1 files changed, 22 insertions, 0 deletions
diff --git a/lib/gitlab/user_contribution_calendar.rb b/lib/gitlab/user_contribution_calendar.rb
new file mode 100644
index 00000000000..7eace88e4d7
--- /dev/null
+++ b/lib/gitlab/user_contribution_calendar.rb
@@ -0,0 +1,22 @@
+module Gitlab
+  class UserContributionCalendar
+    def initialize(user)
+      @user = user
+    end
+
+    def calculate
+      query.each_with_object({}) do |(date, contributions), hash|
+        hash[date] = contributions
+      end
+    end
+
+    private
+
+    def query
+      UserContribution
+        .where(user_id: @user.id)
+        .where('date >= ?', 1.year.ago.beginning_of_day)
+        .pluck(:date, :contributions)
+    end
+  end
+end