AR Onboarding & Notifications: Localized Flow, Firebase Push, Deep Linking, Settings Integration

ONBOARDING_NOTIFICATIONS_IMPLEMENTATION.md

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+# Onboarding and Notifications Implementation Summary
+
+## Overview
+This implementation adds comprehensive onboarding flow and push notification system to the Flutter AR application with full localization support (EN/RU) and responsive design.
+
+## Features Implemented
+
+### 1. AR-Specific Onboarding Flow
+- **5-Step Onboarding Process**:
+  1. Welcome to AR Experience
+  2. Camera Permissions
+  3. Notification Permissions
+  4. Safety Tips
+  5. Get Started
+
+- **Localization**: Full support for English and Russian languages
+- **Responsive Design**: Adaptive layouts for portrait and landscape orientations
+- **Permission Handling**: Camera and notification permission requests with rationale dialogs
+- **Safety Guidelines**: Comprehensive safety tips for AR usage
+
+### 2. Push Notification System
+- **Firebase Cloud Messaging (FCM)** integration
+- **Foreground/Background Handling**: Different behaviors for app states
+- **Deep Link Support**: Navigation to specific content from notifications
+- **Notification Types**:
+  - New animations available
+  - AR feature updates
+  - General app notifications
+
+### 3. Settings Integration
+- **Notification Toggles**:
+  - Enable/disable all notifications
+  - New animations notifications
+  - AR updates notifications
+- **Onboarding Controls**:
+  - Replay onboarding
+  - Reset onboarding state
+
+### 4. Localization Support
+- **Complete Russian Translation**: All new features fully localized
+- **Dynamic Language Switching**: Changes apply immediately
+- **Cultural Adaptation**: Content adapted for Russian-speaking users
+
+### 5. Responsive Design
+- **Orientation Support**: Optimized layouts for portrait and landscape
+- **Screen Adaptation**: Uses flutter_screenutil for consistent sizing
+- **Touch-Friendly**: Appropriate touch targets for all screen sizes
+
+## Technical Architecture
+
+### Dependencies Added
+```yaml
+firebase_core: ^2.24.2
+firebase_messaging: ^14.7.9
+firebase_analytics: ^10.7.4
+uni_links: ^0.5.1
+```
+
+### New Services
+- **NotificationService**: Handles FCM setup, permissions, and message handling
+- **NotificationRepository**: Manages notification settings and preferences
+- **Deep Link Handler**: Processes incoming deep links
+
+### New Providers
+- **notificationSettingsProvider**: Manages notification preferences
+- **newAnimationsNotificationsProvider**: Controls animation notifications
+- **arUpdatesNotificationsProvider**: Controls AR update notifications
+
+### New Pages
+- **AROnboardingPage**: Comprehensive onboarding experience
+- **Settings enhancements**: Added notification and onboarding controls
+
+## File Structure
+
+### Core Services
+- `lib/data/services/notification_service.dart`
+- `lib/data/repositories/notification_repository.dart`
+
+### UI Components
+- `lib/presentation/pages/onboarding/ar_onboarding_page.dart`
+- `lib/presentation/pages/settings/settings_page.dart` (updated)
+
+### Providers
+- `lib/presentation/providers/notification_provider.dart`
+
+### Configuration
+- `lib/core/firebase_options.dart`
+- `android/app/src/main/AndroidManifest.xml` (updated)
+
+### Localization
+- `lib/l10n/app_en.arb` (updated)
+- `lib/l10n/app_ru.arb` (updated)
+
+### Tests
+- `test/unit/onboarding_localization_test.dart`
+- `test/unit/notification_flow_test.dart`
+
+### Documentation
+- `docs/manual_qa_scenarios.md`
+- `assets/animations/README.md`
+
+## Testing
+
+### Automated Tests
+- **Localization Tests**: Verify all text displays correctly in both languages
+- **Notification Flow Tests**: Test notification settings and state management
+- **Permission Handling**: Test camera and notification permission flows
+
+### Manual QA Scenarios
+Comprehensive test plan covering:
+- Onboarding flow validation
+- Permission handling
+- Notification reception and handling
+- Deep link functionality
+- Responsive design testing
+- Accessibility testing
+- Edge cases and error handling
+
+## Configuration Required
+
+### Firebase Setup
+1. Create Firebase project
+2. Add Android/iOS apps
+3. Download configuration files
+4. Update `firebase_options.dart` with actual values
+5. Configure FCM server key for push notifications
+
+### Deep Links
+1. Configure app linking in Android manifest
+2. Set up URL schemes for iOS
+3. Test deep link functionality
+
+### Notification Content
+1. Design notification templates
+2. Set up backend integration for sending notifications
+3. Configure notification payload structure
+
+## Usage
+
+### First Launch
+1. App shows splash screen (3 seconds)
+2. Automatically routes to AR onboarding if not completed
+3. User goes through 5-step onboarding process
+4. Permissions requested with clear explanations
+5. Safety tips displayed with visual indicators
+
+### Notification Settings
+1. Navigate to Settings > Notification Settings
+2. Toggle notification types as desired
+3. Settings persist across app launches
+
+### Onboarding Replay
+1. Navigate to Settings > Onboarding
+2. Tap "Replay Onboarding" to go through flow again
+3. Tap "Reset Onboarding" to show on next app launch
+
+## Performance Considerations
+
+### Optimizations
+- Lazy loading of onboarding content
+- Efficient state management with Riverpod
+- Minimal Firebase SDK usage
+- Optimized animation performance
+
+### Memory Management
+- Proper disposal of controllers and subscriptions
+- Efficient image/icon loading
+- Stream-based architecture for real-time updates
+
+## Future Enhancements
+
+### Potential Improvements
+- Add more onboarding animation content
+- Implement notification scheduling
+- Add analytics for onboarding completion
+- Support for more languages
+- Custom notification sounds
+- Rich media notifications
+
+### Scalability
+- Modular architecture allows easy addition of new notification types
+- Localization system supports additional languages
+- Onboarding flow can be extended with more steps
+
+## Security Considerations
+
+### Permissions
+- Minimal permission requests
+- Clear rationale for each permission
+- Graceful handling of permission denial
+- Settings integration for permission management
+
+### Data Privacy
+- FCM tokens stored securely
+- No sensitive data in notifications
+- User control over notification preferences
+
+This implementation provides a solid foundation for user onboarding and engagement through push notifications while maintaining high standards for localization, accessibility, and user experience.