Add service mode set-list view with screen wake lock

frontend/app.js

@@ -1384,6 +1384,7 @@ const Player = {
     updateNowPlayingActions();
     markPlayingCard();
     showMiniBar();
+    updateServiceMode();
     // Media Session API — OS media keys + lock screen
     if ('mediaSession' in navigator) {
       navigator.mediaSession.metadata = new MediaMetadata({
@@ -1711,10 +1712,19 @@ const Player = {
 // faster than the 1s watchdog interval, which matters for a jarring "audio
 // paused, video kept playing" UX.
 document.addEventListener('visibilitychange', () => {
-  if (document.visibilityState === 'visible') Player.resumeIfNeeded();
+  if (document.visibilityState === 'visible') {
+    Player.resumeIfNeeded();
+    if (isServiceModeOpen()) acquireWakeLock();
+  }
+});
+window.addEventListener('pageshow', () => {
+  Player.resumeIfNeeded();
+  if (isServiceModeOpen()) acquireWakeLock();
+});
+window.addEventListener('focus', () => {
+  Player.resumeIfNeeded();
+  if (isServiceModeOpen()) acquireWakeLock();
 });
-window.addEventListener('pageshow', () => Player.resumeIfNeeded());
-window.addEventListener('focus', () => Player.resumeIfNeeded());
 
 function showSpinner(on) {
   els.spinner.classList.toggle('hidden', !on);
@@ -1839,6 +1849,8 @@ function wirePlayerEvents() {
 function updatePlayBtn() {
   els.playBtn.textContent = Player.master.paused ? '▶' : '⏸';
   $('miniPlayBtn').textContent = Player.master.paused ? '▶' : '⏸';
+  const spBtn = $('servicePlayBtn');
+  if (spBtn) spBtn.textContent = Player.master.paused ? '▶' : '⏸';
 }
 // Reflect cache state on the now-playing Save button.
 function updateNowPlayingActions() {
@@ -1878,6 +1890,7 @@ function updateProgress() {
   els.durTime.textContent = fmtTime(dur);
   if (dur) els.seek.value = String((cur / dur) * 1000);
   updateMiniBar();
+  updateServiceProgress(cur, dur);
   // A-B loop: passing B behaves like the track ending. Loop the A-B segment only
   // when "loop current" is on; otherwise B is the effective end of the track and
   // we advance per the repeat settings (next track, or wrap when "repeat list").
@@ -2029,6 +2042,7 @@ function playQueue(index = 0) {
 }
 
 function renderUpNext() {
+  updateServiceUpNext();
   const upcoming = queue.slice(queueIndex + 1);
   if (!upcoming.length) { $('upnext').classList.add('hidden'); return; }
   $('upnext').classList.remove('hidden');
@@ -2113,6 +2127,131 @@ function playPrev() {
   }
 }
 
