feat: Implement HLS download and enhance copy link functionality to support original and proxied URLs.

lib/utils/proxy-utils.ts

@@ -0,0 +1,28 @@
+import { NextRequest } from 'next/server';
+
+export async function processM3u8Content(
+    content: string,
+    baseUrl: string,
+    origin: string
+): Promise<string> {
+    const lines = content.split('\n');
+    const base = new URL(baseUrl);
+
+    const processedLines = lines.map(line => {
+        // Skip comments and empty lines
+        if (line.trim().startsWith('#') || !line.trim()) {
+            return line;
+        }
+
+        // Resolve relative URLs
+        try {
+            const absoluteUrl = new URL(line.trim(), base).toString();
+            // Wrap in proxy
+            return `${origin}/api/proxy?url=${encodeURIComponent(absoluteUrl)}`;
+        } catch (e) {
+            return line;
+        }
+    });
+
+    return processedLines.join('\n');
+}