@ -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 Process ing
### QR Code Scann ing
**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
Matt Raymer
3 weeks ago