Move logic for updating a user into a service class

app/controllers/users_controller.rb

@@ -43,28 +43,8 @@ class UsersController < ApplicationController
     user = User.where(username_lower: params[:username].downcase).first
     guardian.ensure_can_edit!(user)
     json_result(user, serializer: UserSerializer) do |u|
-
-      website = params[:website]
-      if website
-        website = "http://" + website unless website =~ /^http/
-      end
-
-      u.bio_raw = params[:bio_raw] || u.bio_raw
-      u.name = params[:name] || u.name
-      u.website = website || u.website
-      u.digest_after_days = params[:digest_after_days] || u.digest_after_days
-      u.auto_track_topics_after_msecs = params[:auto_track_topics_after_msecs].to_i if params[:auto_track_topics_after_msecs]
-      u.new_topic_duration_minutes = params[:new_topic_duration_minutes].to_i if params[:new_topic_duration_minutes]
-      u.title = params[:title] || u.title if guardian.can_grant_title?(u)
-
-      [:email_digests, :email_always, :email_direct, :email_private_messages,
-       :external_links_in_new_tab, :enable_quoting, :dynamic_favicon].each do |i|
-        if params[i].present?
-          u.send("#{i.to_s}=", params[i] == 'true')
-        end
-      end
-
-      u.save ? u : nil
+      updater = UserUpdater.new(user)
+      updater.update(params)
     end
   end