Add latest added media as Plex library sensor attribute (#56235)

homeassistant/components/plex/sensor.py

@@ -16,6 +16,7 @@ from .const import (
     PLEX_UPDATE_SENSOR_SIGNAL,
     SERVERS,
 )
+from .helpers import pretty_title
 
 LIBRARY_ATTRIBUTE_TYPES = {
     "artist": ["artist", "album"],
@@ -28,6 +29,11 @@ LIBRARY_PRIMARY_LIBTYPE = {
     "artist": "track",
 }
 
+LIBRARY_RECENT_LIBTYPE = {
+    "show": "episode",
+    "artist": "album",
+}
+
 LIBRARY_ICON_LOOKUP = {
     "artist": "mdi:music",
     "movie": "mdi:movie",
@@ -174,6 +180,17 @@ class PlexLibrarySectionSensor(SensorEntity):
                 libtype=libtype, includeCollections=False
             )
 
+        recent_libtype = LIBRARY_RECENT_LIBTYPE.get(
+            self.library_type, self.library_type
+        )
+        recently_added = self.library_section.recentlyAdded(
+            maxresults=1, libtype=recent_libtype
+        )
+        if recently_added:
+            media = recently_added[0]
+            self._attr_extra_state_attributes["last_added_item"] = pretty_title(media)
+            self._attr_extra_state_attributes["last_added_timestamp"] = media.addedAt
+
     @property
     def device_info(self):
         """Return a device description for device registry."""