Promote en issue to an epic using quick action

- add issue_promote_service
- add system notes when an issue is promoted
- add support for promotion using quick actions
- display warning when promoting an issue

app/assets/javascripts/gfm_auto_complete.js

@@ -71,7 +71,7 @@ class GfmAutoComplete {
       displayTpl(value) {
         if (GfmAutoComplete.isLoading(value)) return GfmAutoComplete.Loading.template;
         // eslint-disable-next-line no-template-curly-in-string
-        let tpl = '<li><span class="name">/${name}</span>';
+        let tpl = '<li class="<%- warningClass %>"><span class="name">/${name}</span>';
         if (value.aliases.length > 0) {
           tpl += ' <small class="aliases">(or /<%- aliases.join(", /") %>)</small>';
         }
@@ -79,10 +79,15 @@ class GfmAutoComplete {
           tpl += ' <small class="params"><%- params.join(" ") %></small>';
         }
         if (value.description !== '') {
-          tpl += '<small class="description"><i><%- description %></i></small>';
+          tpl += '<small class="description"><i><%- description %> <%- warningText %></i></small>';
         }
         tpl += '</li>';
-        return _.template(tpl)(value);
+
+        return _.template(tpl)({
+          ...value,
+          warningClass: value.warning ? 'has-warning' : '',
+          warningText: value.warning ? `(${value.warning})` : '',
+        });
       },
       insertTpl(value) {
         // eslint-disable-next-line no-template-curly-in-string
@@ -111,6 +116,7 @@ class GfmAutoComplete {
               aliases: c.aliases,
               params: c.params,
               description: c.description,
+              warning: c.warning,
               search,
             };
           });

app/assets/stylesheets/framework/markdown_area.scss

@@ -223,6 +223,13 @@
     margin-bottom: 0;
   }
 
+  .has-warning {
+    .name,
+    .description {
+      color: $orange-700;
+    }
+  }
+
   .cur {
     .avatar {
       @include disableAllAnimation;
@@ -250,6 +257,11 @@
         small {
           color: inherit;
         }
+
+        &.has-warning {
+          color: $orange-700;
+          background-color: $orange-100;
+        }
       }
 
       div.avatar {

app/services/issuable/clone/base_service.rb

@@ -51,6 +51,8 @@ module Issuable
       end
 
       def group
+        return new_entity.group if new_entity.respond_to?(:group) && new_entity.group
+
         if new_entity.project&.group && current_user.can?(:read_group, new_entity.project.group)
           new_entity.project.group
         end

doc/user/group/epics/index.md

@@ -42,10 +42,10 @@ For each of the dates in the sidebar of an epic, you can choose to either:
 - Enter a fixed value.
 - Inherit a dynamic value called "From milestones".
 
-If you select "From milestones" for the start date, GitLab will automatically set the 
-date to be earliest start date across all milestones that are currently assigned 
+If you select "From milestones" for the start date, GitLab will automatically set the
+date to be earliest start date across all milestones that are currently assigned
 to the issues that are attached to the epic. Similarly, if you select "From milestones"
-for the due date, GitLab will set it to be the latest due date across all 
+for the due date, GitLab will set it to be the latest due date across all
 milestones that are currently assigned to those issues.
 
 These are dynamic dates in that if milestones are re-assigned to the issues, if the
@@ -91,6 +91,13 @@ link in the issue sidebar.
 
 ![containing epic](img/containing_epic.png)
 
+## Promoting an issue to an epic
+
+A user who has permissions to close an issue and create an epic in the parent group
+can promote an issue to an epic.
+The epic is created in the group the issue project belongs to (direct parent group).
+Only issues from projects that are in groups can be promoted.
+
 ## Searching for an epic from epics list page
 
 > Introduced in [GitLab Ultimate][ee] 10.5.

