If there is no season image, use series image

- Closes #243

Author: RadicalMuffinMan

app/src/main/java/org/jellyfin/androidtv/ui/itemdetail/v2/ItemDetailsFragment.kt

@@ -100,6 +100,7 @@ import org.jellyfin.androidtv.util.apiclient.getUrl
 import org.jellyfin.androidtv.util.apiclient.itemBackdropImages
 import org.jellyfin.androidtv.util.apiclient.itemImages
 import org.jellyfin.androidtv.util.apiclient.parentBackdropImages
+import org.jellyfin.androidtv.util.apiclient.seriesPrimaryImage
 import org.jellyfin.androidtv.util.sdk.compat.canResume
 import org.jellyfin.androidtv.util.sdk.TrailerUtils.getExternalTrailerIntent
 import org.jellyfin.androidtv.util.sdk.TrailerUtils.hasPlayableTrailers
@@ -1824,6 +1825,11 @@ class ItemDetailsFragment : Fragment() {
 				val primaryImage = item.itemImages[ImageType.PRIMARY]
 				(thumbImage ?: primaryImage)?.getUrl(viewModel.effectiveApi, maxWidth = 500)
 			}
+			item.type == BaseItemKind.SEASON -> {
+				val seasonImage = item.itemImages[ImageType.PRIMARY]
+				val fallback = seasonImage ?: item.seriesPrimaryImage
+				fallback?.getUrl(viewModel.effectiveApi, maxHeight = 600)
+			}
 			else -> {
 				item.itemImages[ImageType.PRIMARY]?.getUrl(viewModel.effectiveApi, maxHeight = 600)
 			}

app/src/main/java/org/jellyfin/androidtv/util/ImageHelper.kt

@@ -56,7 +56,7 @@ class ImageHelper(
 	): String? {
 		val image = when {
 			preferParentThumb && item.type == BaseItemKind.EPISODE -> item.parentImages[ImageType.THUMB] ?: item.seriesThumbImage
-			item.type == BaseItemKind.SEASON -> item.seriesPrimaryImage
+			item.type == BaseItemKind.SEASON -> item.itemImages[ImageType.PRIMARY] ?: item.seriesPrimaryImage
 			item.type == BaseItemKind.PROGRAM && item.imageTags?.containsKey(ImageType.THUMB) == true -> item.itemImages[ImageType.THUMB]
 			item.type == BaseItemKind.AUDIO -> item.albumPrimaryImage
 			else -> null