Save Facebook group photos to Downloads folder using Firefox and Selenium WebDriver

save_facebook_group_photos.rb

# This script will download all the photos owned by a group from Facebook.

require 'json'
require 'selenium-webdriver'

if ARGV.length != 3
  print "please provide all the command arguments: {facebook group id} {first photo to download, often '1'} {last photo to download}"
  exit 1
end

group_id = ARGV[0]
first_photo_to_download = ARGV[1]
last_photo_to_download = ARGV[2]
firefox_profile = Dir.glob(ENV.AppData + '\Mozilla\Profiles\*.default')


# Use my profile
options = Selenium::WebDriver::Firefox::Options.new
profile = Selenium::WebDriver::Firefox::Profile.new firefox_profile
profile['browser.helperApps.neverAsk.saveToDisk'] = 'image/jpeg;'
options.profile = profile

@driver = Selenium::WebDriver.for :firefox, :options => options
@driver.manage.timeouts.implicit_wait = 30

def download_image
  sleep 0.2
  @driver.find_element(:xpath, "//a[./*[text()='Options']]").click
  sleep 0.2
  @driver.find_element(:xpath, "(//a[.//*[text()='Download']])[last()]").click
  # @driver.find_element(:xpath, "//a[.//*[text()='Close']]").click
end

@driver.navigate.to "https://www.facebook.com/groups/#{group_id}/photos/"
@driver.find_element(:xpath, "(//div[@id='group_photoset']/table/tbody//a)[#{first_photo_to_download}]").click

(first_photo_to_download .. last_photo_to_download).each do
  download_image
  @driver.find_element(:css, '[title="Next"]').click
end

@driver.quit