Update dashboard icons

app/controllers/super_admin/dashboard_controller.rb

@@ -1,11 +1,41 @@
 class SuperAdmin::DashboardController < SuperAdmin::ApplicationController
   include ActionView::Helpers::NumberHelper
 
+  ALLOWED_CHART_DAYS = [7, 30].freeze
+
   def index
-    @data = Conversation.unscoped.group_by_day(:created_at, range: 30.days.ago..2.seconds.ago).count.to_a
-    @accounts_count = number_with_delimiter(Account.count)
-    @users_count = number_with_delimiter(User.count)
-    @inboxes_count = number_with_delimiter(Inbox.count)
-    @conversations_count = number_with_delimiter(Conversation.count)
+    @chart_days = parse_chart_days
+    @data = conversations_by_day
+    @accounts_count = format_count(Account.count)
+    @users_count = format_count(User.count)
+    @inboxes_count = format_count(Inbox.count)
+    @conversations_count = format_count(recent_conversations.count)
+  end
+
+  private
+
+  def parse_chart_days
+    days = params[:chart_period].to_i
+    ALLOWED_CHART_DAYS.include?(days) ? days : 7
+  end
+
+  def chart_date_range
+    (@chart_days - 1).days.ago.beginning_of_day..Time.current
+  end
+
+  def last_30_days
+    29.days.ago.beginning_of_day..Time.current
+  end
+
+  def recent_conversations
+    Conversation.unscoped.where(created_at: last_30_days)
+  end
+
+  def conversations_by_day
+    Conversation.unscoped.group_by_day(:created_at, range: chart_date_range, default_value: 0).count.to_a
+  end
+
+  def format_count(count)
+    number_with_delimiter(count)
   end
 end