---
phase: 03-images
plan: 03
subsystem: images
tags: [camera, getUserMedia, mediaDevices, photo-capture, mobile]

# Dependency graph
requires:
  - phase: 03-02
    provides: uploadImage form action for photo upload
provides:
  - CameraCapture modal component with getUserMedia
  - Photo capture via canvas.toBlob
  - Feature detection and graceful fallback
affects: [03-04-gallery-display]

# Tech tracking
tech-stack:
  added: []
  patterns: [getUserMedia for camera access, canvas.toBlob for photo capture, feature detection for graceful fallback]

key-files:
  created:
    - src/lib/components/CameraCapture.svelte
  modified: []

key-decisions:
  - "JPEG output at 0.9 quality for captured photos"
  - "Default to back camera (environment) for mobile paper note photos"
  - "Stop camera stream immediately after capture to save battery"
  - "Feature detection before attempting getUserMedia"
  - "10 second timeout to prevent indefinite loading state"

patterns-established:
  - "Camera modal: full-screen black background with centered preview"
  - "Capture flow: live preview -> capture -> review -> retake/confirm"
  - "Error handling: hasCameraSupport, isSecureContext, NotAllowedError, NotFoundError"

# Metrics
duration: 2min
completed: 2026-01-29
---

# Phase 03 Plan 03: Camera Capture Summary

**Full-screen camera modal with getUserMedia, photo capture via canvas.toBlob, and comprehensive feature detection**

## Performance

- **Duration:** 2 min
- **Started:** 2026-01-29T14:26:55Z
- **Completed:** 2026-01-29T14:28:23Z
- **Tasks:** 2
- **Files created:** 1

## Accomplishments
- CameraCapture modal component with live camera preview
- Photo capture using canvas.toBlob (JPEG at 0.9 quality)
- Preview captured photo with retake/confirm options
- Camera stream properly stopped on close and after capture
- Front/back camera switching for mobile devices
- Comprehensive feature detection and error handling
- Upload integration via fetch to ?/uploadImage action

## Task Commits

Each task was committed atomically:

1. **Task 1: CameraCapture component with getUserMedia** - `8248e0c` (feat)
   - Task 2 (feature detection) was implemented within Task 1 as the functionality was integrated

## Files Created/Modified
- `src/lib/components/CameraCapture.svelte` - Full camera capture modal component (313 lines)

## Key Functions Implemented
- `startCamera()` - Initialize camera stream with getUserMedia
- `stopCamera()` - Clean up camera stream and video element
- `capturePhoto()` - Capture frame to canvas and convert to blob
- `retake()` - Clear capture and restart camera
- `confirmAndUpload()` - Upload captured photo to server
- `switchCamera()` - Toggle between front and back camera
- `handleClose()` - Clean shutdown with proper cleanup

## Feature Detection
- `hasCameraSupport` - Check for navigator.mediaDevices.getUserMedia
- `isSecureContext` - Verify HTTPS (required for camera except localhost)
- `NotAllowedError` - Camera permission denied by user
- `NotFoundError` - No camera available on device
- 10 second timeout - Prevent indefinite loading state

## Decisions Made
- **JPEG at 0.9 quality:** Balance between file size and quality for uploaded photos
- **Default back camera:** Most users will photograph paper notes, back camera is more useful
- **Stop camera after capture:** Save battery while user reviews photo
- **Full-screen modal:** Typical camera UI pattern, black background

## Deviations from Plan

**Task 2 merged into Task 1:** All feature detection and error handling was implemented as part of Task 1 since it made more sense to build the complete component with proper error handling from the start rather than retrofitting it.

## Issues Encountered

None.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness
- CameraCapture component ready for integration into entry detail view (03-04)
- Works with uploadImage action from 03-02
- Proper cleanup prevents camera indicator from staying on

---
*Phase: 03-images*
*Completed: 2026-01-29*
