Automation works but YAML is ugly

@ha-username wrote:

I’m using demultiplexers to publish topics for various sensors. Here’s one example:

- alias: OMG Pilight Elro demultiplexer
  id: 1a9a1234b34641c09824f583c33fd9f5
  trigger:
    platform: mqtt
    topic: home/OpenMQTTGateway_ESP8266_RF/PilighttoMQTT
  condition:
  - condition: template
    value_template: '{% if trigger.payload_json.protocol==''elro_800_contact'' %} true
      {% endif %}'
  action:
  - service: mqtt.publish
    data_template:
      topic: '{{ ''homeassistant/binary_sensor/'' + trigger.payload_json.protocol|string + trigger.payload_json.message.systemcode|string + trigger.payload_json.message.unitcode|string + ''/state'' }}'
      payload: 'ON'
  - service: mqtt.publish
    data_template:
      topic: '{{ ''homeassistant/binary_sensor/'' + trigger.payload_json.protocol|string + trigger.payload_json.message.systemcode|string + trigger.payload_json.message.unitcode|string + ''/config'' }}'
      payload: '{"name":"{{trigger.payload_json.protocol|string}}{{trigger.payload_json.message.systemcode|string}}{{trigger.payload_json.message.unitcode|string}}", "device_class": "motion", "state_topic": "homeassistant/binary_sensor/{{trigger.payload_json.protocol|string}}{{trigger.payload_json.message.systemcode|string}}{{trigger.payload_json.message.unitcode|string}}/state"}'

How can I make this shorter? Can I assign variables in the condition somehow? Any other code conventions I should be aware of?

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