Create update component for System Bridge (#102966)

* Create update component for System Bridge

* Add

.coveragerc

@@ -1294,6 +1294,7 @@ omit =
     homeassistant/components/system_bridge/media_player.py
     homeassistant/components/system_bridge/notify.py
     homeassistant/components/system_bridge/sensor.py
+    homeassistant/components/system_bridge/update.py
     homeassistant/components/systemmonitor/sensor.py
     homeassistant/components/tado/__init__.py
     homeassistant/components/tado/binary_sensor.py

homeassistant/components/system_bridge/__init__.py

@@ -49,6 +49,7 @@ PLATFORMS = [
     Platform.MEDIA_PLAYER,
     Platform.NOTIFY,
     Platform.SENSOR,
+    Platform.UPDATE,
 ]
 
 CONF_BRIDGE = "bridge"

homeassistant/components/system_bridge/update.py

@@ -0,0 +1,65 @@
+"""Support for System Bridge updates."""
+from __future__ import annotations
+
+from homeassistant.components.update import UpdateEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_PORT
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from . import SystemBridgeEntity
+from .const import DOMAIN
+from .coordinator import SystemBridgeDataUpdateCoordinator
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up System Bridge update based on a config entry."""
+    coordinator: SystemBridgeDataUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]
+
+    async_add_entities(
+        [
+            SystemBridgeUpdateEntity(
+                coordinator,
+                entry.data[CONF_PORT],
+            ),
+        ]
+    )
+
+
+class SystemBridgeUpdateEntity(SystemBridgeEntity, UpdateEntity):
+    """Defines a System Bridge update entity."""
+
+    _attr_has_entity_name = True
+    _attr_title = "System Bridge"
+
+    def __init__(
+        self,
+        coordinator: SystemBridgeDataUpdateCoordinator,
+        api_port: int,
+    ) -> None:
+        """Initialize."""
+        super().__init__(
+            coordinator,
+            api_port,
+            "update",
+        )
+        self._attr_name = coordinator.data.system.hostname
+
+    @property
+    def installed_version(self) -> str | None:
+        """Version installed and in use."""
+        return self.coordinator.data.system.version
+
+    @property
+    def latest_version(self) -> str | None:
+        """Latest version available for install."""
+        return self.coordinator.data.system.version_latest
+
+    @property
+    def release_url(self) -> str | None:
+        """URL to the full release notes of the latest version available."""
+        return f"https://github.com/timmo001/system-bridge/releases/tag/{self.coordinator.data.system.version_latest}"