Report/Detect unavailable sensors and binary sensors (non)matching a regular expression

Unavailability_Detector.yaml

blueprint:
  name: Unavailability Detector
  description: Regularly test all sensors for unavailability or "unknown"-ness.
  domain: automation
  input:
    when_hours:
      name: The time pattern (hour) of when to run.
      description: >
        https://www.home-assistant.io/docs/automation/trigger/#time-pattern-trigger
      default: '*'
      selector:
        text:
          multiline: false
    when_minutes:
      name: The time pattern (minute) of when to run.
      description: >
        https://www.home-assistant.io/docs/automation/trigger/#time-pattern-trigger
      default: '30'
      selector:
        text:
          multiline: false
    exclude:
      name: Excluded Sensors
      description: >
        There are some weird sensors out there, we might want to ignore. 
        Only entities are supported, devices must be expanded
      default: []
      selector:
        entity:
          multiple: true
          domain:
            - binary_sensor
            - sensor            
    exclude_regexp:
      name: Excluded Sensors, RegExp
      description: >
        There are some weird sensors out there, we might want to ignore. 
      default: 'DontMatchAnySensorsAtAll'
      selector:
        text:
          multiline: false
    actions:
      name: Actions
      description: 'Notifications or similar to be run. {{sensors}} is replaced with the names[] of devices indicating a problem.'
      selector:
        action: {}
variables:
  exclude: !input 'exclude'
  exclude_regexp: !input 'exclude_regexp'  
  sensors: >-
    {%- set result = namespace(sensors=[]) -%}
    {%- for s in states.sensor -%}
      {%- if s.state is search("unavail|unknown") and (not s.entity_id in exclude and not s.entity_id is search(exclude_regexp)) -%}
        {%- set result.sensors = result.sensors + [s.entity_id] -%}
      {% endif -%}
    {%- endfor -%} 
    {%- for s in states.binary_sensor -%}
      {%- if s.state is search("unavail|unknown") and (not s.entity_id in exclude and not s.entity_id is search(exclude_regexp)) -%}
        {%- set result.sensors = result.sensors + [s.entity_id] -%}
      {%- endif -%}
    {%- endfor -%}
    {{result.sensors}}
trigger:
- platform: time_pattern
  minutes: !input 'when_minutes'
  hours: !input 'when_hours'
condition:
- '{{ sensors|length != 0 }}'
action:
- choose: []
  default: !input 'actions'
mode: single