Add OPENING & CLOSING state to MySensors cover (#47285)

* Added OPENING & CLOSING State Support

Added support for OPENING and CLOSING states using a combination of
the required V_ variables. Simplified the determination of the
cover's state by use of a new enumeration and single method allowing
the state to be used by all three HomeAssistant query methods.

* Fixes for HomeAssistant Style

Corrections to style to allow flake8, isort, and black to pass.

* Peer Review Changes

Added @unique to the main enumeration. Removed unnecessary parens from
door state logic. Reordered CLOSING and CLOSED in the enumeration.

homeassistant/components/mysensors/cover.py

@@ -1,4 +1,5 @@
 """Support for MySensors covers."""
+from enum import Enum, unique
 import logging
 from typing import Callable
 
@@ -14,6 +15,16 @@ from homeassistant.helpers.typing import HomeAssistantType
 _LOGGER = logging.getLogger(__name__)
 
 
+@unique
+class CoverState(Enum):
+    """An enumeration of the standard cover states."""
+
+    OPEN = 0
+    OPENING = 1
+    CLOSING = 2
+    CLOSED = 3
+
+
 async def async_setup_entry(
     hass: HomeAssistantType, config_entry: ConfigEntry, async_add_entities: Callable
 ):
@@ -43,13 +54,44 @@ async def async_setup_entry(
 class MySensorsCover(mysensors.device.MySensorsEntity, CoverEntity):
     """Representation of the value of a MySensors Cover child node."""
 
+    def get_cover_state(self):
+        """Return a CoverState enum representing the state of the cover."""
+        set_req = self.gateway.const.SetReq
+        v_up = self._values.get(set_req.V_UP) == STATE_ON
+        v_down = self._values.get(set_req.V_DOWN) == STATE_ON
+        v_stop = self._values.get(set_req.V_STOP) == STATE_ON
+
+        # If a V_DIMMER or V_PERCENTAGE is available, that is the amount
+        # the cover is open. Otherwise, use 0 or 100 based on the V_LIGHT
+        # or V_STATUS.
+        amount = 100
+        if set_req.V_DIMMER in self._values:
+            amount = self._values.get(set_req.V_DIMMER)
+        else:
+            amount = 100 if self._values.get(set_req.V_LIGHT) == STATE_ON else 0
+
+        if v_up and not v_down and not v_stop:
+            return CoverState.OPENING
+        if not v_up and v_down and not v_stop:
+            return CoverState.CLOSING
+        if not v_up and not v_down and v_stop and amount == 0:
+            return CoverState.CLOSED
+        return CoverState.OPEN
+
     @property
     def is_closed(self):
-        """Return True if cover is closed."""
-        set_req = self.gateway.const.SetReq
-        if set_req.V_DIMMER in self._values:
-            return self._values.get(set_req.V_DIMMER) == 0
-        return self._values.get(set_req.V_LIGHT) == STATE_OFF
+        """Return True if the cover is closed."""
+        return self.get_cover_state() == CoverState.CLOSED
+
+    @property
+    def is_closing(self):
+        """Return True if the cover is closing."""
+        return self.get_cover_state() == CoverState.CLOSING
+
+    @property
+    def is_opening(self):
+        """Return True if the cover is opening."""
+        return self.get_cover_state() == CoverState.OPENING
 
     @property
     def current_cover_position(self):

homeassistant/components/mysensors/device.py

@@ -162,6 +162,9 @@ class MySensorsDevice:
                 set_req.V_LIGHT,
                 set_req.V_LOCK_STATUS,
                 set_req.V_TRIPPED,
+                set_req.V_UP,
+                set_req.V_DOWN,
+                set_req.V_STOP,
             ):
                 self._values[value_type] = STATE_ON if int(value) == 1 else STATE_OFF
             elif value_type == set_req.V_DIMMER: