40227-vm/frontend/docs/zone-checkin-integration.md

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# Daily Zone Check-in Integration
## Purpose
Staff log a daily self-regulation "Emotional Zone" (blue/green/yellow/red).
The same state drives the dashboard check-in card, the `/zones-of-regulation`
overview cards, the profile unified results table, leader dashboard
completion/risk sections, and a notification-dropdown nudge when an eligible
user has not checked in today.
## Backend contract
`/api/zone_checkins` requires explicit `ZONE_CHECKIN` for personal reads/writes.
This personal workflow permission is not implied by `globalAccess`. The client
never computes the date; "today" is computed server-side from the user's campus
timezone, falling back to UTC for organization/school-scope staff without a
campus.
- `GET /today``{ date, zone, isCheckedInToday }`
- `POST /` `{ data: { zone } }` → record today's zone (upsert)
- `DELETE /today` → clear today's zone
- `GET /?from=&to=` → history `{ rows: [{ date, zone }], count }`
- `GET /completion` → leader/report scoped staff completion `{ summary, rows }`
with `READ_ZONE_CHECKIN_REPORTS`.
## Frontend Structure
- API/types: `shared/api/zoneCheckins.ts`, `shared/types/zoneCheckins.ts`
- Business: `business/zone-checkin/hooks.ts` (`useTodayZoneCheckIn`,
`useZoneCheckInHistory`, `useZoneCheckInCompletion`),
`business/zone-checkin/selectors.ts`
(`canZoneCheckIn`, `shouldNudgeZoneCheckIn`)
- Components: `components/zone-checkin/ZoneCheckInCard.tsx` (shared dashboard
card), `ZoneCheckInReminder.tsx` (banner), `ZoneCheckInSection.tsx` (composed
section), and the `/zones-of-regulation` overview cards.
## Behavior
- **Eligibility/nudge gating** requires the effective `ZONE_CHECKIN` permission.
Seed data grants it to staff users expected to complete the daily workflow
across organization, school, campus, and class scopes; custom permissions can
extend or remove it per user.
- **Dashboard**: the card is wired through `useDashboardPage` (which exposes
`showZoneCheckIn` + `needsZoneCheckIn`) with an optimistic shell value for snappy
selection.
- **Zones page**: the main zone overview cards call `useTodayZoneCheckIn`
through `useZonesOfRegulationPage`; selecting blue/green/yellow/red both opens
the zone detail panel and saves the eligible user's daily check-in. Parent
drill-down keeps the selection local and does not persist personal state; the
backend also rejects personal zone mutations in child scopes.
- **Notifications**: `business/top-bar` derives a single unread notification from
`shouldNudgeZoneCheckIn` (`buildTopBarNotifications`) — there is no backend
notifications store. The notification carries an `href`
(`APP_ROUTE_PATHS.zones`); clicking it navigates to `/zones-of-regulation`
(a react-router `Link`) and closes the dropdown.
- `useTodayZoneCheckIn` is disabled for users without `ZONE_CHECKIN` or when the
user is drilled into a child scope. Disabled callers receive empty local state
instead of stale cached check-in data. Its `error` surfaces **only**
save/clear failures; non-eligible users should not trigger the `/today`
request.
- **Leader dashboards**: `useDirectorDashboardPage` loads `useZoneCheckInCompletion`
with the effective tenant in its query key and appends Daily Zone Check-In rows
to the unified completion table. Non-green completed zones are shown as medium
risk in Risk Areas.
- **Profile**: the unified quiz/results table includes today's Daily Zone
Check-In for eligible users.
- **Content**: zone cards and page copy are backend-owned content catalog presets
(`regulation-zones`, `zones-of-regulation-page-content`) for new organizations.
## Tests
- `business/zone-checkin/selectors.test.ts` (eligibility + nudge),
`business/top-bar/selectors.test.ts` (notification builder + zones `href`),
`business/director-dashboard/selectors.test.ts`, `business/profile/selectors.test.ts`,
and `shared/api/zoneCheckins.test.ts`.
- Seeded e2e: `frontend/tests/e2e/zone-checkins.seeded.e2e.ts` (record /
read-back / clear today, invalid-zone rejection, external-role lockout).
## Verification
- `npm run typecheck`, `npm run lint`, `npm run test` pass.