version: '3.8'

services:
  # PostgreSQL Database with volume storage
  db:
    image: postgres:15-alpine
    restart: unless-stopped
    environment:
      POSTGRES_USER: ${DB_USER}
      POSTGRES_PASSWORD: ${DB_PASSWORD}
      POSTGRES_DB: ${DB_NAME}
    volumes:
      - pgdata:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${DB_USER}"]
      interval: 5s
      timeout: 5s
      retries: 5

  # Existing App Service
  app:
    build:
      context: .
      dockerfile: Dockerfile
      args:
        BROKER_URL: ${BROKER_URL}
        CLIENT_ID: ${CLIENT_ID}
        # Pass the internal docker URL to the build if needed, 
        # or rely on the environment variable override below.
        DATABASE_URL: postgres://${DB_USER:-postgres}:${DB_PASSWORD:-password}@db:5432/${DB_NAME:-app_db}
        TELEGRAM_BOT_TOKEN: ${TELEGRAM_BOT_TOKEN}
        TELEGRAM_CHAT_IDS: ${TELEGRAM_CHAT_IDS}
    restart: unless-stopped
    environment:
      - DATABASE_URL=postgres://${DB_USER}:${DB_PASSWORD}@db:5432/${DB_NAME}
      - BROKER_URL=${BROKER_URL}
      - CLIENT_ID=${CLIENT_ID}
      - TELEGRAM_BOT_TOKEN=${TELEGRAM_BOT_TOKEN}
      - TELEGRAM_CHAT_IDS=${TELEGRAM_CHAT_IDS}
      - MQTT_CLIENT_ID=${MQTT_CLIENT_ID}
    depends_on:
      db:
        condition: service_healthy

  # SvelteKit Frontend Service
  frontend:
    build:
      context: ./frontend
      dockerfile: Dockerfile
    restart: unless-stopped
    environment:
      - SERVICE_BASE_URL=http://app:3000
      - PORT=3000
      - HOST=0.0.0.0
      - ORIGIN=http://localhost:3000 
    depends_on:
      db:
        condition: service_healthy

volumes:
  pgdata: