---
phase: 03-images
plan: 01
subsystem: images
tags: [sharp, thumbnails, file-storage, api-endpoints, sqlite]

# Dependency graph
requires:
  - phase: 01-foundation
    provides: database schema patterns, repository pattern
  - phase: 02-core-crud
    provides: entries table for foreign key relationship
provides:
  - images table with entry relationship
  - imageRepository for CRUD operations
  - File storage utilities for originals and thumbnails
  - Sharp-based thumbnail generation with EXIF rotation
  - API endpoints for serving images
affects: [03-02-upload-api, 03-03-ui-components]

# Tech tracking
tech-stack:
  added: [sharp]
  patterns: [image storage in data/uploads, thumbnails always jpg, immutable cache headers]

key-files:
  created:
    - src/lib/server/images/storage.ts
    - src/lib/server/images/thumbnails.ts
    - src/routes/api/images/[id]/+server.ts
    - src/routes/api/images/[id]/thumbnail/+server.ts
  modified:
    - src/lib/server/db/schema.ts
    - src/lib/server/db/repository.ts

key-decisions:
  - "Thumbnails always stored as JPEG regardless of original format"
  - "EXIF rotation handled via sharp.rotate() before resize"
  - "Immutable cache headers (1 year) since image IDs never change"
  - "Cascade delete on entry deletion"

patterns-established:
  - "Image storage: data/uploads/originals/{id}.{ext}, data/uploads/thumbnails/{id}.jpg"
  - "Repository pattern extended for images with same singleton approach"

# Metrics
duration: 4min
completed: 2026-01-29
---

# Phase 03 Plan 01: Image Infrastructure Summary

**Sharp-based image storage with thumbnails, EXIF auto-rotation, and API endpoints for serving images**

## Performance

- **Duration:** 4 min
- **Started:** 2026-01-29T14:21:57Z
- **Completed:** 2026-01-29T14:26:00Z
- **Tasks:** 3
- **Files modified:** 6

## Accomplishments
- Images table with entryId foreign key and cascade delete
- ImageRepository with full CRUD (create, getById, getByEntryId, delete, deleteByEntryId)
- File storage utilities with directory management
- Thumbnail generation with EXIF auto-rotation for mobile photos
- GET endpoints for original images and thumbnails with proper caching

## Task Commits

Each task was committed atomically:

1. **Task 1: Database schema and repository for images** - `f5b5034` (feat)
2. **Task 2: File storage and thumbnail generation utilities** - `0987d16` (feat)
3. **Task 3: API endpoints for serving images** - `b3640e7` (feat)

## Files Created/Modified
- `src/lib/server/db/schema.ts` - Added images table with entryId FK
- `src/lib/server/db/repository.ts` - Added imageRepository singleton
- `src/lib/server/images/storage.ts` - File I/O utilities for originals/thumbnails
- `src/lib/server/images/thumbnails.ts` - Sharp thumbnail generation with EXIF rotation
- `src/routes/api/images/[id]/+server.ts` - GET endpoint for original images
- `src/routes/api/images/[id]/thumbnail/+server.ts` - GET endpoint for thumbnails

## Decisions Made
- **Thumbnails always JPEG:** Regardless of original format, thumbnails saved as .jpg for consistency and size optimization
- **EXIF rotation first:** Call sharp.rotate() before resize to handle mobile photo orientation
- **Immutable caching:** Cache-Control: public, max-age=31536000, immutable since image content never changes by ID
- **Cascade delete:** ON DELETE CASCADE on entryId so deleting entry removes images from DB (files handled separately)

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered

None.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness
- Image infrastructure ready for upload API (03-02)
- Repository and storage utilities available for upload processing
- API endpoints ready to serve uploaded images

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