src/AnimeClient/API/Kitsu/GraphQL/Mutations/UpdateLibraryItem.graphql

@@ -0,0 +1,32 @@
+mutation(
+	$id: ID!,
+	$notes: String,
+	$private: Boolean,
+	$progress: Int,
+	$ratingTwenty: Int,
+	$reconsumeCount: Int!,
+	$reconsuming: Boolean,
+	$status: LibraryEntryStatus!,
+) {
+	updateLibraryEntry(input: {
+		id: $id,
+		notes: $notes
+		private: $private
+		progress: $progress
+		rating: $ratingTwenty
+		reconsumeCount: $reconsumeCount
+		reconsuming: $reconsuming
+		status: $status
+	}) {
+		libraryEntry {
+			id
+			notes
+			private
+			progress
+			rating
+			reconsumeCount
+			reconsuming
+			status
+		}
+	}
+}

src/AnimeClient/API/Kitsu/ListItem.php

@@ -151,29 +151,16 @@ final class ListItem extends AbstractListItem {
 	 */
 	public function update(string $id, FormItemData $data): Request
 	{
-		$authHeader = $this->getAuthHeader();
-		$requestData = [
-			'data' => [
-				'id' => $id,
-				'type' => 'libraryEntries',
-				'attributes' => $data
-			]
-		];
-
-		if (((int) $data->progress) === 0)
-		{
-			$data->progress = 0;
-		}
-
-		$request = $this->requestBuilder->newRequest('PATCH', "library-entries/{$id}")
-			->setJsonBody($requestData);
-
-		if ($authHeader !== NULL)
-		{
-			$request = $request->setHeader('Authorization', $authHeader);
-		}
-
-		return $request->getFullRequest();
+		return $this->requestBuilder->mutateRequest('UpdateLibraryItem', [
+			'id' => $id,
+			'notes' => $data['notes'],
+			'private' => (bool)$data['private'],
+			'progress' => (int)$data['progress'],
+			'ratingTwenty' => (int)$data['ratingTwenty'],
+			'reconsumeCount' => (int)$data['reconsumeCount'],
+			'reconsuming' => (bool)$data['reconsuming'],
+			'status' => strtoupper($data['status']),
+		]);
 	}
 
 	/**

src/AnimeClient/Model/Anime.php

@@ -255,7 +255,7 @@ class Anime extends API {
 		$results = $requester->makeRequests();
 
 		$body = Json::decode($results['kitsu']);
-		$statusCode = array_key_exists('error', $body) ? 400: 200;
+		$statusCode = array_key_exists('errors', $body) ? 400: 200;
 
 		return [
 			'body' => Json::decode($results['kitsu']),

src/AnimeClient/Model/Manga.php

@@ -171,7 +171,7 @@ class Manga extends API {
 
 		$results = $requester->makeRequests();
 		$body = Json::decode($results['kitsu']);
-		$statusCode = array_key_exists('error', $body) ? 400: 200;
+		$statusCode = array_key_exists('errors', $body) ? 400: 200;
 
 		return [
 			'body' => Json::decode($results['kitsu']),