gistfile1.rb

def android_login
  token = params['token']
  uri = URI.parse("https://www.googleapis.com")
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  http.verify_mode = OpenSSL::SSL::VERIFY_NONE
  path = "/oauth2/v1/tokeninfo?access_token=#{token}"
  resp = http.get(path)
  data = JSON.parse(resp.body)
  if resp.code == "200" && user = User.find_or_create_by_email(data['email'])
    sign_in(:user, user)
    session[:user_id] = user.id
  end
  redirect_to :root
end