1 files changed, 46 insertions, 1 deletions
diff --git a/app/finders/issues_finder.rb b/app/finders/issues_finder.rb
index 98831f5be4a..d65c620e75a 100644
--- a/app/finders/issues_finder.rb
+++ b/app/finders/issues_finder.rb
@@ -16,12 +16,17 @@
 #     sort: string
 #     my_reaction_emoji: string
 #     public_only: boolean
+#     due_date: date or '0', '', 'overdue', 'week', or 'month'
 #
 class IssuesFinder < IssuableFinder
   CONFIDENTIAL_ACCESS_LEVEL = Gitlab::Access::REPORTER
 
+  def self.scalar_params
+    @scalar_params ||= super + [:due_date]
+  end
+
   def klass
-    Issue
+    Issue.includes(:author)
   end
 
   def with_confidentiality_access_check
@@ -52,6 +57,46 @@ class IssuesFinder < IssuableFinder
     params.fetch(:public_only, false)
   end
 
+  def filter_items(items)
+    by_due_date(super)
+  end
+
+  def by_due_date(items)
+    if due_date?
+      if filter_by_no_due_date?
+        items = items.without_due_date
+      elsif filter_by_overdue?
+        items = items.due_before(Date.today)
+      elsif filter_by_due_this_week?
+        items = items.due_between(Date.today.beginning_of_week, Date.today.end_of_week)
+      elsif filter_by_due_this_month?
+        items = items.due_between(Date.today.beginning_of_month, Date.today.end_of_month)
+      end
+    end
+
+    items
+  end
+
+  def filter_by_no_due_date?
+    due_date? && params[:due_date] == Issue::NoDueDate.name
+  end
+
+  def filter_by_overdue?
+    due_date? && params[:due_date] == Issue::Overdue.name
+  end
+
+  def filter_by_due_this_week?
+    due_date? && params[:due_date] == Issue::DueThisWeek.name
+  end
+
+  def filter_by_due_this_month?
+    due_date? && params[:due_date] == Issue::DueThisMonth.name
+  end
+
+  def due_date?
+    params[:due_date].present?
+  end
+
   def user_can_see_all_confidential_issues?
     return @user_can_see_all_confidential_issues if defined?(@user_can_see_all_confidential_issues)