fix shot records table disappearing after selecting an empty ammo class

lib/cannery/activity_log.ex

@@ -92,6 +92,25 @@ defmodule Cannery.ActivityLog do
 
   defp list_shot_groups_filter_type(query, _all), do: query
 
+  @doc """
+  Returns a count of shot records.
+
+  ## Examples
+
+      iex> get_shot_record_count!(%User{id: 123})
+      3
+
+  """
+  @spec get_shot_record_count!(User.t()) :: integer()
+  def get_shot_record_count!(%User{id: user_id}) do
+    Repo.one(
+      from sg in ShotGroup,
+        where: sg.user_id == ^user_id,
+        select: count(sg.id),
+        distinct: true
+    ) || 0
+  end
+
   @spec list_shot_groups_for_pack(Pack.t(), User.t()) :: [ShotGroup.t()]
   def list_shot_groups_for_pack(
         %Pack{id: pack_id, user_id: user_id},

lib/cannery_web/live/range_live/index.ex

@@ -127,6 +127,7 @@ defmodule CanneryWeb.RangeLive.Index do
     original_counts = packs |> Ammo.get_original_counts(current_user)
     cprs = packs |> Ammo.get_cprs(current_user)
     last_used_dates = packs |> ActivityLog.get_last_used_dates(current_user)
+    shot_record_count = ActivityLog.get_shot_record_count!(current_user)
 
     socket
     |> assign(
@@ -135,7 +136,8 @@ defmodule CanneryWeb.RangeLive.Index do
       cprs: cprs,
       last_used_dates: last_used_dates,
       chart_data: chart_data,
-      shot_groups: shot_groups
+      shot_groups: shot_groups,
+      shot_record_count: shot_record_count
     )
   end
 

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

@@ -50,7 +50,7 @@
 
   <hr class="hr" />
 
-  <%= if @shot_groups |> Enum.empty?() and @search |> is_nil() do %>
+  <%= if @shot_record_count == 0 do %>
     <h1 class="title text-xl text-primary-600">
       <%= gettext("No shots recorded") %>
       <%= display_emoji("😔") %>