Sauna valmis -template sensor

template:
  - sensor:
      - name: "Sauna valmis"
        unit_of_measurement: "min"
        state: >-
          {% set living_room_temp = states('sensor.ruuvitag_olohuone_temperature')|float|round(1, default=0) %}
          {% set sauna_temp = states('sensor.ruuvitag_sauna_temperature')|float|round(1, default=0) %}
          {% set target = states('input_number.sauna_valmis')|float|round(1, default=0) %}
          {% set change = states('sensor.sauna_temperature_change_per_hour')|float|round(1, default=0) %}
          {% set eta = ((target - sauna_temp) * 60 / change)|round(0, default=0) %}

          {% if (sauna_temp - 5) > living_room_temp and sauna_temp < target and eta < 120 %}
          {{ eta }}
          {% else %}
          0
          {% endif %}