class OmniauthCallbacksController < Devise::OmniauthCallbacksController
  include Spree::CurrentOrder
  include SpreeBase
  helper :users, 'spree/base'

  SpreeSocial::OAUTH_PROVIDERS.each do |provider|
    method_name = (provider[1]).to_sym
    send :define_method, method_name do 
      social_setup(provider[1].capitalize)
    end
  end
  
  #def facebook
  #  social_setups("Facebook")
  #end
  #
  #def twitter
  #  social_setups("Twitter")
  #end
  #
  #def github
  #  social_setups("Github")
  #end

  private

  def social_setup(provider)
    omniauth = request.env["omniauth.auth"]

    if request.env["omniauth.error"].present?
      flash[:error] = t("devise.omniauth_callbacks.failure", :kind => provider, :reason => "user was not valid")
      redirect_back_or_default(root_url)
      return
    end

    existing_auth = UserAuthentication.where(:provider => omniauth['provider'], :uid => omniauth['uid'].to_s).first

    #signing back in from a social source
    if existing_auth
      user = existing_auth.user
    else # adding a social source
      user = current_user
    end

    user ||= User.anonymous!

    user.associate_auth(omniauth) unless existing_auth

    if current_order
      current_order.associate_user!(user)
      session[:guest_token] = nil
    end

    if user.anonymous?
      session[:user_access_token] = user.token #set user access token so we can edit this user again later

      flash.now[:notice] = t("one_more_step", :kind => omniauth['provider'].capitalize)
      render(:template => "user_registrations/social_edit", :locals => {:user => user, :omniauth => omniauth})
    elsif current_user
      flash[:error] = t("attach_error", :kind => omniauth['provider'].capitalize) if existing_auth && (existing_auth.user != current_user)
      redirect_back_or_default(account_url)
    else
      sign_in_and_redirect(user, :event => :authentication)
    end
  end

end