combine_pdf.rb

require 'capybara'
require 'capybara/dsl'
require 'selenium-webdriver'
require 'open-uri'
require 'combine_pdf'
require 'net/http'
require 'uri'


Capybara.default_driver = :selenium_chrome_headless # remove headless if want to see chrome
Capybara.app_host = 'http://127.0.0.1:3000'

module MyCapybara
  class Session
    include Capybara::DSL
      def build_cookie_string(cookie)
  			cookie_str = "#{cookie[:name]}=#{cookie[:value]}"
		  cookie.each do |key, value|
		      next if key == :name || key == :value
		    field_name = key.to_s.split('_').map(&:capitalize).join('-')

		    cookie_str += (case key
		                  when :expires
		                    "; #{field_name}=#{value&.to_time&.httpdate}" if value
		                  when :http_only, :secure
		                    "; #{field_name}" if value
		                  else
		                    "; #{field_name}=#{value}"
		                  end).to_s
		  end

		  cookie_str
		end

    def download_pdf_with_session(download_url, file_path)
      # Use Capybara's current session cookies to download the file
      cookies = page.driver.browser.manage.all_cookies

      uri = URI.parse(download_url)
      http = Net::HTTP.new(uri.host, uri.port)
      request = Net::HTTP::Get.new(uri.request_uri)

      request["Cookie"] = cookies.map { |cookie| build_cookie_string(cookie) }.join(";")

      headers = page.driver.browser.execute_script('return {...navigator.userAgent};')
      request['User-Agent'] = headers

      response = http.request(request)
      #binding.irb
      File.open(file_path, 'wb') do |file|
       file.write(response.body)
      end
    end

    def login_and_download_pdf(username, password, download_url, local_pdf_path)
      visit '/en/users/sign_in' # Adjust the path to your login page
      fill_in 'person_login_identity', with: username # Adjust the field ID
      fill_in 'person_password', with: password # Adjust the field ID
      click_button 'Sign in' # Adjust the button text or ID

      visit "http://127.0.0.1:3000/de/groups/14/people/600351"


      # Get the current page's HTML
      pdf_url = "http://127.0.0.1:3000/de/people/600351/membership.pdf"
      download_pdf_with_session(pdf_url, "downloaded_pdf.pdf")

      # Load the downloaded PDF and the local PDF
      pdf2 = CombinePDF.load("downloaded_pdf.pdf", allow_optional_content: true)
      pdf1 = CombinePDF.load(local_pdf_path, allow_optional_content: true)

      # Check if both PDFs have the same number of pages
      if pdf1.pages.count == pdf2.pages.count
        # Iterate over each page and overlay
        pdf1.pages.each_with_index do |page, index|
          page << pdf2.pages[index]
        end

        # Save the combined PDF
        pdf1.save("overlayed.pdf")
        puts "Overlay complete. Saved as 'overlayed.pdf'."
      else
        puts "The PDFs have a different number of pages and cannot be directly overlayed."
      end

      system("evince overlayed.pdf")
    end
  end
end

# Usage
session = MyCapybara::Session.new
session.login_and_download_pdf('your_username', 'your_password', 'http://127.0.0.1:3000/de/people/600351/membership.pdf', 'Mitgliederausweis Selfprint Vorschlag_13.05.24.pdf')