Initial commit

hooks/usePlaylists.ts

@@ -0,0 +1,37 @@
+'use client';
+import { useEffect, useState } from 'react';
+
+type Subject = any;
+
+export function usePlaylists() {
+  const [subjects, setSubjects] = useState<Subject[]>([]);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<any>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+    setIsLoading(true);
+    setError(null);
+
+    fetch('/api/playlists')
+      .then(async (res) => {
+        if (!res.ok) throw new Error(`HTTP ${res.status}`);
+        const json = await res.json();
+        if (!cancelled) {
+          setSubjects(json.subjects ?? []);
+        }
+      })
+      .catch((err) => {
+        if (!cancelled) setError(err);
+      })
+      .finally(() => {
+        if (!cancelled) setIsLoading(false);
+      });
+
+    return () => {
+      cancelled = true;
+    };
+  }, []);
+
+  return { subjects, isLoading, error };
+}