WIP

app/view_models/winners_view_model.rb

@@ -45,6 +45,14 @@ def average_winning_bid
     end
   end
 
+  def average_days_to_delivery
+    if auction_count > 0
+      HumanTime.new(time: (total_auction_delivery_time_length / auction_count)).distance_of_time
+    else
+      'n/a'
+    end
+  end
+
   def small_business_count
     User.where(small_business: true).count
   end
@@ -57,6 +65,12 @@ def total_auction_time_length
     end.reduce(:+)
   end
 
+  def total_auction_delivery_time_length
+    completed_auctions.map do |auction|
+      auction.delivery_due_at - auction.ended_at
+    end.reduce(:+)
+  end
+
   def total_winning_bid_amount
     completed_auctions.map do |auction|
       auction.lowest_bid.amount

app/views/winners/index.html.erb

@@ -45,6 +45,12 @@
       statistic: @view_model.average_winning_bid,
       label: 'average winning bid'
     } %>
+    <%= render partial: 'hero_metric',
+      locals: {
+      href: '#chart-winning-bid',
+      statistic: @view_model.average_days_to_delivery,
+      label: 'average days to delivery'
+    } %>
     <%= render partial: 'hero_metric',
       locals: {
       href: '#',