"use client";
import { useEffect, useState } from "react";
import { useRouter } from "next/navigation";
import Link from "next/link";
import {
  ShieldHalf, Building2, CreditCard, FileText, LogOut, BarChart3,
  PieChart, RefreshCw, LifeBuoy, LayoutGrid,
} from "lucide-react";
import { api, clearToken } from "@/lib/api";

const nav = [
  { href: "/admin", label: "Dashboard", icon: LayoutGrid },
  { href: "/admin/organizations", label: "Organizations", icon: Building2 },
  { href: "/admin/utilization", label: "Utilization", icon: PieChart },
  { href: "/admin/retention", label: "Retention", icon: RefreshCw },
  { href: "/admin/plans", label: "Plans & Pricing", icon: CreditCard },
  { href: "/admin/revenue", label: "Revenue", icon: BarChart3 },
  { href: "/admin/support", label: "Support View", icon: LifeBuoy },
  { href: "/admin/audit", label: "Audit Logs", icon: FileText },
];

export default function AdminLayout({ children }: { children: React.ReactNode }) {
  const router = useRouter();
  const [me, setMe] = useState<any>(null);

  useEffect(() => {
    api("/me")
      .then((m) => {
        if (!m.is_product_admin) { router.replace("/dashboard"); return; }
        setMe(m);
      })
      .catch(() => { clearToken(); router.replace("/login"); });
  }, [router]);

  if (!me) return <div className="min-h-screen grid place-items-center text-slate-400">Loading…</div>;

  function logout() { clearToken(); window.location.href = "/login"; }

  return (
    <div className="flex min-h-screen bg-slate-50">
      <aside className="w-64 shrink-0 bg-sidebar text-white flex flex-col h-screen sticky top-0">
        <div className="px-6 py-6 flex items-center gap-3">
          <div className="h-10 w-10 rounded-xl bg-white/10 grid place-items-center">
            <ShieldHalf className="h-6 w-6" />
          </div>
          <div>
            <div className="font-extrabold text-lg leading-none">VerifyPack</div>
            <div className="text-[10px] text-white/50 mt-1">Super Admin Panel</div>
          </div>
        </div>
        <nav className="flex-1 overflow-y-auto px-3 space-y-1 mt-2">
          {nav.map(({ href, label, icon: Icon }) => (
            <Link key={href} href={href}
              className="flex items-center gap-3 px-3 py-2.5 rounded-xl text-sm font-medium text-white/70 hover:bg-white/10 hover:text-white">
              <Icon className="h-[18px] w-[18px]" /> {label}
            </Link>
          ))}
        </nav>
        <div className="p-4 space-y-2">
          <div className="rounded-xl bg-white/5 px-4 py-3 text-[11px]">
            <div className="text-white font-semibold">{me.name}</div>
            <div className="text-white/50 capitalize">{me.product_admin_role?.replace("_", " ")}</div>
          </div>
          <button onClick={logout}
            className="w-full flex items-center gap-2 px-3 py-2.5 rounded-xl text-sm font-medium text-white/70 hover:bg-white/10">
            <LogOut className="h-[18px] w-[18px]" /> Log out
          </button>
        </div>
      </aside>
      <main className="flex-1 min-w-0 p-8">{children}</main>
    </div>
  );
}