// hooks/windowvariables/useLoadWindowVariables.ts
import { useEffect } from "react";
import { useDispatch } from "react-redux";
import { setInputs } from "../../redux/slices/digitalInputsSlice";

const requiredVars: string[] = [
  // Liste der benötigten Variablennamen
  "win_de_state",
  "win_de_label",
  // weitere Variablen...
];

const scripts: string[] = [
  "da.js",
  "de.js",
  "ae.js",
  "kueData.js",
  "Start.js",
  "System.js",
  "opcua.js",
];

const loadScript = (src: string): Promise<void> => {
  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(new Error(`Script load error: ${src}`));
    document.head.appendChild(script);
  });
};

export const useLoadWindowVariables = () => {
  const dispatch = useDispatch();

  useEffect(() => {
    const loadVariables = async () => {
      try {
        for (const script of scripts) {
          await loadScript(script);
        }

        const variablesObj: { [key: string]: any } = requiredVars.reduce(
          (acc, variable) => {
            const winVar = (window as any)[variable];
            if (winVar !== undefined) {
              acc[variable.replace("win_", "")] = winVar;
            }
            return acc;
          },
          {}
        );

        // Beispiel: Aktualisieren des Redux-Stores mit geladenen Variablen
        if (variablesObj.de_state && variablesObj.de_label) {
          const initialInputs = variablesObj.de_state.map(
            (status: number, index: number) => ({
              id: index + 1,
              label: variablesObj.de_label[index] || `Eingang ${index + 1}`,
              status: status === 1,
            })
          );
          dispatch(setInputs(initialInputs));
        }
      } catch (error) {
        console.error("Fehler beim Laden der Skripte oder Variablen:", error);
      }
    };

    loadVariables();
  }, [dispatch]);
};