Fix for empty metadata bug

src/main/scala/plex/MediaContainer.scala

@@ -1,3 +1,3 @@
 package plex
 
-private[plex] case class MediaContainer(Metadata: List[TokenWatchlistItem], totalSize: Int)
+private[plex] case class MediaContainer(Metadata: List[TokenWatchlistItem] = List.empty, totalSize: Int)

src/test/resources/empty-watchlist-from-token.json

@@ -0,0 +1,10 @@
+{
+  "MediaContainer": {
+    "librarySectionID": "watchlist",
+    "librarySectionTitle": "Watchlist",
+    "offset": 300,
+    "totalSize": 16,
+    "identifier": "tv.plex.provider.discover",
+    "size": 0
+  }
+}

src/test/scala/plex/PlexUtilsSpec.scala

@@ -91,6 +91,24 @@ class PlexUtilsSpec extends AnyFlatSpec with Matchers with PlexUtils with MockFa
     result.head shouldBe Item("The Test", List("imdb://tt11347692", "tmdb://95837", "tvdb://372848"), "show")
   }
 
+
+  it should "successfully fetch an empty watchlist using the plex token" in {
+    val mockClient = mock[HttpClient]
+    val config = createConfiguration(Set("test-token"))
+    (mockClient.httpRequest _).expects(
+      Method.GET,
+      Uri.unsafeFromString("https://metadata.provider.plex.tv/library/sections/watchlist/all?X-Plex-Token=test-token&X-Plex-Container-Start=0&X-Plex-Container-Size=300"),
+      None,
+      None
+    ).returning(IO.pure(parse(Source.fromResource("empty-watchlist-from-token.json").getLines().mkString("\n")))).once()
+
+    val eitherResult = getSelfWatchlist(config, mockClient).value.unsafeRunSync()
+
+    eitherResult shouldBe a[Right[_, _]]
+    val result = eitherResult.getOrElse(Set.empty[Item])
+    result.size shouldBe 0
+  }
+
   it should "fetch the healthy part of a watchlist using the plex token" in {
     val mockClient = mock[HttpClient]
     val config = createConfiguration(Set("test-token"))