Update

services/m3u8.ts

@@ -0,0 +1,55 @@
+interface CacheEntry {
+  resolution: string | null;
+  timestamp: number;
+}
+
+const resolutionCache: { [url: string]: CacheEntry } = {};
+const CACHE_DURATION = 5 * 60 * 1000; // 5 minutes
+
+export const getResolutionFromM3U8 = async (
+  url: string
+): Promise<string | null> => {
+  // 1. Check cache first
+  const cachedEntry = resolutionCache[url];
+  if (cachedEntry && Date.now() - cachedEntry.timestamp < CACHE_DURATION) {
+    return cachedEntry.resolution;
+  }
+
+  if (!url.toLowerCase().endsWith(".m3u8")) {
+    return null;
+  }
+
+  try {
+    const response = await fetch(url);
+    if (!response.ok) {
+      return null;
+    }
+    const playlist = await response.text();
+    const lines = playlist.split("\n");
+    let highestResolution = 0;
+    let resolutionString: string | null = null;
+
+    for (const line of lines) {
+      if (line.startsWith("#EXT-X-STREAM-INF")) {
+        const resolutionMatch = line.match(/RESOLUTION=(\d+)x(\d+)/);
+        if (resolutionMatch) {
+          const height = parseInt(resolutionMatch[2], 10);
+          if (height > highestResolution) {
+            highestResolution = height;
+            resolutionString = `${height}p`;
+          }
+        }
+      }
+    }
+
+    // 2. Store result in cache
+    resolutionCache[url] = {
+      resolution: resolutionString,
+      timestamp: Date.now(),
+    };
+
+    return resolutionString;
+  } catch (error) {
+    return null;
+  }
+};