services:

  webserver:
    build:
      context: .
      dockerfile: nginx/Dockerfile
    container_name: nginx_webserver
    volumes:
      - nginx_logs:/var/log/nginx
    restart: unless-stopped
    depends_on:
      api:
        condition: service_started
    networks:
      - proxy       # external — reachable by your reverse proxy / traefik
      - internal    # needs a path to the api container

  api:
    build: .
    container_name: wp_api
    environment:
      # Preferred: the API builds its own connection string from these and
      # encodes the password automatically (no manual URL-encoding needed).
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_DB: ${POSTGRES_DB}
      POSTGRES_HOST: db
      # Optional full-URL override (must be URL-encoded if used).
      DATABASE_URL: ${DATABASE_URL:-}
      # Signs login session cookies. REQUIRED — compose fails fast if it's unset,
      # and the API refuses to start in production without it (see server/auth.py).
      AUTH_SECRET_KEY: ${AUTH_SECRET_KEY:?set AUTH_SECRET_KEY in .env (see server/.env.example)}
      AUTH_SESSION_HOURS: ${AUTH_SESSION_HOURS:-12}
      # Optional — SMTP password for WP-assignment emails. Email is off by
      # default and enabled from the Admin console; this is the only email
      # secret and it is never stored in the DB. Leave unset until configured.
      SMTP_PASSWORD: ${SMTP_PASSWORD:-}
    restart: unless-stopped
    depends_on:
      db:
        condition: service_healthy        # waits for postgres to accept connections
    networks:
      - internal

  db:
    image: postgres:16-alpine
    container_name: wp_db
    environment:
      POSTGRES_DB: ${POSTGRES_DB}
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
    volumes:
      - pgdata:/var/lib/postgresql/data
    restart: unless-stopped
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - internal

  # Scheduled pg_dump backups. Writes gzipped, timestamped dumps to ./backups on
  # the host (sync that folder offsite from the host — this container has no
  # internet egress). See scripts/db-backup.sh and DEPLOYMENT.md § Backups.
  backup:
    build:
      context: .
      dockerfile: scripts/backup.Dockerfile      # postgres client + openssl
    container_name: wp_db_backup
    environment:
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_DB: ${POSTGRES_DB}
      PGHOST: db
      BACKUP_DIR: /backups
      BACKUP_KEEP: ${BACKUP_KEEP:-14}                       # keep the newest N dumps
      BACKUP_INTERVAL_SECONDS: ${BACKUP_INTERVAL_SECONDS:-86400}   # 86400 = daily
      # Set BACKUP_ENC_PASSPHRASE in .env to encrypt dumps at rest (AES-256).
      # Required once the DB holds customer IP. Keep the passphrase off this host.
      BACKUP_ENC_PASSPHRASE: ${BACKUP_ENC_PASSPHRASE:-}
    volumes:
      - ./scripts:/scripts:ro
      - ./backups:/backups
    entrypoint: ["/bin/sh", "/scripts/backup-cron.sh"]
    restart: unless-stopped
    depends_on:
      db:
        condition: service_healthy
    networks:
      - internal

volumes:
  pgdata:
  nginx_logs:

networks:
  proxy:
    name: proxy
    external: true
  internal:
    internal: true    # no outbound internet access from api/db