Add support for Velux light devices (#49338)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

homeassistant/components/velux/light.py

@@ -0,0 +1,56 @@
+"""Support for Velux lights."""
+from pyvlx import Intensity, LighteningDevice
+from pyvlx.node import Node
+
+from homeassistant.components.light import (
+    ATTR_BRIGHTNESS,
+    COLOR_MODE_BRIGHTNESS,
+    LightEntity,
+)
+
+from . import DATA_VELUX, VeluxEntity
+
+
+async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
+    """Set up light(s) for Velux platform."""
+    async_add_entities(
+        VeluxLight(node)
+        for node in hass.data[DATA_VELUX].pyvlx.nodes
+        if isinstance(node, LighteningDevice)
+    )
+
+
+class VeluxLight(VeluxEntity, LightEntity):
+    """Representation of a Velux light."""
+
+    def __init__(self, node: Node) -> None:
+        """Initialize the Velux light."""
+        super().__init__(node)
+
+        self._attr_supported_color_modes = {COLOR_MODE_BRIGHTNESS}
+        self._attr_color_mode = COLOR_MODE_BRIGHTNESS
+
+    @property
+    def brightness(self):
+        """Return the current brightness."""
+        return int((100 - self.node.intensity.intensity_percent) * 255 / 100)
+
+    @property
+    def is_on(self):
+        """Return true if light is on."""
+        return not self.node.intensity.off and self.node.intensity.known
+
+    async def async_turn_on(self, **kwargs):
+        """Instruct the light to turn on."""
+        if ATTR_BRIGHTNESS in kwargs:
+            intensity_percent = int(100 - kwargs[ATTR_BRIGHTNESS] / 255 * 100)
+            await self.node.set_intensity(
+                Intensity(intensity_percent=intensity_percent),
+                wait_for_completion=True,
+            )
+        else:
+            await self.node.turn_on(wait_for_completion=True)
+
+    async def async_turn_off(self, **kwargs):
+        """Instruct the light to turn off."""
+        await self.node.turn_off(wait_for_completion=True)