since3-portal/app/admin/clients/[id]/layout.tsx

import { notFound, redirect } from "next/navigation";
import { createAdminClient } from "@/lib/supabase/admin";
import { verifySession } from "@/lib/supabase/dal";
import { Params } from "@/modules/shared/types/user";

export default async function ClientDetailLayout({
    children,
    params,
}: {
    children: React.ReactNode;
    params: Params;
}) {
    const session = await verifySession();
    if (!session.isAdmin) redirect("/client/dashboard");

    const { id } = await params;
    const supabase = createAdminClient();
    const { data: client } = await supabase
        .from("profiles")
        .select("id")
        .eq("id", id)
        .eq("role", "client")
        .single();

    if (!client) notFound();

    return children;
}