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time_to_leave/CHECKLIST.md
T
fegger ce2a900545 Add correlation IDs and tests for monitoring
Generate short UUIDs in API route catch blocks to aid debugging.
Update existing API tests to assert the correlation ID. Add unit
tests for `useJourneys` and `useBikeRoute` hooks, and component
tests for `EventCard` and `CalendarView`.
2026-05-10 08:59:17 +02:00

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# TimeToLeave — Implementation Checklist
> **Source:** [REWRITE_PLAN.md](./REWRITE_PLAN.md)
> **Total:** 4 phases, 14 steps, ~5 hours estimated effort
---
## Phase 1 — Unblock Runtime (~45 min)
Fix bugs that crash the app or lose user data.
| Step | ✅ Implemented | ✔️ Reviewed | Notes |
|------|:--------------:|:-----------:|-------|
| **Step 1: Fix SSR Crash in `useBikeRoute`** (~10 min) | [x] | [x] | Relative URL fetch replaces `window.location.href` — SSR-safe. `isMounted` guard intact. |
| **Step 2: Wire Calendar Events into `EventsStore`** (~15 min) | [x] | [x] | `CalendarPanel.tsx` merges via `useEffect` when calendar events arrive. `mergeEvents()` converts `CalendarEvent` (string `eventTime`) → `Event` (Date `eventTime`). Bonus: localStorage persistence with rehydration. |
| **Step 3: Add Input Validation to `/api/hafas`** (~20 min) | [x] | [x] | Validates `svcReqL` array shape, method allowlist (TripSearch/LocMatch), caps `numF` at 10. Extra type guard on `svcReq.meth` (`typeof svcReq.meth !== 'string'`) exceeds spec. |
---
## Phase 2 — Deduplicate Code (~2 hours)
Eliminate duplicated logic so each integration has one source of truth.
| Step | ✅ Implemented | ✔️ Reviewed | Notes |
|------|:------:|:------:|-------|
| **Step 4: Consolidate HAFAS Journey Parsing** (~40 min) | [x] | [x] | parseHafasJourneys moved to hafas-client.ts, exported, imported by useJourneys.ts. Option A followed. |
| **Step 5: Wire API Routes to Use Library Clients** (~30 min) | [x] | [x] | Both routes use module-level singleton clients. Param validation, error handling, and try/catch intact. |
| **Step 6: Remove Dead Code** (~5 min) | [x] | [x] | live-status-utils.ts deleted, export removed from index.ts. No remaining references. |
| **Step 7: Create Missing Test Setup File** (~10 min) | [x] | [x] | src/test/setup.ts created with jest-dom vitest import. Referenced correctly in vitest.config.ts. |
---
## Phase 3 — Performance & UX (~1.5 hours)
| Step | ✅ Implemented | ✔️ Reviewed | Notes |
|------|:------:|:------:|-------|
| **Step 8: Add Debounce to Lookup Hooks** (~25 min) | [x] | [x] | 400ms setTimeout + AbortController in `useGeocode.ts` and `useDestinationStation.ts`. AbortError silently ignored. |
| **Step 9: Pre-Group Calendar Events by Date** (~20 min) | [x] | [x] | `useMemo` builds `Map<string, Event[]>` keyed by `YYYY-MM-DD`. Per-cell `filter()` replaced with O(1) map lookup. |
| **Step 10: Add Dark Mode Toggle** (~20 min) | [x] | [x] | `useTheme.ts` created (localStorage + prefers-color-scheme). Sun/moon toggle button added to `Header.tsx`. |
| **Step 11: Fix Bike Route Steps** (~5 min) | [x] | [x] | `steps: "true"` already present in `BikeRoutingClient.getBikeRoute()` query params. |
---
## Phase 4 — Monitoring & Testing (~1 hour)
| Step | ✅ Implemented | ✔️ Reviewed | Notes |
|------|:------:|:------:|-------|
| **Step 12: Add Correlation IDs to API Errors** (~15 min) | [x] | | `randomUUID().slice(0, 8)` in catch blocks of `bike-route`, `geocode`, `hafas`, `calendar`, `calendar/parse`. Logged server-side, returned in JSON. Existing API tests updated to assert `correlationId`. |
| **Step 13: Add Hook Tests** (~30 min) | [x] | | `useJourneys.test.ts` (4 tests: no-op when missing IDs, success, HTTP error, fetch throw). `useBikeRoute.test.ts` (4 tests: no-op when missing coords, success, HTTP error, fetch throw). |
| **Step 14: Add Component Tests** (~15 min) | [x] | | `EventCard.test.tsx` (renders title + destination, hooks mocked). `CalendarView.test.tsx` (3 tests: month header, event on correct day, overflow indicator). |
---
## Summary
| Phase | Steps | Est. Time |
|-------|-------|-----------|
| 1 — Unblock Runtime | 13 | ~45 min |
| 2 — Deduplicate Code | 47 | ~2 hours |
| 3 — Performance & UX | 811 | ~1.5 hours |
| 4 — Monitoring & Testing | 1214 | ~1 hour |
| **Total** | **14** | **~5 hours** |