import createIntlMiddleware from 'next-intl/middleware';
import { NextRequest, NextResponse } from 'next/server';
import { locales, defaultLocale } from './i18n/config';
import { createClient } from '@/lib/supabase/middleware';

const intlMiddleware = createIntlMiddleware({
  locales,
  defaultLocale,
  localePrefix: 'always',
});

export async function middleware(request: NextRequest) {
  // Create a response object to pass to Supabase client
  let response = NextResponse.next({
    request: {
      headers: request.headers,
    },
  });

  // Check if accessing dashboard route
  const pathname = request.nextUrl.pathname;
  const isDashboardRoute = pathname.match(/^\/(de|en|sr)\/dashboard/);

  if (isDashboardRoute) {
    // Create Supabase client
    const supabase = createClient(request, response);

    // Check authentication
    const { data: { user } } = await supabase.auth.getUser();

    if (!user) {
      // Extract locale from path
      const locale = pathname.split('/')[1];
      // Redirect to login page with locale preserved
      return NextResponse.redirect(new URL(`/${locale}/login`, request.url));
    }
  }

  // Continue with i18n middleware for all routes
  return intlMiddleware(request);
}

export const config = {
  matcher: [
    '/',
    '/(de|en|sr)/:path*',
    '/((?!api|_next|_vercel|.*\\..*).*)',
  ],
};