From 515599ad139c27ddf9a776a5023f9916f1273456 Mon Sep 17 00:00:00 2001
From: Koen Kanters <koenkanters94@gmail.com>
Date: Wed, 14 Jul 2021 19:47:02 +0200
Subject: [PATCH] Discover color temperature range for Home Assistant groups.
 https://github.com/Koenkk/zigbee2mqtt/issues/8032

---
 lib/extension/homeassistant.js | 11 +++++++----
 test/homeassistant.test.js     |  4 ++++
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/lib/extension/homeassistant.js b/lib/extension/homeassistant.js
index de51510621..7aa97dc93d 100644
--- a/lib/extension/homeassistant.js
+++ b/lib/extension/homeassistant.js
@@ -108,10 +108,13 @@ class HomeAssistant extends Extension {
                 discoveryEntry.discovery_payload.supported_color_modes = colorModes;
             }
 
-            if (entityType === 'device' && hasColorTemp) {
-                const colorTemp = firstExpose.features.find((e) => e.name === 'color_temp');
-                discoveryEntry.discovery_payload.max_mireds = colorTemp.value_max;
-                discoveryEntry.discovery_payload.min_mireds = colorTemp.value_min;
+            if (hasColorTemp) {
+                const colorTemps = exposes.map((expose) => expose.features.find((e) => e.name === 'color_temp'))
+                    .filter((e) => e);
+                const max = Math.max(...colorTemps.map((e) => e.value_max));
+                const min = Math.min(...colorTemps.map((e) => e.value_min));
+                discoveryEntry.discovery_payload.max_mireds = max;
+                discoveryEntry.discovery_payload.min_mireds = min;
             }
 
             const effect = definition && definition.exposes.find((e) => e.type === 'enum' && e.name === 'effect');
diff --git a/test/homeassistant.test.js b/test/homeassistant.test.js
index 2bf37af44c..8f92f28228 100644
--- a/test/homeassistant.test.js
+++ b/test/homeassistant.test.js
@@ -69,6 +69,8 @@ describe('HomeAssistant extension', () => {
                "name":"ha_discovery_group",
                "sw_version":this.version,
             },
+            "max_mireds": 500,
+            "min_mireds": 150,
             "json_attributes_topic":"zigbee2mqtt/ha_discovery_group",
             "name":"ha_discovery_group",
             "schema":"json",
@@ -1713,6 +1715,8 @@ describe('HomeAssistant extension', () => {
                "sw_version":this.version,
             },
             "json_attributes_topic":"zigbee2mqtt/ha_discovery_group",
+            "max_mireds": 500,
+            "min_mireds": 150,
             "name":"ha_discovery_group",
             "schema":"json",
             "state_topic":"zigbee2mqtt/ha_discovery_group",