Sensor readings as text display

[house-of-abbey]

Sensor readings as text display

[philipabbey]

There's been a previous post requesting something similar here: https://community.home-assistant.io/t/home-assistant-app-for-garmin/637348/20, perhaps worth using the HA forum to home in more precisely on what might be involved? Then post a firm proposal here.

E.g. what's the JSON format look like? How closely does that map to HA YAML fields?

[philipabbey]

Current thinking is that we can offer a very basic status display for anything as short text. That potentially means that the JSON configuration supplies some code that is sent to the server for evaluation in a template, the response must be text, or more precisely text wrapped in JSON ( e.g. {status: "cover off"}) for the makeWebRequest() Connect IQ call. We would then use a menu item with text & sub-text to display the result on the second row.

This keeps the complexity in the JSON and on the server, and the watch implementation simple if limited.

If a toggle menu item needs to display alternative text (cover on/off), then we could (finally) implement a mapping from on/off to text from a definition in the JSON, so that no second API status update is required. This is important because each additional status update reduces the responsiveness of the menu to external changes (from outside of the watch app).

[JosephAbbey]

This would mean that you can render a temperature with "{{ states('sensor.my_temperature') }}°C" or a battery as "{{ states('sensor.my_battery_level') }}%".

I have been having some fun with the android version of this feature here.

[JosephAbbey]

Docs

POST to

https://<homeassistant>/api/template

with

{
    "template": "Paulus is at {{ states('device_tracker.paulus') }}!"
}

Returns the rendered template in plain text.

Paulus is at work!

Sample curl command:

curl -s -X POST \
  -H "Authorization: Bearer ${API_KEY}" \
  -H "Content-Type: application/json" \
  -d '{"template": "It is {{ now() }}!"}' ${URL}/template

Response:

It is 2024-01-12 18:48:40.429751+00:00!