unifi-udm-protect-mqtt.sh

#!/bin/bash

# Unifi Video Vars
UNIFI_MOTION_LOG=/logs/events.cameras.log

# MQTT Vars
MQTT_BROKER="${MQTT_BROKER:-192.168.1.1}"
MQTT_PORT="${MQTT_PORT:-1883}"
MQTT_TOPIC_BASE="${MQTT_TOPIC_BASE:-unifi/camera/motion}"

MQTT_START_PAYLOAD="${MQTT_START_PAYLOAD:-Start}"
MQTT_STOP_PAYLOAD="${MQTT_STOP_PAYLOAD:-Stop}"

# MQTT User/Pass Vars, only use if needed
#MQTT_USER="YOUR_USERNAME"
#MQTT_PASS="YOUR_PASSWORD"
#MQTT_ID="yourid"  ## To make it work with hassio

PREVIOUS_MESSAGE=""

# --------------------------------------------------------------------------------
# Script starts here

# Check if a username/password is defined and if so create the vars to pass to the cli
if [[ -n "$MQTT_USER" && -n "$MQTT_PASS" ]]; then
  MQTT_USER_PASS="-u $MQTT_USER -P $MQTT_PASS"
else
  MQTT_USER_PASS=""
fi

# Check if a MQTT_ID has been defined, needed for newer versions of Home Assistant
if [[ -n "$MQTT_ID" ]]; then
  MQTT_ID_OPT="-I $MQTT_ID"
else
  MQTT_ID_OPT=""
fi

while inotifywait -e modify $UNIFI_MOTION_LOG; do
    LAST_MESSAGE=`grep "verbose: motion." $UNIFI_MOTION_LOG | tail -n1 `

    if [[ "$PREVIOUS_MESSAGE" == "$LAST_MESSAGE" ]]; then
        echo " same skipping: $PREVIOUS_MESSAGE"
    else
        echo "PREVIOUS_MESSAGE: $PREVIOUS_MESSAGE"
        echo "LAST_MESSAGE: $LAST_MESSAGE"

        PREVIOUS_MESSAGE="$LAST_MESSAGE"

        LAST_CAM=`echo $LAST_MESSAGE | awk -F 'verbose: motion.' '{print $2}'| cut -d ' ' -f2- | awk -F ' ' '{print $1}' | tr '[:upper:]' '[:lower:]' | sed -r 's/[^a-zA-Z0-9\-]+/_/g'`
        LAST_EVENT=`echo $LAST_MESSAGE | awk -F 'verbose: motion.' '{print $2}' | awk -F ' ' '{print $1}'`

        if [[ $LAST_EVENT == "event.start" ]]; then
            echo " * Motion started on $LAST_CAM"
            mosquitto_pub -h $MQTT_BROKER -p $MQTT_PORT $MQTT_USER_PASS -r $MQTT_ID_OPT -t $MQTT_TOPIC_BASE/$LAST_CAM -m "$MQTT_START_PAYLOAD" &
        else
            echo " * Motion stopped on $LAST_CAM"
            mosquitto_pub -h $MQTT_BROKER -p $MQTT_PORT $MQTT_USER_PASS -r $MQTT_ID_OPT -t $MQTT_TOPIC_BASE/$LAST_CAM -m "$MQTT_STOP_PAYLOAD" &
        fi
    fi
done