diff --git a/docs/camera-implementation.md b/docs/camera-implementation.md index 495023a8..bd00e268 100644 --- a/docs/camera-implementation.md +++ b/docs/camera-implementation.md @@ -42,6 +42,17 @@ Component for photo capture and selection. - Image cropping capabilities - File selection fallback - Unified interface for different platforms +- Progress feedback during upload +- Comprehensive error handling + +**Camera Access Flow:** + +1. User initiates photo capture +2. Platform-specific camera access is requested +3. Image is captured or selected +4. Optional cropping is performed +5. Image is processed and uploaded +6. URL is returned to caller ### ImageMethodDialog.vue @@ -54,6 +65,13 @@ Component for selecting image input method. - Support for image cropping - URL-based image handling +**Camera Access Flow:** + +1. User selects camera option +2. PhotoDialog is opened for capture +3. Captured image is processed +4. Image is returned to parent component + ### SharedPhotoView.vue Component for handling shared photos. @@ -65,6 +83,32 @@ Component for handling shared photos. - Server upload integration - Temporary storage management +**Photo Processing Flow:** + +1. Photo is shared to application +2. Stored temporarily in IndexedDB +3. User chooses usage (gift/profile) +4. Image is processed accordingly +5. Server upload is performed + +### ContactQRScanShowView.vue + +Component for QR code scanning in contact sharing. + +**Key Features:** +- QR code scanning interface +- Camera controls (start/stop) +- Platform-specific implementations +- Error handling and status feedback + +**Camera Access Flow:** + +1. User initiates scanning +2. Camera permissions are checked +3. Camera stream is initialized +4. QR codes are detected in real-time +5. Results are processed + ## Services ### QRScanner Services @@ -99,9 +143,11 @@ Web-specific implementation of platform features. **Camera Capabilities:** -- Uses HTML5 file input with capture attribute +- Uses HTML5 file input with capture attribute for mobile +- Uses getUserMedia API for desktop webcam access - Falls back to file selection if camera unavailable - Processes captured images for consistent format +- Handles both mobile and desktop browser environments #### CapacitorPlatformService @@ -113,6 +159,7 @@ Native implementation using Capacitor. - Supports image editing - Configures high-quality image capture - Handles base64 image processing +- Provides native camera UI #### ElectronPlatformService @@ -122,6 +169,7 @@ Desktop implementation (currently unimplemented). - Camera functionality not yet implemented - Planned to use Electron's media APIs +- Will support desktop camera access ## Camera Usage Scenarios @@ -173,21 +221,147 @@ Desktop implementation (currently unimplemented). 4. User chooses usage (gift/profile) 5. Image is processed accordingly -### Image Upload and Processing +### QR Code Scanning **Implementation:** -- Secure server upload -- Authentication handling -- Image format standardization +- Platform-specific scanning components +- Real-time camera feed processing +- QR code detection and validation +- Contact information processing - Error handling and retry -- Progress feedback **Flow:** -1. Image is prepared for upload -2. Authentication token is obtained -3. Multipart form data is created -4. Upload progress is monitored -5. Server URL is returned +1. User initiates QR scanning +2. Camera permissions are checked +3. Camera stream is initialized +4. QR codes are detected +5. Contact information is processed + +### QR Code Workflow + +**Implementation Details:** + +The QR code scanning workflow is implemented across multiple components and services to provide a seamless experience for contact sharing and verification. The system supports both web-based and native implementations through platform-specific services. + +#### QR Code Generation + +**Contact QR Codes:** +- Generated using `qrcode.vue` component +- Contains encrypted contact information +- Includes user ID and verification data +- Supports offline sharing +- Implements error correction + +**QR Code Format:** +```json +{ + "type": "contact", + "userId": "encrypted_user_id", + "timestamp": "creation_time", + "version": "qr_code_version", + "data": "encrypted_contact_data" +} +``` + +#### QR Code Scanning Workflow + +**1. Initiation:** +- User selects "Scan QR Code" option +- Platform-specific scanner is initialized +- Camera permissions are verified +- Appropriate scanner component is loaded + +**2. Platform-Specific Implementation:** + +*Web Implementation:* +- Uses `qrcode-stream` for real-time scanning +- Supports both front and back cameras +- Implements continuous scanning +- Provides visual feedback for scanning status +- Handles browser compatibility issues + +*Native Implementation (Capacitor):* +- Uses `@capacitor-mlkit/barcode-scanning` +- Leverages native camera capabilities +- Provides optimized scanning performance +- Supports multiple barcode formats +- Implements native permission handling + +**3. Scanning Process:** +- Camera stream is initialized +- Real-time frame analysis begins +- QR codes are detected and decoded +- Validation of QR code format +- Processing of contact information + +**4. Contact Processing:** +- Decryption of contact data +- Validation of user information +- Verification of timestamp +- Check for duplicate contacts +- Processing of shared data + +**5. Error Handling:** +- Invalid QR code format +- Expired QR codes +- Duplicate contact attempts +- Network connectivity issues +- Permission denials +- Camera access problems + +**6. Success Flow:** +- Contact information is extracted +- User is prompted for confirmation +- Contact is added to user's list +- Success notification is displayed +- Camera resources are cleaned up + +#### Security Measures + +**QR Code Security:** +- Encryption of contact data +- Timestamp validation +- Version checking +- User verification +- Rate limiting for scans + +**Data Protection:** +- Secure transmission of contact data +- Validation of QR code authenticity +- Prevention of duplicate scans +- Protection against malicious codes +- Secure storage of contact information + +#### User Experience + +**Scanning Interface:** +- Clear visual feedback +- Camera preview +- Scanning status indicators +- Error messages +- Success confirmations + +**Accessibility:** +- Support for different screen sizes +- Clear instructions +- Error recovery options +- Alternative input methods +- Offline capability + +#### Performance Considerations + +**Optimization:** +- Efficient camera resource usage +- Quick QR code detection +- Minimal processing overhead +- Battery usage optimization +- Memory management + +**Platform-Specific Optimizations:** +- Web: Optimized for browser performance +- Native: Leverages device capabilities +- Desktop: Efficient resource usage +- Mobile: Battery and performance balance ## Platform-Specific Considerations @@ -196,18 +370,25 @@ Desktop implementation (currently unimplemented). - Requires `NSCameraUsageDescription` in Info.plist - Supports both front and back cameras - Implements proper permission handling +- Uses native camera UI through Capacitor +- Handles photo library access ### Android - Requires camera permissions in manifest - Supports both front and back cameras - Handles permission requests through Capacitor +- Uses native camera UI +- Manages photo library access ### Web - Requires HTTPS for camera access - Implements fallback mechanisms - Handles browser compatibility issues +- Uses getUserMedia API on desktop +- Uses file input with capture on mobile +- Supports multiple input methods ## Error Handling @@ -218,6 +399,8 @@ Desktop implementation (currently unimplemented). 3. Camera in use by another application 4. HTTPS required 5. Browser compatibility issues +6. Upload failures +7. Image processing errors ### Error Response @@ -225,6 +408,7 @@ Desktop implementation (currently unimplemented). - Troubleshooting tips - Clear instructions for resolution - Platform-specific guidance +- Graceful fallbacks ## Security Considerations @@ -233,12 +417,16 @@ Desktop implementation (currently unimplemented). - Explicit permission requests - Permission state tracking - Graceful handling of denied permissions +- Platform-specific permission handling +- Secure permission storage ### Data Handling - Secure image processing - Proper cleanup of camera resources - No persistent storage of camera data +- Secure server upload +- Temporary storage management ## Best Practices @@ -249,6 +437,7 @@ Desktop implementation (currently unimplemented). 3. Handle all error conditions 4. Provide clear user feedback 5. Implement proper cleanup +6. Use platform-specific optimizations ### Performance @@ -256,6 +445,8 @@ Desktop implementation (currently unimplemented). 2. Implement proper resource cleanup 3. Handle camera switching efficiently 4. Manage memory usage +5. Optimize image processing +6. Handle upload efficiently ### User Experience @@ -264,6 +455,7 @@ Desktop implementation (currently unimplemented). 3. Helpful error messages 4. Smooth camera switching 5. Responsive UI feedback +6. Platform-appropriate UI ## Future Improvements @@ -274,12 +466,15 @@ Desktop implementation (currently unimplemented). 3. Improve error handling 4. Enhance user feedback 5. Optimize performance +6. Add image compression options ### Known Issues 1. Electron camera implementation pending 2. Some browser compatibility limitations 3. Platform-specific quirks to address +4. Mobile browser camera access limitations +5. Image upload performance on slow connections ## Dependencies @@ -288,6 +483,7 @@ Desktop implementation (currently unimplemented). - `@capacitor-mlkit/barcode-scanning` - `qrcode-stream` - `vue-picture-cropper` +- `@capacitor/camera` - Platform-specific camera APIs ## Testing @@ -299,6 +495,8 @@ Desktop implementation (currently unimplemented). 3. Error conditions 4. Platform compatibility 5. Performance metrics +6. Upload scenarios +7. Image processing ### Test Environment @@ -306,3 +504,4 @@ Desktop implementation (currently unimplemented). - iOS and Android devices - Desktop platforms - Various network conditions +- Different camera configurations