// app/admin/dashboard/employees/permissions/edit/[id]/page.tsx
import PermissionForm from '@/app/components/admin/permissions/PermissionForm';
import { authService } from '@/services/auth-service';
import { PERMISSIONS } from '@/lib/permissions';
import { redirect } from 'next/navigation';
import { getTokenFromCookies } from '@/lib/auth-utils';
import { Metadata } from 'next';

export const metadata: Metadata = {
  title: 'Edit Permission',
  description: 'Edit a permission with specific permissions to control access levels.',
};

async function getPermissionData(permissionId: string, token: string) {
  try {
    const response = await fetch(`${process.env.NEXTAUTH_URL}/api/backend/admin/newpermissions/${permissionId}`, {
      cache: 'no-store',
      headers: { Authorization: `Bearer ${token}` }
    });
    if (response.ok) return await response.json();
    if (response.status === 401 || response.status === 403) redirect('/admin/login');
    if (response.status === 404) return null;
  } catch (error) {
    console.error('Failed to fetch permission data:', error);
    throw error;
  }
  return null;
}

interface EditPermissionPageProps { params: Promise<{ id: string }>; }

export default async function EditPermissionPage({ params }: EditPermissionPageProps) {
  const { id } = await params;
  const token = await getTokenFromCookies();

  if (!token) redirect('/admin/login');

  const verifiedToken = await authService.verifyToken(token);
  if (!verifiedToken) redirect('/admin/login');

  const hasPermission = await authService.checkUserPermission(token, PERMISSIONS.PERMISSIONS_UPDATE);
  if (!hasPermission) {
    return (
      <div className="max-w-4xl mx-auto">
        <div className="bg-var-danger-bg border border-var-danger-border rounded-2xl p-6 text-center">
          <h1 className="text-2xl font-bold text-var-danger-text">Access Denied</h1>
          <p className="text-var-danger-text mt-2">You don`t have permission to edit permissions.</p>
        </div>
      </div>
    );
  }

  let permissionData;
  try {
    permissionData = await getPermissionData(id, token);
  } catch {
    return (
      <div className="max-w-4xl mx-auto">
        <div className="bg-var-danger-bg border border-var-danger-border rounded-2xl p-6 text-center">
          <h1 className="text-2xl font-bold text-var-danger-text">Error</h1>
          <p className="text-var-danger-text mt-2">Failed to load permission data. Please try again.</p>
        </div>
      </div>
    );
  }

  if (!permissionData) {
    return (
      <div className="max-w-4xl mx-auto">
        <div className="text-center py-12">
          <div className="text-var-text-muted">
            <svg className="w-12 h-12 mx-auto mb-3 text-var-text-disabled" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4c-.77-.833-1.964-.833-2.732 0L4.082 16.5c-.77.833.192 2.5 1.732 2.5z" />
            </svg>
            <p className="text-lg font-medium text-var-text">Permission not found</p>
            <p className="text-sm mt-1 text-var-text-muted">The permission you`re looking for doesn`t exist.</p>
          </div>
        </div>
      </div>
    );
  }

  return <PermissionForm permissionId={id} initialData={permissionData.permission} />;
}