add ammo type round totals and total rounds shot

CHANGELOG.md

@@ -6,6 +6,7 @@
 - Fix ammo type firing type display
 - Show original count, current value, and percentage remaining for ammo groups
 - Show shot history for an ammo group
+- Show ammo round totals and total shot for ammo types
 
 # 0.1.0
 - Initial release!

lib/cannery/ammo.ex

@@ -67,6 +67,59 @@ defmodule Cannery.Ammo do
     )
   end
 
+  @doc """
+  Gets the total number of rounds for an ammo type
+
+  Raises `Ecto.NoResultsError` if the Ammo type does not exist.
+
+  ## Examples
+
+      iex> get_round_count_for_ammo_type(123, %User{id: 123})
+      %AmmoType{}
+
+      iex> get_round_count_for_ammo_type(456, %User{id: 123})
+      ** (Ecto.NoResultsError)
+
+  """
+  @spec get_round_count_for_ammo_type(AmmoType.t(), User.t()) :: non_neg_integer()
+  def get_round_count_for_ammo_type(
+        %AmmoType{id: ammo_type_id, user_id: user_id},
+        %User{id: user_id}
+      ) do
+    Repo.one!(
+      from ag in AmmoGroup,
+        where: ag.ammo_type_id == ^ammo_type_id,
+        select: sum(ag.count)
+    )
+  end
+
+  @doc """
+  Gets the total number of rounds shot for an ammo type
+
+  Raises `Ecto.NoResultsError` if the Ammo type does not exist.
+
+  ## Examples
+
+      iex> get_used_count_for_ammo_type(123, %User{id: 123})
+      %AmmoType{}
+
+      iex> get_used_count_for_ammo_type(456, %User{id: 123})
+      ** (Ecto.NoResultsError)
+
+  """
+  @spec get_used_count_for_ammo_type(AmmoType.t(), User.t()) :: non_neg_integer()
+  def get_used_count_for_ammo_type(
+        %AmmoType{id: ammo_type_id, user_id: user_id},
+        %User{id: user_id}
+      ) do
+    Repo.one!(
+      from ag in AmmoGroup,
+        left_join: sg in assoc(ag, :shot_groups),
+        where: ag.ammo_type_id == ^ammo_type_id,
+        select: sum(sg.count)
+    )
+  end
+
   @doc """
   Creates a ammo_type.
 

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

@@ -28,6 +28,9 @@
                 <%= field_name %>
               </th>
             <% end %>
+            <th class="p-2">
+              <%= gettext("Total # of rounds") %>
+            </th>
 
             <th class="p-2"></th>
           </tr>
@@ -46,6 +49,10 @@
                 </td>
               <% end %>
 
+              <td class="p-2">
+                <%= ammo_type |> Ammo.get_round_count_for_ammo_type(@current_user) %>
+              </td>
+
               <td class="p-2">
                 <div class="px-4 py-2 space-x-4 flex justify-center items-center">
                   <%= live_redirect to: Routes.ammo_type_show_path(Endpoint, :show, ammo_type),

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

@@ -73,6 +73,22 @@
       <% end %>
     <% end %>
 
+    <h3 class="title text-lg">
+      <%= gettext("Current # of rounds:") %>
+    </h3>
+
+    <span class="text-primary-600">
+      <%= @ammo_type |> Ammo.get_round_count_for_ammo_type(@current_user) %>
+    </span>
+
+    <h3 class="title text-lg">
+      <%= gettext("Total rounds shot:") %>
+    </h3>
+
+    <span class="text-primary-600">
+      <%= @ammo_type |> Ammo.get_used_count_for_ammo_type(@current_user) %>
+    </span>
+
     <%= if @avg_cost_per_round do %>
       <h3 class="title text-lg">
         <%= gettext("Average Price paid") %>: