class Email2Face

# File lib/email2face.rb, line 80
def self.configure_capybara
  Capybara.app = self
  Capybara.javascript_driver = :webkit
  Capybara.current_driver = :webkit
  Capybara.run_server = false
end

# File lib/email2face.rb, line 30
def self.face(email)
  if @@username == FAKE_FACEBOOK_USERNAME
    no_login_details(email)
  end
  html = face_html(email)
  get_face(html)
end

# File lib/email2face.rb, line 42
def self.face_html(email)
  Email2Face.configure_capybara
  Headless.ly do
    browser = Capybara::Session.new(:webkit, browser)
    #self.driver.header("User-Agent", CHROME_USER_AGENT)
    browser.visit  "https://www.facebook.com/login.php"
    browser.within "#loginform" do
      browser.fill_in "email", :with => self.username
      browser.fill_in "pass",  :with => self.password
      browser.click_button "Log In"
    end
    if browser.driver.cookies["c_user", ".facebook.com"]
      url = "https://www.facebook.com/search/results.php?o=2048&init=s%3Aemail&q=#{ email.sub("@", "%40") }"
      browser.visit url
      return browser.html
    else
      login_failed!
    end
  end
end

# File lib/email2face.rb, line 67
def self.get_face(html)
  parser    = Nokogiri::HTML(html)
  element   = parser.xpath("//*[@id='pagelet_search_results_objects']/div/div/div/div/div[2]/div[1]/a") || parser.xpath('//*[@id="js_0"]') || parser.xpath("//*[@id=\"js_1\"]")
  href      = element.attribute("href")
  uri       = URI.parse(href)
  uri.host  = "graph.facebook.com"
  uri.path  = uri.path + "/picture"
  raise if uri.path.include?("profile.php") || href == nil
  uri.to_s
rescue
  "I couldn't find a face for that email :(. It's also possible that Facebook has asked for a security check on that account, which means that you should sign in and perform the security check."
end

# File lib/email2face.rb, line 63
def self.login_failed!
  "Couldn't login to Facebook. Maybe you misspelled your username or password?"
end

# File lib/email2face.rb, line 38
def self.no_login_details(email)
  puts "You didn't specify a Facebook account, so I set you up with the default fake Facebook account. It might not work for long."
end

# File lib/email2face.rb, line 22
def self.password
  @@password
end

# File lib/email2face.rb, line 26
def self.password=(password)
  @@password = password
end

# File lib/email2face.rb, line 14
def self.username
  @@username
end

# File lib/email2face.rb, line 18
def self.username=(username)
  @@username = username
end