// services/fetchMessagesService.ts
export const fetchMessagesService = async (
  fromDate: string,
  toDate: string
) => {
  const from = new Date(fromDate);
  const to = new Date(toDate);

  const fy = from.getFullYear();
  const fm = String(from.getMonth() + 1).padStart(2, "0");
  const fd = String(from.getDate()).padStart(2, "0");
  const ty = to.getFullYear();
  const tm = String(to.getMonth() + 1).padStart(2, "0");
  const td = String(to.getDate()).padStart(2, "0");

  const isLocalHost =
    typeof window !== "undefined" &&
    ["localhost", "127.0.0.1", "::1"].includes(window.location.hostname);
  const forceMocks =
    typeof process !== "undefined" &&
    process.env.NEXT_PUBLIC_USE_MOCKS === "1";
  const useMocks = forceMocks || isLocalHost;

  const url = useMocks
    ? `/api/cpl/messages?fromDate=${fromDate}&toDate=${toDate}`
    : `/CPL?Service/ae.ACP&MSS1=${fy};${fm};${fd};${ty};${tm};${td};All`;

  const response = await fetch(url);
  const raw = await response.json();
  const data = Array.isArray(raw) ? raw : raw.data;
  if (!response.ok) throw new Error("Fehler beim Laden der Meldungen");
  return data;
};