Rain and Window Open Automation

Configuration
1

I have a working automation that my weather station alerts me when it rains and I have a window open.

My problem is that if all windows are closed it states the following.
It is raining and the is open. (NOTICE THE EXTRA SPACE BETWEEN the and is)
How can I get this to state either that xyz window is open or that all windows are closed.
Here is my current automation.

- id: "b8064a7b-6c95-4ec2-a665-c26a0a830cad"
  alias: "Rain Alert Window Open"
  trigger:
    - platform: numeric_state
      entity_id: sensor.5123_weather_event_rain
      above: "0"
  action:
    - service: notify.telegram
      data:
        message: "It is raining and the {{ dict((states | selectattr('entity_id', 'in', state_attr('group.contact_sensor_windows', 'entity_id')) | list) | groupby('state'))['on'] | map(attribute='name') | list | join(', ') }} is open."
        title: Rain Alert Window Open
  mode: single

Thank you for the help.

2

Not at all sure this will work, and there is probably better methods.

message: >
{% set windows = dict((states | selectattr('entity_id', 'in', state_attr('group.contact_sensor_windows', 'entity_id')) | list) | groupby('state'))['on'] | map(attribute='name') | list | join(', ') %}

{% if windows != " " %}
"It is raining and the " ~ {{ windows }} ~ " is open."
{% else%} 
"All windows are closed"
{% endif %}

I’m assuming there is a extra space as you said therefore != " "
But you can try the yaml in template editor first to see that it will work

3

You should avoid using {{ states | .....}} as it reevaluates the template on every entity update. At a minimum use {{ states.binary_sensor | ...}} but expand('group.contact_sensor_windows') is the better way to go.

- id: "b8064a7b-6c95-4ec2-a665-c26a0a830cad"
  alias: "Rain Alert Window Open"
  trigger:
    - platform: numeric_state
      entity_id: sensor.5123_weather_event_rain
      above: "0"
  action:
    - service: notify.telegram
      data:
        message: >
          It is raining and 
          {% set ow = expand('group.contact_sensor_windows')
          | selectattr('state', 'eq', 'on') | map(attribute='name') | list%}
          {%- set qty = ow | count -%}
          {%- if qty != 0 -%}
          {{-' the '}}{{-' and '.join((ow|join(', ')).rsplit(', ', 1)) }}
          {{-' is ' if qty==1 else ' are '}}open. 
          {% else %} all windows are closed. {% endif %}
        title: Rain Alert Window Open
  mode: single

FWIW, I preferred to have the areas for my notification instead of a long list of window entites.

Area-based template 
{% set ow = expand('group.all_window_sensors')
|selectattr('state','eq','on') | map(attribute='entity_id') |
map('area_name')  | unique | reject('eq',None) | sort | map('lower') | list %}
{% set qty = ow | count %}
{% if qty != 0 %}
There {{ 'is an' if qty==1 else 'are'}} open window{{' ' if qty==1 else 's '}}in the 
{{' and '.join((ow|join(', ')).rsplit(', ', 1)) }}. 
{% else %} All windows are closed. {% endif %}
4

Thank you works great

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