release: bump version to 0.27.7

frontend/public/earth/js/tv.js

@@ -21,8 +21,11 @@ let refreshPromise = null;
 let hlsPlayer = null;
 let hlsRecoveryAttempts = 0;
 let metaAutoCollapseTimer = null;
+const failedSourceIds = new Set();
+let probeTimer = null;
 
 const META_AUTO_COLLAPSE_DELAY = 2500;
+const PROBE_INTERVAL_MS = 2 * 60 * 1000;
 
 const HLS_MAX_RECOVERY_ATTEMPTS = 3;
 const HLS_RETRY_CONFIG = {
@@ -392,7 +395,7 @@ function attachVideoSource(video, source) {
           }
         }
 
-        if (!showEmbeddedFallback(source)) {
+        if (!showEmbeddedFallback(source) && !tryFallbackSource()) {
           setPanelMessage(TV_STATUS_MESSAGE.videoError);
         }
       });
@@ -425,6 +428,59 @@ function findSourceById(sourceId) {
   return tvPayload?.sources?.find((source) => source.id === sourceId) || null;
 }
 
+function markSourceFailed(sourceId) {
+  if (!sourceId) return;
+  failedSourceIds.add(sourceId);
+  renderSourceOptions();
+  if (!probeTimer) {
+    probeTimer = setInterval(probeFailedSources, PROBE_INTERVAL_MS);
+  }
+}
+
+function clearSourceFailed(sourceId) {
+  if (!failedSourceIds.has(sourceId)) return;
+  failedSourceIds.delete(sourceId);
+  renderSourceOptions();
+  if (failedSourceIds.size === 0 && probeTimer) {
+    clearInterval(probeTimer);
+    probeTimer = null;
+  }
+}
+
+async function probeFailedSources() {
+  if (failedSourceIds.size === 0) {
+    clearInterval(probeTimer);
+    probeTimer = null;
+    return;
+  }
+  for (const sourceId of [...failedSourceIds]) {
+    const source = findSourceById(sourceId);
+    if (!source) { failedSourceIds.delete(sourceId); continue; }
+    const probeUrl = source.stream_url || source.embed_url;
+    if (!probeUrl) continue;
+    try {
+      const resp = await fetch(probeUrl, {
+        method: "HEAD",
+        signal: AbortSignal.timeout(5000),
+      });
+      if (resp.ok) clearSourceFailed(sourceId);
+    } catch {
+      // 仍然失效，保持标记
+    }
+  }
+}
+
+function tryFallbackSource() {
+  const fallback = tvPayload?.fallback_source;
+  if (!fallback || fallback.id === currentSourceId) return false;
+  markSourceFailed(currentSourceId);
+  currentSourceId = fallback.id;
+  const { select } = getElements();
+  if (select) select.value = currentSourceId;
+  renderSource(fallback);
+  return true;
+}
+
 function getCurrentSource() {
   return findSourceById(currentSourceId);
 }
@@ -487,10 +543,11 @@ function renderSourceOptions() {
   const fragment = document.createDocumentFragment();
 
   sources.forEach((source) => {
-    const marker = source.id === tvPayload?.default_source_id ? " · 默认" : "";
+    const defaultMark = source.id === tvPayload?.default_source_id ? " · 默认" : "";
+    const failMark = failedSourceIds.has(source.id) ? " ⚠" : "";
     const option = document.createElement("option");
     option.value = source.id;
-    option.textContent = `${source.name}${marker}`;
+    option.textContent = `${source.name}${defaultMark}${failMark}`;
     fragment.appendChild(option);
   });
 
@@ -660,17 +717,19 @@ export function initTVPanel() {
 
   iframe?.addEventListener("load", () => {
     if (iframe.hidden) return;
+    clearSourceFailed(currentSourceId);
     setPanelMessage(TV_STATUS_MESSAGE.iframeReady);
   });
 
   video?.addEventListener("loadedmetadata", () => {
     if (video.hidden) return;
+    clearSourceFailed(currentSourceId);
     setPanelMessage(TV_STATUS_MESSAGE.videoReady);
   });
 
   video?.addEventListener("error", () => {
     const currentSource = getCurrentSource();
-    if (!showEmbeddedFallback(currentSource)) {
+    if (!showEmbeddedFallback(currentSource) && !tryFallbackSource()) {
       setPanelMessage(TV_STATUS_MESSAGE.videoError);
     }
   });