# ==============================================================================
# Volcano Hybrid — synthesized runtime sensor (template fallback)
# ------------------------------------------------------------------------------
# Creates  sensor.volcano_runtime  — minutes since the climate entity last
# entered the `heat` state. Use this when your SavageNL integration version
# doesn't expose a current_on_time / runtime sensor directly (some versions
# only ship sensor.volcano_hybrid_auto_off_time, which is a countdown
# toward shutoff, not an elapsed-time counter).
#
# Paste into configuration.yaml under the top-level `template:` key.
# (If you already have a `template:` block, append the trigger entry as a
# new list item rather than starting a second top-level key.)
#
# Updates every minute while the device is heating; resets to 0 when the
# climate entity leaves `heat`. Verify after restart at:
#   Developer Tools → States → filter "volcano_runtime"
#
# Caveat: any momentary BLE dropout that flips climate.volcano_hybrid to
# `unavailable` and back will restart the runtime counter at 0. If your
# install drops a lot, see the "smoothing" note in the post body.
# ==============================================================================

template:
  - trigger:
      - platform: time_pattern
        minutes: "/1"             # update every minute while heating
    sensor:
      - name: "Volcano Runtime"
        unique_id: volcano_runtime_synthesized
        unit_of_measurement: min
        device_class: duration
        state: >
          {% if is_state('climate.volcano_hybrid', 'heat') %}
            {{ ((as_timestamp(now()) - as_timestamp(states.climate.volcano_hybrid.last_changed)) / 60) | int }}
          {% else %}
            0
          {% endif %}
        availability: >
          {{ states('climate.volcano_hybrid') not in ['unknown', 'unavailable'] }}