proxy.ts

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

export default async function proxy(request: NextRequest) {
  const path = request.nextUrl.pathname;

  let response = NextResponse.next({ request });

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

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

  const isLogin = path.startsWith('/login');
  const isPublic = path === '/login';

  if (!user && !isPublic) {
    return NextResponse.redirect(new URL('/login', request.url));
  }
  if (user && (isLogin || path === '/')) {
    return NextResponse.redirect(new URL('/dashboard', request.url));
  }
  return response;
}

export const config = {
  matcher: ['/((?!_next/static|_next/image|favicon.ico|.*\\.).*)'],
};