fb.rb

# encoding: utf-8
class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
  before_filter :authenticate_user!, only: :stripe_connect

  def facebook
    auth = request.env['omniauth.auth']
    @user = User.where(auth.slice('provider', 'uid')).first

    if @user.present?
      sign_in(@user, event: :authentication)
      redirect_to session.has_key?(:return_url) ? session.delete(:return_url) : root_path
    elsif auth['info']['email'].present? and email_available?(auth['info']['email'])
      @user = User.create_from_omniauth_facebook auth
      #sign_in_and_redirect @user, event: :authentication # this will throw if @user is not activated
      set_flash_message(:notice, :success, kind: 'Facebook') if is_navigational_format?
      sign_in(@user, event: :authentication)
      redirect_to session.has_key?(:return_url) ? session.delete(:return_url) : root_path
    else
      sign_up_data = {
        provider:   auth['provider'],
        uid:        auth['uid'],
        image:      auth['info']['image'],
        first_name: auth['info']['first_name'],
        last_name:  auth['info']['last_name'],
        gender:     auth['extra']['raw_info']['gender']
      }
      session[:sign_up_data] = sign_up_data
      redirect_to request.referer.present? ? request.referer : root_path
    end
  end

end