doc/user/project/quick_actions.md

@@ -84,3 +84,4 @@ The following quick actions are applicable for epics threads and description:
 | `/label ~label1 ~label2`   | Add label(s)                            |
 | `/unlabel ~label1 ~label2` | Remove all or specific label(s)         |
 | `/relabel ~label1 ~label2` | Replace label                           |
+| `/promote`                 | Promote an issue to an epic             |

ee/app/services/ee/quick_actions/interpret_service.rb

@@ -85,6 +85,19 @@ module EE
             ::MergeRequests::ApprovalService.new(issuable.project, current_user).execute(issuable)
           end
         end
+
+        desc 'Promote issue to an epic'
+        explanation 'Promote issue to an epic'
+        warning 'may expose confidential information'
+        condition do
+          issuable.is_a?(Issue) &&
+            issuable.persisted? &&
+            current_user.can?(:admin_issue, project) &&
+            current_user.can?(:create_epic, project.group)
+        end
+        command :promote do
+          Epics::IssuePromoteService.new(issuable.project, current_user).execute(issuable)
+        end
       end
 
       def extract_epic(params)

ee/app/services/ee/system_note_service.rb

@@ -69,6 +69,16 @@ module EE
       create_note(NoteSummary.new(object_epic, nil, user, body, action: action))
     end
 
+    def issue_promoted(noteable, noteable_ref, author)
+      direction = noteable.is_a?(Epic) ? :from : :to
+      project = noteable.project
+
+      cross_reference = noteable_ref.to_reference(project || noteable.group)
+      body = "promoted #{direction} #{noteable_ref.class.to_s.downcase} #{cross_reference}"
+
+      create_note(NoteSummary.new(noteable, project, author, body, action: 'moved'))
+    end
+
     def issue_on_epic(issue, epic, user, type)
       return unless validate_epic_issue_action_type(type)
 

ee/app/services/epics/create_service.rb

@@ -16,7 +16,7 @@ module Epics
     end
 
     def whitelisted_epic_params
-      params.slice(:title, :description, :start_date, :end_date)
+      params.slice(:title, :description, :start_date, :end_date, :milestone, :label_ids)
     end
   end
 end

ee/app/services/epics/issue_promote_service.rb

+# frozen_string_literal: true
+
+module Epics
+  class IssuePromoteService < Issuable::Clone::BaseService
+    PromoteError = Class.new(StandardError)
+
+    def execute(issue)
+      @group = issue.project.group
+
+      unless @group
+        raise PromoteError, 'Cannot promote issue because it does not belong to a group!'
+      end
+
+      unless current_user.can?(:admin_issue, issue) && current_user.can?(:create_epic, @group)
+        raise PromoteError, 'Cannot promote issue due to insufficient permissions!'
+      end
+
+      super
+
+      new_entity
+    end
+
+    private
+
+    def create_new_entity
+      @new_entity = Epics::CreateService.new(@group, current_user, params).execute
+    end
+
+    def params
+      {
+        title: original_entity.title
+      }
+    end
+
+    def add_note_from
+      SystemNoteService.issue_promoted(new_entity, original_entity, current_user)
+    end
+
+    def add_note_to
+      SystemNoteService.issue_promoted(original_entity, new_entity, current_user)
+    end
+  end
+end

ee/changelogs/unreleased/3777-promote-to-epic.yml

+---
+title: Promote an Issue to an Epic using quick action
+merge_request: 8051
+author:
+type: added

ee/spec/features/epics/issue_promotion_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'Issue promotion', :js do
+  include Spec::Support::Helpers::Features::NotesHelpers
+
+  let(:group) { create(:group) }
+  let(:project) { create(:project, :public, group: group) }
+  let(:issue) { create(:issue, project: project) }
+  let(:user) { create(:user) }
+
+  before do
+    sign_in(user)
+  end
+
+  context 'when epics feature is disabled' do
+    it 'does not promote the issue' do
+      visit project_issue_path(project, issue)
+
+      expect(page).not_to have_content 'Commands applied'
+
+      expect(issue.reload).to be_open
+      expect(Epic.count).to be_zero
+    end
+  end
+
+  context 'when epics feature is enabled' do
+    before do
+      stub_licensed_features(epics: true)
+    end
+
+    context 'when current user does not have permissions to promote an issue' do
+      before do
+        visit project_issue_path(project, issue)
+      end
+
+      it 'does not promote the issue' do
+        expect(page).not_to have_content 'Commands applied'
+
+        expect(issue.reload).to be_open
+        expect(Epic.count).to be_zero
+      end
+    end
+
+    context 'when current user can promote an issue' do
+      before do
+        group.add_developer(user)
+        visit project_issue_path(project, issue)
+      end
+
+      it 'promotes the issue' do
+        add_note('/promote')
+
+        wait_for_requests
+
+        epic = Epic.last
+
+        expect(issue.reload).to be_closed
+        expect(epic.title).to eq(issue.title)
+        expect(epic.description).to eq(issue.description)
+        expect(epic.author).to eq(user)
+      end
+    end
+  end
+end

