services:
  # ==========================================
  # 1. Vector Database Service
  # ==========================================
  db:
    image: pgvector/pgvector:pg16
    container_name: localragvault-db
    restart: always
    environment:
      POSTGRES_DB: ${DB_NAME:-localragvault}
      POSTGRES_USER: ${DB_USER:-postgres}
      POSTGRES_PASSWORD: ${DB_PASSWORD:-localragvault_secure_pass}
    volumes:
      - pgdata:/var/lib/postgresql/data
    ports:
      - "5433:5432"
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${DB_USER:-postgres} -d ${DB_NAME:-localragvault}"]
      interval: 5s
      timeout: 5s
      retries: 5
      start_period: 10s
    networks:
      - vault-net

  # ==========================================
  # 2. FastAPI Backend Service
  # ==========================================
  api:
    build:
      context: .
      target: api
    container_name: localragvault-api
    restart: always
    env_file:
      - .env.docker
    environment:
      # Explicitly override database host to point to the 'db' service
      DB_HOST: db
    ports:
      - "8000:8000"
    extra_hosts:
      # Ensures host.docker.internal resolves on Linux desktops
      - "host.docker.internal:host-gateway"
    volumes:
      - uploads_data:/app/uploads
      - logs_data:/app/logs
    depends_on:
      db:
        condition: service_healthy
    networks:
      - vault-net

  # ==========================================
  # 3. Streamlit UI Dashboard
  # ==========================================
  ui:
    build:
      context: .
      target: ui
    container_name: localragvault-ui
    restart: always
    env_file:
      - .env.docker
    environment:
      # Inside Docker, Streamlit reaches FastAPI via internal DNS ('http://api:8000')
      API_BASE_URL: http://api:8000
    ports:
      - "8501:8501"
    extra_hosts:
      - "host.docker.internal:host-gateway"
    depends_on:
      - api
    networks:
      - vault-net

# ==========================================
# Named Volumes & Private Networks
# ==========================================
volumes:
  pgdata:
    name: localragvault_pgdata
  uploads_data:
    name: localragvault_uploads
  logs_data:
    name: localragvault_logs

networks:
  vault-net:
    name: localragvault_network
    driver: bridge