show average cost per round for ammo types

lib/cannery_web/live/ammo_type_live/show.ex

@@ -14,11 +14,14 @@ defmodule CanneryWeb.AmmoTypeLive.Show do
 
   @impl true
   def handle_params(%{"id" => id}, _, socket) do
+    ammo_type = Ammo.get_ammo_type!(id) |> Repo.preload(:ammo_groups)
+
     socket =
       socket
       |> assign(
         page_title: page_title(socket.assigns.live_action),
-        ammo_type: Ammo.get_ammo_type!(id) |> Repo.preload(:ammo_groups)
+        ammo_type: ammo_type,
+        avg_cost_per_round: ammo_type |> Ammo.get_average_cost_for_ammo_type!()
       )
 
     {:noreply, socket}

lib/cannery_web/live/ammo_type_live/show.html.heex

@@ -40,7 +40,7 @@
         ] do %>
       <%= if @ammo_type |> Map.get(field) do %>
         <h3 class="mb-2 sm:mr-4 title text-lg">
-          <%= field |> humanize() %> :
+          <%= field |> humanize() %>:
         </h3>
 
         <span class="mb-4 sm:mb-2 text-primary-600">
@@ -57,7 +57,7 @@
           :corrosive
         ] do %>
       <h3 class="mb-2 sm:mr-4 title text-lg">
-        <%= field |> humanize() %> :
+        <%= field |> humanize() %>:
       </h3>
 
       <span class="mb-4 sm:mb-2 text-primary-600">
@@ -68,7 +68,7 @@
     <%= for field <- [:manufacturer, :sku] do %>
       <%= if @ammo_type |> Map.get(field) do %>
         <h3 class="mb-2 sm:mr-4 title text-lg">
-          <%= field |> humanize() %> :
+          <%= field |> humanize() %>:
         </h3>
 
         <span class="mb-4 sm:mb-2 text-primary-600">
@@ -76,6 +76,16 @@
         </span>
       <% end %>
     <% end %>
+
+    <%= if @avg_cost_per_round do %>
+      <h3 class="mb-2 sm:mr-4 title text-lg">
+        Average Price paid:
+      </h3>
+
+      <span class="mb-4 sm:mb-2 text-primary-600">
+        <%= @avg_cost_per_round |> :erlang.float_to_binary(decimals: 2) %>
+      </span>
+    <% end %>
   </div>
 
   <hr class="hr">