// /pages/api/cpl/getDgitalInputsHandler.ts
import fs from "fs";
import path from "path";
import type { NextApiRequest, NextApiResponse } from "next";

export default function handler(req: NextApiRequest, res: NextApiResponse) {
  try {
    const mode = process.env.NEXT_PUBLIC_CPL_MODE;

    if (mode === "json") {
      const filePath = path.join(
        process.cwd(),
        "mocks",
        "api",
        "SERVICE",
        "digitalInputsMockData.json"
      );
      const fileContent = fs.readFileSync(filePath, "utf-8");
      const json = JSON.parse(fileContent);
      return res.status(200).json(json);
    }

    if (mode === "jsmock") {
      const jsPath = path.join(
        process.cwd(),
        "mocks/device-cgi-simulator/SERVICE/digitalInputsMockData.js"
      );
      const fileContent = fs.readFileSync(jsPath, "utf-8");

      const extractArray = (name: string) => {
        const match = fileContent.match(
          new RegExp(`var\\s+${name}\\s*=\\s*\\[([\\s\\S]*?)\\];`)
        );
        if (!match) throw new Error(`Feld ${name} nicht gefunden`);
        return match[1]
          .split(",")
          .map((s) => s.trim().replace(/^["']|["']$/g, ""));
      };

      const data = {
        win_de_state: extractArray("win_de_state").map(Number),
        win_de_invert: extractArray("win_de_invert").map(Number),
        win_de_counter: extractArray("win_de_counter").map(Number),
        win_de_time_filter: extractArray("win_de_time_filter").map(Number),
        win_de_weighting: extractArray("win_de_weighting").map(Number),
        win_de_counter_active: extractArray("win_de_counter_active").map(
          Number
        ),
        win_de_offline: extractArray("win_de_offline").map(Number),
        win_de_label: extractArray("win_de_label"),
      };

      return res.status(200).json(data);
    }

    return res.status(400).json({ error: "Ungültiger Modus" });
  } catch (error) {
    console.error("❌ Fehler beim Parsen der digitalen Eingänge:", error);
    return res
      .status(500)
      .json({ error: "Fehler beim Parsen der digitalen Eingänge" });
  }
}