---
phase: 07-quick-add-library
plan: "01"
subsystem: api
tags: [go, postgres, rest-api, crud]

# Dependency graph
requires:
  - phase: 05-template-data-model-and-api
    provides: Item tier enum and query patterns used as reference
provides:
  - quick_add_items table DDL via 003_quick_add_library.sql
  - QuickAddItem Go struct with json tags
  - ListQuickAddItems, CreateQuickAddItem, UpdateQuickAddItem, DeleteQuickAddItem query functions
  - GET/POST /api/quick-add and PUT/DELETE /api/quick-add/{itemId} REST endpoints
affects: [08-quick-add-frontend]

# Tech tracking
tech-stack:
  added: []
  patterns: [user-scoped CRUD with sort_order auto-increment via subquery]

key-files:
  created:
    - backend/migrations/003_quick_add_library.sql
  modified:
    - backend/internal/models/models.go
    - backend/internal/db/queries.go
    - backend/internal/api/handlers.go
    - backend/internal/api/router.go

key-decisions:
  - "sort_order auto-incremented via (SELECT COALESCE(MAX(sort_order), 0) + 1 FROM quick_add_items WHERE user_id = $1) subquery at insert time"
  - "ListQuickAddItems initializes empty slice (not nil) so API always returns [] not null"
  - "UpdateQuickAddItem returns 404 via pgx.ErrNoRows check when no row matches id+user_id"

patterns-established:
  - "QuickAddItem CRUD follows Category/TemplateItem pattern: user_id in all WHERE clauses, fmt.Errorf wrapping, pgx row scanning"
  - "Routes registered after template block in authenticated group, following chi.Route pattern"

requirements-completed: [QADD-01, QADD-03]

# Metrics
duration: 1min
completed: 2026-03-12
---

# Phase 07 Plan 01: Quick-Add Library Backend Summary

**REST CRUD for quick_add_items table: migration, QuickAddItem model, four user-scoped query functions, four handlers at /api/quick-add**

## Performance

- **Duration:** 1 min
- **Started:** 2026-03-12T13:12:57Z
- **Completed:** 2026-03-12T13:13:57Z
- **Tasks:** 2
- **Files modified:** 4 (plus 1 created)

## Accomplishments

- Created 003_quick_add_library.sql with quick_add_items table and user index
- Added QuickAddItem struct to models.go and four CRUD query functions to queries.go
- Registered four HTTP handlers and routes under /api/quick-add inside authenticated group

## Task Commits

Each task was committed atomically:

1. **Task 1: Migration, model, and query functions** - `84d5b76` (feat)
2. **Task 2: HTTP handlers and route registration** - `b42f7b1` (feat)

## Files Created/Modified

- `backend/migrations/003_quick_add_library.sql` - DDL for quick_add_items table with user FK, sort_order, and index
- `backend/internal/models/models.go` - Added QuickAddItem struct
- `backend/internal/db/queries.go` - Added ListQuickAddItems, CreateQuickAddItem, UpdateQuickAddItem, DeleteQuickAddItem
- `backend/internal/api/handlers.go` - Added four handler methods for quick-add CRUD
- `backend/internal/api/router.go` - Registered /api/quick-add route group in authenticated section

## Decisions Made

- sort_order auto-incremented via subquery at INSERT time so client doesn't need to track current max
- ListQuickAddItems returns initialized empty slice so JSON response is always `[]` not `null`
- UpdateQuickAddItem maps pgx.ErrNoRows to 404 for user-friendly not-found behavior

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered

None. Go binary was at `/home/jean-luc-makiola/go/go1.26.1/bin/go` (non-standard PATH), found and used correctly.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness

- Backend API complete and compiles cleanly
- Database migration ready for 003 to be applied when deploying
- Ready for Phase 08 frontend quick-add library UI

---
*Phase: 07-quick-add-library*
*Completed: 2026-03-12*