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src/hooks/usePermissions.ts

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+import { useAppSelector } from './useAppDispatch';
+
+type Permission = 'download' | 'upload' | 'admin' | 'manage_users' | 'edit_metadata' | 'delete_tracks';
+
+const ROLE_PERMISSIONS: Record<string, Permission[]> = {
+  admin: ['download', 'upload', 'admin', 'manage_users', 'edit_metadata', 'delete_tracks'],
+  user: ['download', 'upload'],
+};
+
+export function usePermissions() {
+  const user = useAppSelector((s) => s.auth.user);
+
+  const hasPermission = (permission: Permission): boolean => {
+    if (!user) return false;
+    return ROLE_PERMISSIONS[user.role]?.includes(permission) ?? false;
+  };
+
+  const isAdmin = user?.role === 'admin';
+
+  return { hasPermission, isAdmin, user };
+}