version: "3.8"

services:
  # 1. pgvector Database Layer (PostgreSQL 15 pre-loaded with vector support)
  postgres_vector:
    image: pgvector/pgvector:pg15
    container_name: neuralvault_postgres
    restart: always
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres_secure_password
      POSTGRES_DB: neuralvault_db
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
      # Mount initial database schema script
      - ./backend/schema.sql:/docker-entrypoint-initdb.d/schema.sql

  # 2. NoSQL Logging Layer (MongoDB 6.0 for session tracing & RAG evaluations)
  mongo_db:
    image: mongo:6.0
    container_name: neuralvault_mongodb
    restart: always
    ports:
      - "27017:27017"
    volumes:
      - mongo_data:/data/db

  # 3. Cache & Limiter Layer (Redis 7.0 for sliding window rate limits & result caching)
  redis_cache:
    image: redis:7.0-alpine
    container_name: neuralvault_redis
    restart: always
    ports:
      - "6379:6379"
    volumes:
      - redis_data:/data

  # 4. FastAPI Python Backend Service
  backend:
    build:
      context: .
      dockerfile: Dockerfile
    container_name: neuralvault_backend
    restart: always
    depends_on:
      - postgres_vector
      - mongo_db
      - redis_cache
    ports:
      - "8000:8000"
    environment:
      # Database connection URIs
      DATABASE_URL: postgresql://postgres:postgres_secure_password@postgres_vector:5432/neuralvault_db
      MONGO_URL: mongodb://mongo_db:27017/
      DB_NAME: neuralvault
      UPSTASH_REDIS_REST_URL: http://redis_cache:6379
      UPSTASH_REDIS_REST_TOKEN: local_bypass_token
      
      # completions API keys (fill in as needed in .env override)
      GROQ_API_KEY: ${GROQ_API_KEY:-}
      
      # Pool variables
      POSTGRES_POOL_SIZE: 10
      CORS_ORIGINS: "*"

  # 5. React Frontend Client SPA
  frontend:
    image: node:18-alpine
    container_name: neuralvault_frontend
    restart: always
    working_dir: /app
    volumes:
      - ./frontend:/app
    ports:
      - "3000:3000"
    environment:
      - REACT_APP_BACKEND_URL=http://localhost:8000
    command: npm start

volumes:
  postgres_data:
  mongo_data:
  redis_data: