blueprint:
  name: "Custom: Power Spike Tracker"
  description: >
    Monitors a list of power sensors and triggers when consumption spikes
    beyond a defined ratio compared to the previous reading. Optionally
    turns off the associated switch.
  domain: automation
  input:
    power_sensors:
      name: Power Sensors
      description: 'List of power sensors to monitor. Switch entity ids will be calculated by replacing `sensor.` and `_power` substrings. I.e. for `sensor.my_switch_power` switch entity must be `switch.my_switch`.'
      selector:
        entity:
          domain: sensor
          multiple: true

    spike_ratio:
      name: Power Spike Ratio
      description: Ratio threshold (e.g. 2.0 means power doubled)
      default: 2.0
      selector:
        number:
          min: 1.0
          max: 10.0
          step: 0.1
          
    threshold_value:
      name: Minimum Power Threshold
      description: Ignore spikes if current power is below this value
      default: 5
      selector:
        number:
          min: 0
          max: 5000
          step: 1
          unit_of_measurement: "W"          
          
    auto_turn_off:
      name: Auto Turn Off Switch
      description: 'If true, turn off the switch linked to the sensor that spiked'
      default: false
      selector:
        boolean:

mode: restart

trigger:
  - platform: state
    entity_id: !input power_sensors

variables:
  spike_ratio: !input spike_ratio
  auto_turn_off: !input auto_turn_off
  threshold_value: !input threshold_value 
  entity: "{{ trigger.entity_id }}"
  prev: "{{ trigger.from_state.state | float(0) }}"
  curr: "{{ trigger.to_state.state | float(0) }}"
  # Derive switch name if convention is consistent (sensor.<name>_power → switch.<name>)
  switch_entity: >
    {{ entity | regex_replace('^sensor\\.', 'switch.') | regex_replace('_power$', '') }}

condition:
  - condition: template
    value_template: >
      {{ curr > threshold_value and prev > 0 and (curr / prev) >= spike_ratio }}

action:
  - service: notify.notify
    data:
      message: >
        Power spike detected on {{ entity }}:
        {{ prev }}W → {{ curr }}W (ratio {{ (curr/prev) | round(2) }})

  - choose:
      - conditions: "{{ auto_turn_off }}"
        sequence:
          - service: switch.turn_off
            target:
              entity_id: "{{ switch_entity }}"