# Derived template sensors for the eg4-battery daemon's 3-pack stack.
# Include into configuration.yaml as:
#     template: !include eg4_battery/template_sensors.yaml
#
# Per-pack entities created:
#   sensor.lifepower4_N_pack_power         W    (V × I, signed; + = charging)
#   sensor.lifepower4_N_temperature_max    °C   (max of 5 temp sensors)
#   sensor.lifepower4_N_cell_imbalance_pct %    (delta / min_cell) × 100
#
# Stack-wide rollups:
#   sensor.lifepower4_stack_pack_power_total  W  (sum of all 3 pack_powers)
#   sensor.lifepower4_stack_soc_avg           %  (average SoC across packs)
#   sensor.lifepower4_stack_temperature_max   °C (hottest point anywhere)

- sensor:
    # ---- pack 1 ----
    - name: "lifepower4_1 pack_power"
      unique_id: lifepower4_1_pack_power
      unit_of_measurement: "W"
      device_class: power
      state_class: measurement
      state: >
        {% set v = states('sensor.lifepower4_1_pack_voltage') | float(0) %}
        {% set i = states('sensor.lifepower4_1_pack_current') | float(0) %}
        {{ (v * i) | round(1) }}

    - name: "lifepower4_1 temperature_max"
      unique_id: lifepower4_1_temperature_max
      unit_of_measurement: "°C"
      device_class: temperature
      state_class: measurement
      state: >
        {% set t = [
          states('sensor.lifepower4_1_temperature_01') | int(0),
          states('sensor.lifepower4_1_temperature_02') | int(0),
          states('sensor.lifepower4_1_temperature_03') | int(0),
          states('sensor.lifepower4_1_temperature_04') | int(0),
          states('sensor.lifepower4_1_temperature_pcb') | int(0),
        ] %}
        {{ t | max }}

    - name: "lifepower4_1 cell_imbalance_pct"
      unique_id: lifepower4_1_cell_imbalance_pct
      unit_of_measurement: "%"
      state_class: measurement
      state: >
        {% set d = states('sensor.lifepower4_1_cell_voltage_delta_mv') | float(0) %}
        {% set mn = states('sensor.lifepower4_1_cell_voltage_min') | float(0) %}
        {{ (d / (mn * 1000) * 100) | round(3) if mn > 0 else 0 }}

    # ---- pack 2 ----
    - name: "lifepower4_2 pack_power"
      unique_id: lifepower4_2_pack_power
      unit_of_measurement: "W"
      device_class: power
      state_class: measurement
      state: >
        {% set v = states('sensor.lifepower4_2_pack_voltage') | float(0) %}
        {% set i = states('sensor.lifepower4_2_pack_current') | float(0) %}
        {{ (v * i) | round(1) }}

    - name: "lifepower4_2 temperature_max"
      unique_id: lifepower4_2_temperature_max
      unit_of_measurement: "°C"
      device_class: temperature
      state_class: measurement
      state: >
        {% set t = [
          states('sensor.lifepower4_2_temperature_01') | int(0),
          states('sensor.lifepower4_2_temperature_02') | int(0),
          states('sensor.lifepower4_2_temperature_03') | int(0),
          states('sensor.lifepower4_2_temperature_04') | int(0),
          states('sensor.lifepower4_2_temperature_pcb') | int(0),
        ] %}
        {{ t | max }}

    - name: "lifepower4_2 cell_imbalance_pct"
      unique_id: lifepower4_2_cell_imbalance_pct
      unit_of_measurement: "%"
      state_class: measurement
      state: >
        {% set d = states('sensor.lifepower4_2_cell_voltage_delta_mv') | float(0) %}
        {% set mn = states('sensor.lifepower4_2_cell_voltage_min') | float(0) %}
        {{ (d / (mn * 1000) * 100) | round(3) if mn > 0 else 0 }}

    # ---- pack 3 ----
    - name: "lifepower4_3 pack_power"
      unique_id: lifepower4_3_pack_power
      unit_of_measurement: "W"
      device_class: power
      state_class: measurement
      state: >
        {% set v = states('sensor.lifepower4_3_pack_voltage') | float(0) %}
        {% set i = states('sensor.lifepower4_3_pack_current') | float(0) %}
        {{ (v * i) | round(1) }}

    - name: "lifepower4_3 temperature_max"
      unique_id: lifepower4_3_temperature_max
      unit_of_measurement: "°C"
      device_class: temperature
      state_class: measurement
      state: >
        {% set t = [
          states('sensor.lifepower4_3_temperature_01') | int(0),
          states('sensor.lifepower4_3_temperature_02') | int(0),
          states('sensor.lifepower4_3_temperature_03') | int(0),
          states('sensor.lifepower4_3_temperature_04') | int(0),
          states('sensor.lifepower4_3_temperature_pcb') | int(0),
        ] %}
        {{ t | max }}

    - name: "lifepower4_3 cell_imbalance_pct"
      unique_id: lifepower4_3_cell_imbalance_pct
      unit_of_measurement: "%"
      state_class: measurement
      state: >
        {% set d = states('sensor.lifepower4_3_cell_voltage_delta_mv') | float(0) %}
        {% set mn = states('sensor.lifepower4_3_cell_voltage_min') | float(0) %}
        {{ (d / (mn * 1000) * 100) | round(3) if mn > 0 else 0 }}

    # ---- stack-wide rollups ----
    - name: "lifepower4_stack pack_power_total"
      unique_id: lifepower4_stack_pack_power_total
      unit_of_measurement: "W"
      device_class: power
      state_class: measurement
      state: >
        {% set p = [
          states('sensor.lifepower4_1_pack_power') | float(0),
          states('sensor.lifepower4_2_pack_power') | float(0),
          states('sensor.lifepower4_3_pack_power') | float(0),
        ] %}
        {{ p | sum | round(1) }}

    - name: "lifepower4_stack soc_avg"
      unique_id: lifepower4_stack_soc_avg
      unit_of_measurement: "%"
      device_class: battery
      state_class: measurement
      state: >
        {% set s = [
          states('sensor.lifepower4_1_soc') | float(0),
          states('sensor.lifepower4_2_soc') | float(0),
          states('sensor.lifepower4_3_soc') | float(0),
        ] %}
        {{ (s | sum / s | length) | round(1) }}

    - name: "lifepower4_stack temperature_max"
      unique_id: lifepower4_stack_temperature_max
      unit_of_measurement: "°C"
      device_class: temperature
      state_class: measurement
      state: >
        {% set t = [
          states('sensor.lifepower4_1_temperature_max') | int(0),
          states('sensor.lifepower4_2_temperature_max') | int(0),
          states('sensor.lifepower4_3_temperature_max') | int(0),
        ] %}
        {{ t | max }}

# --- integration → energy (pack_power integrated to Wh) ---
# Paste this at the top level of configuration.yaml, NOT inside `template:`:
#
#   sensor:
#     - platform: integration
#       source: sensor.lifepower4_1_pack_power
#       name: lifepower4_1_pack_energy
#       unit_prefix: k
#       round: 3
#       method: left
#     # ... repeat for pack 2 and 3 ...
#
# Then wire the resulting sensor.lifepower4_N_pack_energy into the HA
# Energy dashboard → Home battery storage → one entry per pack.