Fetch cycle analytics data for a specific date range.

1. Supported date ranges are 30 / 90 days ago. The default is 90 days
   ago.

2. All issues created before "x days ago" are filtered out, even if they
   have other related data (test runs, merge requests) within the filter
   range.

1 files changed, 17 insertions, 1 deletions

diff --git a/app/controllers/projects/cycle_analytics_controller.rb b/app/controllers/projects/cycle_analytics_controller.rb
index 85c81cba511..002a71b593d 100644
--- a/app/controllers/projects/cycle_analytics_controller.rb
+++ b/app/controllers/projects/cycle_analytics_controller.rb
@@ -1,5 +1,21 @@
 class Projects::CycleAnalyticsController < Projects::ApplicationController
   def show
-    @cycle_analytics = CycleAnalytics.new(@project)
+    @cycle_analytics = CycleAnalytics.new(@project, from: parse_start_date)
+  end
+
+  private
+
+  def parse_start_date
+    case cycle_analytics_params[:start_date]
+    when '30' then 30.days.ago
+    when '90' then 90.days.ago
+    else 90.days.ago
+    end
+  end
+
+  def cycle_analytics_params
+    return {} unless params[:cycle_analytics].present?
+
+    { start_date: params[:cycle_analytics][:start_date] }
   end
 end