add used filtering to container show page

lib/cannery/ammo.ex

@@ -5,7 +5,7 @@ defmodule Cannery.Ammo do
 
   import CanneryWeb.Gettext
   import Ecto.Query, warn: false
-  alias Cannery.{Accounts.User, Containers, Repo}
+  alias Cannery.{Accounts.User, Containers, Containers.Container, Repo}
   alias Cannery.ActivityLog.ShotGroup
   alias Cannery.Ammo.{AmmoGroup, AmmoType}
   alias Ecto.Changeset
@@ -255,6 +255,51 @@ defmodule Cannery.Ammo do
     )
   end
 
+  @doc """
+  Returns the list of ammo_groups for a user and container.
+
+  ## Examples
+
+      iex> list_ammo_groups_for_container(%AmmoType{id: 123}, %User{id: 123})
+      [%AmmoGroup{}, ...]
+
+  """
+  @spec list_ammo_groups_for_container(Container.t(), User.t()) :: [AmmoGroup.t()]
+  @spec list_ammo_groups_for_container(Container.t(), User.t(), include_empty :: boolean()) ::
+          [AmmoGroup.t()]
+  def list_ammo_groups_for_container(container, user, include_empty \\ false)
+
+  def list_ammo_groups_for_container(
+        %Container{id: container_id, user_id: user_id},
+        %User{id: user_id},
+        _include_empty = true
+      ) do
+    Repo.all(
+      from ag in AmmoGroup,
+        left_join: sg in assoc(ag, :shot_groups),
+        where: ag.container_id == ^container_id,
+        where: ag.user_id == ^user_id,
+        preload: [shot_groups: sg],
+        order_by: ag.id
+    )
+  end
+
+  def list_ammo_groups_for_container(
+        %Container{id: container_id, user_id: user_id},
+        %User{id: user_id},
+        _include_empty = false
+      ) do
+    Repo.all(
+      from ag in AmmoGroup,
+        left_join: sg in assoc(ag, :shot_groups),
+        where: ag.container_id == ^container_id,
+        where: ag.user_id == ^user_id,
+        where: not (ag.count == 0),
+        preload: [shot_groups: sg],
+        order_by: ag.id
+    )
+  end
+
   @doc """
   Returns the count of ammo_groups for an ammo type.
 

lib/cannery/containers.ex

@@ -212,6 +212,7 @@ defmodule Cannery.Containers do
     container
     |> Repo.preload(:ammo_groups)
     |> Map.fetch!(:ammo_groups)
+    |> Enum.reject(fn %{count: count} -> count == 0 end)
     |> Enum.count()
   end
 

lib/cannery_web/live/container_live/show.ex

@@ -5,13 +5,13 @@ defmodule CanneryWeb.ContainerLive.Show do
 
   use CanneryWeb, :live_view
   import CanneryWeb.Components.{AmmoGroupCard, TagCard}
-  alias Cannery.{Accounts.User, Containers, Containers.Container, Repo, Tags}
+  alias Cannery.{Ammo, Accounts.User, Containers, Containers.Container, Repo, Tags}
   alias CanneryWeb.Endpoint
   alias Ecto.Changeset
   alias Phoenix.LiveView.Socket
 
   @impl true
-  def mount(_params, _session, socket), do: {:ok, socket}
+  def mount(_params, _session, socket), do: {:ok, socket |> assign(show_used: false)}
 
   @impl true
   def handle_params(
@@ -39,7 +39,7 @@ defmodule CanneryWeb.ContainerLive.Show do
               container_name: container.name
             )
 
-          socket |> put_flash(:info, prompt) |> render_container(container.id, current_user)
+          socket |> put_flash(:info, prompt) |> render_container()
 
         {:error, error_string} ->
           socket |> put_flash(:error, error_string)
@@ -82,12 +82,23 @@ defmodule CanneryWeb.ContainerLive.Show do
     {:noreply, socket}
   end
 
+  @impl true
+  def handle_event("toggle_show_used", _, %{assigns: %{show_used: show_used}} = socket) do
+    {:noreply, socket |> assign(:show_used, !show_used) |> render_container()}
+  end
+
   @spec render_container(Socket.t(), Container.id(), User.t()) :: Socket.t()
-  defp render_container(%{assigns: %{live_action: live_action}} = socket, id, current_user) do
+  defp render_container(
+         %{assigns: %{live_action: live_action, show_used: show_used}} = socket,
+         id,
+         current_user
+       ) do
     %{name: container_name} =
       container =
       Containers.get_container!(id, current_user)
-      |> Repo.preload([:ammo_groups, :tags], force: true)
+      |> Repo.preload([:tags], force: true)
+
+    ammo_groups = Ammo.list_ammo_groups_for_container(container, current_user, show_used)
 
     page_title =
       case live_action do
@@ -96,6 +107,13 @@ defmodule CanneryWeb.ContainerLive.Show do
         :edit_tags -> gettext("Edit %{name} tags", name: container_name)
       end
 
-    socket |> assign(container: container, page_title: page_title)
+    socket |> assign(container: container, ammo_groups: ammo_groups, page_title: page_title)
+  end
+
+  @spec render_container(Socket.t()) :: Socket.t()
+  defp render_container(
+         %{assigns: %{container: %{id: container_id}, current_user: current_user}} = socket
+       ) do
+    socket |> render_container(container_id, current_user)
   end
 end

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

@@ -22,10 +22,10 @@
     </span>
   <% end %>
 
-  <%= unless @container.ammo_groups |> Enum.empty?() do %>
+  <%= unless @ammo_groups |> Enum.empty?() do %>
     <span class="rounded-lg title text-lg">
       <%= gettext("Packs:") %>
-      <%= @container |> Containers.get_container_ammo_group_count!() %>
+      <%= Enum.count(@ammo_groups) %>
     </span>
 
     <span class="rounded-lg title text-lg">
@@ -84,14 +84,22 @@
 
   <hr class="mb-4 hr" />
 
+  <div class="flex flex-col justify-center items-center">
+    <.toggle_button action="toggle_show_used" value={@show_used}>
+      <span class="title text-lg text-primary-600">
+        <%= gettext("Show used") %>
+      </span>
+    </.toggle_button>
+  </div>
+
   <div>
-    <%= if @container.ammo_groups |> Enum.empty?() do %>
+    <%= if @ammo_groups |> Enum.empty?() do %>
       <h2 class="mx-8 my-4 title text-lg text-primary-600">
         <%= gettext("No ammo in this container") %>
       </h2>
     <% else %>
       <div class="flex flex-wrap justify-center items-center">
-        <%= for ammo_group <- @container.ammo_groups do %>
+        <%= for ammo_group <- @ammo_groups do %>
           <.ammo_group_card ammo_group={ammo_group} />
         <% end %>
       </div>