Charging sessions, ERE and status in Home Assistant

# secrets.yaml
# Plak je token precies zoals het dashboard het toont. Het begint niet met joulo_.
joulo_api_auth: "Bearer JOUW_API_TOKEN"

# configuration.yaml • Joulo sensors
# Elke sensor heeft een unique_id. Dan maakt Home Assistant na een YAML-reload
# geen nieuwe entiteit aan, en kun je de sensor in de interface hernoemen.
rest:
  - resource: https://api.joulo.nl/functions/v1/api/chargers
    scan_interval: 300
    headers:
      Authorization: !secret joulo_api_auth
    sensor:
      - name: "Joulo Charger Status"
        unique_id: joulo_charger_status
        value_template: >-
          {{ value_json.chargers[0].status | default('unknown') }}
      - name: "Joulo Session kWh"
        unique_id: joulo_session_kwh
        value_template: >-
          {% set s = value_json.chargers[0].current_session | default(none) %}
          {{ (s.kwh_so_far if s else 0) | float(0) }}
        unit_of_measurement: "kWh"
        device_class: energy
        state_class: total_increasing
      # Geschatte netto-opbrengst van de lopende sessie in euro. 0 als je niet laadt.
      - name: "Joulo Opbrengst Huidige Sessie"
        unique_id: joulo_opbrengst_huidige_sessie
        value_template: >-
          {% set s = value_json.chargers[0].current_session | default(none) %}
          {{ (s.estimated_euro if s and s.estimated_euro is not none else 0) | float(0) }}
        unit_of_measurement: "EUR"
        device_class: monetary
      # RFID/TAG-ID van de actieve sessie • handig voor EVCC om
      # de auto achter de sessie te identificeren.
      - name: "Joulo Active TAG ID"
        unique_id: joulo_active_tag_id
        value_template: >-
          {% set s = value_json.chargers[0].current_session | default(none) %}
          {{ s.id_tag if s and s.id_tag else '' }}
    binary_sensor:
      - name: "Joulo Is Charging"
        unique_id: joulo_is_charging
        value_template: "{{ value_json.chargers[0].is_charging | default(false) }}"
        device_class: power

  - resource: https://api.joulo.nl/functions/v1/api/energy
    scan_interval: 3600
    headers:
      Authorization: !secret joulo_api_auth
    sensor:
      - name: "Joulo Total kWh"
        unique_id: joulo_total_kwh
        value_template: "{{ value_json.total_kwh | float(0) }}"
        unit_of_measurement: "kWh"
        device_class: energy
        state_class: total_increasing
      - name: "Joulo Total ERE"
        unique_id: joulo_total_ere
        value_template: "{{ value_json.total_ere_credits | float(0) }}"
        state_class: total_increasing

  - resource: https://api.joulo.nl/functions/v1/api/sessions?limit=10
    scan_interval: 600
    headers:
      Authorization: !secret joulo_api_auth
    sensor:
      - name: "Joulo Last Session kWh"
        unique_id: joulo_last_session_kwh
        value_template: "{{ value_json.sessions[0].kwh | float(0) }}"
        unit_of_measurement: "kWh"
        device_class: energy
      - name: "Joulo Last Session ERE"
        unique_id: joulo_last_session_ere
        value_template: "{{ value_json.sessions[0].ere_credits | float(0) }}"

  - resource: https://api.joulo.nl/functions/v1/api/ere-position
    scan_interval: 3600
    headers:
      Authorization: !secret joulo_api_auth
    sensor:
      # Verkocht en nog niet op je rekening: klaar voor uitbetaling plus gereserveerd.
      - name: "Joulo Nog Uit Te Betalen"
        unique_id: joulo_nog_uit_te_betalen
        value_template: >-
          {{ ((value_json.payable.net_eur | float(0))
            + (value_json.reserved.net_eur | float(0))) | round(2) }}
        unit_of_measurement: "EUR"
        device_class: monetary