version: '3.8'

services:
  postgres:
    image: postgres:15
    container_name: flash_postgres
    environment:
      POSTGRES_USER: flash_user
      POSTGRES_PASSWORD: flash_pass
      POSTGRES_DB: flash_sale
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U flash_user -d flash_sale"]
      interval: 5s
      timeout: 5s
      retries: 5

  redis:
    image: redis:alpine
    container_name: flash_redis
    ports:
      - "6379:6379"
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 5s
      timeout: 5s
      retries: 5

  api:
    build: .
    command: ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "4"]
    deploy:
      replicas: 3
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    environment:
      - DATABASE_URL=postgresql+asyncpg://flash_user:flash_pass@postgres:5432/flash_sale
      - REDIS_HOST=redis
      - REDIS_PORT=6379
      - PYTHONPATH=/app
    volumes:
      - .:/app   

  nginx:
    image: nginx:alpine
    ports:
      - "80:80"
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
    depends_on:
      - api

volumes:
  postgres_data: