], }) : titleLowercase = title.toLowerCase(); // Initialize lowercase title // Factory constructor to create a Note from Firestore JSON data factory Note.fromJson(Map json) { return Note( id: json['id'] as String, title: json['title'] as String, description: json['description'] as String?, uploaderId: json['uploaderId'] as String, uploaderName: json['uploaderName'] as String? ?? 'Unknown User', // Handle missing name createdAt: (json['createdAt'] as Timestamp).toDate(), noteType: NoteType.values.firstWhere( (e) => e.toString() == json['noteType'], orElse: () => NoteType.digital, // Default type if parsing fails ), fileUrl: json['fileUrl'] as String?, videoUrl: json['videoUrl'] as String?, extractedText: json['extractedText'] as String?, categories: List.from(json['categories'] ?? []), tags: List.from(json['tags'] ?? []), // titleLowercase is derived, not stored/retrieved directly unless needed for query ); } // Method to convert Note object to JSON for Firestore Map toJson() { return { 'id': id, 'title': title, 'description': description, 'uploaderId': uploaderId, 'uploaderName': uploaderName, 'createdAt': Timestamp.fromDate(createdAt), 'noteType': noteType.toString(), // Store enum as string 'fileUrl': fileUrl, 'videoUrl': videoUrl, 'extractedText': extractedText, 'categories': categories, 'tags': tags, 'title_lowercase': titleLowercase, // Store lowercase for querying }; } } class UserProfile { final String uid; // Matches Firebase Auth UID final String email; final String? displayName; final String? photoUrl; // Add other profile fields as needed (e.g., school, major, bio) final DateTime createdAt; UserProfile({ required this.uid, required this.email, this.displayName, this.photoUrl, required this.createdAt, }); factory UserProfile.fromJson(Map json) { return UserProfile( uid: json['uid'] as String, email: json['email'] as String, displayName: json['displayName'] as String?, photoUrl: json['photoUrl'] as String?, // Handle potential null or incorrect type for createdAt createdAt: json['createdAt'] != null ? (json['createdAt'] as Timestamp).toDate() // Assuming Timestamp from Firestore : DateTime.now(), // Provide a default or handle error ); } Map toJson() { return { 'uid': uid, 'email': email, 'displayName': displayName, 'photoUrl': photoUrl, 'createdAt': createdAt, // Firestore handles DateTime conversion }; } } import 'package:flutter/material.dart'; import 'package:provider/provider.dart'; import 'package:growth/core/constants/strings.dart'; import 'package:growth/core/routing/app_router.dart'; import 'package:growth/core/utils/helpers.dart'; import 'package:growth/core/widgets/loading_indicator.dart'; import 'package:growth/features/auth/presentation/notifiers/auth_notifier.dart'; class LoginScreen extends StatefulWidget { const LoginScreen({super.key}); @override State createState() => _LoginScreenState(); } class _LoginScreenState extends State { final _formKey = GlobalKey(); final _emailController = TextEditingController(); final _passwordController = TextEditingController(); bool _obscurePassword = true; @override void dispose() { _emailController.dispose(); _passwordController.dispose(); super.dispose(); } Future _login() async { if (_formKey.currentState!.validate()) { final authNotifier = Provider.of(context, listen: false); final success = await authNotifier.signInWithEmailPassword( _emailController.text.trim(), _passwordController.text.trim(), ); if (success && mounted) { // Navigation is handled by the AuthNotifier listener in app.dart/main.dart // or you can explicitly navigate here if needed. // Navigator.pushReplacementNamed(context, AppRoutes.home); } else if (!success && mounted) { Helpers.showSnackBar(context, authNotifier.errorMessage ?? AppStrings.unknownError, isError: true); } } } @override Widget build(BuildContext context) { final authNotifier = Provider.of(context); return Scaffold( appBar: AppBar( title: const Text(AppStrings.login), ), body: Center( child: SingleChildScrollView( padding: const EdgeInsets.all(24.0), child: Form( key: _formKey, child: Column( mainAxisAlignment: MainAxisAlignment.center, crossAxisAlignment: CrossAxisAlignment.stretch, children: [ // Replace with your App Logo Icon(Icons.school, size: 80, color: Theme.of(context).primaryColor), const SizedBox(height: 32), Text( 'Welcome to ${AppStrings.appName}', style: Theme.of(context).textTheme.headlineSmall, textAlign: TextAlign.center, ), const SizedBox(height: 32), TextFormField( controller: _emailController, decoration: const InputDecoration( labelText: AppStrings.emailHint, prefixIcon: Icon(Icons.email), ), keyboardType: TextInputType.emailAddress, validator: (value) { if (value == null || value.isEmpty) { return 'Please enter your email'; } if (!Helpers.isValidEmail(value)) { return AppStrings.invalidEmailError; } return null; }, ), const SizedBox(height: 16), TextFormField( controller: _passwordController, decoration: InputDecoration( labelText: AppStrings.passwordHint, prefixIcon: const Icon(Icons.lock), suffixIcon: IconButton( icon: Icon( _obscurePassword ? Icons.visibility_off : Icons.visibility, ), onPressed: () { setState(() { _obscurePassword = !_obscurePassword; }); }, ), ), obscureText: _obscurePassword, validator: (value) { if (value == null || value.isEmpty) { return 'Please enter your password'; } // Add more password validation if needed return null; }, ), const SizedBox(height: 24), if (authNotifier.authStatus == AuthStatus.loading) const LoadingIndicator() else ElevatedButton( onPressed: _login, style: ElevatedButton.styleFrom( padding: const EdgeInsets.symmetric(vertical: 16), ), child: const Text(AppStrings.login), ), const SizedBox(height: 16), // TODO: Add Google Sign In Button // ElevatedButton.icon( // icon: Icon(Icons.g_mobiledata), // Replace with Google icon // label: Text(AppStrings.googleSignIn), // onPressed: () { /* Call Google Sign In method */ }, // style: ElevatedButton.styleFrom(backgroundColor: Colors.white, foregroundColor: Colors.black), // ), // const SizedBox(height: 16), TextButton( onPressed: () { // TODO: Implement Forgot Password functionality }, child: const Text(AppStrings.forgotPassword), ), const SizedBox(height: 16), TextButton( onPressed: () { Navigator.pushReplacementNamed(context, AppRoutes.register); }, child: const Text(AppStrings.dontHaveAccount), ), ], ), ), ), ), ); } } import 'package:flutter/material.dart'; import 'package:provider/provider.dart'; import 'package:growth/core/constants/strings.dart'; import 'package:growth/core/routing/app_router.dart'; import 'package:growth/core/utils/helpers.dart'; import 'package:growth/core/widgets/loading_indicator.dart'; import 'package:growth/features/auth/presentation/notifiers/auth_notifier.dart'; class RegisterScreen extends StatefulWidget { const RegisterScreen({super.key}); @override State createState() => _RegisterScreenState(); } class _RegisterScreenState extends State { final _formKey = GlobalKey(); final _emailController = TextEditingController(); final _passwordController = TextEditingController(); final _confirmPasswordController = TextEditingController(); bool _obscurePassword = true; bool _obscureConfirmPassword = true; @override void dispose() { _emailController.dispose(); _passwordController.dispose(); _confirmPasswordController.dispose(); super.dispose(); } Future _register() async { if (_formKey.currentState!.validate()) { final authNotifier = Provider.of(context, listen: false); final success = await authNotifier.registerWithEmailPassword( _emailController.text.trim(), _passwordController.text.trim(), // Pass other details like displayName if collected here ); if (success && mounted) { // Navigation handled by listener or explicitly navigate // Navigator.pushReplacementNamed(context, AppRoutes.home); } else if (!success && mounted) { Helpers.showSnackBar(context, authNotifier.errorMessage ?? AppStrings.unknownError, isError: true); } } } @override Widget build(BuildContext context) { final authNotifier = Provider.of(context); return Scaffold( appBar: AppBar( title: const Text(AppStrings.register), ), body: Center( child: SingleChildScrollView( padding: const EdgeInsets.all(24.0), child: Form( key: _formKey, child: Column( mainAxisAlignment: MainAxisAlignment.center, crossAxisAlignment: CrossAxisAlignment.stretch, children: [ // Replace with your App Logo Icon(Icons.school_outlined, size: 80, color: Theme.of(context).primaryColor), const SizedBox(height: 32), Text( 'Create your ${AppStrings.appName} Account', style: Theme.of(context).textTheme.headlineSmall, textAlign: TextAlign.center, ), const SizedBox(height: 32), // TODO: Add fields for Display Name, etc. if needed TextFormField( controller: _emailController, decoration: const InputDecoration( labelText: AppStrings.emailHint, prefixIcon: Icon(Icons.email), ), keyboardType: TextInputType.emailAddress, validator: (value) { if (value == null || value.isEmpty) { return 'Please enter your email'; } if (!Helpers.isValidEmail(value)) { return AppStrings.invalidEmailError; } return null; }, ), const SizedBox(height: 16), TextFormField( controller: _passwordController, decoration: InputDecoration( labelText: AppStrings.passwordHint, prefixIcon: const Icon(Icons.lock_outline), suffixIcon: IconButton( icon: Icon( _obscurePassword ? Icons.visibility_off : Icons.visibility, ), onPressed: () { setState(() { _obscurePassword = !_obscurePassword; }); }, ), ), obscureText: _obscurePassword, validator: (value) { if (value == null || value.isEmpty) { return 'Please enter a password'; } if (value.length < 6) { // Example: Basic length check return 'Password must be at least 6 characters'; } return null; }, ), const SizedBox(height: 16), TextFormField( controller: _confirmPasswordController, decoration: InputDecoration( labelText: AppStrings.confirmPasswordHint, prefixIcon: const Icon(Icons.lock), suffixIcon: IconButton( icon: Icon( _obscureConfirmPassword ? Icons.visibility_off : Icons.visibility, ), onPressed: () { setState(() { _obscureConfirmPassword = !_obscureConfirmPassword; }); }, ), ), obscureText: _obscureConfirmPassword, validator: (value) { if (value == null || value.isEmpty) { return 'Please confirm your password'; } if (value != _passwordController.text) { return AppStrings.passwordMismatchError; } return null; }, ), const SizedBox(height: 24), if (authNotifier.authStatus == AuthStatus.loading) const LoadingIndicator() else ElevatedButton( onPressed: _register, style: ElevatedButton.styleFrom( padding: const EdgeInsets.symmetric(vertical: 16), ), child: const Text(AppStrings.register), ), const SizedBox(height: 16), TextButton( onPressed: () { Navigator.pushReplacementNamed(context, AppRoutes.login); }, child: const Text(AppStrings.alreadyHaveAccount), ), ], ), ), ), ), ); } } import 'package:flutter/material.dart'; import 'package:firebase_auth/firebase_auth.dart'; import 'package:growth/core/services/auth_service.dart'; import 'package:growth/core/services/database_service.dart'; // To save user profile import 'package:growth/models/user_profile.dart'; // User profile model enum AuthStatus { initial, loading, authenticated, unauthenticated, error } class AuthNotifier extends ChangeNotifier { final AuthService _authService; // final DatabaseService _databaseService; // Inject if saving profile on register User? _user; AuthStatus _authStatus = AuthStatus.initial; String? _errorMessage; User? get user => _user; AuthStatus get authStatus => _authStatus; String? get errorMessage => _errorMessage; AuthNotifier(this._authService /*, this._databaseService*/) { _listenToAuthChanges(); } void _listenToAuthChanges() { _authService.authStateChanges.listen((User? user) { _user = user; if (_user != null) { _authStatus = AuthStatus.authenticated; } else { _authStatus = AuthStatus.unauthenticated; } _errorMessage = null; // Clear error on state change notifyListeners(); }); } Future signInWithEmailPassword(String email, String password) async { _setLoading(); try { await _authService.signInWithEmailPassword(email, password); // State change handled by listener return true; } catch (e) { _setError(e.toString()); return false; } } Future registerWithEmailPassword(String email, String password, {String? displayName}) async { _setLoading(); try { UserCredential? userCredential = await _authService.registerWithEmailPassword(email, password); if (userCredential?.user != null) { // Optional: Save user profile data to Firestore upon registration // final newUserProfile = UserProfile( // uid: userCredential!.user!.uid, // email: email, // displayName: displayName ?? '', // Use provided or empty // createdAt: DateTime.now(), // ); // await _databaseService.setUserProfile(newUserProfile); // State change handled by listener return true; } _setError("Registration failed: User not created."); return false; } catch (e) { _setError(e.toString()); return false; } } Future signOut() async { _setLoading(); // Optional: show loading during sign out try { await _authService.signOut(); // State change handled by listener } catch (e) { _setError(e.toString()); // Set error if sign out fails } } // TODO: Implement Google Sign In method // Future signInWithGoogle() async { ... } void _setLoading() { _authStatus = AuthStatus.loading; _errorMessage = null; notifyListeners(); } void _setError(String message) { _authStatus = AuthStatus.error; _errorMessage = message; notifyListeners(); // Optionally revert to unauthenticated after showing error Future.delayed(const Duration(milliseconds: 100), () { if (_authStatus == AuthStatus.error) { // Check if state hasn't changed again _authStatus = AuthStatus.unauthenticated; notifyListeners(); } }); } } import 'package:flutter/material.dart'; import 'package:provider/provider.dart'; import 'package:growth/core/constants/strings.dart'; import 'package:growth/core/routing/app_router.dart'; import 'package:growth/features/auth/presentation/notifiers/auth_notifier.dart'; import 'package:growth/features/notes/presentation/notifiers/note_notifier.dart'; import 'package:growth/features/notes/presentation/widgets/note_list.dart'; // Create this widget import 'package:growth/core/widgets/loading_indicator.dart'; class HomeScreen extends StatefulWidget { const HomeScreen({super.key}); @override State createState() => _HomeScreenState(); } class _HomeScreenState extends State { @override void initState() { super.initState(); // Fetch initial notes when the screen loads // Use WidgetsBinding to ensure context is available WidgetsBinding.instance.addPostFrameCallback((_) { final noteNotifier = Provider.of(context, listen: false); final authNotifier = Provider.of(context, listen: false); // Fetch recent notes (or user's notes initially) noteNotifier.fetchNotes(userId: authNotifier.user?.uid); }); } @override Widget build(BuildContext context) { final authNotifier = Provider.of(context); final noteNotifier = Provider.of(context); return Scaffold( appBar: AppBar( title: const Text(AppStrings.homeTitle), actions: [ IconButton( icon: const Icon(Icons.search), onPressed: () { // TODO: Implement search functionality or navigate to search screen // Example: Show search delegate or navigate // showSearch(context: context, delegate: NoteSearchDelegate()); Navigator.pushNamed(context, AppRoutes.searchResults, arguments: ''); // Pass initial empty query? }, ), IconButton( icon: const Icon(Icons.person), onPressed: () { Navigator.pushNamed(context, AppRoutes.profile); }, ), IconButton( icon: const Icon(Icons.logout), tooltip: AppStrings.logout, onPressed: () async { await authNotifier.signOut(); // Navigation handled by listener in main/app.dart }, ), ], ), body: RefreshIndicator( onRefresh: () async { // Reload notes on pull-to-refresh await noteNotifier.fetchNotes(userId: authNotifier.user?.uid, forceRefresh: true); }, child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ Padding( padding: const EdgeInsets.all(16.0), child: Text( 'Welcome, ${authNotifier.user?.displayName ?? authNotifier.user?.email ?? 'User'}!', style: Theme.of(context).textTheme.titleLarge, ), ), // TODO: Add Filters/Tabs (e.g., Recent, My Notes, By Category) Padding( padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0), child: Text( AppStrings.recentNotes, // Change title based on filter/tab style: Theme.of(context).textTheme.titleMedium, ), ), Expanded( child: Consumer( builder: (context, notifier, child) { if (notifier.isLoading && notifier.notes.isEmpty) { return const LoadingIndicator(message: AppStrings.loading); } if (notifier.errorMessage != null) { return Center(child: Text('Error: ${notifier.errorMessage}')); } if (notifier.notes.isEmpty) { return const Center(child: Text('No notes found. Upload your first note!')); } // Use the NoteList widget to display notes return NoteList(notes: notifier.notes); }, ), ), ], ), ), floatingActionButton: FloatingActionButton( onPressed: () { Navigator.pushNamed(context, AppRoutes.noteUpload); }, tooltip: 'Upload Note', child: const Icon(Icons.add), ), ); } } import 'dart:io'; import 'package:flutter/material.dart'; import 'package:image_picker/image_picker.dart'; import 'package:provider/provider.dart'; import 'package:growth/core/constants/strings.dart'; import 'package:growth/core/utils/helpers.dart'; import 'package:growth/core/widgets/loading_indicator.dart'; import 'package:growth/features/auth/presentation/notifiers/auth_notifier.dart'; import 'package:growth/features/notes/presentation/notifiers/note_notifier.dart'; import 'package:growth/models/note.dart'; // Import NoteType class NoteUploadScreen extends StatefulWidget { const NoteUploadScreen({super.key}); @override State createState() => _NoteUploadScreenState(); } class _NoteUploadScreenState extends State { final _formKey = GlobalKey(); final _titleController = TextEditingController(); final _descriptionController = TextEditingController(); final _tagsController = TextEditingController(); final _videoUrlController = TextEditingController(); File? _selectedFile; // For digital file or handwritten image NoteType _selectedNoteType = NoteType.digital; // Default type final ImagePicker _picker = ImagePicker(); @override void dispose() { _titleController.dispose(); _descriptionController.dispose(); _tagsController.dispose(); _videoUrlController.dispose(); super.dispose(); } Future _pickFile() async { // Use file_picker package for more file types if needed // For simplicity, using image_picker for both image and potentially other files // if configured correctly. Let's stick to images for handwritten notes for now. final XFile? pickedFile; if (_selectedNoteType == NoteType.handwritten) { // Offer choice between camera and gallery pickedFile = await showDialog( context: context, builder: (ctx) => AlertDialog( title: const Text('Select Image Source'), content: Column( mainAxisSize: MainAxisSize.min, children: [ ListTile( leading: const Icon(Icons.camera_alt), title: const Text('Camera'), onTap: () async => Navigator.pop(ctx, await _picker.pickImage(source: ImageSource.camera)), ), ListTile( leading: const Icon(Icons.photo_library), title: const Text('Gallery'), onTap: () async => Navigator.pop(ctx, await _picker.pickImage(source: ImageSource.gallery)), ), ], ), ), ); } else { // Assuming digital means picking any file (use file_picker for this) // Using image picker as a placeholder for digital file picking print("Digital file picking: Using image picker as placeholder. Use file_picker package for better support."); pickedFile = await _picker.pickImage(source: ImageSource.gallery); // Placeholder } if (pickedFile != null) { setState(() { _selectedFile = File(pickedFile!.path); }); } } Future _submitNote() async { if (!_formKey.currentState!.validate()) { return; // Don't submit if form is invalid } // Basic validation for file/video based on type if (_selectedNoteType == NoteType.digital || _selectedNoteType == NoteType.handwritten) { if (_selectedFile == null) { Helpers.showSnackBar(context, 'Please select a file to upload.', isError: true); return; } } else if (_selectedNoteType == NoteType.video) { if (_videoUrlController.text.trim().isEmpty) { Helpers.showSnackBar(context, 'Please enter a video URL.', isError: true); return; } // TODO: Add more robust URL validation (e.g., check if it's a valid YouTube URL) } final noteNotifier = Provider.of(context, listen: false); final authNotifier = Provider.of(context, listen: false); final user = authNotifier.user; if (user == null) { Helpers.showSnackBar(context, 'You must be logged in to upload notes.', isError: true); return; } Helpers.showLoadingDialog(context, message: 'Uploading...'); // Show loading dialog try { final success = await noteNotifier.uploadNote( title: _titleController.text.trim(), description: _descriptionController.text.trim(), tags: Helpers.stringToTagList(_tagsController.text.trim()), noteType: _selectedNoteType, file: _selectedFile, videoUrl: _videoUrlController.text.trim(), uploaderId: user.uid, uploaderName: user.displayName ?? user.email ?? 'Anonymous', ); Helpers.hideLoadingDialog(context); // Hide loading dialog if (success && mounted) { Helpers.showSnackBar(context, 'Note uploaded successfully!'); Navigator.pop(context); // Go back after successful upload } else if (!success && mounted) { Helpers.showSnackBar(context, noteNotifier.errorMessage ?? AppStrings.unknownError, isError: true); } } catch (e) { Helpers.hideLoadingDialog(context); // Ensure dialog is hidden on error Helpers.showSnackBar(context, 'An error occurred: ${e.toString()}', isError: true); } } @override Widget build(BuildContext context) { final noteNotifier = Provider.of(context); return Scaffold( appBar: AppBar( title: const Text(AppStrings.uploadNoteTitle), ), body: SingleChildScrollView( padding: const EdgeInsets.all(16.0), child: Form( key: _formKey, child: Column( crossAxisAlignment: CrossAxisAlignment.stretch, children: [ // Note Type Selection DropdownButtonFormField( value: _selectedNoteType, decoration: const InputDecoration(labelText: 'Note Type'), items: NoteType.values.map((NoteType type) { String text; switch (type) { case NoteType.digital: text = 'Digital Document'; break; case NoteType.handwritten: text = 'Handwritten Notes (Image)'; break; case NoteType.video: text = 'Embedded Video'; break; } return DropdownMenuItem( value: type, child: Text(text), ); }).toList(), onChanged: (NoteType? newValue) { setState(() { _selectedNoteType = newValue!; _selectedFile = null; // Reset file when type changes _videoUrlController.clear(); // Clear video URL }); }, ), const SizedBox(height: 16), // Title TextFormField( controller: _titleController, decoration: const InputDecoration(labelText: AppStrings.noteTitleHint), validator: (value) { if (value == null || value.trim().isEmpty) { return 'Please enter a title for the note.'; } return null; }, ), const SizedBox(height: 16), // Description TextFormField( controller: _descriptionController, decoration: const InputDecoration(labelText: AppStrings.noteDescriptionHint), maxLines: 3, ), const SizedBox(height: 16), // Tags TextFormField( controller: _tagsController, decoration: const InputDecoration(labelText: AppStrings.noteTagsHint), ), const SizedBox(height: 24), // Conditional Input based on Note Type if (_selectedNoteType == NoteType.digital || _selectedNoteType == NoteType.handwritten) ...[ ElevatedButton.icon( icon: const Icon(Icons.attach_file), label: Text(_selectedNoteType == NoteType.digital ? AppStrings.uploadDigitalNote : AppStrings.uploadHandwrittenNote), onPressed: _pickFile, style: ElevatedButton.styleFrom( backgroundColor: Colors.grey[200], foregroundColor: Colors.black87, ), ), const SizedBox(height: 8), if (_selectedFile != null) Text('Selected: ${_selectedFile!.path.split('/').last}', textAlign: TextAlign.center), ], if (_selectedNoteType == NoteType.video) ...[ TextFormField( controller: _videoUrlController, decoration: const InputDecoration(labelText: AppStrings.videoUrlHint), keyboardType: TextInputType.url, validator: (value) { if (_selectedNoteType == NoteType.video && (value == null || value.trim().isEmpty)) { return 'Please enter a video URL.'; } // Basic URL validation (can be improved) if (value != null && value.isNotEmpty && !Uri.tryParse(value)?.hasAbsolutePath == true) { return 'Please enter a valid URL.'; } return null; }, ), ], const SizedBox(height: 32), // Submit Button if (noteNotifier.isUploading) const LoadingIndicator(message: 'Uploading...') else ElevatedButton( onPressed: _submitNote, style: ElevatedButton.styleFrom( padding: const EdgeInsets.symmetric(vertical: 16), ), child: const Text(AppStrings.submit), ), ], ), ), ), ); } } import 'package:flutter/material.dart'; import 'package:provider/provider.dart'; import 'package:youtube_player_flutter/youtube_player_flutter.dart'; import 'package:growth/core/constants/strings.dart'; import 'package:growth/core/utils/helpers.dart'; import 'package:growth/core/widgets/loading_indicator.dart'; import 'package:growth/models/note.dart'; import 'package:growth/features/notes/presentation/notifiers/note_notifier.dart'; // Import other services if needed (e.g., for downloading) class NoteDetailScreen extends StatefulWidget { final Note? note; // Pass the full note object if available final String? noteId; // Pass only the ID if note needs fetching const NoteDetailScreen({super.key, this.note, this.noteId}) : assert(note != null || noteId != null, 'Either note or noteId must be provided'); @override State createState() => _NoteDetailScreenState(); } class _NoteDetailScreenState extends State { Note? _displayNote; bool _isLoading = false; String? _error; YoutubePlayerController? _youtubeController; @override void initState() { super.initState(); if (widget.note != null) { _displayNote = widget.note; _initializeYoutubeController(); } else { _fetchNoteDetails(); } } @override void dispose() { _youtubeController?.dispose(); super.dispose(); } void _initializeYoutubeController() { if (_displayNote?.noteType == NoteType.video && _displayNote?.videoUrl != null) { final videoId = YoutubePlayer.convertUrlToId(_displayNote!.videoUrl!); if (videoId != null) { _youtubeController = YoutubePlayerController( initialVideoId: videoId, flags: const YoutubePlayerFlags( autoPlay: false, mute: false, ), ); } else { _error = "Invalid YouTube URL"; } } } Future _fetchNoteDetails() async { if (widget.noteId == null) return; setState(() { _isLoading = true; _error = null; }); try { final note = await Provider.of(context, listen: false) .getNoteById(widget.noteId!); if (mounted) { setState(() { _displayNote = note; _isLoading = false; if (_displayNote == null) { _error = "Note not found."; } else { _initializeYoutubeController(); } }); } } catch (e) { if (mounted) { setState(() { _isLoading = false; _error = "Failed to load note: ${e.toString()}"; }); } } } Widget _buildContent(Note note) { switch (note.noteType) { case NoteType.digital: return _buildDigitalNoteContent(note); case NoteType.handwritten: return _buildHandwrittenNoteContent(note); case NoteType.video: return _buildVideoContent(note); } } Widget _buildDigitalNoteContent(Note note) { // Option 1: Show a download button // Option 2: If PDF, try to display using a PDF viewer package (e.g., flutter_pdfview) // Option 3: If text-based (e.g., .txt), display content directly if available/fetched return Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ Text(note.description ?? 'No description available.', style: Theme.of(context).textTheme.bodyLarge), const SizedBox(height: 20), if (note.fileUrl != null) Center( child: ElevatedButton.icon( icon: const Icon(Icons.download), label: const Text(AppStrings.downloadNote), onPressed: () { // TODO: Implement file download functionality Helpers.showSnackBar(context, 'Download functionality not implemented yet.'); // Example: launchUrl(Uri.parse(note.fileUrl!)); }, ), ) else const Text('No downloadable file associated with this note.'), ], ); } Widget _buildHandwrittenNoteContent(Note note) { return Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ Text(note.description ?? 'No description available.', style: Theme.of(context).textTheme.bodyLarge), const SizedBox(height: 20), if (note.fileUrl != null) ...[ const Text('Image:', style: TextStyle(fontWeight: FontWeight.bold)), const SizedBox(height: 8), // Display the image InteractiveViewer( // Allows zooming/panning child: Image.network( note.fileUrl!, fit: BoxFit.contain, // Adjust fit as needed loadingBuilder: (context, child, loadingProgress) { if (loadingProgress == null) return child; return const Center(child: CircularProgressIndicator()); }, errorBuilder: (context, error, stackTrace) { return const Center(child: Text('Could not load image.')); }, ), ), const SizedBox(height: 20), // Optionally display extracted text if available if (note.extractedText != null && note.extractedText!.isNotEmpty) ...[ const Divider(), const Text('Extracted Text (OCR):', style: TextStyle(fontWeight: FontWeight.bold)), const SizedBox(height: 8), SelectableText(note.extractedText!), // Make text selectable const SizedBox(height: 20), ], Center( child: ElevatedButton.icon( icon: const Icon(Icons.download), label: const Text('Download Image'), onPressed: () { // TODO: Implement image download Helpers.showSnackBar(context, 'Download functionality not implemented yet.'); }, ), ), ] else ...[ const Text('No image associated with this note.'), ] ], ); } Widget _buildVideoContent(Note note) { return Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ Text(note.description ?? 'No description available.', style: Theme.of(context).textTheme.bodyLarge), const SizedBox(height: 20), if (_youtubeController != null) YoutubePlayer( controller: _youtubeController!, showVideoProgressIndicator: true, progressIndicatorColor: Theme.of(context).colorScheme.primary, // Add other customizations as needed ) else if (note.videoUrl != null) const Center(child: Text('Could not load video player. Invalid URL?')) else const Center(child: Text('No video URL provided.')), ], ); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text(_displayNote?.title ?? AppStrings.noteDetailsTitle), // TODO: Add Edit/Delete actions if the current user is the owner ), body: _isLoading ? const LoadingIndicator(message: 'Loading Note...') : _error != null ? Center(child: Text(_error!, style: const TextStyle(color: Colors.red))) : _displayNote == null ? const Center(child: Text('Note not found.')) : SingleChildScrollView( padding: const EdgeInsets.all(16.0), child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ // Title displayed in AppBar, maybe add again here if needed // Text(_displayNote!.title, style: Theme.of(context).textTheme.headlineMedium), // const SizedBox(height: 8), // Metadata Section Card( elevation: 2, margin: const EdgeInsets.symmetric(vertical: 8.0), child: Padding( padding: const EdgeInsets.all(12.0), child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ Text('${AppStrings.uploadedBy} ${_displayNote!.uploaderName}'), const SizedBox(height: 4), Text('${AppStrings.uploadDate} ${Helpers.formatDateTime(_displayNote!.createdAt)}'), if (_displayNote!.categories.isNotEmpty) ...[ const SizedBox(height: 8), Wrap( spacing: 6.0, runSpacing: 4.0, children: [ const Text('${AppStrings.categories}', style: TextStyle(fontWeight: FontWeight.bold)), ..._displayNote!.categories.map((cat) => Chip(label: Text(cat), visualDensity: VisualDensity.compact)).toList(), ], ), ], if (_displayNote!.tags.isNotEmpty) ...[ const SizedBox(height: 8), Wrap( spacing: 6.0, runSpacing: 4.0, children: [ const Text('${AppStrings.tags}', style: TextStyle(fontWeight: FontWeight.bold)), ..._displayNote!.tags.map((tag) => Chip(label: Text(tag), visualDensity: VisualDensity.compact, backgroundColor: Colors.grey[300])).toList(), ], ), ], ], ), ), ), const SizedBox(height: 16), const Divider(), const SizedBox(height: 16), // Main Content Area _buildContent(_displayNote!), const SizedBox(height: 24), const Divider(), const SizedBox(height: 16), // Actions Center( child: ElevatedButton( onPressed: () { // TODO: Implement Note Request functionality Helpers.showSnackBar(context, 'Note request feature not implemented yet.'); }, child: const Text(AppStrings.requestPhysicalCopy), ), ), const SizedBox(height: 20), ], ), ), ); } } import 'dart:io'; import 'package:flutter/material.dart'; import 'package:uuid/uuid.dart'; import 'package:growth/core/services/database_service.dart'; import 'package:growth/core/services/storage_service.dart'; import 'package:growth/core/services/ai_service.dart'; // Import AI service import 'package:growth/models/note.dart'; class NoteNotifier extends ChangeNotifier { final DatabaseService _databaseService; final StorageService _storageService; final AiService _aiService; // Inject AI Service final Uuid _uuid = const Uuid(); List _notes = []; bool _isLoading = false; bool _isUploading = false; String? _errorMessage; List get notes => _notes; bool get isLoading => _isLoading; bool get isUploading => _isUploading; String? get errorMessage => _errorMessage; NoteNotifier(this._databaseService, this._storageService, this._aiService); // Fetch notes (can be extended with filters, pagination) Future fetchNotes({String? userId, String? category, bool forceRefresh = false}) async { // Basic caching: If already loaded and not forcing refresh, return if (_notes.isNotEmpty && !forceRefresh && !_isLoading) { // Check if filter criteria match current list? More complex caching needed for that. // For now, simple check if list is not empty. // return; } _isLoading = true; _errorMessage = null; notifyListeners(); try { // Use the stream from DatabaseService and take the first result for a one-time fetch // Or, manage the stream subscription properly if you want real-time updates _notes = await _databaseService.getNotesStream(userId: userId, category: category).first; _errorMessage = null; } catch (e) { _errorMessage = "Failed to fetch notes: ${e.toString()}"; _notes = []; // Clear notes on error } finally { _isLoading = false; notifyListeners(); } } // Get a single note by ID Future getNoteById(String noteId) async { // No loading state management here as it's usually called from a detail screen try { return await _databaseService.getNoteById(noteId); } catch (e) { _errorMessage = "Failed to fetch note details: ${e.toString()}"; notifyListeners(); // Notify if error occurs, though UI might handle it directly return null; } } // Upload a new note Future uploadNote({ required String title, String? description, required List tags, required NoteType noteType, File? file, // Required for digital/handwritten String? videoUrl, // Required for video required String uploaderId, required String uploaderName, }) async { _isUploading = true; _errorMessage = null; notifyListeners(); String? fileDownloadUrl; String? ocrText; // Text extracted from handwritten notes List aiCategories = []; // Categories from AI try { // 1. Upload file to Storage if applicable if ((noteType == NoteType.digital || noteType == NoteType.handwritten) && file != null) { String storagePath = 'notes/$uploaderId'; // Example path structure fileDownloadUrl = await _storageService.uploadFile(file, storagePath); if (fileDownloadUrl == null) { throw Exception("File upload failed."); } // 2. If handwritten, call OCR (via AI Service -> Cloud Function) if (noteType == NoteType.handwritten) { // TODO: Implement OCR call via AiService (likely calls a Cloud Function) // ocrText = await _aiService.extractTextFromImageViaFunction(fileDownloadUrl); print("OCR Placeholder: Would call AI service for image URL: $fileDownloadUrl"); // For now, maybe use description as placeholder if OCR fails/not implemented ocrText = description ?? title; } } // 3. Prepare content for AI analysis String contentToAnalyze = ''; if (noteType == NoteType.video) { contentToAnalyze = "$title. $description. Video URL: $videoUrl"; // Combine info } else if (noteType == NoteType.handwritten) { contentToAnalyze = "$title. $description. ${ocrText ?? ''}"; // Use OCR text } else { // Digital note - Assume text content might be available later or use metadata contentToAnalyze = "$title. $description."; // If you extract text from PDFs/DOCX (complex, usually backend), include it here } // 4. Call AI Service for categorization (via Cloud Function is best) if (contentToAnalyze.trim().isNotEmpty) { try { // aiCategories = await _aiService.generateCategoriesFromTextDirect(contentToAnalyze); // Direct call (insecure keys) aiCategories = await _aiService.generateCategoriesFromTextViaFunction(contentToAnalyze); // Function call (preferred) } catch (aiError) { print("AI Categorization failed: $aiError. Proceeding without categories."); // Decide how to handle AI failure: proceed without categories or fail upload? aiCategories = []; // Proceed without categories } } // 5. Create Note object final newNote = Note( id: _uuid.v4(), // Generate unique ID title: title, description: description, uploaderId: uploaderId, uploaderName: uploaderName, createdAt: DateTime.now(), noteType: noteType, fileUrl: fileDownloadUrl, videoUrl: (noteType == NoteType.video) ? videoUrl : null, extractedText: ocrText, categories: aiCategories, // Add AI generated categories tags: tags.map((t) => t.toLowerCase()).toList(), // Ensure tags are lowercase ); // 6. Save Note metadata to Firestore await _databaseService.setNote(newNote); // 7. Optionally, add the new note to the local list if displaying immediately _notes.insert(0, newNote); // Add to beginning of list _errorMessage = null; return true; } catch (e) { _errorMessage = "Failed to upload note: ${e.toString()}"; // Clean up? Delete uploaded file if Firestore save failed? (More complex) // if (fileDownloadUrl != null) { // await _storageService.deleteFileFromUrl(fileDownloadUrl); // } return false; } finally { _isUploading = false; notifyListeners(); } } // TODO: Implement deleteNote method Future deleteNote(String noteId, String? fileUrl) async { _isLoading = true; // Use isLoading or a specific deleting flag notifyListeners(); try { // 1. Delete from Firestore await _databaseService.deleteNote(noteId); // 2. Delete file from Storage if URL exists if (fileUrl != null && fileUrl.isNotEmpty) { await _storageService.deleteFileFromUrl(fileUrl); } // 3. Remove from local list _notes.removeWhere((note) => note.id == noteId); _errorMessage = null; return true; } catch (e) { _errorMessage = "Failed to delete note: ${e.toString()}"; return false; } finally { _isLoading = false; notifyListeners(); } } // --- Search --- List _searchResults = []; bool _isSearching = false; List get searchResults => _searchResults; bool get isSearching => _isSearching; Future searchNotes(String query) async { if (query.isEmpty) { _searchResults = []; notifyListeners(); return; } _isSearching = true; _errorMessage = null; notifyListeners(); try { // Option 1: Basic Keyword Search (Client-side or DB query) // _searchResults = await _databaseService.searchNotesByKeyword(query); // Option 2: Semantic Search via AI Service (Cloud Function) final List matchingNoteIds = await _aiService.performSemanticSearchViaFunction(query); if (matchingNoteIds.isEmpty) { _searchResults = []; } else { // Fetch the full note details for the matching IDs // This could be inefficient for many results. Consider optimizing // by having the function return partial data or fetching in batches. List results = []; for (String id in matchingNoteIds) { final note = await getNoteById(id); // Reuse existing method if (note != null) { results.add(note); } } _searchResults = results; } _errorMessage = null; } catch (e) { _errorMessage = "Search failed: ${e.toString()}"; _searchResults = []; } finally { _isSearching = false; notifyListeners(); } } void clearSearch() { _searchResults = []; _errorMessage = null; _isSearching = false; notifyListeners(); } } import 'package:flutter/material.dart'; import 'package:growth/core/routing/app_router.dart'; import 'package:growth/core/utils/helpers.dart'; import 'package:growth/models/note.dart'; class NoteListItem extends StatelessWidget { final Note note; const NoteListItem({super.key, required this.note}); IconData _getIconForNoteType(NoteType type) { switch (type) { case NoteType.digital: return Icons.description; // Icon for document case NoteType.handwritten: return Icons.image; // Icon for image case NoteType.video: return Icons.video_library; // Icon for video } } @override Widget build(BuildContext context) { return Card( elevation: 2.0, margin: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 6.0), child: InkWell( // Make the whole card tappable onTap: () { Navigator.pushNamed( context, AppRoutes.noteDetail, arguments: note, // Pass the full note object ); }, child: Padding( padding: const EdgeInsets.all(12.0), child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ Row( children: [ Icon(_getIconForNoteType(note.noteType), size: 20, color: Theme.of(context).primaryColor), const SizedBox(width: 8), Expanded( child: Text( note.title, style: Theme.of(context).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold), overflow: TextOverflow.ellipsis, maxLines: 1, ), ), ], ), const SizedBox(height: 6), if (note.description != null && note.description!.isNotEmpty) ...[ Text( note.description!, style: Theme.of(context).textTheme.bodyMedium?.copyWith(color: Colors.grey[700]), maxLines: 2, overflow: TextOverflow.ellipsis, ), const SizedBox(height: 8), ], Row( mainAxisAlignment: MainAxisAlignment.spaceBetween, children: [ Text( 'By: ${note.uploaderName}', style: Theme.of(context).textTheme.bodySmall, ), Text( Helpers.formatDateTime(note.createdAt, format: 'MMM d, yyyy'), // Shorter date format style: Theme.of(context).textTheme.bodySmall, ), ], ), if (note.tags.isNotEmpty || note.categories.isNotEmpty) ...[ const SizedBox(height: 8), Wrap( spacing: 6.0, runSpacing: 0.0, // Keep spacing tight children: [ ...note.categories.map((cat) => Chip( label: Text(cat), padding: EdgeInsets.zero, labelPadding: const EdgeInsets.symmetric(horizontal: 6), visualDensity: VisualDensity.compact, backgroundColor: Theme.of(context).primaryColorLight.withOpacity(0.5), labelStyle: Theme.of(context).textTheme.bodySmall?.copyWith(fontSize: 10), )).toList(), ...note.tags.map((tag) => Chip( label: Text(tag), padding: EdgeInsets.zero, labelPadding: const EdgeInsets.symmetric(horizontal: 6), visualDensity: VisualDensity.compact, backgroundColor: Colors.grey[300], labelStyle: Theme.of(context).textTheme.bodySmall?.copyWith(fontSize: 10), )).toList(), ], ), ] ], ), ), ), ); } } import 'package:flutter/material.dart'; import 'package:growth/models/note.dart'; import 'package:growth/features/notes/presentation/widgets/note_list_item.dart'; class NoteList extends StatelessWidget { final List notes; const NoteList({super.key, required this.notes}); @override Widget build(BuildContext context) { if (notes.isEmpty) { return const Center( child: Text('No notes to display.'), ); } return ListView.builder( itemCount: notes.length, itemBuilder: (context, index) { final note = notes[index]; return NoteListItem(note: note); }, ); } } import 'package:flutter/material.dart'; import 'package:provider/provider.dart'; import 'package:growth/core/constants/strings.dart'; import 'package:growth/core/widgets/loading_indicator.dart'; import 'package:growth/features/auth/presentation/notifiers/auth_notifier.dart'; import 'package:growth/features/notes/presentation/notifiers/note_notifier.dart'; import 'package:growth/features/notes/presentation/widgets/note_list.dart'; // Reuse note list // Import UserProfile model and DatabaseService if fetching profile data class ProfileScreen extends StatefulWidget { // Optional: Pass userId if viewing someone else's profile // final String? userId; const ProfileScreen({super.key /*, this.userId */}); @override State createState() => _ProfileScreenState(); } class _ProfileScreenState extends State { @override void initState() { super.initState(); // Fetch user's notes when the screen loads WidgetsBinding.instance.addPostFrameCallback((_) { final authNotifier = Provider.of(context, listen: false); final noteNotifier = Provider.of(context, listen: false); if (authNotifier.user != null) { noteNotifier.fetchNotes(userId: authNotifier.user!.uid, forceRefresh: true); } // TODO: Fetch user profile details (name, etc.) from Firestore if needed }); } @override Widget build(BuildContext context) { final authNotifier = Provider.of(context); final noteNotifier = Provider.of(context); final user = authNotifier.user; if (user == null) { // Should not happen if routing is correct, but handle defensively return Scaffold( appBar: AppBar(title: const Text(AppStrings.profileTitle)), body: const Center(child: Text('Not logged in.')), ); } return Scaffold( appBar: AppBar( title: const Text(AppStrings.profileTitle), actions: [ IconButton( icon: const Icon(Icons.edit), tooltip: AppStrings.editProfile, onPressed: () { // TODO: Navigate to an Edit Profile Screen ScaffoldMessenger.of(context).showSnackBar( const SnackBar(content: Text('Edit Profile not implemented yet.')), ); }, ), ], ), body: Column( children: [ // --- Profile Header --- Padding( padding: const EdgeInsets.all(20.0), child: Column( children: [ CircleAvatar( radius: 50, // TODO: Use user.photoURL if available, otherwise show initial backgroundImage: user.photoURL != null ? NetworkImage(user.photoURL!) : null, child: user.photoURL == null ? Text( user.displayName?.substring(0, 1) ?? user.email?.substring(0, 1) ?? '?', style: const TextStyle(fontSize: 40), ) : null, ), const SizedBox(height: 16), Text( user.displayName ?? 'No Name Set', style: Theme.of(context).textTheme.headlineSmall, ), const SizedBox(height: 4), Text( user.email ?? 'No Email', style: Theme.of(context).textTheme.bodyMedium?.copyWith(color: Colors.grey[600]), ), // TODO: Add other profile info (School, Major, Bio) here if stored ], ), ), const Divider(), // --- Tabs or Sections (My Uploads, Requests) --- // Using Expanded with a NestedScrollView or TabBarView for scrollable content DefaultTabController( length: 2, // Number of tabs child: Expanded( child: Column( children: [ TabBar( tabs: const [ Tab(text: AppStrings.myUploads), Tab(text: AppStrings.noteRequests), // Placeholder ], labelColor: Theme.of(context).primaryColor, unselectedLabelColor: Colors.grey, indicatorColor: Theme.of(context).primaryColor, ), Expanded( child: TabBarView( children: [ // --- My Uploads Tab --- Consumer( builder: (context, notifier, child) { if (notifier.isLoading && notifier.notes.isEmpty) { return const LoadingIndicator(message: 'Loading your notes...'); } if (notifier.errorMessage != null) { return Center(child: Text('Error: ${notifier.errorMessage}')); } if (notifier.notes.isEmpty) { return const Center(child: Text('You haven\'t uploaded any notes yet.')); } // Filter notes again just to be sure (though fetchNotes should handle it) final myNotes = notifier.notes.where((n) => n.uploaderId == user.uid).toList(); if (myNotes.isEmpty) { return const Center(child: Text('You haven\'t uploaded any notes yet.')); } return RefreshIndicator( onRefresh: () async { await noteNotifier.fetchNotes(userId: user.uid, forceRefresh: true); }, child: NoteList(notes: myNotes) ); }, ), // --- Note Requests Tab (Placeholder) --- const Center( child: Text('Note Requests feature not implemented yet.'), ), ], ), ), ], ), ), ), ], ), ); } } import 'package:flutter/material.dart'; import 'package:provider/provider.dart'; import 'package:growth/core/constants/strings.dart'; import 'package:growth/core/widgets/loading_indicator.dart'; import 'package:growth/features/notes/presentation/notifiers/note_notifier.dart'; import 'package:growth/features/notes/presentation/widgets/note_list.dart'; // Reuse note list class SearchResultsScreen extends StatefulWidget { final String query; const SearchResultsScreen({super.key, required this.query}); @override State createState() => _SearchResultsScreenState(); } class _SearchResultsScreenState extends State { final TextEditingController _searchController = TextEditingController(); @override void initState() { super.initState(); _searchController.text = widget.query; // Trigger search immediately if initial query is provided if (widget.query.isNotEmpty) { WidgetsBinding.instance.addPostFrameCallback((_) { _performSearch(widget.query); }); } } @override void dispose() { _searchController.dispose(); // Clear search results when leaving the screen? Optional. // WidgetsBinding.instance.addPostFrameCallback((_) { // Provider.of(context, listen: false).clearSearch(); // }); super.dispose(); } void _performSearch(String query) { if (query.trim().isNotEmpty) { Provider.of(context, listen: false).searchNotes(query.trim()); } else { Provider.of(context, listen: false).clearSearch(); } } @override Widget build(BuildContext context) { final noteNotifier = Provider.of(context); return Scaffold( appBar: AppBar( title: TextField( controller: _searchController, autofocus: widget.query.isEmpty, // Autofocus if no initial query decoration: InputDecoration( hintText: AppStrings.searchHint, border: InputBorder.none, hintStyle: TextStyle(color: Colors.white.withOpacity(0.7)), ), style: const TextStyle(color: Colors.white, fontSize: 18), textInputAction: TextInputAction.search, onSubmitted: _performSearch, // Trigger search on submit ), actions: [ // Clear button if (_searchController.text.isNotEmpty) IconButton( icon: const Icon(Icons.clear), onPressed: () { _searchController.clear(); noteNotifier.clearSearch(); }, ), // TODO: Add Filter/Sort Button // IconButton( // icon: const Icon(Icons.filter_list), // onPressed: () { /* Show filter/sort options */ }, // ), ], ), body: Column( children: [ // TODO: Add Filter/Sort UI elements if needed Expanded( child: Consumer( builder: (context, notifier, child) { if (notifier.isSearching) { return const LoadingIndicator(message: 'Searching...'); } if (notifier.errorMessage != null && notifier.searchResults.isEmpty) { // Show error only if there are no results to display return Center(child: Text('Error: ${notifier.errorMessage}')); } if (notifier.searchResults.isEmpty && _searchController.text.isNotEmpty) { return const Center(child: Text(AppStrings.noResultsFound)); } if (notifier.searchResults.isEmpty && _searchController.text.isEmpty) { return const Center(child: Text('Enter a query to search for notes.')); } // Display results using the NoteList widget return NoteList(notes: notifier.searchResults); }, ), ), ], ), ); } } **Explanation and Next Steps:** 1. **Project Structure:** The code sets up a standard Flutter project structure with `core` (shared utilities, services, constants), `features` (authentication, notes, profile, search, home), and `models`. 2. **Dependencies (`pubspec.yaml`):** Includes essential packages for Firebase (Core, Auth, Firestore, Storage, Functions), Provider (state management), UI utilities (icons, image picker), YouTube player, and networking (http). You'll need to run `flutter pub get`. 3. **Firebase Setup:** * **CRITICAL:** You MUST configure Firebase for your Flutter project. Run `flutterfire configure` in your terminal using the FlutterFire CLI. This will generate the necessary `firebase_options.dart` file (uncomment the import in `main.dart`) and configure your native Android/iOS projects. * Link your Firebase project within Project IDX if you are using its integrated features. * Enable Authentication (Email/Password, Google Sign-In), Firestore, Cloud Storage, and Cloud Functions in your Firebase console. 4. **API Keys:** * **CRITICAL:** The `AiService` has a placeholder for your Gemini API Key (`_geminiApiKeyPlaceholder`). **NEVER hardcode API keys directly in your client-side code.** * **Recommendation:** Use Firebase Cloud Functions to interact with the Gemini and Vision APIs. Pass data to the function, let the function securely call the Google APIs using server-side authentication or keys stored securely (e.g., Secret Manager), and return the results to your Flutter app. The `AiService` includes placeholders for calling functions (`generateCategoriesFromTextViaFunction`, `performSemanticSearchViaFunction`). You will need to write and deploy these Cloud Functions separately. * If you *must* store keys for client-side use (highly discouraged for sensitive APIs like Gemini), use environment variables (`--dart-define` during build) or Firebase Remote Config. 5. **Core Services:** Abstracted services (`AuthService`, `DatabaseService`, `StorageService`, `AiService`) are provided. These handle interactions with backend systems (Firebase, AI APIs). 6. **State Management (`Provider`):** `ChangeNotifierProvider` is used to manage the state for Authentication (`AuthNotifier`) and Notes (`NoteNotifier`). Notifiers interact with the services and update the UI. 7. **Routing (`AppRouter`):** A simple named routing setup is included in `core/routing/app_router.dart`. 8. **Models:** Basic data models for `Note` and `UserProfile` are defined. 9. **Features:** * **Auth:** Basic Login/Register screens and the `AuthNotifier`. * **Home:** A basic home screen showing a welcome message and a list of notes. * **Notes:** Screens for uploading (`NoteUploadScreen`) and viewing details (`NoteDetailScreen`), along with widgets for the list (`NoteList`, `NoteListItem`) and the `NoteNotifier` to manage note data and uploads. * **Profile:** A basic profile screen showing user info and their uploaded notes. * **Search:** A search results screen (`SearchResultsScreen`) integrated with `NoteNotifier`'s search functionality. 10. **Placeholders (`// TODO:`):** The code contains numerous `// TODO:` comments indicating where you need to implement specific logic, such as: * Firebase initialization. * Google Sign-In implementation. * Password Reset. * File download functionality. * Note Request system. * Calling the actual AI/OCR functions (implementing the Cloud Functions is key). * Error handling refinement. * UI polishing (loading states, empty states, better layouts). * Implementing filters/sorting. * Implementing note editing/deletion UI actions. 11. **Cloud Functions:** You will need to create and deploy Firebase Cloud Functions (likely using Node.js or Python) for: * `analyzeNoteContent`: Takes text, calls Gemini API for categorization/tagging, returns results. * `semanticSearchNotes`: Takes a query, calls Gemini API (potentially using embeddings) to find relevant note IDs in Firestore, returns IDs. * `extractTextFromImage`: Takes an image URL (from Cloud Storage), calls the Vision API for OCR, returns the extracted text (you might store this back in the Note document in Firestore). This structure provides a solid foundation. You can now start implementing the `// TODO:` sections, building the Cloud Functions, and refining the UI/UX within your Project IDX environment. Remember to run `flutter pub get` after saving `pubspec.yaml`.