// ✅ Service: /services/fetchDigitalInputsService.ts

export const fetchDigitalInputsService = async () => {
  const mode = process.env.NEXT_PUBLIC_CPL_MODE;

  // ✅ PRODUKTIV: lädt JavaScript vom Gerät über CGI
  if (mode === "production") {
    const scriptUrl = "/CPL?/CPL/SERVICE/digitalInputs.js";

    await new Promise<void>((resolve, reject) => {
      const script = document.createElement("script");
      script.src = scriptUrl;
      script.async = true;
      script.onload = () => resolve();
      script.onerror = () =>
        reject("❌ Fehler beim Laden der digitalen Eingänge (production)");
      document.body.appendChild(script);
    });

    const win = window as any;

    return Array.from({ length: 32 }, (_, i) => ({
      id: i + 1,
      value: win.win_de_state[i],
      label: win.win_de_label[i],
      invert: !!win.win_de_invert[i],
      counter: win.win_de_counter[i],
      timeFilter: win.win_de_time_filter[i],
      weighting: win.win_de_weighting[i],
      counterActive: !!win.win_de_counter_active[i],
      eingangOffline: !!win.win_de_offline[i],
      status: !!win.win_de_state[i],
    }));
  }

  // ✅ JSON-MODUS (API gibt JSON-Daten zurück)
  if (mode === "json") {
    const res = await fetch("/api/cpl/getDigitalInputsHandler");
    if (!res.ok)
      throw new Error("❌ Fehler beim Laden der digitalen Eingänge (json)");

    const data = await res.json();
    console.log("📡 JSON-Daten geladen in service:", data);
    return data.win_de_state.map((_: any, i: number) => ({
      id: i + 1,
      value: data.win_de_state[i],
      label: data.win_de_label[i],
      invert: !!data.win_de_invert[i],
      counter: data.win_de_counter[i],
      timeFilter: data.win_de_time_filter[i],
      weighting: data.win_de_weighting[i],
      counterActive: !!data.win_de_counter_active[i],
      eingangOffline: !!data.win_de_offline[i],
      status: !!data.win_de_state[i],
    }));
  }

  // ✅ JSMOCK-MODUS (Script einbinden und aus window lesen)
  if (mode === "jsmock") {
    const res = await fetch("/api/cpl/getDigitalInputsHandler");
    if (!res.ok)
      throw new Error("❌ Fehler beim Laden der digitalen Eingänge (json)");

    const data = await res.json();
    console.log("📡 JSMOCK-Daten geladen in service:", data);

    return data.win_de_state.map((_: any, i: number) => ({
      id: i + 1,
      value: data.win_de_state[i],
      label: data.win_de_label[i],
      invert: !!data.win_de_invert[i],
      counter: data.win_de_counter[i],
      timeFilter: data.win_de_time_filter[i],
      weighting: data.win_de_weighting[i],
      counterActive: !!data.win_de_counter_active[i],
      eingangOffline: !!data.win_de_offline[i],
      status: !!data.win_de_state[i],
    }));
  }

  // ❌ Unbekannter Modus
  throw new Error(`❌ Unbekannter NEXT_PUBLIC_CPL_MODE: ${mode}`);
};