#!/bin/bash
# Return Codes:
# 0 - Ok!       - Up
# 1 - Warning   - Flaky
# 2 - Critical  - Down
# 3 - Unknown   - Ummm... What happened?!

print_usage() {
  echo "Usage: check_zigbee_battery.sh [Device-ID] [Warning percent] [Critical percent]"
  echo "Example: check_zigbee_battery.sh 84ba20fffe77b851 20 10"
}

function beenden {
  exit $1
}

#Parameter prüfen
if [ $# -ne 3 ]; then
  print_usage
  beenden 3
fi

ZigBeeDeviceID=$1
ZigBeeDeviceWarning=$2
ZigBeeDeviceCritical=$3

ZigBeeDeviceWarning=$(expr $ZigBeeDeviceWarning + 0)
ZigBeeDeviceCritical=$(expr $ZigBeeDeviceCritical + 0)

ZigBeeDeviceBattery=$(curl -S -m 5 http://172.30.80.246:8087/getPlainValue/zigbee.0.${ZigBeeDeviceID}.battery 2>/dev/null)

if [ $? -ne 0 ] ; then
	echo "ioBroker-API not available or wrong Zigbee-ID or no battery present"
	beenden 3
fi

ZigBeeDeviceBattery=$(expr $ZigBeeDeviceBattery + 0 2>/dev/null)

if [ $? -ne 0 ] ; then
        echo "Unknown: Got unknown value from ioBroker"
        beenden 3
fi


if [ $ZigBeeDeviceBattery -le $ZigBeeDeviceCritical ] ; then
	echo "Critical: Battery is at ${ZigBeeDeviceBattery}%, which is below Critical-Value (${ZigBeeDeviceCritical}%) | battery_percent=${ZigBeeDeviceBattery}"
	beenden 2
elif [ $ZigBeeDeviceBattery -le $ZigBeeDeviceWarning ] ; then
	echo "Warning: Battery is at ${ZigBeeDeviceBattery}%, which is below Warning-Value (${ZigBeeDeviceWarning}%) | battery_percent=${ZigBeeDeviceBattery}"
	beenden 1
else
	echo "OK: Battery is at ${ZigBeeDeviceBattery}% | battery_percent=${ZigBeeDeviceBattery}"
	beenden 0
fi

echo "Battery-Status unknown"
beenden 3