A much needed refactoring of the create action in my authentication controller, refactored code on top, original on bottom

authentication.rb

class AuthenticationsController < ApplicationController
  def create
    omniauth = auth_hash
    authentication = Authentication.find_by_provider_and_uid(omniauth['provider'], omniauth['uid'])

    if authentication
      sign_in(authentication.user)
      redirect_to root_url, notice: "Signed in!"
    else
      sign_in(User.create_from_omniauth(omniauth)) if current_user.blank?
      current_user.create_authentication(omniauth)

      if current_user.status == 'active'
        redirect_to current_user, notice: "#{omniauth['provider']} has been added!"
      elsif current_user.status == 'personal'
        redirect_to '/user_steps/social', notice: "#{omniauth['provider']} has been added!"
      else
        redirect_to user_steps_path
      end  
    end
  end
...
end

authentications.rb

class AuthenticationsController < ApplicationController
  def create
    omniauth = request.env['omniauth.auth']
    authentication = Authentication.find_by_provider_and_uid(omniauth['provider'], omniauth['uid'])

    if authentication
      sign_in(authentication.user)
      redirect_to current_user, notice: "Signed in!"
    elsif current_user  
      current_user.create_authentication(omniauth)
      current_user.import_resume(omniauth)
      
      if current_user.status == 'active'
        redirect_to current_user, notice: "#{omniauth['provider']} has been added!"
      else
        redirect_to '/user_steps/social', notice: "#{omniauth['provider']} has been added!"
      end
    else
      user = User.create_with_omniauth(omniauth)

      if user.save
  	user.create_authentication(omniauth)
        user.import_resume(omniauth)
        sign_in(user)
        redirect_to user_steps_path
      else
  	redirect_to root_url, notice: "There was an error.."
      end
    end
  end
...
end