+// ============================================================================
+// Service mode (set-list view) with screen wake lock
+// ============================================================================
+let serviceWakeLock = null;
+
+function isServiceModeOpen() {
+  const el = $('serviceMode');
+  return !!(el && !el.classList.contains('hidden'));
+}
+
+async function acquireWakeLock() {
+  if (!isServiceModeOpen()) return;
+  if (!('wakeLock' in navigator) || typeof navigator.wakeLock.request !== 'function') {
+    serviceWakeLock = null;
+    updateWakeStateUI();
+    return;
+  }
+  try {
+    if (serviceWakeLock && !serviceWakeLock.released) {
+      try { await serviceWakeLock.release(); } catch {}
+    }
+    const lock = await navigator.wakeLock.request('screen');
+    serviceWakeLock = lock;
+    lock.addEventListener('release', () => {
+      if (serviceWakeLock === lock) {
+        serviceWakeLock = null;
+        updateWakeStateUI();
+      }
+    });
+  } catch {
+    serviceWakeLock = null;
+  }
+  updateWakeStateUI();
+}
+
+async function releaseWakeLock() {
+  if (serviceWakeLock) {
+    try {
+      if (!serviceWakeLock.released) {
+        await serviceWakeLock.release();
+      }
+    } catch {}
+    serviceWakeLock = null;
+  }
+  updateWakeStateUI();
+}
+
+function updateWakeStateUI() {
+  const el = $('serviceWakeState');
+  if (!el) return;
+  const isAwake = !!(serviceWakeLock && !serviceWakeLock.released);
+  el.textContent = isAwake ? 'Screen will stay awake' : 'Screen may sleep';
+  el.classList.toggle('awake', isAwake);
+}
+
+function updateServiceUpNext() {
+  const upNextEl = $('serviceUpNext');
+  if (!upNextEl) return;
+  const upcoming = (queue && queueIndex >= 0) ? queue.slice(queueIndex + 1) : [];
+  if (upcoming.length > 0) {
+    upNextEl.textContent = 'Up next: ' + (upcoming[0].title || 'Untitled');
+  } else {
+    upNextEl.textContent = 'Last song';
+  }
+}
+
+function updateServiceProgress(cur, dur) {
+  const curEl = $('serviceCurTime');
+  const durEl = $('serviceDurTime');
+  if (curEl) curEl.textContent = fmtTime(cur || 0);
+  if (durEl) durEl.textContent = fmtTime(dur || 0);
+}
+
+function updateServiceMode() {
+  if (!isServiceModeOpen()) return;
+  const meta = current ? current.meta : null;
+  const titleEl = $('serviceTitle');
+  const chanEl = $('serviceChannel');
+  if (titleEl) titleEl.textContent = meta ? (meta.title || '') : 'No track playing';
+  if (chanEl) chanEl.textContent = meta ? (meta.channel || '') : '';
+
+  // Current track note (Section 5): read entry.notes, degrade gracefully if absent
+  const currentEntry = (queue && queueIndex >= 0 && queueIndex < queue.length) ? queue[queueIndex] : meta;
+  const note = (currentEntry && currentEntry.notes) ? String(currentEntry.notes).trim() : '';
+  const noteEl = $('serviceNote');
+  if (noteEl) {
+    if (note) {
+      noteEl.textContent = note;
+      noteEl.classList.remove('hidden');
+    } else {
+      noteEl.textContent = '';
+      noteEl.classList.add('hidden');
+    }
+  }
+
+  updateServiceUpNext();
+
+  const cur = Player.master ? (Player.master.currentTime || 0) : 0;
+  const dur = Player.master ? (Player.master.duration || (meta ? meta.duration : 0) || 0) : 0;
+  updateServiceProgress(cur, dur);
+
+  const spBtn = $('servicePlayBtn');
+  if (spBtn && Player.master) {
+    spBtn.textContent = Player.master.paused ? '▶' : '⏸';
+  }
+
+  updateWakeStateUI();
+}
+
+function enterServiceMode(pl) {
+  if (pl && pl.videos && pl.videos.length) {
+    playFromList(pl.videos, 0, 'playlist:' + pl.id);
+  }
+  const el = $('serviceMode');
+  if (el) el.classList.remove('hidden');
+  updateServiceMode();
+  acquireWakeLock();
+}
+
+function exitServiceMode() {
+  const el = $('serviceMode');
+  if (el) el.classList.add('hidden');
+  releaseWakeLock();
+}
+
 // ============================================================================
 // Channel view — list a channel's uploads with quick actions
 // ============================================================================
@@ -2375,6 +2514,13 @@ function renderList() {
         playFromList(pl.videos, 0, 'playlist:' + pl.id, { playFull: true });
         toast('Playing in full — stops after the last video');
       };
+      const serviceBtn = document.createElement('button');
+      serviceBtn.textContent = '🎤 Service mode';
+      serviceBtn.title = 'Set-list view with screen wake lock';
+      serviceBtn.onclick = () => {
+        if (!pl.videos || !pl.videos.length) { toast('Playlist is empty'); return; }
+        enterServiceMode(pl);
+      };
       const queueAll = document.createElement('button');
       queueAll.textContent = '＋ Queue';
       queueAll.onclick = () => { pl.videos.forEach((v) => addToQueue(v, { quiet: true })); toast('Added playlist to queue'); };
@@ -2398,7 +2544,7 @@ function renderList() {
       pinBtn.title = isPinned ? 'Pinned for offline keep — click to unpin' : 'Pin to keep all videos in this playlist available offline';
       pinBtn.onclick = () => togglePinPlaylist(pl);
 
-      const buttons = [playAll, playFull, queueAll, offlineBtn, pinBtn];
+      const buttons = [playAll, playFull, serviceBtn, queueAll, offlineBtn, pinBtn];
       if (pl.videos && pl.videos.length >= 1) {
         const share = document.createElement('button');
         share.textContent = '🔗 Share';
@@ -4136,15 +4282,24 @@ document.querySelectorAll('.chip').forEach((c) => {
     else if (e.key === 'b') { if (current) setAbB(); }
     else if (e.key === '?') toggleShortcutHelp();
     else if (e.key === 'Escape') {
-      const app = document.querySelector('.app');
+      if (isServiceModeOpen()) exitServiceMode();
-      if (app && app.classList.contains('sidebar-open')) closeSidebar();
+      else {
-      else if (!$('shortcutHelp').classList.contains('hidden')) $('shortcutHelp').classList.add('hidden');
+        const app = document.querySelector('.app');
-      else if (selectMode) { exitSelectMode(); renderList(); }
+        if (app && app.classList.contains('sidebar-open')) closeSidebar();
+        else if (!$('shortcutHelp').classList.contains('hidden')) $('shortcutHelp').classList.add('hidden');
+        else if (selectMode) { exitSelectMode(); renderList(); }
+      }
     }
   });
 
   $('modal').addEventListener('click', (e) => { if (e.target.id === 'modal') closeModal(); });
 
+  // Service mode controls
+  $('servicePlayBtn').addEventListener('click', () => Player.toggle());
+  $('serviceNextBtn').addEventListener('click', playNext);
+  $('servicePrevBtn').addEventListener('click', playPrev);
+  $('serviceExitBtn').addEventListener('click', exitServiceMode);
+
   // Mini now-playing bar
   $('miniPlayBtn').addEventListener('click', (e) => { e.stopPropagation(); Player.toggle(); });
   $('miniBar').addEventListener('click', () => {

frontend/index.html

@@ -256,6 +256,32 @@
       </div>
     </div>
 
+    <!-- Service mode (set-list view) overlay -->
+    <section id="serviceMode" class="service-mode hidden" aria-label="Service Mode">
+      <div class="service-topbar">
+        <div id="serviceWakeState" class="service-wake-state">Screen may sleep</div>
+        <button id="serviceExitBtn" class="service-exit-btn" type="button" aria-label="Exit Service Mode">Exit</button>
+      </div>
+      <div class="service-center">
+        <div class="service-meta">
+          <h1 id="serviceTitle" class="service-title"></h1>
+          <div id="serviceChannel" class="service-channel"></div>
+          <div id="serviceNote" class="service-note hidden"></div>
+        </div>
+        <div id="serviceUpNext" class="service-upnext">Last song</div>
+      </div>
+      <div class="service-bottom">
+        <div id="serviceTime" class="service-time">
+          <span id="serviceCurTime">0:00</span> / <span id="serviceDurTime">0:00</span>
+        </div>
+        <div class="service-controls">
+          <button id="servicePrevBtn" class="service-btn" type="button" aria-label="Previous track">⏮</button>
+          <button id="servicePlayBtn" class="service-btn service-btn-play" type="button" aria-label="Play or Pause">▶</button>
+          <button id="serviceNextBtn" class="service-btn" type="button" aria-label="Next track">⏭</button>
+        </div>
+      </div>
+    </section>
+
     <div id="toastContainer" class="toast-container"></div>
 
