Access to trigger.to_state.context from a different entity?

[walberjunior]

@tom_l

template:
  - trigger:
      - platform: state
        entity_id: switch.shelly_1pm_garage_switch_0
		to: "on"
    sensor:
      - name: "Garage Switch On Context"
        state: >
		  {% set c_id = trigger.to_state.context.id %}
		  {% set c_parent = trigger.to_state.context.parent_id %}
          {% set c_user = trigger.to_state.context.user_id %}
		  {% if c_id != none and c_parent == none and c_user == none %}
		    physical
		  {% elif c_id != none and c_parent == none and c_user != none %}
		    dashboard_ui
		  {% elif c_id != none and c_parent != none and c_user == none %}
		    automation
		  {% else %}
		    unknown
		  {% endif %}

Would it be possible to dynamically create attributes for all lights?
Or create the sensors dynamically?
Maybe using something like this:

Template to automatically generate template sensors that tell you how many lights are turned on in an area

template: - sensor: {%- for a in states.light | map(attribute='entity_id') | map('area_name') | unique | list %} - name: {{ a | title }} Lights On state: > {% raw %}{{ expand(area_entities('{% endraw %}{{ a }}'{% raw %}) | select('match', 'light')) | selectattr('state','eq','on') | list | count }}{% endraw %} {%- endfor -%}