Fix Lyric Translation Not Resetting (#1208)

* Refactor lyrics translation and index handling

* Add auto translation toggle to lyric settings

* Add enableAutoTranslation setting to lyrics

src/i18n/locales/en.json

@@ -507,7 +507,6 @@
         "artistBackgroundBlur_description": "adjusts the amount of blur applied to the artist background image",
         "artistConfiguration": "album artist page configuration",
         "artistConfiguration_description": "configure what items are shown, and in what order, on the album artist page",
-        "artistConfiguration": "album artist page configuration",
         "audioDevice_description": "select the audio device to use for playback (web player only)",
         "audioDevice": "audio device",
         "audioExclusiveMode_description": "enable exclusive output mode. In this mode, the system is usually locked out, and only mpv will be able to output audio",
@@ -560,9 +559,10 @@
         "discordServeImage_description": "share cover art for {{discord}} rich presence from server itself, only available for Jellyfin and Navidrome. {{discord}} uses a bot to fetch images, so your server must be reachable from the public internet",
         "discordUpdateInterval": "{{discord}} rich presence update interval",
         "discordUpdateInterval_description": "the time in seconds between each update (minimum 15 seconds)",
-        "discordUpdateInterval": "{{discord}} rich presence update interval",
         "doubleClickBehavior_description": "if true, all matching tracks in a track search will be queued. otherwise, only the clicked one will be queued",
         "doubleClickBehavior": "queue all searched tracks when double clicking",
+        "enableAutoTranslation_description": "enable translation automatically when lyrics are loaded",
+        "enableAutoTranslation": "enable auto translation",
         "enableRemote_description": "enables the remote control server to allow other devices to control the application",
         "enableRemote": "enable remote control server",
         "exitToTray_description": "exit the application to the system tray",

src/renderer/features/lyrics/lyrics.tsx

@@ -32,8 +32,12 @@ import { FullLyricsMetadata, LyricSource, LyricsOverride } from '/@/shared/types
 
 export const Lyrics = () => {
     const currentSong = useCurrentSong();
-    const { translationApiKey, translationApiProvider, translationTargetLanguage } =
-        useLyricsSettings();
+    const {
+        enableAutoTranslation,
+        translationApiKey,
+        translationApiProvider,
+        translationTargetLanguage,
+    } = useLyricsSettings();
     const { t } = useTranslation();
     const [index, setIndex] = useState(0);
     const [translatedLyrics, setTranslatedLyrics] = useState<null | string>(null);
@@ -52,7 +56,7 @@ export const Lyrics = () => {
     const [lyrics, synced] = useMemo(() => {
         if (Array.isArray(data)) {
             if (data.length > 0) {
-                const selectedLyric = data[Math.min(index, data.length)];
+                const selectedLyric = data[Math.min(index, data.length - 1)];
                 return [selectedLyric, selectedLyric.synced];
             }
         } else if (data?.lyrics) {
@@ -89,11 +93,7 @@ export const Lyrics = () => {
         );
     }, [currentSong?.id, currentSong?.serverId]);
 
-    const handleOnTranslateLyric = useCallback(async () => {
-        if (translatedLyrics) {
-            setShowTranslation(!showTranslation);
-            return;
-        }
+    const fetchTranslation = useCallback(async () => {
         if (!lyrics) return;
         const originalLyrics = Array.isArray(lyrics.lyrics)
             ? lyrics.lyrics.map(([, line]) => line).join('\n')
@@ -106,14 +106,15 @@ export const Lyrics = () => {
         );
         setTranslatedLyrics(TranslatedText);
         setShowTranslation(true);
-    }, [
-        translatedLyrics,
-        lyrics,
-        translationApiKey,
-        translationApiProvider,
-        translationTargetLanguage,
-        showTranslation,
-    ]);
+    }, [lyrics, translationApiKey, translationApiProvider, translationTargetLanguage]);
+
+    const handleOnTranslateLyric = useCallback(async () => {
+        if (translatedLyrics) {
+            setShowTranslation(!showTranslation);
+            return;
+        }
+        await fetchTranslation();
+    }, [translatedLyrics, showTranslation, fetchTranslation]);
 
     const { isInitialLoading: isOverrideLoading } = useSongLyricsByRemoteId({
         options: {
@@ -133,6 +134,8 @@ export const Lyrics = () => {
             () => {
                 setOverride(undefined);
                 setIndex(0);
+                setShowTranslation(false);
+                setTranslatedLyrics(null);
             },
             { equalityFn: (a, b) => a?.id === b?.id },
         );
@@ -142,6 +145,12 @@ export const Lyrics = () => {
         };
     }, []);
 
+    useEffect(() => {
+        if (lyrics && !translatedLyrics && enableAutoTranslation) {
+            fetchTranslation();
+        }
+    }, [lyrics, translatedLyrics, enableAutoTranslation, fetchTranslation]);
+
     const languages = useMemo(() => {
         if (Array.isArray(data)) {
             return data.map((lyric, idx) => ({ label: lyric.lang, value: idx.toString() }));

src/renderer/features/settings/components/playback/lyric-settings.tsx

@@ -214,6 +214,28 @@ export const LyricSettings = () => {
             isHidden: !isElectron(),
             title: t('setting.translationApiKey', { postProcess: 'sentenceCase' }),
         },
+        {
+            control: (
+                <Switch
+                    aria-label="Enable auto translation"
+                    defaultChecked={settings.enableAutoTranslation}
+                    onChange={(e) => {
+                        setSettings({
+                            lyrics: {
+                                ...settings,
+                                enableAutoTranslation: e.currentTarget.checked,
+                            },
+                        });
+                    }}
+                />
+            ),
+            description: t('setting.enableAutoTranslation', {
+                context: 'description',
+                postProcess: 'sentenceCase',
+            }),
+            isHidden: !isElectron(),
+            title: t('setting.enableAutoTranslation', { postProcess: 'sentenceCase' }),
+        },
     ];
 
     return <SettingsSection divider={false} options={lyricOptions} />;

src/renderer/store/settings.store.ts

@@ -225,6 +225,7 @@ const HotkeysSettingsSchema = z.object({
 const LyricsSettingsSchema = z.object({
     alignment: z.enum(['center', 'left', 'right']),
     delayMs: z.number(),
+    enableAutoTranslation: z.boolean(),
     enableNeteaseTranslation: z.boolean(),
     fetch: z.boolean(),
     follow: z.boolean(),
@@ -612,6 +613,7 @@ const initialState: SettingsState = {
     lyrics: {
         alignment: 'center',
         delayMs: 0,
+        enableAutoTranslation: false,
         enableNeteaseTranslation: false,
         fetch: false,
         follow: true,