// utils/loadWindowVariables.js
export async function loadWindowVariables() {
  return new Promise((resolve, reject) => {
    const requiredVars = [
      "last20Messages",
      "deviceName",
      "mac1",
      "mac2",
      "ip",
      "subnet",
      "gateway",
      "datetime",
      "ntp1",
      "ntp2",
      "ntp3",
      "systemZeit",
      "ntpTimezone",
      "ntpActive",
      "de",
      "counter",
      "flutter",
      "kueOnline",
      "kueID",
      "kueAlarm1",
      "kueAlarm2",
      "kueRes",
      "kueCableBreak",
      "kueGroundFault",
      "kueLimit1",
      "kueLimit2Low",
      "kueDelay1",
      "kueLoopInterval",
      "kueVersion",
      "tdrAtten",
      "tdrPulse",
      "tdrSpeed",
      "tdrAmp",
      "tdrTrigger",
      "tdrLocation",
      "tdrActive",
      "kueOverflow",
      "kueResidence",
      "tdrLast",
      "appVersion",
    ];

    const loadScript = (src) => {
      return new Promise((resolve, reject) => {
        const script = document.createElement("script");
        const environment = process.env.NEXT_PUBLIC_NODE_ENV || "production";
        script.src =
          environment === "production"
            ? `/CPL?/CPL/SERVICE/${src}`
            : `/CPLmockData/SERVICE/${src}`;
        script.async = true;
        script.onload = resolve;
        script.onerror = reject;
        document.head.appendChild(script);
      });
    };

    const scripts = ["de.js", "kueData.js", "Start.js", "System.js"];

    scripts
      .reduce(
        (promise, script) => promise.then(() => loadScript(script)),
        Promise.resolve()
      )
      .then(() => {
        const variablesObj = requiredVars.reduce((acc, variable) => {
          if (window[variable] !== undefined) {
            acc[variable] = window[variable];
          }
          return acc;
        }, {});
        resolve(variablesObj);
      })
      .catch((error) => {
        console.error("Fehler beim Laden eines Skripts:", error);
        reject(error);
      });
  });
}