import ffmpeg from "fluent-ffmpeg";

import util from "util";
import { exec as execCallback } from "child_process";

const exec = util.promisify(execCallback); 
 
async function convertAudioToOgg(
  inputFile: string,
  outputFile: string
): Promise<void> {
  try { 
    const command = `ffmpeg -i ${inputFile} -c:a libopus ${outputFile}.ogg && rm ${inputFile}`;

    const { stdout, stderr } = await exec(command);

    console.log("Conversion finished");
    console.log("stdout:", stdout);
    console.error("stderr:", stderr);
  } catch (error) {
    console.error("Error:", error);
    throw error;
  }
}

function convertAudioToWav(
  inputFile: string,
  outputFile: string
): Promise<void> {
  return new Promise<void>((resolve, reject) => {
    const command = ffmpeg(inputFile)
      .audioCodec("pcm_s16le") // Set the audio codec to libvorbis (OGG)
      .format("wav") // Set the output format to OGG
      .on("end", () => {
        console.log("Conversion finished");
        resolve(); // Resolve the promise when the conversion is successful
      })
      .on("error", (err: any) => {
        console.error("Error:", err);
        reject(err); // Reject the promise if there is an error
      });

    // Save the output to the specified file
    command.save(outputFile);
  });
}

export { convertAudioToWav, convertAudioToOgg };