Add Supla gate (#31643)

* Add support for Supla gate with sensor

* Fix Supla switch module description and state access

* Add docs to methods of Supla gate

* Add missing comma

* Remove unused import

* Sort imports of Supla cover

* Add returning availability for every Supla device

* Use direct access to dict

* Remove deprecated property "hidden"

* Remove unused constant

* Revert using get function on dict

homeassistant/components/supla/cover.py

@@ -1,12 +1,19 @@
-"""Support for Supla cover - curtains, rollershutters etc."""
+"""Support for Supla cover - curtains, rollershutters, entry gate etc."""
 import logging
 from pprint import pformat
 
-from homeassistant.components.cover import ATTR_POSITION, CoverDevice
+from homeassistant.components.cover import (
+    ATTR_POSITION,
+    DEVICE_CLASS_GARAGE,
+    CoverDevice,
+)
 from homeassistant.components.supla import SuplaChannel
 
 _LOGGER = logging.getLogger(__name__)
 
+SUPLA_SHUTTER = "CONTROLLINGTHEROLLERSHUTTER"
+SUPLA_GATE = "CONTROLLINGTHEGATE"
+
 
 def setup_platform(hass, config, add_entities, discovery_info=None):
     """Set up the Supla covers."""
@@ -15,7 +22,14 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
 
     _LOGGER.debug("Discovery: %s", pformat(discovery_info))
 
-    add_entities([SuplaCover(device) for device in discovery_info])
+    entities = []
+    for device in discovery_info:
+        device_name = device["function"]["name"]
+        if device_name == SUPLA_SHUTTER:
+            entities.append(SuplaCover(device))
+        elif device_name == SUPLA_GATE:
+            entities.append(SuplaGateDoor(device))
+    add_entities(entities)
 
 
 class SuplaCover(SuplaChannel, CoverDevice):
@@ -51,3 +65,38 @@ class SuplaCover(SuplaChannel, CoverDevice):
     def stop_cover(self, **kwargs):
         """Stop the cover."""
         self.action("STOP")
+
+
+class SuplaGateDoor(SuplaChannel, CoverDevice):
+    """Representation of a Supla gate door."""
+
+    @property
+    def is_closed(self):
+        """Return if the gate is closed or not."""
+        state = self.channel_data.get("state")
+        if state and "hi" in state:
+            return state.get("hi")
+        return None
+
+    def open_cover(self, **kwargs) -> None:
+        """Open the gate."""
+        if self.is_closed:
+            self.action("OPEN_CLOSE")
+
+    def close_cover(self, **kwargs) -> None:
+        """Close the gate."""
+        if not self.is_closed:
+            self.action("OPEN_CLOSE")
+
+    def stop_cover(self, **kwargs) -> None:
+        """Stop the gate."""
+        self.action("OPEN_CLOSE")
+
+    def toggle(self, **kwargs) -> None:
+        """Toggle the gate."""
+        self.action("OPEN_CLOSE")
+
+    @property
+    def device_class(self):
+        """Return the class of this device, from component DEVICE_CLASSES."""
+        return DEVICE_CLASS_GARAGE