temetro/backend

temetro backend

TypeScript + Express + Postgres API for temetro. Authentication is powered by Better Auth (email/password with verification, password reset, and multi-tenant organizations with role-based access control). Patient records are scoped to an organization (a clinic) and exposed over a small REST API that mirrors the frontend's Patient shape exactly.

Quick start (Docker)

docker compose up            # db + backend + frontend — no setup needed

No .env or manual secret generation is required: on first start the backend generates any missing secrets (BETTER_AUTH_SECRET, AI_CREDENTIALS_KEY) and persists them to a Docker volume, so they stay stable across restarts. Create a .env (from .env.example) only if you want to override something — your own auth secret, SMTP, etc.

• Frontend → http://localhost:3000
• Backend → http://localhost:4000 (health: GET /health, auth health: GET /api/auth/ok)
• Postgres → localhost:5432

Run only the API + database: docker compose up db backend. Browse the DB with Adminer: docker compose --profile tools up adminer → http://localhost:8080.

Migrations are applied automatically on container start (node dist/migrate.js).

Local development (without Docker)

npm install
cp .env.example .env          # point DATABASE_URL at a local Postgres (localhost:5432)
npm run db:migrate            # apply migrations (drizzle-kit)
npm run dev                   # tsx watch on http://localhost:4000

Auth & schema workflow

The Better Auth tables are generated into src/db/schema/auth.ts from src/auth.ts. Re-run after changing auth config/plugins, then regenerate the SQL migration:

npm run auth:generate   # better-auth CLI -> src/db/schema/auth.ts
npm run db:generate     # drizzle-kit -> ./drizzle/*.sql
npm run db:migrate      # apply

API

All patient routes require a signed-in user (Better Auth session cookie) and an active organization; access is gated by the caller's clinic role.

Method	Path	Permission	Notes
GET	/api/patients	patient:read	list patients in the active clinic
GET	/api/patients/:fileNumber	patient:read	one patient (404 if absent)
POST	/api/patients	patient:write	create (409 if file number exists)
PUT	/api/patients/:fileNumber	patient:write	replace the full record
DELETE	/api/patients/:fileNumber	patient:delete	remove a patient

Other org-scoped resources follow the same pattern (CRUD, role-gated):

Resource	Base path	Permission	Notes
Appointments	/api/appointments	appointment:*	list / create / update / delete
Prescriptions	/api/prescriptions	prescription:*	prescriber defaults to the signed-in user
Tasks	/api/tasks	task:*	PATCH /:id for partial updates / the done toggle
Notes	/api/notes	— (author-scoped)	private to the signed-in author
Activity	GET /api/activity	— (any member)	audit feed of record changes
Analytics	GET /api/analytics	— (any member)	computed clinic aggregates
Conversations	/api/conversations	— (participant-scoped)	staff messaging; real-time over Socket.io
Notifications	/api/notifications	— (per-recipient)	auto-generated; read-all + per-id read

Real-time messaging and live notifications are delivered over Socket.io, attached to the same HTTP server; the handshake is authenticated with the Better Auth session cookie.

Auth endpoints (sign up / in / out, verify email, reset password, organizations & invitations) are served by Better Auth under /api/auth/*.

Roles

Role	Patient access	Prescriptions	Lab results	Clinic management
owner	read / write / delete	read / write / delete	read / write	full
admin	read / write / delete	read / write / delete	read / write	members, invitations, settings
doctor / member (clinician)	read / write	read / write / delete	read / write	—
reception	read / write (demographics)	—	—	—
pharmacy	read	read / write	—	—
lab	read	—	read / write	—

Environment

See .env.example. If SMTP_HOST is unset, verification / reset / invitation emails are printed to the server console instead of being sent — no setup required for local development.