sessy battery control

# Requirements:
#   - One or more Sessy devices
#   - PimDoos' Sessy integration https://github.com/PimDoos/ha-sessy
#   - nordpool integration
#   - TheFes' variables sensor https://community.home-assistant.io/t/wth-cant-input-helpers-be-read-only-in-ui/467562/13
#   - Adding the correct entity_id's in the # CHANGE_ME blocks near the bottom.

automation:
  - id: "sessy_battery_control"
    alias: "Sessy battery control"
    description: ""
    trigger:
      - platform: time_pattern
        hours: "*"
        minutes: "0"
        seconds: "10"
    condition: []
    action:
      choose:
        - conditions:
            - condition: template
              value_template: "{{ is_state('binary_sensor.sessy_cheapest_hours_night', 'on') }}"
          sequence:
            - service: script.sessy_start_charge
        - conditions:
            - condition: template
              value_template: "{{ is_state('binary_sensor.sessy_cheapest_hours_day', 'on') }}"
          sequence:
            - service: script.sessy_start_charge
        - conditions:
            - condition: template
              value_template: "{{ states('sensor.nordpool') | float > ( state_attr('sensor.variables', 'variables').sessy_battery_control_stored_price | float * 1.20 ) }}"
          sequence:
            - event: set_variable
              event_data:
                key: sessy_desired_strategy
                value: nom
            - service: script.sessy_set_strategy
      default:
        - event: set_variable
          event_data:
            key: sessy_desired_strategy
            value: idle
        - service: script.sessy_set_strategy

template:
  - binary_sensor:
      - name: "Sessy cheapest hours night"
        unique_id: sessy_cheapest_hours_night
        state: >-
          {% set night=state_attr( 'sensor.nordpool', 'raw_today')[:12] |sort(attribute='value') %}
          {{   (now() >= night[0].start and now() <= night[0].end)
            or (now() >= night[1].start and now() <= night[1].end)
            or (now() >= night[2].start and now() <= night[2].end) }}
  - binary_sensor:
      - name: "Sessy cheapest hours day"
        unique_id: sessy_cheapest_hours_day
        state: >-
          {% set day=state_attr( 'sensor.nordpool', 'raw_today')[12:] |sort(attribute='value') %}
          {{   (now() >= day[0].start and now() <= day[0].end)
            or (now() >= day[1].start and now() <= day[1].end)
            or (now() >= day[2].start and now() <= day[2].end) }}

script:
  sessy_start_charge:
    sequence:
      - event: set_variable
        event_data:
          key: sessy_desired_strategy
          value: api
      - service: script.sessy_set_strategy
      - delay:
          hours: 0
          minutes: 0
          seconds: 5
          milliseconds: 0
      - event: set_variable
        event_data:
          key: sessy_desired_setpoint
          value: "-1700"
      - service: script.sessy_set_setpoint
      - event: set_variable
        event_data:
          key: sessy_battery_control_stored_price
          value: "{{ states('sensor.nordpool') | float(3) }}"
  sessy_reset_last_charge_price:
    sequence:
      - event: set_variable
        event_data:
          key: sessy_battery_control_stored_price
          value: 0.172
  sessy_set_strategy:
    sequence:
      - service: select.select_option
        data:
          option: "{{ state_attr('sensor.variables', 'variables').sessy_desired_strategy }}"
        target:
          entity_id:
            # CHANGE_ME
            - select.sessy_xxxx_power_strategy
            - select.sessy_yyyy_power_strategy
  sessy_set_setpoint:
    sequence:
      - service: number.set_value
        data:
          value: "{{ state_attr('sensor.variables', 'variables').sessy_desired_setpoint }}"
        target:
          entity_id:
            # CHANGE_ME
            - number.sessy_xxxx_power_setpoint
            - number.sessy_yyyy_power_setpoint