/**
 * Soundclouds Downloader
 * Base : https://downcloudme.com
 * Author : Gienetic
 * Request : knz
 */

import fs from 'fs';

const sandi = "b4f28fefc8";
const markas = "https://downcloudme.com/download-track";
const pantau = "https://www.scloudme.com/dl/status/";
const meta = "https://soundcloud.com/oembed";
const agen = "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Mobile Safari/537.36 AlohaBrowser/8.8.0 (Gienetic)";

const argumen = process.argv.slice(2);
const target = argumen.find(a => a.includes("soundcloud.com/"));

const jeda = (ms) => new Promise(r => setTimeout(r, ms));

const bersih = (teks) => teks.replace(/[<>:"/\\|?*]+/g, "_").replace(/\s+/g, " ").trim();

const lacak = (teks) => {
  const m = teks.match(/const jobId\s*=\s*"([^"]+)"/);
  return m ? m[1] : null;
};

const namai = (teks) => {
  const m = teks.match(/const fileName\s*=\s*"([^"]+)"/);
  return m ? m[1] : "unduhan.mp3";
};

const intai = async (url) => {
  try {
    const balasan = await fetch(`${meta}?url=${encodeURIComponent(url)}&format=json`);
    if (!balasan.ok) return null;
    const data = await balasan.json();
    return {
      judul: data.title || null,
      artis: data.author_name || null,
      sampul: data.thumbnail_url || null
    };
  } catch {
    return null;
  }
};

const tembak = async (url) => {
  const muatan = new URLSearchParams();
  muatan.append("url", url);
  muatan.append("downloader_verify", sandi);

  const balasan = await fetch(markas, {
    method: "POST",
    headers: {
      "content-type": "application/x-www-form-urlencoded",
      "origin": "https://downcloudme.com",
      "referer": "https://downcloudme.com/enTc/",
      "user-agent": agen
    },
    body: muatan.toString()
  });
  
  const teks = await balasan.text();
  const id = lacak(teks);
  const nama = namai(teks);
  
  if (!id) throw new Error("Gagal");
  return { id, nama };
};

const tunggu = async (id) => {
  for (let i = 0; i < 120; i++) {
    await jeda(1000);
    const balasan = await fetch(pantau + id, {
      headers: {
        "origin": "https://downcloudme.com",
        "user-agent": agen,
        "x-requested-with": "AlohaBrowser"
      }
    });
    
    if (balasan.status !== 200) continue;
    
    const data = await balasan.json();
    if (data.api2?.rapid_url) return data.api2.rapid_url;
    if (data.api2?.error) {
      if (data.api1?.download_link) return data.api1.download_link;
      throw new Error(data.api2.error);
    }
  }
  throw new Error("Batas");
};

const sedot = async (url, tujuan) => {
  const balasan = await fetch(url);
  if (!balasan.ok) throw new Error("Gagal");
  
  const kepingan = [];
  const pembaca = balasan.body.getReader();
  
  while (true) {
    const { done, value } = await pembaca.read();
    if (done) break;
    kepingan.push(value);
  }
  
  const utuh = Buffer.concat(kepingan);
  fs.writeFileSync(tujuan, utuh);
  return utuh.length;
};

const sikat = async (url) => {
  if (!url) {
    console.error(JSON.stringify({ status: false, galat: "Nihil" }, null, 2));
    return;
  }
  
  try {
    const hasil = { status: false, target: url, info: null, audio: null, ukuran: 0 };
    const info = await intai(url);
    if (info) hasil.info = info;

    const { id, nama } = await tembak(url);
    const tautan = await tunggu(id);

    let berkas = bersih(nama);
    if (info && info.artis && info.judul) {
      let tajuk = info.judul;
      if (tajuk.endsWith(` by ${info.artis}`)) {
        tajuk = tajuk.slice(0, -(4 + info.artis.length));
      }
      berkas = bersih(`${info.artis} - ${tajuk}.mp3`);
    }

    const ukuran = await sedot(tautan, berkas);
    hasil.audio = berkas;
    hasil.ukuran = ukuran;

    if (info && info.sampul) {
      const murni = info.sampul.replace("-t500x500", "-original");
      const wajah = berkas.replace(/\.mp3$/i, ".jpg");
      try {
        const u = await sedot(murni, wajah);
        hasil.sampul = { file: wajah, ukuran: u };
      } catch {
        try {
          const u = await sedot(info.sampul, wajah);
          hasil.sampul = { file: wajah, ukuran: u };
        } catch {}
      }
    }

    hasil.status = true;
    console.log(JSON.stringify(hasil, null, 2));
  } catch (e) {
    console.error(JSON.stringify({ status: false, galat: e.message }, null, 2));
  }
};

export { sikat };

if (argumen.length > 0) {
  sikat(target);
}

//node namafile.js "https://soundcloud.com/themarias/no-one-noticed"