ee/spec/services/ee/issuable/clone/attributes_rewriter_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Issuable::Clone::AttributesRewriter do
+  let(:user) { create(:user) }
+  let(:group) { create(:group) }
+  let(:project) { create(:project, :public, group: group) }
+  let(:original_issue) { create(:issue, project: project) }
+
+  context 'when a new object is a group entity' do
+    let(:new_epic) { create(:epic, group: group) }
+
+    subject { described_class.new(user, original_issue, new_epic) }
+
+    context 'setting labels' do
+      let!(:project_label1) { create(:label, title: 'label1', project: project) }
+      let!(:project_label2) { create(:label, title: 'label2', project: project) }
+      let!(:group_label1) { create(:group_label, title: 'group_label', group: group) }
+      let!(:group_label2) { create(:group_label, title: 'label2', group: group) }
+
+      it 'keeps group labels and merges project labels where possible' do
+        original_issue.update(labels: [project_label1, project_label2, group_label1])
+
+        subject.execute
+
+        expect(new_epic.reload.labels).to match_array([group_label1, group_label2])
+      end
+    end
+
+    context 'setting milestones' do
+      it 'sets milestone to nil when old issue milestone is not a group milestone' do
+        milestone = create(:milestone, title: 'milestone', project: project)
+        original_issue.update(milestone: milestone)
+
+        subject.execute
+
+        expect(new_epic.reload.milestone).to be_nil
+      end
+
+      it 'copies the milestone when old issue milestone is a group milestone' do
+        milestone = create(:milestone, title: 'milestone', group: group)
+        original_issue.update(milestone: milestone)
+
+        subject.execute
+
+        expect(new_epic.reload.milestone).to eq(milestone)
+      end
+    end
+  end
+end

ee/spec/services/epics/create_service_spec.rb

@@ -8,7 +8,7 @@ describe Epics::CreateService do
   subject { described_class.new(group, user, params).execute }
 
   describe '#execute' do
-    it 'creates one issue correctly' do
+    it 'creates one epic correctly' do
       allow(NewEpicWorker).to receive(:perform_async)
 
       expect { subject }.to change { Epic.count }.from(0).to(1)

ee/spec/services/epics/issue_promote_service_spec.rb

+# frozen_string_literal: true
+require 'spec_helper'
+
+describe Epics::IssuePromoteService do
+  let(:user) { create(:user) }
+  let(:group) { create(:group) }
+  let(:project) { create(:project, group: group) }
+  let(:label1) { create(:group_label, group: group) }
+  let(:label2) { create(:label, project: project) }
+  let(:milestone) { create(:milestone, group: group) }
+  let(:description) { 'simple description' }
+  let(:issue) do
+    create(:issue, project: project, labels: [label1, label2],
+                   milestone: milestone, description: description)
+  end
+
+  subject { described_class.new(issue.project, user) }
+
+  def epic
+    Epic.last
+  end
+
+  describe '#execute' do
+    context 'when epics are not enabled' do
+      it 'raises a permission error' do
+        group.add_developer(user)
+
+        expect { subject.execute(issue) }
+          .to raise_error(Epics::IssuePromoteService::PromoteError, /permissions/)
+      end
+    end
+
+    context 'when epics are enabled' do
+      before do
+        stub_licensed_features(epics: true)
+      end
+
+      context 'when a user can not promote the issue' do
+        it 'raises a permission error' do
+          expect { subject.execute(issue) }
+            .to raise_error(Epics::IssuePromoteService::PromoteError, /permissions/)
+        end
+      end
+
+      context 'when a user can promote the issue' do
+        before do
+          group.add_developer(user)
+        end
+
+        context 'when an issue does not belong to a group' do
+          it 'raises an error' do
+            other_issue = create(:issue, project: create(:project))
+
+            expect { subject.execute(other_issue) }
+            .to raise_error(Epics::IssuePromoteService::PromoteError, /group/)
+          end
+        end
+
+        context 'when issue is promoted' do
+          before do
+            subject.execute(issue)
+          end
+
+          it 'creates a new epic with correct attributes' do
+            expect(epic.title).to eq(issue.title)
+            expect(epic.description).to eq(issue.description)
+            expect(epic.author).to eq(user)
+            expect(epic.group).to eq(group)
+            expect(epic.milestone).to eq(milestone)
+          end
+
+          it 'copies group labels assigned to the issue' do
+            expect(Epic.last.labels).to eq([label1])
+          end
+
+          it 'creates a system note on the issue' do
+            expect(issue.notes.last.note).to eq("promoted to epic #{epic.to_reference(project)}")
+          end
+
+          it 'creates a system note on the epic' do
+            expect(epic.notes.last.note).to eq("promoted from issue #{issue.to_reference(group)}")
+          end
+
+          it 'closes the original issue' do
+            expect(issue).to be_closed
+          end
+        end
+      end
+    end
+  end
+end

