// /pages/api/cpl/getDigitalOutputsJsonHandler.ts

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

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

  if (mode === "json") {
    // Lese JSON-Datei z. B. digitalOutputsMockData.json
    const filePath = path.join(
      process.cwd(),
      "mocks/api/SERVICE/digitalOutputsMockData.json"
    );
    const content = await fs.readFile(filePath, "utf-8");
    const data = JSON.parse(content);
    return res.status(200).json(data);
  }

  if (mode === "jsSimulatedProd") {
    const digitalOutputsScript = readFileSync(
      "mocks/device-cgi-simulator/SERVICE/digitalOutputsMockData.js"
    );
    res.setHeader("Content-Type", "application/javascript");
    res.status(200).send(digitalOutputsScript);
    return;
  }

  return res.status(400).json({ error: "Unsupported mode" });
}