proxy.ts

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

export async function proxy(request: NextRequest) {
  let response = NextResponse.next({
    request: {
      headers: request.headers,
    },
  });

  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)
          );
          response = NextResponse.next({
            request: {
              headers: request.headers,
            },
          });
          cookiesToSet.forEach(({ name, value, options }) =>
            response.cookies.set(name, value, options)
          );
        },
      },
    }
  );

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

  const { pathname, origin } = new URL(request.url);
  if (
    pathname === '/' ||
    pathname.includes('/auth/') ||
    pathname.includes('/api/')
  ) {
    if (user && pathname.includes('/auth/')) {
      return NextResponse.redirect(`${origin}/dashboard`);
    }
    return response;
  } else {
    if (user) return response;
    else return NextResponse.redirect(`${origin}/auth/sign-in`);
  }
}

export const config = {
  matcher: [
    /*
     * Match all request paths except for the ones starting with:
     * - _next/static (static files)
     * - _next/image (image optimization files)
     * - favicon.ico (favicon file)
     * Feel free to modify this pattern to include more paths.
     */
    '/((?!_next/static|_next/image|favicon.ico|.*\\.(?:svg|png|jpg|jpeg|gif|webp)$).*)',
  ],
};