Move Platform StrEnum to const (#60857)

homeassistant/const.py

@@ -3,6 +3,8 @@ from __future__ import annotations
 
 from typing import Final
 
+from homeassistant.util.enum import StrEnum
+
 MAJOR_VERSION: Final = 2021
 MINOR_VERSION: Final = 12
 PATCH_VERSION: Final = "0.dev0"
@@ -16,6 +18,42 @@ REQUIRED_NEXT_PYTHON_HA_RELEASE: Final = "2022.1"
 # Format for platform files
 PLATFORM_FORMAT: Final = "{platform}.{domain}"
 
+
+class Platform(StrEnum):
+    """Available entity platforms."""
+
+    AIR_QUALITY = "air_quality"
+    ALARM_CONTROL_PANEL = "alarm_control_panel"
+    BINARY_SENSOR = "binary_sensor"
+    BUTTON = "button"
+    CALENDAR = "calendar"
+    CAMERA = "camera"
+    CLIMATE = "climate"
+    COVER = "cover"
+    DEVICE_TRACKER = "device_tracker"
+    FAN = "fan"
+    GEO_LOCATION = "geo_location"
+    HUMIDIFIER = "humidifier"
+    IMAGE_PROCESSING = "image_processing"
+    LIGHT = "light"
+    LOCK = "lock"
+    MAILBOX = "mailbox"
+    MEDIA_PLAYER = "media_player"
+    NOTIFY = "notify"
+    NUMBER = "number"
+    REMOTE = "remote"
+    SCENE = "scene"
+    SELECT = "select"
+    SENSOR = "sensor"
+    SIREN = "siren"
+    SST = "sst"
+    SWITCH = "switch"
+    TTS = "tts"
+    VACUUM = "vacuum"
+    WATER_HEATER = "water_heater"
+    WEATHER = "weather"
+
+
 # Can be used to specify a catch all when registering state or event listeners.
 MATCH_ALL: Final = "*"