bot-whatsapp/packages/provider/src/venom/utils.js

const { writeFile } = require('fs')

const venomCleanNumber = (number, full = false) => {
    number = number.replace('@c.us', '')
    number = !full ? `${number}@c.us` : `${number}`
    return number
}

const venomGenerateImage = (base) => {
    const matches = base.match(/^data:([A-Za-z-+\/]+);base64,(.+)$/)
    if (matches.length !== 3) {
        return new Error('Invalid input string')
    }

    let response = {}
    response.type = matches[1]
    response.data = new Buffer.from(matches[2], 'base64')

    var imageBuffer = response
    writeFile(
        `${process.cwd()}/qr.png`,
        imageBuffer['data'],
        'binary',
        (err) => {
            if (err != null) throw new Error('ERROR_QR_GENERATE')
            return
        }
    )
}

const venomisValidNumber = (rawNumber) => {
    const regexGroup = /\@g.us\b/gm
    const exist = rawNumber.match(regexGroup)
    return !exist
}
module.exports = { venomCleanNumber, venomGenerateImage, venomisValidNumber }