version: '3.8'

services:
  # 1. Frontend Gateway & Static File Server
  nginx:
    build:
      context: ./frontend
      dockerfile: Dockerfile
    ports: ["80:80", "443:443"]
    volumes:
      - ./configs/nginx/conf.d:/etc/nginx/conf.d
    depends_on:
      app-server:
        condition: service_started

  # 2. Backend Service (Golang)
  app-server:
    build: 
      context: ./backend
      dockerfile: Dockerfile
    restart: always
    healthcheck:
      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:8080/ping"]
      interval: 10s
      timeout: 5s
      retries: 5
    environment:
      - DB_DSN=host=postgres user=${POSTGRES_USER} password=${DB_PASSWORD} dbname=${POSTGRES_DB} port=${POSTGRES_PORT} sslmode=disable
      - TD_DSN=root:taosdata@tcp(${TD_HOST}:${TD_PORT})/power_db
      - REDIS_ADDR=${REDIS_HOST}:${REDIS_PORT}
      - POSTGRES_USER=${POSTGRES_USER}
      - POSTGRES_PASSWORD=${DB_PASSWORD}
      - POSTGRES_DB=${POSTGRES_DB}
      - POSTGRES_HOST=${POSTGRES_HOST}
      - POSTGRES_PORT=${POSTGRES_PORT}
      - JWT_SECRET=${JWT_SECRET}
      - JWT_EXPIRE_HOURS=${JWT_EXPIRE_HOURS}
    volumes:
      - ./backend/logs:/app/logs
    ports:
      - "${PORT}:8080"
    depends_on:
      - postgres
      - tdengine
      - redis

  # 3. Database: PostgreSQL (Relational Data)
  postgres:
    image: postgres:15-alpine
    container_name: ems-postgres
    restart: always
    environment:
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${DB_PASSWORD}
      POSTGRES_DB: ${POSTGRES_DB}
    volumes:
      - pg_data:/var/lib/postgresql/data
    ports:
      - "5433:5432"

  # 4. Database: TDengine (Time-Series Data)
  tdengine:
    image: tdengine/tdengine:3.3.0.0
    container_name: ems-tdengine
    ports: ["6030:6030"]
    volumes:
      - ./data/taos/data:/var/lib/taos
      - ./data/taos/log:/var/log/taos
    environment:
      - TAOS_FIRST_EP=tdengine:6030

  # 5. Cache: Redis
  redis:
    image: redis:7-alpine
    container_name: ems-redis
    ports: ["6379:6379"]
    volumes:
      - ./data/redis:/data

  # 6. Message Broker: EMQX (MQTT)
  emqx:
    image: emqx/emqx:5.3.0
    ports: 
      - "1883:1883"  # MQTT TCP
      - "8083:8083"  # MQTT WebSocket
      - "18083:18083" # Dashboard
    # volumes:
    #   - ./configs/emqx:/opt/emqx/etc
    environment:
      - EMQX_ALLOW_ANONYMOUS=true # For dev only

  # 7. Backup Service (Sidecar)
  pg-backup:
    image: prodrigestivill/postgres-backup-local
    restart: always
    environment:
      - POSTGRES_HOST=postgres
      - POSTGRES_DB=${POSTGRES_DB}
      - POSTGRES_USER=${POSTGRES_USER}
      - POSTGRES_PASSWORD=${DB_PASSWORD}
      - SCHEDULE=@daily
      - BACKUP_KEEP_DAYS=7
      - BACKUP_DIR=/backups
    volumes:
      - ./backups/postgres:/backups
    depends_on:
      - postgres

volumes:
  pg_data:
    driver: local
  taos_data:
    driver: local