import { useQuery } from "@tanstack/react-query";
import { useAuthToken } from "~/hooks/use-root-data";
import { getApiBaseUrl } from "~/utils/api-config";

/* ------------------------------------------------------------------ *
 * Admin panel data hooks (superuser only). The admin API is a new,
 * fast-moving surface, so these call it directly with fetch (same
 * pattern as use-seller-hooks' useMyStores) rather than the generated
 * client. Responses are camelCased by the backend renderer.
 * ------------------------------------------------------------------ */

export interface AdminOverview {
  generatedAt: string;
  users: {
    total: number;
    active: number;
    sellers: number;
    new7d: number;
    new30d: number;
  };
  sellers: {
    total: number;
    pending: number;
    approved: number;
    rejected: number;
    verified: number;
  };
  products: { total: number; active: number };
  orders: {
    total: number;
    pending: number;
    confirmed: number;
    shipped: number;
    delivered: number;
    cancelled: number;
    paidCount: number;
    revenueTotal: number;
    ordersToday: number;
    revenueToday: number;
  };
  money: {
    walletHeld: number;
    sellerPayable: number;
    payoutsPendingCount: number;
    payoutsPendingAmount: number;
  };
  ordersSeries: Array<{ date: string; orders: number; revenue: number }>;
}

async function adminGet<T>(path: string, token: string): Promise<T> {
  const res = await fetch(`${getApiBaseUrl()}/api/adminpanel/v1/${path}`, {
    headers: { Authorization: `Bearer ${token}` },
  });
  if (!res.ok) {
    throw new Error(`Admin request failed (${res.status})`);
  }
  return res.json();
}

export function useAdminOverview() {
  const token = useAuthToken();
  return useQuery({
    queryKey: ["admin", "overview"],
    enabled: !!token,
    refetchInterval: 60_000,
    queryFn: () => adminGet<AdminOverview>("overview/", token as string),
  });
}