Add native ESPHome API cover (#19373)

* Add esphomelib native API cover

* Update

* 🚑 Lint

homeassistant/components/cover/esphome.py

@@ -0,0 +1,89 @@
+"""Support for ESPHome covers."""
+import logging
+
+from typing import TYPE_CHECKING, Optional
+
+from homeassistant.components.cover import CoverDevice, SUPPORT_CLOSE, \
+    SUPPORT_OPEN, SUPPORT_STOP
+from homeassistant.components.esphome import EsphomeEntity, \
+    platform_async_setup_entry
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import STATE_CLOSED, STATE_OPEN
+from homeassistant.helpers.typing import HomeAssistantType
+
+if TYPE_CHECKING:
+    # pylint: disable=unused-import
+    from aioesphomeapi import CoverInfo, CoverState  # noqa
+
+DEPENDENCIES = ['esphome']
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup_entry(hass: HomeAssistantType,
+                            entry: ConfigEntry, async_add_entities) -> None:
+    """Set up ESPHome covers based on a config entry."""
+    # pylint: disable=redefined-outer-name
+    from aioesphomeapi import CoverInfo, CoverState  # noqa
+
+    await platform_async_setup_entry(
+        hass, entry, async_add_entities,
+        component_key='cover',
+        info_type=CoverInfo, entity_type=EsphomeCover,
+        state_type=CoverState
+    )
+
+
+COVER_STATE_INT_TO_STR = {
+    0: STATE_OPEN,
+    1: STATE_CLOSED
+}
+
+
+class EsphomeCover(EsphomeEntity, CoverDevice):
+    """A cover implementation for ESPHome."""
+
+    @property
+    def _static_info(self) -> 'CoverInfo':
+        return super()._static_info
+
+    @property
+    def _state(self) -> Optional['CoverState']:
+        return super()._state
+
+    @property
+    def supported_features(self) -> int:
+        """Flag supported features."""
+        return SUPPORT_OPEN | SUPPORT_CLOSE | SUPPORT_STOP
+
+    @property
+    def assumed_state(self) -> bool:
+        """Return true if we do optimistic updates."""
+        return self._static_info.is_optimistic
+
+    @property
+    def is_closed(self) -> Optional[bool]:
+        """Return if the cover is closed or not."""
+        if self._state is None:
+            return None
+        return COVER_STATE_INT_TO_STR[self._state.state]
+
+    async def async_open_cover(self, **kwargs) -> None:
+        """Open the cover."""
+        from aioesphomeapi.client import COVER_COMMAND_OPEN
+
+        await self._client.cover_command(key=self._static_info.key,
+                                         command=COVER_COMMAND_OPEN)
+
+    async def async_close_cover(self, **kwargs) -> None:
+        """Close cover."""
+        from aioesphomeapi.client import COVER_COMMAND_CLOSE
+
+        await self._client.cover_command(key=self._static_info.key,
+                                         command=COVER_COMMAND_CLOSE)
+
+    async def async_stop_cover(self, **kwargs):
+        """Stop the cover."""
+        from aioesphomeapi.client import COVER_COMMAND_STOP
+
+        await self._client.cover_command(key=self._static_info.key,
+                                         command=COVER_COMMAND_STOP)

homeassistant/components/esphome/__init__.py

@@ -33,7 +33,8 @@ DISPATCHER_ON_STATE = 'esphome_{entry_id}_on_state'
 # The HA component types this integration supports
 HA_COMPONENTS = [
     'sensor',
-    'binary_sensor'
+    'binary_sensor',
+    'cover',
 ]
 
 _LOGGER = logging.getLogger(__name__)