Return Partial Manga Data with Errors (#2166)

* Return Partial Manga Data with Errors

* Lint

* Optimize imports

* Update server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MangaMutation.kt

Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>

* Update server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MangaMutation.kt

Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>

---------

Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>

CHANGELOG.md

@@ -10,7 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 - .
 
 ### Changed
-- .
+- (**Manga/API**) Return partial responses for Manga And Chapters query
 
 ### Fixed
 - .

server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MangaMutation.kt

@@ -3,6 +3,8 @@
 package suwayomi.tachidesk.graphql.mutations
 
 import com.expediagroup.graphql.generator.annotations.GraphQLDeprecated
+import com.expediagroup.graphql.server.extensions.toGraphQLError
+import graphql.execution.DataFetcherResult
 import org.jetbrains.exposed.v1.core.LikePattern
 import org.jetbrains.exposed.v1.core.Op
 import org.jetbrains.exposed.v1.core.and
@@ -181,15 +183,21 @@ class MangaMutation {
     )
 
     @RequireAuth
-    fun fetchMangaAndChapters(input: FetchMangaAndChaptersInput): CompletableFuture<FetchMangaAndChaptersPayload?> {
+    fun fetchMangaAndChapters(input: FetchMangaAndChaptersInput): CompletableFuture<DataFetcherResult<FetchMangaAndChaptersPayload?>> {
         val (clientMutationId, id, fetchManga, fetchChapters) = input
 
         return future {
+            val error =
+                try {
                     Manga.updateMangaAndChapters(
                         mangaId = id,
                         updateManga = fetchManga,
                         updateChapters = fetchChapters,
                     )
+                    null
+                } catch (e: Exception) {
+                    e
+                }
 
             val (manga, chapters) =
                 transaction {
@@ -202,11 +210,20 @@ class MangaMutation {
                             .map { ChapterType(it) },
                     )
                 }
+            @Suppress("UNCHECKED_CAST")
+            DataFetcherResult
+                .newResult<FetchMangaAndChaptersPayload>()
+                .data(
                     FetchMangaAndChaptersPayload(
                         clientMutationId = clientMutationId,
                         manga = MangaType(manga),
                         chapters = chapters,
-            )
+                    ),
+                ).also {
+                    if (error != null) {
+                        it.error(error.toGraphQLError())
+                    }
+                }.build() as DataFetcherResult<FetchMangaAndChaptersPayload?>
         }
     }