Refactor AutocompleteController

This refactors the AutocompleteController according to the guidelines
and boundaries discussed in
https://gitlab.com/gitlab-org/gitlab-ce/issues/49653. Specifically,
ActiveRecord logic is moved to different finders, which are then used in
the controller. View logic in turn is moved to presenters, instead of
directly using ActiveRecord's "to_json" method.

The finder MoveToProjectFinder is also adjusted according to the
abstraction guidelines and boundaries, resulting in a much more simple
finder.

By using finders (and other abstractions) more actively, we can push a
lot of logic out of the controller. We also remove the need for various
"before_action" hooks, though this could be achieved without using
finders as well.

The various finders related to AutcompleteController have also been
moved into a namespace. This removes the need for calling everything
"AutocompleteSmurfFinder", instead you can use
"Autocomplete::SmurfFinder".

1 files changed, 17 insertions, 0 deletions

diff --git a/app/models/award_emoji.rb b/app/models/award_emoji.rb
index 99c7866d636..ddc516ccb60 100644
--- a/app/models/award_emoji.rb
+++ b/app/models/award_emoji.rb
@@ -28,6 +28,23 @@ class AwardEmoji < ActiveRecord::Base
         .where('name IN (?) AND awardable_type = ? AND awardable_id IN (?)', [DOWNVOTE_NAME, UPVOTE_NAME], type, ids)
         .group('name', 'awardable_id')
     end
+
+    # Returns the top 100 emoji awarded by the given user.
+    #
+    # The returned value is a Hash mapping emoji names to the number of times
+    # they were awarded:
+    #
+    #     { 'thumbsup' => 2, 'thumbsdown' => 1 }
+    #
+    # user - The User to get the awards for.
+    # limt - The maximum number of emoji to return.
+    def award_counts_for_user(user, limit = 100)
+      limit(limit)
+        .where(user: user)
+        .group(:name)
+        .order('count_all DESC, name ASC')
+        .count
+    end
   end
 
   def downvote?