     <!-- Mini now-playing bar -->

frontend/styles.css

@@ -2458,3 +2458,271 @@ input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.25); }
 }
 .ve-marker-a { left: 0; }
 .ve-marker-b { right: 0; }
+
+/* ===================== Service Mode (Set-List View) ===================== */
+.service-mode {
+  position: fixed;
+  inset: 0;
+  width: 100vw;
+  height: 100vh;
+  height: 100dvh;
+  background: var(--bg);
+  color: var(--text);
+  z-index: 110;
+  display: flex;
+  flex-direction: column;
+  justify-content: space-between;
+  padding: calc(env(safe-area-inset-top, 0px) + 24px)
+           calc(env(safe-area-inset-right, 0px) + 28px)
+           calc(env(safe-area-inset-bottom, 0px) + 28px)
+           calc(env(safe-area-inset-left, 0px) + 28px);
+  box-sizing: border-box;
+  animation: fade 0.2s var(--ease);
+  overflow-y: auto;
+  user-select: none;
+}
+
+.service-topbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  width: 100%;
+  max-width: 900px;
+  margin: 0 auto;
+  gap: 16px;
+}
+
+.service-wake-state {
+  font-family: var(--ui);
+  font-size: 13px;
+  color: var(--text-dim);
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  letter-spacing: 0.01em;
+  transition: color 0.2s var(--ease);
+}
+
+.service-wake-state::before {
+  content: "";
+  display: inline-block;
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background: var(--line);
+  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
+}
+
+.service-wake-state.awake {
+  color: var(--text-2);
+}
+
+.service-wake-state.awake::before {
+  background: #34d399;
+  box-shadow: 0 0 10px rgba(52, 211, 153, 0.6);
+}
+
+.service-exit-btn {
+  background: var(--bg-3);
+  border: 1px solid var(--line);
+  color: var(--text);
+  padding: 9px 18px;
+  border-radius: var(--radius-sm);
+  font-family: var(--ui);
+  font-size: 13.5px;
+  font-weight: 600;
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  min-height: 40px;
+  touch-action: manipulation;
+  transition: all 0.16s var(--ease);
+}
+
+.service-exit-btn:hover {
+  background: var(--bg-2);
+  border-color: var(--accent);
+  transform: translateY(-1px);
+}
+
+.service-exit-btn:active {
+  transform: translateY(0);
+}
+
+.service-center {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  text-align: center;
+  max-width: 900px;
+  width: 100%;
+  margin: 0 auto;
+  padding: 24px 0;
+  flex: 1 1 auto;
+}
+
+.service-meta {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  width: 100%;
+}
+
+.service-title {
+  margin: 0 0 12px;
+  font-family: var(--display);
+  font-weight: 800;
+  font-size: clamp(28px, 5.5vw, 56px);
+  line-height: 1.15;
+  letter-spacing: -0.02em;
+  color: var(--text);
+  max-width: 100%;
+  word-break: break-word;
+}
+
+.service-channel {
+  font-family: var(--ui);
+  font-size: clamp(16px, 2.5vw, 22px);
+  color: var(--text-2);
+  font-weight: 500;
+  margin-bottom: 12px;
+}
+
+.service-note {
+  background: var(--bg-2);
+  border: 1px solid var(--line);
+  border-radius: var(--radius-sm);
+  padding: 14px 20px;
+  margin: 12px 0 0;
+  color: var(--text);
+  font-family: var(--ui);
+  font-size: clamp(14px, 2vw, 17px);
+  line-height: 1.5;
+  max-width: 680px;
+  width: calc(100% - 32px);
+  text-align: left;
+  white-space: pre-wrap;
+  word-break: break-word;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
+}
+
+.service-upnext {
+  margin-top: 24px;
+  font-family: var(--ui);
+  font-size: clamp(15px, 2.2vw, 20px);
+  color: var(--text-dim);
+  font-weight: 500;
+  letter-spacing: -0.01em;
+  max-width: 100%;
+  word-break: break-word;
+}
+
+.service-bottom {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 20px;
+  width: 100%;
+  max-width: 900px;
+  margin: 0 auto;
+}
+
+.service-time {
+  font-family: var(--mono);
+  font-size: clamp(17px, 2.8vw, 24px);
+  color: var(--text-2);
+  letter-spacing: 0.04em;
+  font-weight: 600;
+}
+
+.service-controls {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: clamp(18px, 4vw, 36px);
+}
+
+.service-btn {
+  background: var(--bg-2);
+  border: 1px solid var(--line);
+  color: var(--text);
+  border-radius: 50%;
+  width: clamp(56px, 12vw, 70px);
+  height: clamp(56px, 12vw, 70px);
+  font-size: clamp(20px, 4vw, 26px);
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  cursor: pointer;
+  touch-action: manipulation;
+  transition: all 0.16s var(--ease);
+}
+
+.service-btn:hover {
+  background: var(--bg-3);
+  border-color: var(--text-dim);
+  transform: scale(1.06);
+}
+
+.service-btn:active {
+  transform: scale(0.95);
+}
+
+.service-btn-play {
+  width: clamp(72px, 15vw, 92px);
+  height: clamp(72px, 15vw, 92px);
+  font-size: clamp(28px, 5.5vw, 38px);
+  background: linear-gradient(145deg, var(--accent-bright), var(--accent-deep));
+  border: none;
+  color: #fff;
+  box-shadow: 0 10px 28px -6px var(--accent-glow);
+}
+
+.service-btn-play:hover {
+  background: linear-gradient(145deg, var(--accent-bright), var(--accent-deep));
+  box-shadow: 0 14px 34px -4px var(--accent-glow);
+  transform: scale(1.06);
+}
+
+.service-btn-play:active {
+  transform: scale(0.95);
+}
+
+@media (max-height: 520px) {
+  .service-mode {
+    padding: 12px 20px;
+  }
+  .service-center {
+    padding: 8px 0;
+  }
+  .service-title {
+    font-size: clamp(22px, 4.5vh, 32px);
+    margin-bottom: 4px;
+  }
+  .service-channel {
+    font-size: 14px;
+    margin-bottom: 4px;
+  }
+  .service-upnext {
+    margin-top: 8px;
+    font-size: 14px;
+  }
+  .service-bottom {
+    gap: 10px;
+  }
+  .service-time {
+    font-size: 15px;
+  }
+  .service-btn {
+    width: 48px;
+    height: 48px;
+    font-size: 18px;
+  }
+  .service-btn-play {
+    width: 58px;
+    height: 58px;
+    font-size: 22px;
+  }
+}