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@gilpanal

gilpanal/app.js

Last active April 3, 2024 15:16
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  1. gilpanal revised this gist Jun 9, 2020. No changes.
  2. gilpanal revised this gist Jun 9, 2020. No changes.
  3. gilpanal created this gist Jun 9, 2020.
    32 changes: 32 additions & 0 deletions app.js
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    Original file line number Diff line number Diff line change
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    const TEL_PATH = '/music/file_352.mp3'
    const API_FILEDONWLOAD = 'http://localhost:3000/fileDownload?'

    const load = () => {

    return new Promise((resolve, reject) => {
    const xhr = new XMLHttpRequest()

    xhr.open('GET', API_FILEDONWLOAD + TEL_PATH, true)
    xhr.responseType = 'arraybuffer'
    xhr.send()

    xhr.addEventListener('progress', (e) => {
    console.log(`${e.type}: ${e.loaded} bytes transferred\n`)
    })

    xhr.addEventListener('load', (e) => {
    const audioData = e.target.response || e.target.result
    resolve(audioData)
    })

    xhr.addEventListener('error', () => {
    reject(Error('Track ' + TEL_PATH + ' failed to load'))
    })
    })
    }

    load().then((audiData) => {
    console.log(audiData)
    }).catch((err) =>{
    console.log(err)
    })
    12 changes: 12 additions & 0 deletions index.html
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    <!DOCTYPE html>
    <html lang="en">
    <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    </head>
    <body>
    BODY
    <script src="app.js"></script>
    </body>
    </html>
    42 changes: 42 additions & 0 deletions server.js
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    /* TESTED WITH NODE VERSION 14+ */

    const express = require('express')
    const app = express()
    const https = require('https')
    const port = process.env.PORT || 3000

    // Use an Environment Variable to Secure Token Value
    const BOT_TOKEN = <BOT_SECRET_TOKEN>


    // For better CORS: https://expressjs.com/en/resources/middleware/cors.html
    app.use( (req, res, next) => {
    res.header('Access-Control-Allow-Origin', '*')
    res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept')
    next()
    })

    app.get('/', (req, res) => {
    res.sendStatus(200)
    })

    // Inspired by: https://stackoverflow.com/a/21024737
    app.get('/fileDownload', (req, res) => {
    let uploadResponse = { ok: false, result: null, error: 404, description: 'Not Found' }
    if (req._parsedUrl && req._parsedUrl.query) {
    const tel_file_path = 'https://api.telegram.org/file/bot' + BOT_TOKEN + req._parsedUrl.query
    https.get(tel_file_path, (response) => {
    const data = []
    response.on('data', (chunk) => {
    data.push(chunk)
    }).on('end', () => {
    const buffer = Buffer.concat(data)
    res.send(buffer)
    })
    })
    } else {
    res.sendStatus(uploadResponse)
    }
    })

    app.listen(port)