test.js

const fs = require("fs");
var ProgressBar = require("progress");
const axios = require("axios");

const INFO_URL = "https://slider.kz/vk_auth.php?q=";
const DOWNLOAD_URL = "https://slider.kz/download/";

const download = async (song, url) => {
  try {
    let numb = 1;
    console.log(`Starting download: ${song}`);
    console.log(url);
    url = url.replace(/,/g, "");
    console.log(url);
    const { data, headers } = await axios({
      method: "GET",
      url: url,
      responseType: "stream",
    });

    //for progress bar...
    const totalLength = headers["content-length"];
    const progressBar = new ProgressBar(
      "-> downloading [:bar] :percent :etas",
      {
        width: 40,
        complete: "=",
        incomplete: " ",
        renderThrottle: 1,
        total: parseInt(totalLength),
      }
    );

    data.on("data", (chunk) => progressBar.tick(chunk.length));
    data.on("end", () => {
      console.log("DOWNLOADED!");
      startDownloading(); //for next song!
    });

    //for saving in file...
    data.pipe(fs.createWriteStream(`${__dirname}/songs/${song}.mp3`));
  } catch (e) {
    console.log("some error came!", e);
  }
};

const getURL = async (song, singer) => {
  let query = (song + "%20" + singer).replace(/\s/g, "%20");
  console.log(INFO_URL + query);
  const { data } = await axios.get(encodeURI(INFO_URL + query));

  //   console.log(data);

  if (data["audios"][""].length <= 1) {
    //no result
    console.log("==[ SONG NOT FOUND! ]== : " + song);
    notFound.push(song + " - " + singer);
    startDownloading();
    return;
  }

  //avoid remix,revisited,mix
  let i = 0;
  let track = data["audios"][""][i];
  while (/remix|revisited|mix/i.test(track.tit_art)) {
    i += 1;
    track = data["audios"][""][i];
  }
  //if reach the end then select the first song
  if (!track) {
    track = data["audios"][""][0];
  }

  console.log(track);

  let link = DOWNLOAD_URL + track.id + "/";
  link = link + track.duration + "/";
  link = link + track.url + "/";
  link = link + track.tit_art + ".mp3" + "?extra=";
  link = link + track.extra;
  link = encodeURI(link); //to replace unescaped characters from link

  let songName = track.tit_art;
  songName.replace(/\?|<|>|\*|"|:|\||\/|\\/g, ""); //removing special characters which are not allowed in file name
  download(songName, link);
};

getURL("Кто я без тебя?", "Bahh Tee, Turken");

// https://slider.kz/download/-2001595053_94595053/179/cs3-5v4/p2/0c4a923a13e792/Bahh%20Tee%20Turken%20-%20Кто%20я%20без%20тебя?.mp3?extra=P-UsDbiPYWd6ElugnLEQ80oOsbcDYThLihfYLch4Ykqe9l_gzDZxktIvjc7B4k8QnjctXE1zps4TajmZP_Kyi_ygNO4vq2Kl1emR2myVy-NV9GUac8E56uLt9cb_Zj-SyFIEO3LiU5_JagSCydkKme4q&long_chunk=1

// https://slider.kz/download/-2001595053_94595053/179/cs3-5v4/p2/0c4a923a13e792/Bahh%20Tee%2C%20Turken%20-%20%D0%9A%D1%82%D0%BE%20%D1%8F%20%D0%B1%D0%B5%D0%B7%20%D1%82%D0%B5%D0%B1%D1%8F%3F.mp3?extra=P-UsDbiPYWd6ElugnLEQ80oOsbcDYThLihfYLch4Ykqe9l_gzDZxktIvjc7B4k8QnjctXE1zocwaYT6dOvC4i_ygNO4vq2Kl1emR2myVy-NV9GUac8E56uLt9cb_Zj-SyFIEO3LiBJ2eMVmEytkJz-t_&long_chunk=1