Reuse existing issue services when moving issue

app/services/issues/close_service.rb

 module Issues
   class CloseService < Issues::BaseService
-    def execute(issue, commit = nil)
+    def execute(issue, commit = nil, notifications: true, system_note: true)
       if project.jira_tracker? && project.jira_service.active
         project.jira_service.execute(commit, issue)
         todo_service.close_issue(issue, current_user)
@@ -9,8 +9,8 @@ module Issues
 
       if project.default_issues_tracker? && issue.close
         event_service.close_issue(issue, current_user)
-        create_note(issue, commit)
-        notification_service.close_issue(issue, current_user)
+        create_note(issue, commit) if system_note
+        notification_service.close_issue(issue, current_user) if notifications
         todo_service.close_issue(issue, current_user)
         execute_hooks(issue, 'close')
       end

app/services/issues/create_service.rb

 module Issues
   class CreateService < Issues::BaseService
-    def execute
+    def execute(set_author: true)
       filter_params
       label_params = params[:label_ids]
       issue = project.issues.new(params.except(:label_ids))
-      issue.author = current_user
+      issue.author = current_user if set_author
 
       if issue.save
         issue.update_attributes(label_ids: label_params)

app/services/issues/move_service.rb

@@ -4,14 +4,20 @@ module Issues
       super(project, current_user, params)
 
       @issue_old = issue
-      @issue_new = issue.dup
+      @issue_new = nil
       @project_old = @project
-      @project_new = Project.find(new_project_id)
+
+      if new_project_id
+        @project_new = Project.find(new_project_id)
+      end
     end
 
     def execute
       return unless move?
 
+      # Using trasaction because of a high footprint on
+      # rewriting notes (unfolding references)
+      #
       ActiveRecord::Base.transaction do
         # New issue tasks
         #
@@ -25,10 +31,7 @@ module Issues
         close_old_issue
       end
 
-      # Notifications and hooks
-      #
-      # notify_participants
-      # trigger_hooks_and_events
+      notify_participants
 
       @issue_new
     end
@@ -45,20 +48,14 @@ module Issues
     end
 
     def create_new_issue
-      @issue_new.project = @project_new
-
-      # Reset internal ID, will be regenerated before save
-      #
-      @issue_new.iid = nil
+      new_params = { id: nil, iid: nil, milestone: nil, label_ids: [],
+                     project: @project_new, author: @issue_old.author,
+                     description: rewrite_references(@issue_old) }
 
-      # Reset labels and milestones, as those are not valid in context
-      # of a new project
-      #
-      @issue_new.labels = []
-      @issue_new.milestone = nil
+      create_service = CreateService.new(@project_new, @current_user,
+                                         params.merge(new_params))
 
-      @issue_new.description = rewrite_references(@issue_old)
-      @issue_new.save!
+      @issue_new = create_service.execute(set_author: false)
     end
 
     def rewrite_notes
@@ -72,7 +69,8 @@ module Issues
     end
 
     def close_old_issue
-      @issue_old.update(state: :closed)
+      close_service = CloseService.new(@project_new, @current_user)
+      close_service.execute(@issue_old, notifications: false, system_note: false)
     end
 
     def add_moved_from_note
@@ -93,30 +91,14 @@ module Issues
 
     def noteable_content(noteable)
       case noteable
-      when Issue
-        noteable.description
-      when Note
-        noteable.note
+      when Issue then noteable.description
+      when Note then noteable.note
       else
-        raise 'Unexpected noteable while moving an issue'
+        raise 'Unexpected noteable while moving an issue!'
       end
     end
 
-    def trigger_hooks_and_events
-      event_service.close_issue(@issue_old, @current_user)
-      event_service.open_issue(@issue_new, @current_user)
-
-      @issue_new.create_cross_references!(@current_user)
-
-      execute_hooks(@issue_old, 'close')
-      execute_hooks(@issue_new, 'open')
-    end
-
     def notify_participants
-      todo_service.close_issue(@issue_old, @current_user)
-      todo_service.open_issue(@issue_new, @current_user)
-
-      notification_service.issue_moved(@issue_old, @issue_new, @current_user)
     end
   end
 end

app/services/notification_service.rb

@@ -236,14 +236,6 @@ class NotificationService
     end
   end
 
-  def issue_moved(issue, old_project, new_project, current_user)
-    recipients = build_recipients(issue, old_project, current_user)
-
-    recipients.each do |recipient|
-      mailer.send('issue_moved', recipient.id, issue.id, current_user.id).deliver_later
-    end
-  end
-
   protected
 
   # Get project users with WATCH notification level

spec/services/issues/move_service_spec.rb

@@ -76,7 +76,7 @@ describe Issues::MoveService, services: true do
 
         it 'persists all changes' do
           expect(old_issue.changed?).to be false
-          expect(new_issue.persisted?).to be true
+          expect(new_issue.changed?).to be false
         end
 
         it 'preserves author' do