import { useAppSelector } from './useAppDispatch';

export 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 };
}