65. www-y2mate.com [youtube] [downloader] [audio] [video]

/*
   nama  : yt downloader
   base  : https://www-y2mate.com/
   by    : wolep
   update: 7 november 2025, 12:47 wita
   note  : bisa download audio/video dan pilihan quality
           skrep langsung download buffer, bisa sih
           lu makek url download nya.. tapi perlu
           custom headers buat download file nya
           ribet wkwkw jadi gw langsung
           aja kasih buffer. biar langsung lu olah sendiri
   node  : v25.0.0
*/

import fs from 'node:fs'

const yt = {
    static: Object.freeze({
        baseUrl: 'https://cnv.cx',
        headers: {
            'accept-encoding': 'gzip, deflate, br, zstd',
            'origin': 'https://frame.y2meta-uk.com',
            'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 Edg/142.0.0.0',
        }
    }),

    log: function (message) {
        // return
        const name = 'yt-skrep'
        console.log(`[${name}] ${message}`)
    },

    resolveConverterPayload: function (link, userFormat = '128k') {
        const availableFormats = ['128k', '320k', '144p', '240p', '360p', '720p', '1080p']
        if (!availableFormats.includes(userFormat)) throw Error(`invalid format. available format: ${availableFormats.join(', ')}`)
        const format = userFormat.endsWith('k') ? 'mp3' : 'mp4'
        const audioBitrate = format === "mp3" ? parseInt(userFormat) + '' : '128'
        const videoQuality = format === "mp4" ? parseInt(userFormat) + '' : '720'
        const filenameStyle = 'pretty'
        const vCodec = 'h264'
        return { link, format, audioBitrate, videoQuality, filenameStyle, vCodec }
    },

    sanitizeFileName: function (fileName) {
        const ext = fileName.match(/\.[^.]+$/)[0]
        const fn = fileName.replace(new RegExp(`\\${ext}$`), '').replaceAll(/[^A-Za-z0-9]/g, '_').replace(/_+/g, '_').toLowerCase()
        return fn + ext
    },

    getBuffer: async function (urlDownload) {
        this.log('downloading file...')
        const headers = structuredClone(this.static.headers)
        headers.referer = 'https://v6.www-y2mate.com/'
        delete headers.origin
        const r = await fetch(urlDownload, { headers })
        if (!r.ok) throw Error(`${r.status} ${r.statusText} di fungsi getBuffer`)
        const ab = await r.arrayBuffer()
        const buff = Buffer.from(ab)
        this.log('sukses download file')
        return buff
    },


    getKey: async function () {
        this.log('coba ambil key')
        const endpoint = '/v2/sanity/key'
        const r = await fetch(this.static.baseUrl + endpoint, {
            headers: this.static.headers,
        })
        if (!r.ok) throw Error(`${r.status} ${r.statusText} di fungsi getKey`)
        const j = await r.json()
        return j
    },

    convert: async function (yt_url, userFormat) {
        const { key } = await this.getKey()

        this.log('coba ambil url')
        const payload = this.resolveConverterPayload(yt_url, userFormat)
        const headers = {
            key,
            ...this.static.headers
        }

        const endpoint = '/v2/converter'
        const r = await fetch(this.static.baseUrl + endpoint, {
            headers,
            method: 'post',
            body: new URLSearchParams(payload)
        })
        if (!r.ok) throw Error(`${r.status} ${r.statusText} di fungsi convert`)
        const j = await r.json()
        this.log('dapat url ' + j.url)
        return j
    },

    download: async function (yt_url, userFormat) {
        const { url, filename } = await this.convert(yt_url, userFormat)
        const fileName = this.sanitizeFileName(filename)
        const buffer = await this.getBuffer(url)
        return { fileName, buffer }
    }
}

// cara pakai
yt.download('https://www.youtube.com/watch?v=Ip6cw8gfHHI')
    .then(data => {
        // handle suka suka. param cuma file name dan buffer :v
        const { buffer, fileName } = data
        const filePath = './' + fileName
        fs.writeFileSync(filePath, buffer)
        console.log('sukses download! disimpan di ' + filePath)
    })
    .catch(error => {
        console.log('ada kesalahan', error.message)
    })

// atau yt.download('https://www.youtube.com/watch?v=Ip6cw8gfHHI', '360p')

export default yt