Class: Wovnrb::Interceptor

Inherits:
Object
  • Object
show all
Defined in:
lib/wovnrb.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, opts = {}) ⇒ Interceptor

Returns a new instance of Interceptor.



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# File 'lib/wovnrb.rb', line 18

def initialize(app, opts = {})
  @app = app
  @store = Store.instance
  opts = opts.transform_keys(&:to_s)
  @store.update_settings(opts)
  @url_lang_switcher = Wovnrb::UrlLanguageSwitcher.new(@store)
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/wovnrb.rb', line 26

def call(env)
  # disabled by previous Rack middleware
  request = Rack::Request.new(env)
  return @app.call(env) if request.params['wovn_disable'] == true

  @store.settings.clear_dynamic_settings!
  return @app.call(env) unless Store.instance.valid_settings?

  @env = env
  headers = Headers.new(env, @store.settings, @url_lang_switcher)
  default_lang = @store.settings['default_lang']
  return @app.call(env) if @store.settings['test_mode'] && @store.settings['test_url'] != headers.url

  cookie_lang = request.cookies['wovn_selected_lang']
  request_lang = headers.lang_code
  is_get_request = request.get?

  if @store.settings['use_cookie_lang'] && cookie_lang.present? && request_lang != cookie_lang && request_lang == @store.default_lang && is_get_request
    redirect_headers = headers.redirect(cookie_lang)
    return [302, redirect_headers, ['']]
  end

  # redirect if the path is set to the default language (for SEO purposes)
  if explicit_default_lang?(headers) && is_get_request
    redirect_headers = headers.redirect(default_lang)
    return [307, redirect_headers, ['']]
  end

  # if path containing language code is ignored, do nothing
  if headers.lang_code != default_lang && ignore_path?(headers.unmasked_pathname_without_trailing_slash)
    status, res_headers, body = @app.call(env)

    return output(headers, status, res_headers, body)
  end
  # pass to application
  status, res_headers, body = @app.call(headers.request_out)

  # disabled by next Rack middleware
  return output(headers, status, res_headers, body) unless res_headers['Content-Type']&.include?('html')

  return output(headers, status, res_headers, body) if request.params['wovn_disable'] == true

  @store.settings.update_dynamic_settings!(request.params)
  return output(headers, status, res_headers, body) if ignore_path?(headers.pathname)

  body = switch_lang(headers, body) unless /^1|302/.match?(status.to_s)

  content_length = 0
  body.each { |b| content_length += b.respond_to?(:bytesize) ? b.bytesize : 0 }
  res_headers['Content-Length'] = content_length.to_s

  output(headers, status, res_headers, body)
end

#switch_lang(headers, body) ⇒ Object 



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# File 'lib/wovnrb.rb', line 80

def switch_lang(headers, body)
  translated_body = []

  # Must use `.each` for to support multiple-chunks in Sinatra
  string_body = ''
  body.each { |chunk| string_body += chunk }
  html_body = Helpers::NokogumboHelper.parse_html(string_body)

  if !wovn_ignored?(html_body) && !amp_page?(html_body)

    html_converter = HtmlConverter.new(html_body, @store, headers, @url_lang_switcher)

    if needs_api?(html_body, headers)
      converted_html, marker = html_converter.build_api_compatible_html
      translated_content = ApiTranslator.new(@store, headers, WovnLogger.uuid).translate(converted_html)
      translated_body.push(marker.revert(translated_content))
    else
      string_body = html_converter.build if html_body.html?
      translated_body.push(string_body)
    end
  else
    translated_body.push(string_body)
  end

  body.close if body.respond_to?(:close)
  translated_body
end