Add "auto webtoon mode" option to reader

src/modules/reader/utils/ReaderSettings.utils.tsx

@@ -6,7 +6,14 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/.
  */
 
-import { IReaderSettings, ReaderPageScaleMode, ReadingMode } from '@/modules/reader/types/Reader.types.ts';
+import {
+    IReaderSettings,
+    IReaderSettingsWithDefaultFlag,
+    ReaderPageScaleMode,
+    ReadingMode,
+} from '@/modules/reader/types/Reader.types.ts';
+import { MangaGenreInfo, MangaSourceNameInfo } from '@/modules/manga/Manga.types.ts';
+import { Mangas } from '@/modules/manga/services/Mangas.ts';
 
 export const isOffsetDoubleSpreadPagesEditable = (readingMode: IReaderSettings['readingMode']): boolean =>
     readingMode === ReadingMode.DOUBLE_PAGE;
@@ -19,3 +26,9 @@ export const isContinuousReadingMode = (readingMode: IReaderSettings['readingMod
 
 export const isContinuousVerticalReadingMode = (readingMode: IReaderSettings['readingMode']): boolean =>
     [ReadingMode.CONTINUOUS_VERTICAL, ReadingMode.WEBTOON].includes(readingMode);
+
+export const isAutoWebtoonMode = (
+    manga: MangaGenreInfo & MangaSourceNameInfo,
+    shouldUseAutoWebtoonMode: IReaderSettings['shouldUseAutoWebtoonMode'],
+    readingMode: IReaderSettingsWithDefaultFlag['readingMode'],
+): boolean => shouldUseAutoWebtoonMode && readingMode.isDefault && Mangas.isLongStripType(manga);