"use client";

import { useEffect } from "react";
import Link from "next/link";
import { usePathname, useRouter } from "next/navigation";
import { useAuth } from "@/components/AuthProvider";
import { PageHeader } from "@/components/ui/PageHeader";

const TABS = [
  { href: "/settings/organization", label: "Organization" },
  { href: "/settings/members", label: "Members" },
  { href: "/settings/nodes", label: "Node Ownership" },
  { href: "/settings/api-keys", label: "API Keys" },
  { href: "/settings/billing", label: "Billing" },
];

export default function SettingsLayout({ children }: { children: React.ReactNode }) {
  // SAAS_PLAN.md B7: this used to gate on isAdmin (platform admin) alone,
  // which meant a paying customer who is their own org's owner couldn't
  // reach their own billing/members/node-ownership settings — "admin" here
  // conflated "platform operator" with "org owner". isAdmin still passes
  // (support/debugging access to any org's settings), but org_role ===
  // "owner" is now sufficient on its own.
  const { isAdmin, isOrgOwner, loading } = useAuth();
  const canAccess = isAdmin || isOrgOwner;
  const pathname = usePathname();
  const router = useRouter();

  useEffect(() => {
    if (!loading && !canAccess) router.replace("/");
  }, [loading, canAccess, router]);

  if (loading || !canAccess) return null;

  return (
    <div className="space-y-6">
      <PageHeader
        title="Settings"
        description="Organization profile, team access, node ownership, API keys, and billing."
      />

      <div className="flex flex-wrap gap-1 bg-gray-900 border border-gray-800 rounded-lg p-1 w-fit max-w-full overflow-x-auto">
        {TABS.map((t) => (
          <Link
            key={t.href}
            href={t.href}
            className={`text-sm font-mono px-4 py-1.5 rounded-md transition-colors whitespace-nowrap ${
              pathname === t.href || pathname.startsWith(t.href + "/")
                ? "bg-gray-800 text-white"
                : "text-gray-500 hover:text-gray-300"
            }`}
          >
            {t.label}
          </Link>
        ))}
      </div>

      {children}
    </div>
  );
}