recaptcha_v2.rb

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'kimurai'
  gem 'two_captcha'
end

require 'kimurai'
require 'two_captcha'

class RecaptchaV2 < Kimurai::Base
  API_KEY = 'XXXXXXXXXXXXXXXXXXXX'
  URL = 'https://2captcha.com/demo/recaptcha-v2'

  @name = 'recaptcha_v2_spider'
  @engine = :selenium_chrome
  @start_urls = [URL]
  @config = {
    user_agent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.84 Safari/537.36'
  }

  def parse(_response, _url, data: {})
    recaptcha = browser.find(:xpath, '//div[@id="recaptcha"]')
    google_key = recaptcha['data-sitekey']
    client = TwoCaptcha.new(API_KEY)
    options = {
      googlekey: google_key,
      pageurl: URL
    }
    captcha = client.decode_recaptcha_v2(options)
    browser.execute_script("document.getElementById('g-recaptcha-response').style.display = 'block';")
    browser.fill_in 'g-recaptcha-response', with: captcha.text
    browser.execute_script("document.getElementById('g-recaptcha-response').style.display = 'none';")
    browser.find(:css, '.btn_blue').click
  end
end

RecaptchaV2.crawl!