import { createServerClient } from "@supabase/ssr";
import { type NextRequest, NextResponse } 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);
          });
        },
      },
    },
  );

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

  // Redirecionar rota raiz
  if (request.nextUrl.pathname === "/") {
    if (user) {
      return NextResponse.redirect(new URL("/dashboard", request.url));
    } else {
      return NextResponse.redirect(new URL("/login", request.url));
    }
  }

  // Proteger /dashboard
  if (request.nextUrl.pathname.startsWith("/dashboard") && !user) {
    return NextResponse.redirect(new URL("/login", request.url));
  }

  // Redirecionar de /login para /dashboard se já autenticado
  if (request.nextUrl.pathname === "/login" && user) {
    return NextResponse.redirect(new URL("/dashboard", request.url));
  }

  return supabaseResponse;
}

export const config = {
  matcher: ["/", "/dashboard/:path*", "/login"],
};