Notes can be used to create a new issue

app/controllers/projects/notes_controller.rb

@@ -20,7 +20,11 @@ class Projects::NotesController < Projects::ApplicationController
   end
   def create
-    @note = Notes::CreateService.new(project, current_user, note_params).execute
+    @note = if params[:new_issue]
+              Notes::CreateService.new(project, current_user, note_params).new_issue
+            else
+              Notes::CreateService.new(project, current_user, note_params).execute
+            end
     respond_to do |format|
       format.json { render json: note_json(@note) }

app/services/notes/create_service.rb

@@ -13,5 +13,24 @@ module Notes
       note
     end
+
+    # An issue can be create from a line comment. This issue has the specified format:
+    #
+    #
+    # ## Title here
+    # ---
+    # description should be here
+    #
+    def new_issue
+      lines       = params[:note].lines
+      title       = lines[0].gsub(/\A.{3}\W*/, '').rstrip
+      description = lines[2..-1].join('\n').strip # lines[1] == '---' and is thus discarded
+
+      issue = Issues::CreateService.new(project, current_user, title: title, description: description).execute
+      return issue unless issue.valid?
+
+      params[:note] = "#{issue.to_reference} was created from this line comment."
+      execute
+    end
   end
 end

db/schema.rb

@@ -100,6 +100,19 @@ ActiveRecord::Schema.define(version: 20160530150109) do
   add_index "audit_events", ["entity_id", "entity_type"], name: "index_audit_events_on_entity_id_and_entity_type", using: :btree
   add_index "audit_events", ["type"], name: "index_audit_events_on_type", using: :btree
+  create_table "award_emoji", force: :cascade do |t|
+    t.string   "name"
+    t.integer  "user_id"
+    t.integer  "awardable_id"
+    t.string   "awardable_type"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  add_index "award_emoji", ["awardable_id"], name: "index_award_emoji_on_awardable_id", using: :btree
+  add_index "award_emoji", ["awardable_type"], name: "index_award_emoji_on_awardable_type", using: :btree
+  add_index "award_emoji", ["user_id"], name: "index_award_emoji_on_user_id", using: :btree
+
   create_table "broadcast_messages", force: :cascade do |t|
     t.text     "message",    null: false
     t.datetime "starts_at"

spec/services/notes/create_service_spec.rb

@@ -14,7 +14,7 @@ describe Notes::CreateService, services: true do
           noteable_type: 'Issue',
           noteable_id: issue.id
         }
-        
+
         @note = Notes::CreateService.new(project, user, opts).execute
       end
@@ -23,6 +23,38 @@ describe Notes::CreateService, services: true do
     end
   end
+  describe "#new_issue" do
+    let(:content) do
+      <<-NOTE
+      My new title
+      ---
+      This is my body
+      NOTE
+    end
+    let(:merge_request) { create(:merge_request) }
+    let(:params) { {note: content, noteable_type: "MergeRequest", noteable_id: merge_request.id} }
+
+    before do
+      project.team << [user, :master]
+    end
+
+    it "creates a new issue" do
+      expect { Notes::CreateService.new(project, user, params).new_issue }.to change { Issue.count }.by(1)
+    end
+
+    it 'sets a bota a note and a reference' do
+      expect { Notes::CreateService.new(project, user, params).new_issue }.to change { Note.count }.by(2)
+    end
+
+    it "parses the note" do
+      Notes::CreateService.new(project, user, params).new_issue
+      new_issue = Issue.last
+      
+      expect(new_issue.title).to eq 'My new title'
+      expect(new_issue.description).to eq 'This is my body'
+    end
+  end
+
   describe "award emoji" do
     before do
       project.team << [user, :master]