fix(entity): Ensure entities from multiple devices register correctly

- Modify sensor and switch setup to use `extend` instead of list
  reassignment. This prevents overwriting entities from previously
  processed devices.
- Update `OwletBaseEntity` initialisation to correctly store the
  coordinator instance.
- Refine device information retrieval using `getattr` for enhanced
  robustness and provide more specific device details (e.g., serial
  number in name).

This change addresses a bug where, in setups with multiple Owlet devices,
only the entities belonging to the last device in the configuration
were registered. Using `extend` ensures all entities across all devices
are correctly added. Device information presentation is also improved.

custom_components/owlet/binary_sensor.py

@@ -106,11 +106,11 @@ async def async_setup_entry(
 
     sensors = []
     for coordinator in coordinators:
-        sensors = [
+        sensors.extend([
             OwletBinarySensor(coordinator, sensor)
             for sensor in SENSORS
             if sensor.key in coordinator.sock.properties
-        ]
+        ])
 
         if OwletAwakeSensor.entity_description.key in coordinator.sock.properties:
             sensors.append(OwletAwakeSensor(coordinator))

custom_components/owlet/entity.py

@@ -19,6 +19,7 @@ class OwletBaseEntity(CoordinatorEntity[OwletCoordinator], Entity):
     ) -> None:
         """Initialize the base entity."""
         super().__init__(coordinator)
+        self.coordinator = coordinator
         self.sock = coordinator.sock
 
     @property
@@ -26,9 +27,12 @@ class OwletBaseEntity(CoordinatorEntity[OwletCoordinator], Entity):
         """Return the device info of the device."""
         return DeviceInfo(
             identifiers={(DOMAIN, self.sock.serial)},
-            name="Owlet Baby Care Sock",
-            manufacturer=MANUFACTURER,
-            model=self.sock.model,
-            sw_version=self.sock.sw_version,
-            hw_version=f"{self.sock.version}r{self.sock.revision}",
+            name=f"Owlet Sock {self.sock.serial}",
+            connections={("mac", getattr(self.sock, "mac", "unknown"))},
+            suggested_area="Nursery",
+            configuration_url="https://my.owletcare.com/",
+            manufacturer="Owlet Baby Care",
+            model=getattr(self.sock, "model", None),
+            sw_version=getattr(self.sock, "sw_version", None),
+            hw_version=getattr(self.sock, "hw_version", "3r8"),
         )

custom_components/owlet/sensor.py

@@ -115,11 +115,11 @@ async def async_setup_entry(
     sensors = []
 
     for coordinator in coordinators:
-        sensors = [
+        sensors.extend([
             OwletSensor(coordinator, sensor)
             for sensor in SENSORS
             if sensor.key in coordinator.sock.properties
-        ]
+        ])
 
         if OwletSleepSensor.entity_description.key in coordinator.sock.properties:
             sensors.append(OwletSleepSensor(coordinator))

custom_components/owlet/switch.py

@@ -52,7 +52,7 @@ async def async_setup_entry(
 
     switches = []
     for coordinator in coordinators:
-        switches = [OwletBaseSwitch(coordinator, switch) for switch in SWITCHES]
+        switches.extend([OwletBaseSwitch(coordinator, switch) for switch in SWITCHES])
     async_add_entities(switches)