#!/usr/bin/env node

/**
 * Anison & Anime MP3 Downloader
 * Dijalankan langsung dengan: node anison.js
 */

const fs = require('fs');
const path = require('path');
const { pipeline } = require('stream/promises');

// =========================================================================
// PENGATURAN LAGU DI DALAM FILE (Ubah judul lagu di sini):
// =========================================================================
const QUERY = "Another colony TRUE";  // Contoh lagu anime dari Anison Online
const DOWNLOAD_DIR = "./downloads";    // Lokasi folder download
// =========================================================================

// Bisa juga menerima argumen dari terminal jika dioper: node anison.js "Judul Lagu"
const targetQuery = process.argv.slice(2).join(" ").trim() || QUERY;

const HEADERS = {
  "Content-Type": "application/x-www-form-urlencoded",
  "Origin": "https://spotidown.app",
  "Referer": "https://spotidown.app/en7",
  "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36",
  "X-Requested-With": "XMLHttpRequest"
};

async function downloadSong() {
  console.log("==================================================");
  console.log("       ANISON / ANIME MP3 DOWNLOADER (.JS)        ");
  console.log("==================================================");
  console.log(`[*] Target Query : "${targetQuery}"`);
  console.log(`[*] Mencari katalog musik & anime...`);

  // 1. Cari lagu di engine
  let cookie = "";
  const searchRes = await fetch("https://spotidown.app/action", {
    method: "POST",
    headers: HEADERS,
    body: new URLSearchParams({ url: targetQuery, "g-recaptcha-response": "" })
  });

  if (!searchRes.ok) {
    throw new Error(`Pencarian gagal: HTTP ${searchRes.status}`);
  }

  const rawCookies = searchRes.headers.getSetCookie ? searchRes.headers.getSetCookie() : [searchRes.headers.get("set-cookie")];
  cookie = rawCookies.map(c => (c || "").split(";")[0]).filter(Boolean).join("; ");

  const searchData = await searchRes.json();
  if (searchData.error || !searchData.data) {
    throw new Error(searchData.message || "Lagu tidak ditemukan.");
  }

  const forms = [...searchData.data.matchAll(/<form name=["\']submitspurl["\'][^>]*>(.*?)<\/form>/gis)];
  if (!forms.length) {
    throw new Error(`Tidak ditemukan hasil untuk "${targetQuery}"`);
  }

  // Parse hasil teratas
  const dataMatch = forms[0][1].match(/name=["\']data["\']\s+value=["\']([^"\']+)["\']/i);
  if (!dataMatch) {
    throw new Error("Gagal mengurai metadata hasil pencarian.");
  }

  const meta = JSON.parse(Buffer.from(dataMatch[1], "base64").toString("utf-8"));
  const spotifyUrl = `https://open.spotify.com/track/${meta.tid}`;

  console.log(`\n[+] Lagu Ditemukan:`);
  console.log(`    - Judul   : ${meta.name}`);
  console.log(`    - Artis   : ${meta.artist}`);
  console.log(`    - Album   : ${meta.album || '-'}`);
  console.log(`    - Durasi  : ${meta.duration || '-'}`);
  console.log(`    - Spotify : ${spotifyUrl}`);

  // 2. Ambil token konversi lagu
  console.log(`\n[*] Menyiapkan konversi audio 320kbps...`);
  const trackRes = await fetch("https://spotidown.app/action", {
    method: "POST",
    headers: { ...HEADERS, Cookie: cookie },
    body: new URLSearchParams({ url: spotifyUrl, "g-recaptcha-response": "" })
  });

  const rawCookiesTrack = trackRes.headers.getSetCookie ? trackRes.headers.getSetCookie() : [trackRes.headers.get("set-cookie")];
  if (rawCookiesTrack.length) {
    cookie = rawCookiesTrack.map(c => (c || "").split(";")[0]).filter(Boolean).join("; ");
  }

  const trackJson = await trackRes.json();
  if (trackJson.error || !trackJson.data) {
    throw new Error(trackJson.message || "Gagal mendapatkan detail track.");
  }

  const dVal = trackJson.data.match(/name=["\']data["\']\s+value=["\']([^"\']+)["\']/i);
  const bVal = trackJson.data.match(/name=["\']base["\']\s+value=["\']([^"\']+)["\']/i);
  const tVal = trackJson.data.match(/name=["\']token["\']\s+value=["\']([^"\']+)["\']/i);

  if (!dVal || !bVal || !tVal) {
    throw new Error("Gagal mengekstrak token unduhan.");
  }

  // 3. Resolusi direct MP3 link
  const dlRes = await fetch("https://spotidown.app/action/track", {
    method: "POST",
    headers: { ...HEADERS, Cookie: cookie },
    body: new URLSearchParams({
      data: dVal[1],
      base: bVal[1],
      token: tVal[1]
    })
  });

  const dlJson = await dlRes.json();
  if (dlJson.error || !dlJson.data) {
    throw new Error(dlJson.message || "Gagal membuat direct download link.");
  }

  const mp3Match = dlJson.data.match(/href=["\'](https:\/\/rapid\.spotidown\.app\/[^"\']+)["\']/i);
  if (!mp3Match) {
    throw new Error("Direct link MP3 tidak ditemukan di respon server.");
  }

  const mp3Url = mp3Match[1];
  console.log(`[✓] Direct Link MP3 Siap:`);
  console.log(`    ${mp3Url}\n`);

  // 4. Download file ke folder lokal
  if (!fs.existsSync(DOWNLOAD_DIR)) {
    fs.mkdirSync(DOWNLOAD_DIR, { recursive: true });
  }

  const safeFilename = `${meta.name} - ${meta.artist}`.replace(/[\\/*?:"<>|]/g, "") + ".mp3";
  const outputPath = path.join(DOWNLOAD_DIR, safeFilename);

  console.log(`[*] Mengunduh file MP3 ke: ${outputPath}...`);
  const fileRes = await fetch(mp3Url);
  if (!fileRes.ok) {
    throw new Error(`Gagal mendownload stream audio: HTTP ${fileRes.status}`);
  }

  const fileStream = fs.createWriteStream(outputPath);
  // @ts-ignore
  await pipeline(fileRes.body, fileStream);

  const stats = fs.statSync(outputPath);
  const sizeMB = (stats.size / (1024 * 1024)).toFixed(2);

  console.log("==================================================");
  console.log(`[✓] SUKSES MENGUNDUH MP3!`);
  console.log(`    - File   : ${outputPath}`);
  console.log(`    - Ukuran : ${sizeMB} MB`);
  console.log("==================================================");
}

downloadSong().catch(err => {
  console.error("\n[!] Terjadi Kesalahan:", err.message);
  process.exit(1);
});