Write custom component for Home Assistant

   What is the domain?
   > dummy_garage

   What is the name of your integration?
   > Dummy Garage

   What is your GitHub handle?
   > @adafycheng

   What PyPI package and version do you depend on? Leave blank for none.
   >

   How will your integration gather data?

   Valid values are assumed_state, calculated, cloud_polling, cloud_push, local_polling, local_push

   More info @ https://developers.home-assistant.io/docs/creating_integration_manifest#iot-class

   > local_polling

   Does Home Assistant need the user to authenticate to control the device/service? (yes/no) [yes]
   > no

   Is the device/service discoverable on the local network? (yes/no) [no]
   > no

   Is this a helper integration? (yes/no) [no]
   > yes

   Can the user authenticate the device using OAuth2? (yes/no) [no]
   > no

   Scaffolding integration for the dummy_garage integration...
   Writing tests/components/dummy_garage/__init__.py
   Writing homeassistant/components/dummy_garage/const.py
   Writing homeassistant/components/dummy_garage/manifest.json
   Writing homeassistant/components/dummy_garage/__init__.py
   Updating dummy_garage manifest: {'codeowners': ['@adafycheng'], 'iot_class': 'local_polling'}

   Scaffolding config_flow_helper for the dummy_garage integration...
   Writing homeassistant/components/dummy_garage/const.py
   Writing homeassistant/components/dummy_garage/__init__.py
   Writing homeassistant/components/dummy_garage/sensor.py
   Writing homeassistant/components/dummy_garage/config_flow.py
   Writing tests/components/dummy_garage/test_config_flow.py
   Writing tests/components/dummy_garage/test_init.py
   Updating dummy_garage manifest: {'config_flow': True}
   Updating dummy_garage strings: ['config', 'options']

   Running hassfest to pick up new information.

   Running gen_requirements_all to pick up new information.

   Running script/translations_develop to pick up new translation strings.

   **************************

   Integration code has been generated

   Added the following files:
   - homeassistant/components/dummy_garage/config_flow.py
   - homeassistant/components/dummy_garage/manifest.json
   - homeassistant/components/dummy_garage/const.py
   - homeassistant/components/dummy_garage/sensor.py
   - homeassistant/components/dummy_garage/__init__.py

   Added the following tests:
   - tests/components/dummy_garage/test_init.py
   - tests/components/dummy_garage/test_config_flow.py

   The next step is to look at the files and deal with all areas marked as TODO.

   import voluptuous as vol

   from homeassistant.components.sensor import (
       PLATFORM_SCHEMA,
       SensorDeviceClass,
       SensorEntity,
       SensorStateClass,
   )

   DEFAULT_NAME = "Dummy Garage - Sensor"

   PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
   {
       vol.Required(CONF_MAC): cv.string,
       vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
   }
   )

   async def async_setup_platform(
       hass: HomeAssistant,
       config: ConfigType,
       add_entities: AddEntitiesCallback,
       discovery_info: DiscoveryInfoType | None = None,
   ) -> None:
       """Set up the sensor platform."""
       name = config[CONF_NAME]
       mac_addr = config[CONF_MAC]

       add_entities([DummyGarageSensor(mac_addr, name)], True)

   class DummyGarageSensor(SensorEntity):
       """Representation of a Sensor."""

       def __init__(self, mac, name) -> None:
           super().__init__()
           self._mac = mac
           self._name = name
           self._attr_name = name
           self._attr_native_unit_of_measurement = TEMP_CELSIUS
           self._attr_device_class = SensorDeviceClass.TEMPERATURE
           self._attr_state_class = SensorStateClass.MEASUREMENT

       @property
       def name(self) -> str:
           """Return the name of the switch."""
           return self._name

       @property
       def unique_id(self) -> str:
           """Return a unique, Home Assistant friendly identifier for this entity."""
           return self._mac.replace(":", "")

       def update(self) -> None:
           """Fetch new state data for the sensor.

           This is the only method that should fetch new data for Home Assistant.
           """
           self._attr_native_value = 23

   binary_sensor:
   - platform: dummy_garage
     name: "Dummy Car Presence"
     mac: "12:34:12:34:12:34"
     device_class: "presence"

   lock:
   - platform: dummy_garage
     name: "Dummy Garage Lock"
     mac: "EF:EF:EF:EF:EF:EF"

   switch:
   - platform: dummy_garage
     name: "Dummy Garage Switch"
     mac: "AB:AB:AB:CD:CD:CD"

   sensor:
   - platform: dummy_garage
     name: "Dummy Temperature"
     mac: "56:34:12:90:78:56"