import { createServerClient } from '@supabase/ssr';
import { NextResponse, type NextRequest } from 'next/server';

export async function middleware(request: NextRequest) {
  let supabaseResponse = NextResponse.next({
    request,
  });

  const supabase = createServerClient(
    process.env.NEXT_PUBLIC_SUPABASE_URL!,
    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
    {
      cookies: {
        getAll() {
          return request.cookies.getAll();
        },
        setAll(cookiesToSet) {
          cookiesToSet.forEach(({ name, value }) => request.cookies.set(name, value));
          supabaseResponse = NextResponse.next({
            request,
          });
          cookiesToSet.forEach(({ name, value, options }) =>
            supabaseResponse.cookies.set(name, value, options)
          );
        },
      },
    }
  );

  // Get the current user session securely
  const {
    data: { user },
  } = await supabase.auth.getUser();

  // If the user is trying to access ANY /admin route (except the login page)
  if (
    !user &&
    request.nextUrl.pathname.startsWith('/admin') &&
    !request.nextUrl.pathname.startsWith('/admin/login')
  ) {
    // Kick them out to the login page
    const url = request.nextUrl.clone();
    url.pathname = '/admin/login';
    return NextResponse.redirect(url);
  }

  return supabaseResponse;
}

export const config = {
  matcher: ['/admin/:path*'], // Run only on admin routes to keep the main shop fast
};