Waits til device is online and then sends the new compiled firmware

esphome-ota-update.sh

#!/bin/sh
  
# waits til device is online and then sends the new compiled firmware
# uses https://esphome.io/components/deep_sleep.html#deep-sleep-prevent-action but should also work without it

if [ $# -eq 0 ]; then
                echo "No arguments supplied"
                        exit 1
fi


devicename=$1
ota_topic="$devicename/ota_mode"
sleep_topic="$devicename/sleep_mode"

mosquitto_pub -h mqtt -t "$ota_topic" -m "ON" -r

# wait for any fresh status message from that device (on very rare conditions this could be the OFFLINE message)
mosquitto_sub -h mqtt -t "$devicename/status" -R -C 1

# republish ota_mode (now the sensor is awake) in case thr retained offline message was not received already by the sensor
mosquitto_pub -h mqtt -t "$ota_topic" -m "ON"

# upload firmware
docker run --rm --net=host -v "%%%insert_path_to_esphome_config%%%/":/config -it esphome/esphome upload $devicename.yaml

mosquitto_pub -h mqtt -t "$ota_topic" -m "" -r
mosquitto_pub -h mqtt -t "$sleep_topic" -m "ON"