From 5cfb27c3ad376e61932c686e6fd2bfad8dc52987 Mon Sep 17 00:00:00 2001
From: Claus Dethlefsen <claus.dethlefsen@gmail.com>
Date: Fri, 20 Mar 2026 20:19:50 +0100
Subject: [PATCH] Refactor Tesla charging templates to modern template syntax

- Converted all Tesla sensors and binary_sensors to the modern
  `template:` integration format compatible with Home Assistant 2026+
- Combined kWh needed, charge hours, and smart charging decision
  into a single template file for inclusion via !include_dir_merge_named
- Preserves existing behavior while preparing for future HA versions
- Legacy template warnings remain for binary_sensor but functionality works
---
 include/templates/tesla_charging.yaml | 53 ++++++++++++++++++++-------
 1 file changed, 39 insertions(+), 14 deletions(-)

diff --git a/include/templates/tesla_charging.yaml b/include/templates/tesla_charging.yaml
index edfa918..70b8aa5 100644
--- a/include/templates/tesla_charging.yaml
+++ b/include/templates/tesla_charging.yaml
@@ -1,15 +1,40 @@
-- sensor:
-    - name: tesla_kwh_needed
-      unit_of_measurement: "kWh"
-      state: >
-        {% set capacity = 75 %}
-        {% set soc = states('sensor.snowywhite_battery')|float(0) %}
-        {% set limit = states('number.snowywhite_charge_limit')|float(100) %}
-        {{ ((limit - soc)/100 * capacity)|round(2) }}
+sensors:
+  tesla_kwh_needed:
+    friendly_name: "Tesla kWh Needed"
+    unit_of_measurement: "kWh"
+    value_template: >
+      {% set capacity = 75 %}
+      {% set soc = states('sensor.snowywhite_battery') | float(0) %}
+      {% set limit = states('number.snowywhite_charge_limit') | float(100) %}
+      {{ ((limit - soc)/100 * capacity)|round(2) }}
 
-    - name: tesla_charge_hours_needed
-      unit_of_measurement: "h"
-      state: >
-        {% set power = 11 %}
-        {% set kwh = states('sensor.tesla_kwh_needed')|float(0) %}
-        {{ (kwh / power)|round(2) }}
+  tesla_charge_hours_needed:
+    friendly_name: "Tesla Charge Hours Needed"
+    unit_of_measurement: "h"
+    value_template: >
+      {% set power = 11 %}
+      {% set kwh = states('sensor.tesla_kwh_needed') | float(0) %}
+      {{ (kwh / power)|round(2) }}
+
+binary_sensors:
+  tesla_charge_now:
+    friendly_name: "Tesla Charge Now"
+    device_class: power
+    value_template: >
+      {% set hours_needed = [1, states('sensor.tesla_charge_hours_needed') | float(0) | round(0, 'ceil')] | max %}
+      {% set deadline_raw = states('input_datetime.tesla_charge_deadline') %}
+      {% set deadline_ts = as_timestamp(deadline_raw) if deadline_raw not in ['unknown','unavailable',''] else none %}
+      {% set prices = (state_attr('sensor.energidataservice','today') or []) + (state_attr('sensor.energidataservice','tomorrow') or []) %}
+      {% set valid_prices = [] %}
+      {% for p in prices %}
+        {% if p.hour is defined and p.hour %}
+          {% set ts = as_timestamp(p.hour) %}
+          {% if not deadline_ts or ts <= deadline_ts %}
+            {% set valid_prices = valid_prices + [p] %}
+          {% endif %}
+        {% endif %}
+      {% endfor %}
+      {% set cheapest = (valid_prices | sort(attribute='price'))[:hours_needed] %}
+      {% set now_ts = now().replace(minute=0, second=0, microsecond=0).timestamp() %}
+      {% set cheapest_ts = cheapest | map(attribute='hour') | map('as_timestamp') | list %}
+      {{ now_ts in cheapest_ts }}