import type { Metadata } from "next";
import { cookies } from "next/headers";
import { redirect } from "next/navigation";
import { AdminPanelTabs } from "@/components/admin/AdminPanelTabs";
import Header from "@/components/Header";
import { searchAdminItems } from "@/lib/prisma/queries/items";
import { getAllSubscriptionTiers } from "@/lib/prisma/queries/subscription-tiers";
import { getUserById } from "@/lib/prisma/queries/users";
import { getSession } from "@/lib/redis/session";

export async function generateMetadata(): Promise<Metadata> {
  return {
    title: "Painel Administrativo",
    description:
      "Gerencie assinaturas, permissões e catalogação de itens exclusivos do Tibia Trade.",
  };
}

export default async function AdminPage({
  params,
  searchParams,
}: {
  params: Promise<{ locale: string }>;
  searchParams:
    | Promise<Record<string, string | string[]>>
    | Record<string, string | string[]>;
}) {
  const { locale } = await params;
  const resolvedSearchParams =
    searchParams instanceof Promise ? await searchParams : searchParams;
  const tabParam = resolvedSearchParams?.tab;
  const initialTab =
    typeof tabParam === "string" &&
    ["overview", "subscriptions", "items"].includes(tabParam)
      ? (tabParam as "overview" | "subscriptions" | "items")
      : "overview";

  const cookieStore = await cookies();
  const sessionId = cookieStore.get("sessionId")?.value;

  if (!sessionId) {
    redirect(`/${locale}`);
  }

  const session = await getSession(sessionId);
  if (!session || session.userId !== 1) {
    redirect(`/${locale}`);
  }

  const [tiers, adminUser, initialItems] = await Promise.all([
    getAllSubscriptionTiers(true),
    getUserById(session.userId),
    searchAdminItems({ page: 1, pageSize: 50 }),
  ]);

  const normalizedTiers = tiers.map((tier) => {
    const featureList = (tier.features ?? []) as Array<Record<string, any>>;
    return {
      ...tier,
      price_monthly: tier.price_monthly ? Number(tier.price_monthly) : null,
      price_yearly: tier.price_yearly ? Number(tier.price_yearly) : null,
      created_at:
        tier.created_at instanceof Date
          ? tier.created_at.toISOString()
          : tier.created_at,
      updated_at:
        tier.updated_at instanceof Date
          ? tier.updated_at.toISOString()
          : tier.updated_at,
      features: featureList.map((feature) => ({
        ...feature,
        created_at:
          feature.created_at instanceof Date
            ? feature.created_at.toISOString()
            : (feature.created_at ?? null),
        updated_at:
          feature.updated_at instanceof Date
            ? feature.updated_at.toISOString()
            : (feature.updated_at ?? null),
      })),
    };
  });

  return (
    <div className="min-h-screen bg-background text-foreground">
      <Header />
      <main className="container mx-auto px-4 py-10 space-y-8">
        <section className="space-y-2">
          <h1 className="text-3xl font-bold tracking-tight">
            Painel administrativo
          </h1>
          <p className="text-muted-foreground max-w-2xl">
            Centralize a gestão de planos, permissões e o catálogo de itens.
            Utilize as abas para acessar cada área temática.
          </p>
        </section>

        <AdminPanelTabs
          adminUser={adminUser}
          initialTiers={normalizedTiers}
          itemsData={initialItems}
          locale={locale}
          initialTab={initialTab}
        />
      </main>
    </div>
  );
}