proxy.ts

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

export async function proxy(request: NextRequest) {
  let response = 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)
          );
          response = NextResponse.next({ request });
          cookiesToSet.forEach(({ name, value, options }) =>
            response.cookies.set(name, value, options)
          );
        },
      },
    }
  );

  // 刷新 session（重要：保持 token 不过期）
  const {
    data: { user },
  } = await supabase.auth.getUser();

  const { pathname } = request.nextUrl;

  if (pathname === "/") return response;

  // 未登录 → 跳转 /login
  if (!user && pathname !== "/login") {
    return NextResponse.redirect(new URL("/login", request.url));
  }

  // 已登录访问 /login → 跳转角色首页
  if (user && pathname === "/login") {
    const role = user.user_metadata?.role as string | undefined;
    const dest = role === "ADMIN" ? "/admin/dashboard" : "/staff/dashboard";
    return NextResponse.redirect(new URL(dest, request.url));
  }

  // 角色路由保护
  if (user) {
    const role = user.user_metadata?.role as string | undefined;

    if (pathname.startsWith("/admin") && role !== "ADMIN") {
      return NextResponse.redirect(new URL("/staff/dashboard", request.url));
    }

    if (pathname.startsWith("/staff") && role !== "STAFF") {
      return NextResponse.redirect(new URL("/admin/dashboard", request.url));
    }
  }

  return response;
}

export const config = {
  matcher: [
    "/((?!api|_next/static|_next/image|favicon.ico|.*\\.(?:svg|png|jpg|jpeg|gif|webp)$).*)",
  ],
};