ee/spec/services/quick_actions/interpret_service_spec.rb

@@ -149,6 +149,56 @@ describe QuickActions::InterpretService do
       end
     end
 
+    context 'promote command' do
+      let(:content) { "/promote" }
+
+      context 'when epics are enabled' do
+        context 'when a user does not have permissions to promote an issue' do
+          it 'does not promote an issue to an epic' do
+            expect { service.execute(content, issue) }.not_to change { Epic.count }
+          end
+        end
+
+        context 'when a user has permissions to promote an issue' do
+          before do
+            group.add_developer(current_user)
+          end
+
+          context 'when epics are enabled' do
+            before do
+              stub_licensed_features(epics: true)
+            end
+
+            it 'promotes an issue to an epic' do
+              expect { service.execute(content, issue) }.to change { Epic.count }.by(1)
+            end
+
+            context 'when an issue belongs to a project without group' do
+              let(:user_project) { create(:project) }
+              let(:issue)        { create(:issue, project: user_project) }
+
+              before do
+                user_project.add_developer(user)
+              end
+
+              it 'does not promote an issue to an epic' do
+                expect { service.execute(content, issue) }
+                  .to raise_error(Epics::IssuePromoteService::PromoteError)
+              end
+            end
+          end
+        end
+      end
+
+      context 'when epics are disabled' do
+        it 'does not promote an issue to an epic' do
+          group.add_developer(current_user)
+
+          expect { service.execute(content, issue) }.not_to change { Epic.count }
+        end
+      end
+    end
+
     context 'remove_epic command' do
       let(:epic) { create(:epic, group: group)}
       let(:content) { "/remove_epic #{epic.to_reference(project)}" }

ee/spec/services/system_note_service_spec.rb

@@ -10,7 +10,7 @@ describe SystemNoteService do
   set(:author)   { create(:user) }
   let(:noteable) { create(:issue, project: project) }
   let(:issue)    { noteable }
-  let(:epic)     { create(:epic) }
+  let(:epic)     { create(:epic, group: group) }
 
   shared_examples_for 'a system note' do
     let(:expected_noteable) { noteable }
@@ -96,5 +96,32 @@ describe SystemNoteService do
         expect(subject.note).to eq 'removed the start date'
       end
     end
+
+    context '.issue_promoted' do
+      context 'note on the epic' do
+        subject { described_class.issue_promoted(epic, issue, author) }
+
+        it_behaves_like 'a system note' do
+          let(:action) { 'moved' }
+          let(:expected_noteable) { epic }
+        end
+
+        it 'sets the note text' do
+          expect(subject.note).to eq("promoted from issue #{issue.to_reference(group)}")
+        end
+      end
+
+      context 'note on the issue' do
+        subject { described_class.issue_promoted(issue, epic, author) }
+
+        it_behaves_like 'a system note' do
+          let(:action) { 'moved' }
+        end
+
+        it 'sets the note text' do
+          expect(subject.note).to eq("promoted to epic #{epic.to_reference(project)}")
+        end
+      end
+    end
   end
 end