Class: Tanakai::BrowserBuilder::ApparitionBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/tanakai/browser_builder/apparition_builder.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config, spider:) ⇒ ApparitionBuilder

Returns a new instance of ApparitionBuilder.



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# File 'lib/tanakai/browser_builder/apparition_builder.rb', line 10

def initialize(config, spider:)
  @config = config
  @spider = spider
  @logger = spider.logger
end

Instance Attribute Details

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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# File 'lib/tanakai/browser_builder/apparition_builder.rb', line 8

def logger
  @logger
end

#spider ⇒ Object (readonly)

Returns the value of attribute spider.



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# File 'lib/tanakai/browser_builder/apparition_builder.rb', line 8

def spider
  @spider
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/tanakai/browser_builder/apparition_builder.rb', line 16

def build
  # Register driver
  Capybara.register_driver :apparition do |app|
    timeout = ENV.fetch('TIMEOUT', 30).to_i
    driver_options = { js_errors: false, timeout: timeout, debug: ENV['DEBUG'] }

    driver_options[:headless] = ENV.fetch("HEADLESS", "true") == "true"
    logger.debug "BrowserBuilder (apparition): enabled extensions"

    Capybara::Apparition::Driver.new(app, driver_options)
  end

  # Create browser instance (Capybara session)
  @browser = Capybara::Session.new(:apparition)
  @browser.spider = spider
  logger.debug "BrowserBuilder (apparition): created browser instance"

  # Headers
  if headers = @config[:headers].presence
    @browser.driver.headers = headers
    logger.debug "BrowserBuilder (apparition): enabled custom headers"
  end

  if user_agent = @config[:user_agent].presence
    user_agent_string = (user_agent.class == Proc ? user_agent.call : user_agent).strip

    @browser.driver.add_header("User-Agent", user_agent_string)
    logger.debug "BrowserBuilder (apparition): enabled custom user_agent"
  end

  # Cookies
  if cookies = @config[:cookies].presence
    cookies.each do |cookie|
      @browser.driver.set_cookie(cookie[:name], cookie[:value], cookie)
    end

    logger.debug "BrowserBuilder (apparition): enabled custom cookies"
  end

  @browser
end