// /pages/api/cpl/getAnalogInputsHandler.ts

import { NextApiRequest, NextApiResponse } from "next";
import fs from "fs";
import path from "path";

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

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

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

      function extractArray(name: string): any[] {
        const match = content.match(
          new RegExp(`var\\s+${name}\\s*=\\s*\\[([\\s\\S]*?)\\];`)
        );
        if (!match) return [];
        return match[1]
          .split(",")
          .map((s) => s.trim().replace(/^["']|["']$/g, ""))
          .slice(0, 8);
      }

      const responseData = {
        win_analogInputsValues: extractArray("win_analogInputsValues").map(
          Number
        ),
        win_analogInputsLabels: extractArray("win_analogInputsLabels"),
        win_analogInputsOffset: extractArray("win_analogInputsOffset").map(
          Number
        ),
        win_analogInputsFactor: extractArray("win_analogInputsFactor").map(
          Number
        ),
        win_analogInputsLoggerIntervall: extractArray(
          "win_analogInputsLoggerIntervall"
        ).map(Number),
        win_analogInputsUnits: extractArray("win_analogInputsUnits"),
        win_analogInputsWeighting: extractArray(
          "win_analogInputsWeighting"
        ).map(Number),
      };
      console.log("Analog Inputs Mock Data:", responseData);

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

    return res.status(400).json({ error: "Unsupported mode" });
  } catch (error) {
    console.error("❌ Fehler beim Lesen der analogen Eingänge:", error);
    return res.status(500).json({ error: "Fehler beim Lesen der Datei" });
  }
}