update

frontend/src/lib/utils.ts

@@ -5,6 +5,20 @@ export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs));
 }
 
+export function getCalendarNameFromUrl(icsUrl: string | null | undefined): string | null {
+  if (!icsUrl) return null;
+  try {
+    const url = new URL(icsUrl);
+    const pathname = url.pathname;
+    const filename = pathname.split('/').pop() || '';
+    // Decode URL encoding (e.g., %20 -> space) and remove .ics extension
+    const decoded = decodeURIComponent(filename).replace(/\.ics$/i, '');
+    return decoded || null;
+  } catch {
+    return null;
+  }
+}
+
 export function getAvatarColor(name?: string): string {
   const colors = [
     'hsl(var(--tag-green))',