Move note emoji-award implementation to note model (feature envy)

app/models/note.rb

@@ -72,6 +72,7 @@ class Note < ActiveRecord::Base
 
   serialize :st_diff
   before_create :set_diff, if: ->(n) { n.line_code.present? }
+  before_validation :set_award!
 
   class << self
     def discussions_from_notes(notes)
@@ -349,4 +350,36 @@ class Note < ActiveRecord::Base
   def editable?
     !system?
   end
+
+  # Checks if note is an award added from an issue comment.
+  #
+  # If note is an award, this method sets is_award to true,
+  # and changes note content to award-emoji name.
+  #
+  # Awards are only supported for issue comments.
+  #
+  # Method is executed as a before_validation callback.
+  #
+  def set_award!
+    return unless issue_comment? && contains_emoji_only?
+
+    self.is_award = true
+    self.note = award_emoji_name
+  end
+
+  private
+
+  def issue_comment?
+    noteable.kind_of?(Issue)
+  end
+
+  def contains_emoji_only?
+    (note =~ /\A:[-_+[:alnum:]]*:\s?\z/) ? true : false
+  end
+
+  def award_emoji_name
+    return nil unless contains_emoji_only?
+
+    note.match(/\A:([-_+[:alnum:]]*):\s?/)[1]
+  end
 end

app/services/notes/create_service.rb

@@ -5,11 +5,6 @@ module Notes
       note.author = current_user
       note.system = false
 
-      if award_emoji_note?
-        note.is_award = true
-        note.note = emoji_name
-      end
-
       if note.save
         notification_service.new_note(note)
 
@@ -33,24 +28,5 @@ module Notes
       note.project.execute_hooks(note_data, :note_hooks)
       note.project.execute_services(note_data, :note_hooks)
     end
-
-    private
-
-    def award_emoji_note?
-      # We support award-emojis only in issue discussion
-      issue_comment? && contains_emoji_only?
-    end
-
-    def contains_emoji_only?
-      params[:note] =~ /\A:[-_+[:alnum:]]*:\s?\z/
-    end
-
-    def issue_comment?
-      params[:noteable_type] == 'Issue'
-    end
-
-    def emoji_name
-      params[:note].match(/\A:([-_+[:alnum:]]*):\s?/)[1]
-    end
   end
 end