// frontend/app/(protected)/layout.jsx
import Link from "next/link";
import { redirect } from "next/navigation";
import { getSession } from "@/lib/auth";
import { can } from "@/lib/rbac";

export const metadata = { title: "DMS | Protected" };

export default async function ProtectedLayout({ children }) {
  // ตรวจ session ฝั่งเซิร์ฟเวอร์ ด้วยคุกกี้จริง
  const session = await getSession();
  if (!session) {
    redirect("/login");
  }
  const { user } = session;

  return (
    <section className="grid grid-cols-12 gap-6 p-4 mx-auto max-w-7xl">
      <aside className="col-span-12 lg:col-span-3 xl:col-span-3">
        <div className="p-4 border rounded-3xl bg-white/70">
          <div className="mb-3 text-sm">
            RBAC: <b>{user.role}</b>
          </div>

          <nav className="space-y-2">
            <Link
              className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
              href="/dashboard"
            >
              แดชบอร์ด
            </Link>
            <Link
              className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
              href="/drawings"
            >
              Drawings
            </Link>
            <Link
              className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
              href="/rfas"
            >
              RFAs
            </Link>
            <Link
              className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
              href="/transmittals"
            >
              Transmittals
            </Link>
            <Link
              className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
              href="/correspondences"
            >
              Correspondences
            </Link>
            <Link
              className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
              href="/contracts-volumes"
            >
              Contracts & Volumes
            </Link>
            <Link
              className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
              href="/reports"
            >
              Reports
            </Link>

            {can(user, "workflow:view") && (
              <Link
                className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
                href="/workflow"
              >
                Workflow (n8n)
              </Link>
            )}
            {can(user, "health:view") && (
              <Link
                className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
                href="/health"
              >
                Health
              </Link>
            )}
            {can(user, "users:manage") && (
              <Link
                className="block px-4 py-2 rounded-xl bg-white/60 hover:bg-white"
                href="/users"
              >
                ผู้ใช้/บทบาท
              </Link>
            )}
          </nav>
        </div>
      </aside>

      <main className="col-span-12 space-y-6 lg:col-span-9 xl:col-span-9">
        {/* System / Quick Actions */}
        <div className="flex items-center gap-2">
          <div className="flex-1 text-lg font-semibold">
            Document Management System — LCP3 Phase 3
          </div>

          {can(user, "admin:view") && (
            <a
              className="px-3 py-2 text-white rounded-xl"
              style={{ background: "#0D5C75" }}
              href="/admin"
            >
              Admin
            </a>
          )}
          {can(user, "users:manage") && (
            <a
              className="px-3 py-2 text-white rounded-xl"
              style={{ background: "#0D5C75" }}
              href="/users"
            >
              ผู้ใช้/บทบาท
            </a>
          )}
          {can(user, "health:view") && (
            <a
              className="px-3 py-2 text-white rounded-xl"
              style={{ background: "#0D5C75" }}
              href="/health"
            >
              Health
            </a>
          )}
          {can(user, "workflow:view") && (
            <a
              className="px-3 py-2 text-white rounded-xl"
              style={{ background: "#0D5C75" }}
              href="/workflow"
            >
              Workflow
            </a>
          )}
          {can(user, "rfa:create") && (
            <a
              className="px-3 py-2 text-white rounded-xl"
              style={{ background: "#0D5C75" }}
              href="/rfas/new"
            >
              + RFA
            </a>
          )}
          {can(user, "drawing:upload") && (
            <a
              className="px-3 py-2 text-white rounded-xl"
              style={{ background: "#0D5C75" }}
              href="/drawings/upload"
            >
              + Upload Drawing
            </a>
          )}
          {can(user, "transmittal:create") && (
            <a
              className="px-3 py-2 text-white rounded-xl"
              style={{ background: "#0D5C75" }}
              href="/transmittals/new"
            >
              + Transmittal
            </a>
          )}
          {can(user, "correspondence:create") && (
            <a
              className="px-3 py-2 text-white rounded-xl"
              style={{ background: "#0D5C75" }}
              href="/correspondences/new"
            >
              + หนังสือสื่อสาร
            </a>
          )}
        </div>

        {children}
      </main>
    </section>
  );
}