yt2mp3.gs scrape by claidex ( alfidev )

| import { createWriteStream } from "fs"; | |
| import { pipeline } from "stream/promises"; | |

| const EPS = "epsilon.epsiloncloud.org"; | |

| const ORIGIN = "https://yt2mp3.gs"; | |
| const youtube = "https://www.youtube.com/watch?v=dQw4w9WgXcQ"; | |
| const FORMAT = "mp3"; | |

| let key, geo; | |

| const HEADERS = { | |
| "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0", | |

| "Accept": "/", | | | "Accept-Language": "en-US,en;q=0.9", | | | "Origin": ORIGIN, | |

| "Referer": `${ORIGIN}/`, | |
| }; | |
| async function req(url, extra = {}) { | |
| const res = await fetch(url, { headers: { ...HEADERS, ...extra } }); | |
| const text = await res.text(); | |
| if (!res.ok) throw new Error(`HTTP ${res.status} ${url}`); | |
| return JSON.parse(text); | |

| } | |

| async function auth(vid, fmt) { | |
| const r = await req(`https://${EPS}/api/v1/auth?_=${Date.now()}`); | |
| if (r.error > 0) throw new Error(`auth: ${r.error}`); | |
| geo = r.geo; | |
| key = r.key; | |
| await initialize(vid, fmt); | |

| } | |

| async function initialize(vid, fmt) { | |
| console.log("→ initializing..."); | |
| const r = await req(`https://${EPS}/api/v1/init?_=${Date.now()}`, { Authorization: `Bearer ${key}` }); | |
| if (r.error > 0) throw new Error(`init: ${r.error}`); | |
| await convert(r.convertURL, vid, fmt, 0); | |

| } | |

| async function convert(cUrl, vid, fmt, redirected) { | |
| const r = await req(`${cUrl}&v=${vid}&f=${fmt}&_=${Date.now()}`); | |
| if (r.error > 0) throw new Error(`convert: ${r.error}`); | |
| if (redirected === 1) { | |

| return geo | | | ? waitProgress(r.progressURL, r.downloadURL, vid, fmt, r.title) | | | : download(r.downloadURL, vid, fmt, r.title); | | | } | | | if (r.redirect === 1) return convert(r.redirectURL, vid, fmt, 1); | | | await pollProgress(r.progressURL, r.downloadURL, vid, fmt); | | | } | | | const STATES = ["checking video", "extracting video", "converting video", "done"]; | |

| async function pollProgress(pUrl, dlUrl, vid, fmt, prev = -1) { | |
| const r = await req(`${pUrl}&_=${Date.now()}`); | |
| if (r.error > 0) throw new Error(`progress: ${r.error}`); | |
| if (r.title) console.log(` title: ${r.title}`); | |
| if (r.progress !== prev) console.log(` ${STATES[r.progress] || r.progress}`); | |
| if (r.progress < 3) { | |
| await delay(3000); | |

| return pollProgress(pUrl, dlUrl, vid, fmt, r.progress); | | | } | | | await download(dlUrl, vid, fmt); | | | } | | | async function waitProgress(pUrl, dlUrl, vid, fmt, title) { | |

| for (const s of ["extracting video", "converting video"]) { | |
| await delay(3000); | |
| console.log(` ${s}`); | |

| } | | | await download(dlUrl, vid, fmt, title); | | | } | |

| async function download(dlUrl, vid, fmt, title) { | |
| const safe = `${(title || vid).replace(/[/\\?%*:|"<>]/g, "_")}.${fmt}`; | |
| console.log(`\n✓ down: ${safe}`); | |
| const res = await fetch(`${dlUrl}&v=${vid}&f=${fmt}&r=cli`, { headers: HEADERS, redirect: "follow" }); | |
| if (!res.ok) throw new Error(`download: HTTP ${res.status}`); | |
| await pipeline(res.body, createWriteStream(safe)); | |
| console.log(`✓ saved: ${safe}`); | |

| } | |

| const delay = (ms) => new Promise((r) => setTimeout(r, ms)); | |
| function extractId(str) { | |
| return (/(?:youtu\.be\/|youtube\.com\/(?:embed\/|live\/|shorts\/)|[?&]v=)([a-zA-Z0-9-_]{11})/.exec(str) || [])[1] || null; | |

| } | |

| const vid = extractId(youtube); | |
| if (!vid) { console.error("invalid URL"); process.exit(1); } | |
| if (FORMAT !== "mp3" && FORMAT !== "mp4") { console.error("invalid format"); process.exit(1); } | |
| console.log(`\n→ processing [${vid}] as ${FORMAT}`); | |
| try { await auth(vid, FORMAT); } | |
| catch (e) { console.error("✗", e.message); process.exit(1); } |