# templates.yaml

# ——————————————————————————————————————————————
# Battery Charging Window Active
# ——————————————————————————————————————————————
- binary_sensor:
    - name: "Battery Charging Window Active"
      device_class: power

      # ON if now() falls inside any slot
      state: >
        {{ state_attr('binary_sensor.battery_charging_window_active','in_charge_window') }}

      attributes:
        current_slot_start: >
          {%- set slots  = state_attr('sensor.scheduled_battery_charge_times','charge_times') or [] -%}
          {%- set now_ts = as_timestamp(now())                                  -%}
          {%- for slot in slots                                                 -%}
            {%- set start_ts = as_timestamp(slot.start)                         -%}
            {%- set end_ts   = as_timestamp(slot.end)                           -%}
            {%- if start_ts <= now_ts <= end_ts                                  %}
              {{ slot.start }}
              {%- break                                                         -%}
            {%- endif                                                           -%}
          {%- endfor                                                            -%}

        current_slot_end: >
          {%- set slots  = state_attr('sensor.scheduled_battery_charge_times','charge_times') or [] -%}
          {%- set now_ts = as_timestamp(now())                                  -%}
          {%- for slot in slots                                                 -%}
            {%- set start_ts = as_timestamp(slot.start)                         -%}
            {%- set end_ts   = as_timestamp(slot.end)                           -%}
            {%- if start_ts <= now_ts <= end_ts                                  %}
              {{ slot.end }}
              {%- break                                                         -%}
            {%- endif                                                           -%}
          {%- endfor                                                            -%}

        next_slot_start: >
          {%- set slots  = state_attr('sensor.scheduled_battery_charge_times','charge_times') or [] -%}
          {%- set now_ts = as_timestamp(now())                                  -%}
          {%- set ns = namespace(next='')                                       -%}
          {%- for slot in slots | sort(attribute='start')                       -%}
            {%- set start_ts = as_timestamp(slot.start)                         -%}
            {%- if start_ts > now_ts                                            -%}
              {%- set ns.next = slot.start                                      -%}
              {%- break                                                         -%}
            {%- endif                                                           -%}
          {%- endfor                                                            -%}
          {{ ns.next if ns.next else "No Future Slots" }}

        next_slot_end: >
          {%- set slots  = state_attr('sensor.scheduled_battery_charge_times','charge_times') or [] -%}
          {%- set now_ts = as_timestamp(now())                                  -%}
          {%- set ns = namespace(next='')                                       -%}
          {%- for slot in slots | sort(attribute='start')                       -%}
            {%- set start_ts = as_timestamp(slot.start)                         -%}
            {%- if start_ts > now_ts                                            -%}
              {%- set ns.next = slot.end                                        -%}
              {%- break                                                         -%}
            {%- endif                                                           -%}
          {%- endfor                                                            -%}
          {{ ns.next if ns.next else "No Future Slots" }}

        now: >
          {{ now() }}

        in_charge_window: >
          {{ state_attr('binary_sensor.battery_charging_window_active','current_slot_start') | default('') | length > 0 }}

        all_slots_today: >
          {{ state_attr('sensor.scheduled_battery_charge_times','charge_times') }}