Self-hosted, AI-assisted travel planner. Angular PWA frontend, NestJS API + background worker, PostgreSQL, Redis/BullMQ, and a Mistral-backed travel agent behind a strict tool boundary.

.env.example lists configuration names and non-secret defaults only. Real production secrets (database password, SMTP credentials, LLM API keys, etc.) are never committed and live only on the deployment host / secret store, supplied to containers as environment variables.

Repository layout

frontend/   Angular PWA (pnpm workspace member)
backend/    NestJS workspace: apps/api, apps/worker, libs/*
docker/     Production Dockerfiles and edge (Nginx) config
scripts/    Compose-invariant checks and TeamCity entry points
docs/       Specs, plans, and architecture documentation

Developer setup

pnpm install
pnpm dev:infra
DATABASE_URL=postgresql://travel_planner:travel_planner_dev@localhost:5432/travel_planner \
REDIS_URL=redis://localhost:6379 \
OIDC_ISSUER=https://idp.example.invalid/realms/travel-planner \
OIDC_AUDIENCE=travel-planner-api \
  pnpm --filter backend start:api
pnpm --filter frontend start

Run pending migrations against the dev database before starting the API for the first time:

export DATABASE_URL=postgresql://travel_planner:travel_planner_dev@localhost:5432/travel_planner
export REDIS_URL=redis://localhost:6379
export OIDC_ISSUER=https://idp.example.invalid/realms/travel-planner
export OIDC_AUDIENCE=travel-planner-api
pnpm --filter backend build:api && node backend/dist/apps/api/src/migration.js

pnpm dev:infra starts local PostgreSQL/Redis (see compose.dev.yml); pnpm dev:infra:down stops them.

Quality gates

pnpm lint
pnpm test
pnpm test:compose
pnpm build

TeamCity deployment scripts

TeamCity invokes repository-owned scripts rather than duplicating deployment logic in step configuration:

scripts/teamcity/validate.sh       # install, lint, test, compose-invariant check, build
scripts/teamcity/build-images.sh   # build + push immutable IMAGE_TAG images
scripts/teamcity/deploy.sh         # pull, migrate, compose up -d, smoke test
scripts/teamcity/smoke.sh          # health/root checks against APP_BASE_URL
scripts/teamcity/rollback.sh       # redeploy the previous IMAGE_TAG

deploy.sh never runs docker compose down as part of a routine deployment; rollback.sh never attempts an automatic database downgrade.

Production topology

Production Docker Compose (compose.yml) publishes exactly one host port, on the edge (Nginx) service, which serves the built Angular app and reverse-proxies /api/* and /health/* to the internal api service. api, worker, postgres, and redis are reachable only over the internal Docker network. See docs/architecture/deployment.md for the full contract and scripts/teamcity/ for the TeamCity-invoked build/deploy/rollback scripts.

Phase 01 status: foundation complete

GET /health/live — process liveness only, no dependency checks.
GET /health/ready — validates PostgreSQL and Redis connectivity.
GET /api/v1/version — safe build metadata only (appVersion, teamCityBuildNumber, sourceRevision); never database/Redis URLs.
The compiled no-op migration entry point (backend/dist/apps/api/src/migration.js) gives deploy.sh a stable container command contract; Phase 02 replaces its body with the real versioned migration runner.
Verified end-to-end: docker compose -f compose.yml up with a real TLS certificate serves /health/live, /health/ready, /, and /api/v1/version through the single published edge port, with postgres/redis/api/worker unreachable from the host.

Phase 02 status: OIDC auth, users, and trip core complete

Authentication: OIDC Authorization Code + PKCE against an external IdP (oidc-client-ts on the frontend, jose-based bearer-token verification on the backend). No local password storage; users are keyed by the OIDC sub claim and just-in-time provisioned on first login.
New required backend env vars: OIDC_ISSUER, OIDC_AUDIENCE (validated fail-fast like DATABASE_URL/REDIS_URL). New frontend build-time values: OIDC_ISSUER, OIDC_CLIENT_ID (baked into the production bundle by docker/edge.Dockerfile, never read from the container at runtime).
Real, versioned database migrations (node-pg-migrate, files under backend/migrations/) replace the Phase 01 no-op migration.ts body; the container command contract (node backend/dist/apps/api/src/migration.js) is unchanged. Database access goes through kysely (a type-safe query builder, not an ORM) over the existing pg.Pool; there is no schema auto-sync anywhere.
New routes: GET/PUT /api/v1/users/me(/preferences), GET/POST /api/v1/trips, GET/PATCH/DELETE /api/v1/trips/:tripId, GET/PUT /api/v1/trips/:tripId/settings, GET/PATCH/DELETE /api/v1/trips/:tripId/members(/:memberId), POST/GET/DELETE /api/v1/trips/:tripId/invitations(/:invitationId), POST /api/v1/invitations/:token/accept, GET/POST/PATCH/DELETE /api/v1/trips/:tripId/travelers(/:travelerId), GET/PUT/DELETE /api/v1/trips/:tripId/preference-overrides(/:overrideId).
Authorization is enforced backend-side by OidcAuthGuard (who) and TripMembershipGuard (trip access + @TripRoles('OWNER')), never only in the frontend. TripMember and Traveler are independent tables — a Traveler never implies or requires trip membership.
Trip.version optimistic locking: a stale PATCH (mismatched version) returns HTTP 409 and never silently overwrites; proven by both a mocked unit test and a real-database integration test.

Run backend integration tests (migration idempotency + optimistic-locking conflict) against compose.dev.yml:

pnpm dev:infra
DATABASE_URL=postgresql://travel_planner:travel_planner_dev@localhost:5432/travel_planner \
REDIS_URL=redis://localhost:6379 \
OIDC_ISSUER=https://idp.example.invalid/realms/travel-planner \
OIDC_AUDIENCE=travel-planner-api \
  pnpm --filter backend test:integration

Verified end-to-end against the real running API and a mocked IdP (local JWKS + discovery document): missing token → 401, valid token → /users/me succeeds and JIT-provisions the user, trip create/read, first PATCH with the correct version succeeds, a second PATCH reusing the stale version → 409, and a user with no trip_members row for the trip → 403.