services:

  # ── FastAPI backend ──────────────────────────────────────────────────────────
  backend:
    container_name: rag_backend
    build:
      context: ..
      dockerfile: docker/Dockerfile.backend
    ports:
      - "8000:8000"
    volumes:
      - ../backend:/app/backend          # live-reload in dev
      - ../uploads:/app/uploads          # persisted uploaded PDFs
      - chroma_data:/app/data/chroma_db  # persisted ChromaDB vectors
    env_file:
      - ../.env
    environment:
      - APP_ENV=development
      - MONGODB_URL=mongodb://mongodb:27017
      - CHROMA_PERSIST_PATH=/app/data/chroma_db
      - UPLOAD_DIR=/app/uploads/documents
    depends_on:
      mongodb:
        condition: service_healthy
    restart: unless-stopped

  # ── Streamlit frontend ───────────────────────────────────────────────────────
  frontend:
    container_name: rag_frontend
    build:
      context: ..
      dockerfile: docker/Dockerfile.frontend
    ports:
      - "8501:8501"
    volumes:
      - ../frontend:/app/frontend        # live-reload in dev
    environment:
      # The frontend calls the backend by Docker service name
      - BACKEND_URL=http://backend:8000
    depends_on:
      - backend
    restart: unless-stopped

  # ── MongoDB ──────────────────────────────────────────────────────────────────
  mongodb:
    image: mongo:7
    container_name: rag_mongodb
    ports:
      - "27017:27017"
    volumes:
      - mongodb_data:/data/db
    environment:
      - MONGO_INITDB_DATABASE=academic_research_rag
    command: >
      mongod
      --quiet
      --setParameter logComponentVerbosity={verbosity:0}
      --setParameter logLevel=1
    healthcheck:
      test: ["CMD", "mongosh", "--eval", "db.adminCommand('ping')"]
      interval: 10s
      timeout: 5s
      retries: 5
      start_period: 10s
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"
    restart: unless-stopped

volumes:
  mongodb_data:
  chroma_data: