[JS] YOUTUBE SCRAPER (DOWNLOAD)

let axios = require('axios')

function ytr(url) {
    let regEx = /^.*(youtu.be\/|v\/|e\/|u\/\w+\/|embed\/|v=)([^#\&\?]*).*/
    let id = url.match(regEx)
    return id[2]
}

function round(value, precision) {
    var multiplier = Math.pow(10, precision || 0)
    return Math.round(value * multiplier) / multiplier
}

var _1MB = 1024 * 1024
var _1GB = 1024 * _1MB
var _1TB = 1024 * _1GB

function formatSize(size) {
    if (size < 1024) {
        return size + ' B'
    } else if (size < _1MB) {
        return round(size/1024, 1) + ' KB'
    } else if (size < _1GB) {
        return round(size/_1MB, 1) + ' MB'
    } else if (size < _1TB) {
        return round(size/_1GB, 1) + ' GB'
    } else {
        return round(size/_1TB, 1) + ' TB'
    } return ''
}

function extract(id) {
    return new Promise(async(resolve, reject) => {
        let json = await axios.get('https://api.btclod.com/v1/youtube/get-download-link/?file_id=' + id)
        resolve(json.data)
    })
}

function analyze(url) {
    return new Promise(async(resolve, reject) => {
        let json = await axios.get('https://api.btclod.com/v1/youtube/extract-infos/?detail=' + ytr(url) + '&video=1')
        if (json.data.code != 200) return resolve({ creator: '@neoxrs – Wildan Izzudin', status: false })
        let video = [], audio = []
        for (let i=0; i<json.data.data.videos.length; i++) {
            video.push({
                id: json.data.data.videos[i].id,
                type: json.data.data.videos[i].extension,
                quality: json.data.data.videos[i].format_note,
                bytes: json.data.data.videos[i].file_size,
                size: json.data.data.videos[i].file_size != '~' ? formatSize(json.data.data.videos[i].file_size) : '~'
            })
        }
        for (let i=0; i<json.data.data.audios.length; i++) {
            audio.push({
                id: json.data.data.audios[i].id,
                type: json.data.data.audios[i].extension,
                quality: json.data.data.audios[i].format_note,
                bytes: json.data.data.audios[i].file_size,
                size: json.data.data.audios[i].file_size != '~' ? formatSize(json.data.data.audios[i].file_size) : '~'
            })
        } resolve({ creator: '@neoxrs – Wildan Izzudin', status: true, data: [ ...video, ...audio ] })
    })
}

// USAGE FUNCTION
// analyze('https://youtu.be/j5-yKhDd64s').then(res => console.log(res))
// extract('ajUteUtoRGQ2NHM6dmlkZW86Mzk4KzE0MDo3MjBwOm1wNA==').then(res => console.log(res))