version: '3.8'

services:
  ups-snmp:
    build: .
    container_name: ups-snmp-server
    restart: unless-stopped
    network_mode: host  # Required for SNMP to work properly
    privileged: true     # Required for USB device access
    ports:
      - "161:161/udp"
    volumes:
      # Mount USB devices from host
      - /dev/bus/usb:/dev/bus/usb:ro
      # Optional: Mount custom configs
      # - ./snmpd.conf:/etc/snmp/snmpd.conf:ro
      # - ./apcupsd.conf:/etc/apcupsd/apcupsd.conf:ro
    environment:
      - TZ=UTC
      # Optional: SNMP community strings (override defaults)
      - SNMP_COMMUNITY_RO=public
      - SNMP_COMMUNITY_RW=private
      - SNMP_COMMUNITY_PUBLIC=public

      # --- BATTERY THRESHOLDS ---
      # Set the battery level at which NAS should be notified/shutdown
      # Synology should be configured with a HIGHER value to act first
      - BATTERYLEVEL=15
      - MINUTES=5

      # --- NAS SHUTDOWN CONFIGURATION ---
      # Method 1 (RECOMMENDED): SNMP-based shutdown for Synology NAS
      # Configure Synology DSM UPS settings to use SNMP and set this to your NAS IP
      - SYNOLOGY_NAS_IP=192.168.1.100

      # Method 2 (FALLBACK): SSH-based shutdown
      # - NAS_SSH_HOST=192.168.1.100
      # - NAS_SSH_USER=admin
      # - NAS_SSH_PASSWORD=your_password
      # Or use SSH key:
      # - NAS_SSH_KEY=/path/to/ssh/key

      # Method 3: Webhook for Home Assistant or other automation
      # - SHUTDOWN_WEBHOOK=http://homeassistant:8123/api/webhook/ups_shutdown

      # Optional: Wake-on-LAN after power restoration
      # - NAS_MAC_ADDRESS=00:11:32:XX:XX:XX
      # - BROADCAST_IP=192.168.1.255
    logging:
      driver: json-file
      options:
        max-size: "10m"
        max-file: "3"