services:
  # ── Qdrant Vector Database ──────────────────────────────────────────────────
  qdrant:
    image: qdrant/qdrant:latest
    container_name: rag_qdrant
    restart: unless-stopped
    ports:
      - "6333:6333"   # HTTP API
      - "6334:6334"   # gRPC API
    volumes:
      - qdrant_data:/qdrant/storage
    healthcheck:
      test: ["CMD-SHELL", "bash -c 'echo > /dev/tcp/localhost/6333' 2>/dev/null && exit 0 || exit 1"]
      interval: 10s
      timeout: 5s
      retries: 10
      start_period: 20s

  # ── PostgreSQL (optional – only used when USE_POSTGRES=true) ────────────────
  postgres:
    image: postgres:16-alpine
    container_name: rag_postgres
    restart: unless-stopped
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-postgres}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-password}
      POSTGRES_DB: ${POSTGRES_DB:-legal_rag}
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-postgres}"]
      interval: 10s
      timeout: 5s
      retries: 5

  # ── FastAPI Backend ─────────────────────────────────────────────────────────
  backend:
    build:
      context: .               # project root — gives access to requirements.txt
      dockerfile: backend/Dockerfile
    container_name: rag_backend
    restart: unless-stopped
    env_file:
      - .env
    environment:
      # Override DB host to point to the postgres container
      POSTGRES_SERVER: postgres
      # Point Qdrant client to the qdrant container over HTTP
      QDRANT_URL: http://qdrant:6333
    ports:
      - "8001:8001"
    volumes:
      # Persist SQLite DB and uploaded documents
      - backend_data:/app/app/data
    depends_on:
      qdrant:
        condition: service_started
      postgres:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8001/docs"]
      interval: 20s
      timeout: 15s
      retries: 15
      start_period: 300s   # InLegalBERT + BGE reranker can take 3-5 min to load

  # ── React Frontend (Nginx) ──────────────────────────────────────────────────
  frontend:
    build:
      context: ./frontend-react
      dockerfile: Dockerfile
    container_name: rag_frontend
    restart: unless-stopped
    ports:
      - "8080:80"
    depends_on:
      - backend

volumes:
  qdrant_data:
  postgres_data:
  backend_data: