Older adults often receive check-ins from family members, volunteers, and caregivers, but follow-up information is usually scattered between phone calls and personal notes.
This project provides one simple system to log each check-in, track mood after each visit, and see whether medication was taken.

• Frontend: React + Vite
• Backend: Node.js + Express
• Database: MongoDB Atlas + Mongoose

• 3 related collections: Senior, Companion, CheckInVisit
• Full CRUD for main entity CheckInVisit
• 2 relational endpoints:
  • GET /api/seniors/:id/check-ins
  • GET /api/companions/:id/check-ins
• 1 custom endpoint:
  • GET /api/stats/mood-summary
• Consistent API error contract:
  • { "error": string, "message": string, "details": any }
• React UI requirements covered:
  • 3 components (VisitsDashboard, VisitForm, VisitList)
  • loading + error states
  • controlled form
  • edit/delete with confirmation
  • search by senior name + filter by visit type
  • auto-refresh with setInterval and cleanup in useEffect

• frontend/: React app
• backend/: Express API
• docs/: ERD, report, seminar notes

1. Open terminal in project root:
   • cd "C:\Users\aminm\Documents\New project\da219b-senior-checkin-planner"
2. Create env files:
   • copy backend/.env.example to backend/.env
   • copy frontend/.env.example to frontend/.env
3. Set real Atlas URI in backend/.env:
   • MONGODB_URI=your_real_atlas_connection_string
4. Install dependencies:
   • npm install
   • npm install --prefix backend
   • npm install --prefix frontend
5. Seed realistic data:
   • npm run seed --prefix backend
6. Run app:
   • npm run dev
7. Verify:
   • Health: http://localhost:5000/api/health (should show "database":"connected")
   • Frontend: http://localhost:5173 (or next port if 5173 is busy)

• GET /api/check-in-visits
• GET /api/check-in-visits/:id
• POST /api/check-in-visits
• PUT /api/check-in-visits/:id
• DELETE /api/check-in-visits/:id

• GET /api/seniors
• GET /api/companions
• GET /api/seniors/:id/check-ins
• GET /api/companions/:id/check-ins

• GET /api/stats/mood-summary
• Optional query params:
  • seniorId=<objectId>
  • visitType=call|home_visit|video_call

• If MONGODB_URI is missing/placeholder, data endpoints return 503 with clear message.
• Health route always responds and shows DB state in database.
• ERD: docs/erd.md
• Final report: docs/report-final.md
• Drill script: docs/seminar-drill.md