introducing timer toggle player bar (#212)

src/components/PlayerBar.tsx

@@ -3,12 +3,13 @@ import { createPortal } from 'react-dom';
 import {
   Play, Pause, SkipBack, SkipForward, Volume2, VolumeX, Music,
   Square, Repeat, Repeat1, Maximize2, SlidersVertical, X, Heart, Cast,
-  PictureInPicture2,
+  PictureInPicture2, ArrowLeftRight,
 } from 'lucide-react';
 import { invoke } from '@tauri-apps/api/core';
 import { usePlayerStore } from '../store/playerStore';
 import { useShallow } from 'zustand/react/shallow';
 import { useAuthStore } from '../store/authStore';
+import { useThemeStore } from '../store/themeStore';
 import { buildCoverArtUrl, coverArtCacheKey, star, unstar, setRating } from '../api/subsonic';
 import CachedImage from './CachedImage';
 import WaveformSeek from './WaveformSeek';
@@ -43,11 +44,28 @@ const PlaybackTime = memo(function PlaybackTime({ className }: { className?: str
   return <span className={className} ref={spanRef} />;
 });
 
+// Renders the remaining time (duration - currentTime) without causing PlayerBar to re-render.
+const RemainingTime = memo(function RemainingTime({ duration, className }: { duration: number; className?: string }) {
+  const spanRef = useRef<HTMLSpanElement>(null);
+  useEffect(() => {
+    const updateRemaining = () => {
+      if (spanRef.current) {
+        const remaining = Math.max(0, duration - usePlayerStore.getState().currentTime);
+        spanRef.current.textContent = `-${formatTime(remaining)}`;
+      }
+    };
+    updateRemaining();
+    return usePlayerStore.subscribe(updateRemaining);
+  }, [duration]);
+  return <span className={className} ref={spanRef} />;
+});
+
 export default function PlayerBar() {
   const { t } = useTranslation();
   const navigate = useNavigate();
   const [eqOpen, setEqOpen] = useState(false);
   const [showVolPct, setShowVolPct] = useState(false);
+  const [localShowRemaining, setLocalShowRemaining] = useState(() => useThemeStore.getState().showRemainingTime);
   const premuteVolumeRef = useRef(1);
   const showLyrics   = useLyricsStore(s => s.showLyrics);
   const activeTab    = useLyricsStore(s => s.activeTab);
@@ -297,7 +315,18 @@ export default function PlayerBar() {
             <div className="player-waveform-wrap">
               <WaveformSeek trackId={currentTrack?.id} />
             </div>
-            <span className="player-time">{formatTime(duration)}</span>
+            <span
+              className="player-time player-time-toggle"
+              onClick={() => {
+                const newVal = !localShowRemaining;
+                setLocalShowRemaining(newVal);
+                useThemeStore.getState().setShowRemainingTime(newVal);
+              }}
+              title={localShowRemaining ? t('player.showDuration') : t('player.showRemainingTime')}
+            >
+              {localShowRemaining ? <RemainingTime duration={duration} /> : formatTime(duration)}
+              <ArrowLeftRight size={10} style={{ marginLeft: 4, opacity: 0.6 }} />
+            </span>
           </>
         )}
       </div>

src/locales/de.ts

@@ -985,6 +985,8 @@ export const deTranslation = {
     lyricsSourceLrclib: 'Quelle: LRCLIB',
     lyricsSourceNetease: 'Quelle: Netease',
     lyricsSourceLyricsplus: 'Quelle: YouLyPlus',
+    showDuration: 'Dauer anzeigen',
+    showRemainingTime: 'Verbleibende Zeit anzeigen',
   },
   songInfo: {
     title: 'Song-Infos',

src/locales/en.ts

@@ -987,6 +987,8 @@ export const enTranslation = {
     lyricsSourceLrclib: 'Source: LRCLIB',
     lyricsSourceNetease: 'Source: Netease',
     lyricsSourceLyricsplus: 'Source: YouLyPlus',
+    showDuration: 'Show duration',
+    showRemainingTime: 'Show remaining time',
   },
   songInfo: {
     title: 'Song Info',

