only filter by non-empty channels, clean up

lib/chiya_web/controllers/note_controller.ex

@@ -1,26 +1,25 @@
 defmodule ChiyaWeb.NoteController do
   use ChiyaWeb, :controller
+  import Plug.Conn, only: [assign: 3]
 
   alias Chiya.Notes
   alias Chiya.Notes.{Note, NoteImport}
 
   def index(conn, %{"channel" => channel_slug}) do
-    channels =
-      Chiya.Channels.list_channels()
-      |> Chiya.Channels.preload_channel()
-
     channel = Chiya.Channels.get_channel_by_slug!(channel_slug)
     notes = Notes.list_notes_by_channel(channel)
-    render(conn, :index, notes: notes, channels: channels)
+
+    conn
+    |> with_channels()
+    |> render(:index, notes: notes)
   end
 
   def index(conn, _params) do
-    channels =
-      Chiya.Channels.list_channels()
-      |> Chiya.Channels.preload_channel()
-
     notes = Notes.list_notes()
-    render(conn, :index, notes: notes, channels: channels)
+
+    conn
+    |> with_channels()
+    |> render(:index, notes: notes)
   end
 
   def new(conn, _params) do
@@ -150,6 +149,16 @@ defmodule ChiyaWeb.NoteController do
     |> redirect(to: ~p"/admin/notes")
   end
 
+  defp with_channels(conn) do
+    assign(
+      conn,
+      :channels,
+      Chiya.Channels.list_channels()
+      |> Chiya.Channels.preload_channel()
+      |> Enum.filter(fn c -> not Enum.empty?(c.notes) end)
+    )
+  end
+
   defp from_channel_ids(note_params) do
     selected_ids = Enum.map(note_params["channels"] || [], &String.to_integer/1)
 

lib/chiya_web/controllers/note_html/index.html.heex

@@ -12,9 +12,9 @@
 </.header>
 
 <section class="flex flex-row flex-wrap mt-4 gap-3">
-  <a href={~p"/admin/notes"} class="text-sm rounded-full bg-gray-300 hover:bg-gray-400 px-2 py-1">All</a>
+  <a href={~p"/admin/notes"} class="text-sm dark:text-gray-300 rounded-full bg-gray-300 hover:bg-gray-400 dark:bg-gray-700 dark:hover:bg-gray-600 px-2 py-1">All</a>
   <%= for channel <- @channels do %>
-    <a href={~p"/admin/notes?channel=#{channel.slug}"} class="text-sm rounded-full bg-gray-300 hover:bg-gray-400 px-2 py-1"><%= channel.name %> <span class="text-gray-600">(<%= Enum.count(channel.notes) %>)</span></a>
+    <a href={~p"/admin/notes?channel=#{channel.slug}"} class="text-sm dark:text-gray-300 rounded-full bg-gray-300 hover:bg-gray-400 dark:bg-gray-700 dark:hover:bg-gray-600 px-2 py-1"><%= channel.name %> <span class="text-gray-600 dark:text-gray-500">(<%= Enum.count(channel.notes) %>)</span></a>
   <% end %>
 </section>