fix: Home Assistant: fix brightness only lights (#26560)

Author: Koenkk

lib/extension/homeassistant.ts

@@ -536,13 +536,23 @@ export default class HomeAssistant extends Extension {
                     },
                 };
 
-                discoveryEntry.discovery_payload.supported_color_modes = [
-                    'brightness',
+                const colorModes = [
                     hasColorXY && !preferHS ? 'xy' : null,
                     (!hasColorXY || preferHS) && hasColorHS ? 'hs' : null,
                     hasColorTemp ? 'color_temp' : null,
                 ].filter((c) => c);
 
+                if (colorModes.length) {
+                    discoveryEntry.discovery_payload.supported_color_modes = colorModes;
+                } else {
+                    /**
+                     * All bulbs support brightness, note that `brightness` cannot be combined
+                     * with other color modes.
+                     * https://github.com/Koenkk/zigbee2mqtt/issues/26520#issuecomment-2692432058
+                     */
+                    discoveryEntry.discovery_payload.supported_color_modes = ['brightness'];
+                }
+
                 if (hasColorTemp) {
                     const colorTemps = (exposes as zhc.Light[])
                         .map((expose) => expose.features.find((e) => e.name === 'color_temp'))

test/extensions/homeassistant.test.ts

@@ -141,7 +141,7 @@ describe('Extension: HomeAssistant', () => {
             name: null,
             schema: 'json',
             state_topic: 'zigbee2mqtt/ha_discovery_group',
-            supported_color_modes: ['brightness', 'xy', 'color_temp'],
+            supported_color_modes: ['xy', 'color_temp'],
             effect: true,
             effect_list: [
                 'blink',
@@ -165,6 +165,33 @@ describe('Extension: HomeAssistant', () => {
             qos: 1,
         });
 
+        payload = {
+            availability: [{topic: 'zigbee2mqtt/bridge/state', value_template: '{{ value_json.state }}'}],
+            brightness: true,
+            brightness_scale: 254,
+            command_topic: 'zigbee2mqtt/bulb_enddevice/set',
+            device: {
+                identifiers: ['zigbee2mqtt_0x0017880104e45553'],
+                manufacturer: 'Sengled',
+                model: 'Element classic (A19)',
+                model_id: 'E11-G13',
+                name: 'bulb_enddevice',
+                via_device: 'zigbee2mqtt_bridge_0x00124b00120144ae',
+            },
+            name: null,
+            object_id: 'bulb_enddevice',
+            origin: origin,
+            schema: 'json',
+            state_topic: 'zigbee2mqtt/bulb_enddevice',
+            supported_color_modes: ['brightness'],
+            unique_id: '0x0017880104e45553_light_zigbee2mqtt',
+        };
+
+        expect(mockMQTTPublishAsync).toHaveBeenCalledWith('homeassistant/light/0x0017880104e45553/light/config', stringify(payload), {
+            retain: true,
+            qos: 1,
+        });
+
         payload = {
             availability: [{topic: 'zigbee2mqtt/bridge/state', value_template: '{{ value_json.state }}'}],
             command_topic: 'zigbee2mqtt/ha_discovery_group/set',
@@ -381,7 +408,7 @@ describe('Extension: HomeAssistant', () => {
             availability: [{topic: 'zigbee2mqtt/bridge/state', value_template: '{{ value_json.state }}'}],
             brightness: true,
             brightness_scale: 254,
-            supported_color_modes: ['brightness', 'color_temp'],
+            supported_color_modes: ['color_temp'],
             min_mireds: 250,
             max_mireds: 454,
             command_topic: 'zigbee2mqtt/bulb/set',
@@ -1633,7 +1660,7 @@ describe('Extension: HomeAssistant', () => {
             name: null,
             schema: 'json',
             state_topic: 'zigbee2mqtt/ha_discovery_group_new',
-            supported_color_modes: ['brightness', 'xy', 'color_temp'],
+            supported_color_modes: ['xy', 'color_temp'],
             effect: true,
             effect_list: [
                 'blink',
@@ -2101,7 +2128,7 @@ describe('Extension: HomeAssistant', () => {
             name: null,
             schema: 'json',
             state_topic: 'zigbee2mqtt/ha_discovery_group',
-            supported_color_modes: ['brightness', 'xy', 'color_temp'],
+            supported_color_modes: ['xy', 'color_temp'],
             effect: true,
             effect_list: [
                 'blink',
@@ -2145,7 +2172,7 @@ describe('Extension: HomeAssistant', () => {
             name: null,
             schema: 'json',
             state_topic: 'zigbee2mqtt/ha_discovery_group',
-            supported_color_modes: ['brightness', 'xy', 'color_temp'],
+            supported_color_modes: ['xy', 'color_temp'],
             effect: true,
             effect_list: [
                 'blink',
@@ -2200,7 +2227,7 @@ describe('Extension: HomeAssistant', () => {
             name: null,
             schema: 'json',
             state_topic: 'zigbee2mqtt/bulb',
-            supported_color_modes: ['brightness', 'color_temp'],
+            supported_color_modes: ['color_temp'],
             object_id: 'bulb',
             unique_id: '0x000b57fffec6a5b2_light_zigbee2mqtt',
             origin: origin,