src/locales/es.ts

@@ -978,6 +978,8 @@ export const esTranslation = {
     lyricsSourceLrclib: 'Fuente: LRCLIB',
     lyricsSourceNetease: 'Fuente: Netease',
     lyricsSourceLyricsplus: 'Fuente: YouLyPlus',
+    showDuration: 'Mostrar duración',
+    showRemainingTime: 'Mostrar tiempo restante',
   },
   songInfo: {
     title: 'Información de Canción',

src/locales/fr.ts

@@ -973,6 +973,8 @@ export const frTranslation = {
     lyricsSourceLrclib: 'Source : LRCLIB',
     lyricsSourceNetease: 'Source : Netease',
     lyricsSourceLyricsplus: 'Source : YouLyPlus',
+    showDuration: 'Afficher la durée',
+    showRemainingTime: 'Afficher le temps restant',
   },
   songInfo: {
     title: 'Infos du morceau',

src/locales/nb.ts

@@ -972,6 +972,8 @@ export const nbTranslation = {
     lyricsSourceLrclib: 'Kilde: LRCLIB',
     lyricsSourceNetease: 'Kilde: Netease',
     lyricsSourceLyricsplus: 'Kilde: YouLyPlus',
+    showDuration: 'Vis varighet',
+    showRemainingTime: 'Vis gjenværende tid',
   },
   songInfo: {
     title: 'Sanginfo',

src/locales/nl.ts

@@ -972,6 +972,8 @@ export const nlTranslation = {
     lyricsSourceLrclib: 'Bron: LRCLIB',
     lyricsSourceNetease: 'Bron: Netease',
     lyricsSourceLyricsplus: 'Bron: YouLyPlus',
+    showDuration: 'Toon duur',
+    showRemainingTime: 'Toon resterende tijd',
   },
   songInfo: {
     title: 'Nummerinfo',

src/locales/ru.ts

@@ -1033,6 +1033,8 @@ export const ruTranslation = {
     lyricsNotFound: 'Текст не найден',
     lyricsSourceNetease: 'Источник: Netease',
     lyricsSourceLyricsplus: 'Источник: YouLyPlus',
+    showDuration: 'Показать длительность',
+    showRemainingTime: 'Показать оставшееся время',
   },
   songInfo: {
     title: 'О треке',

src/locales/zh.ts

@@ -968,6 +968,8 @@ export const zhTranslation = {
     lyricsSourceLrclib: '来源：LRCLIB',
     lyricsSourceNetease: '来源：网易云',
     lyricsSourceLyricsplus: '来源：YouLyPlus',
+    showDuration: '显示时长',
+    showRemainingTime: '显示剩余时间',
   },
   songInfo: {
     title: '歌曲信息',

src/store/themeStore.ts

@@ -22,6 +22,8 @@ interface ThemeState {
   setEnablePlaylistCoverPhoto: (v: boolean) => void;
   showBitrate: boolean;
   setShowBitrate: (v: boolean) => void;
+  showRemainingTime: boolean;
+  setShowRemainingTime: (v: boolean) => void;
 }
 
 export function getScheduledTheme(state: Pick<ThemeState, 'enableThemeScheduler' | 'theme' | 'themeDay' | 'themeNight' | 'timeDayStart' | 'timeNightStart'>): string {
@@ -59,6 +61,8 @@ export const useThemeStore = create<ThemeState>()(
       setEnablePlaylistCoverPhoto: (v) => set({ enablePlaylistCoverPhoto: v }),
       showBitrate: true,
       setShowBitrate: (v) => set({ showBitrate: v }),
+      showRemainingTime: false,
+      setShowRemainingTime: (v) => set({ showRemainingTime: v }),
     }),
     {
       name: 'psysonic_theme',

src/styles/layout.css

@@ -1353,6 +1353,25 @@
   text-align: left;
 }
 
+/* Clickable time toggle with swap indicator */
+.player-time-toggle {
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  padding: 2px 4px;
+  border-radius: 4px;
+  transition: background-color 0.15s, color 0.15s;
+}
+
+.player-time-toggle:hover {
+  background-color: var(--surface-hover, rgba(128, 128, 128, 0.2));
+  color: var(--text-primary);
+}
+
+.player-time-toggle:active {
+  background-color: var(--surface-active, rgba(128, 128, 128, 0.3));
+}
+
 /* Volume section */
 .player-volume-section {
   display: flex;