TradingviewSnapshotBot/index.js at main · toanbot/TradingviewSnapshotBot · GitHub

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#!/usr/bin/env node

const express = require('express');
const puppeteer = require('puppeteer');
const app = express();

let browser, page;

const chromeOptions = {
    headless: true,
    defaultViewport: null,
    args: [
        "--incognito",
        "--no-sandbox",
        "--single-process",
        "--no-zygote",
        "--disable-setuid-sandbox",
        "--disable-dev-shm-usage",
        "--disable-accelerated-2d-canvas",
        "--disable-gpu",
        "--window-size=1920x1080",
    ],
};

const blockedResourceTypes = [
  'image',
  'media',
  'font',
  'texttrack',
  'object',
  'beacon',
  'csp_report',
  'imageset',
];

const skippedResources = [
  'quantserve',
  'adzerk',
  'doubleclick',
  'adition',
  'exelator',
  'sharethrough',
  'cdn.api.twitter',
  'google-analytics',
  'googletagmanager',
  'google',
  'fontawesome',
  'facebook',
  'analytics',
  'optimizely',
  'clicktale',
  'mixpanel',
  'zedo',
  'clicksor',
  'tiqcdn',
];

app.get('/start-browser', async function (req, res) {
    browser = await puppeteer.launch(chromeOptions);
    page = await browser.newPage()
    await page.setRequestInterception(true);
    await page.setUserAgent("Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.82 Safari/537.36");
    await page.setViewport({
        width: 1920,
        height: 1080,
    });
    page.on('request', request => {
              const requestUrl = request._url.split('?')[0].split('#')[0];
              if (
                blockedResourceTypes.indexOf(request.resourceType()) !== -1 ||
                skippedResources.some(resource => requestUrl.indexOf(resource) !== -1)
              ) {
                request.abort();
              } else {
                request.continue();
              }
         });
    res.end('Browser Started');
});

app.get('/run', async function (req, res) {
    var base = req.query.base;
    var exchange = req.query.exchange;
    var ticker = req.query.ticker;
    var interval = req.query.interval;
    var theme = req.query.theme;
    const url = 'https://www.tradingview.com/'+base+'?symbol='+exchange+':'+ticker+'&interval='+interval+'&theme='+theme;
    await page.goto(url, {timeout: 25000, waitUntil: 'networkidle2',});
    const retrievedData = await page.evaluate(() => {
        return this._exposed_chartWidgetCollection.takeScreenshot()
    })
    res.end(retrievedData);
});

app.listen(3000);