Refactor first_or_create_for_auth & its usage

Conflicts:
	app/controllers/users/omniauth_callbacks_controller.rb

Refactors first_or_initialize_for_oauth

app/controllers/users/omniauth_callbacks_controller.rb

@@ -1,23 +1,15 @@
 class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
 
-  def self.provides_callback_for(provider)
-    class_eval %Q{
-      def #{provider}
-        @user = User.find_for_oauth(env["omniauth.auth"], current_user)
-
-        if @user.persisted?
-          sign_in_and_redirect @user, event: :authentication
-          set_flash_message(:notice, :success, kind: "#{provider}".capitalize) if is_navigational_format?
-        else
-          session["devise.#{provider}_data"] = env["omniauth.auth"]
-          redirect_to new_user_registration_url
-        end
-      end
-    }
+  def twitter
+    sign_in_with :twitter
   end
 
-  [:twitter, :facebook, :google_oauth2].each do |provider|
-    provides_callback_for provider
+  def facebook
+    sign_in_with :facebook
+  end
+
+  def google_oauth2
+    sign_in_with :google_oauth2
   end
 
   def after_sign_in_path_for(resource)
@@ -28,4 +20,22 @@ class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
     end
   end
 
+  private
+
+    def sign_in_with(provider)
+      auth = env["omniauth.auth"]
+
+      identity = Identity.first_or_create_from_oauth(auth)
+      @user = current_user || identity.user || User.first_or_initialize_for_oauth(auth)
+
+      if @user.save
+        identity.update(user: @user)
+        sign_in_and_redirect @user, event: :authentication
+        set_flash_message(:notice, :success, kind: "#{provider}".capitalize) if is_navigational_format?
+      else
+        session["devise.#{provider}_data"] = env["omniauth.auth"]
+        redirect_to new_user_registration_url
+      end
+    end
+
 end

app/models/user.rb

@@ -52,39 +52,21 @@ class User < ActiveRecord::Base
 
   before_validation :clean_document_number
 
-  def self.find_for_oauth(auth, current_user)
-    identity = Identity.first_or_create_from_oauth(auth)
-
-    # If a current is provided it always overrides the existing user
-    # to prevent the identity being locked with accidentally created accounts.
-    # Note that this may leave zombie accounts (with no associated identity) which
-    # can be cleaned up at a later date.
-    user = current_user || identity.user || first_or_create_for_oauth(auth)
-
-    identity.update(user: user)
-    user
-  end
-
   # Get the existing user by email if the provider gives us a verified email.
-  # If no verified email was provided we assign a temporary email and ask the
-  # user to verify it on the next step via RegistrationsController.finish_signup
-  def self.first_or_create_for_oauth(auth)
-    email = auth.info.email if auth.info.verified || auth.info.verified_email
-    user  = User.where(email: email).first if email
 
-    # Create the user if it's a new registration
-    if user.nil?
-      user = User.new(
-        username: auth.info.nickname || auth.extra.raw_info.name.parameterize('-') || auth.uid,
-        email: email ? email : "#{OMNIAUTH_EMAIL_PREFIX}-#{auth.uid}-#{auth.provider}.com",
-        password: Devise.friendly_token[0,20],
-        terms_of_service: '1'
-      )
-      user.skip_confirmation!
-      user.save!
+  def self.first_or_initialize_for_oauth(auth)
+    email, user = nil, nil
+    if auth.info.verified || auth.info.verified_email
+      email = auth.info.email
+      user = User.where(email: email).first if email
     end
-
-    user
+    user || User.new(
+      username: auth.info.nickname || auth.extra.raw_info.name.parameterize('-') || auth.uid,
+      email: email || "#{OMNIAUTH_EMAIL_PREFIX}-#{auth.uid}-#{auth.provider}.com",
+      password: Devise.friendly_token[0,20],
+      terms_of_service: '1',
+      confirmed_at: Time.now
+    )
   end
 
   def name