Use streams for scrobbled tracks

lib/last_fm/feed.ex

@@ -17,11 +17,19 @@ defmodule LastFm.Feed do
     :ets.delete_all_objects(__MODULE__)
     :ets.insert(__MODULE__, data)
 
-    Phoenix.PubSub.broadcast(LastFm.PubSub, "feed:update", %{tracks: data})
+    Phoenix.PubSub.broadcast(LastFm.PubSub, "feed:update", %{tracks: tracks})
   end
 
   def all do
-    :ets.tab2list(__MODULE__)
+    m = [
+      {
+        {:_, :_},
+        [],
+        [{:element, 2, :"$_"}]
+      }
+    ]
+
+    :ets.select(__MODULE__, m)
     |> Enum.reverse()
   end
 

lib/music_library_web/live/stats_live/index.ex

@@ -26,6 +26,10 @@ defmodule MusicLibraryWeb.StatsLive.Index do
 
     {:ok,
      socket
+     |> stream_configure(:recent_tracks,
+       dom_id: fn track -> "track-#{track.scrobbled_at_uts}" end
+     )
+     |> stream(:recent_tracks, recent_tracks)
      |> assign(
        page_title: gettext("Stats"),
        collection_count_by_format: collection_count_by_format,
@@ -33,20 +37,12 @@ defmodule MusicLibraryWeb.StatsLive.Index do
        collection_count: collection_count,
        wishlist_count: wishlist_count,
        latest_record: latest_record,
-       recent_tracks: recent_tracks,
        nav_section: :stats
      )}
   end
 
   def handle_info(%{tracks: tracks}, socket) do
-    socket =
+    {:noreply, stream(socket, :recent_tracks, tracks, reset: true)}
-      if socket.assigns.recent_tracks !== tracks do
-        assign(socket, :recent_tracks, tracks)
-      else
-        socket
-      end
-
-    {:noreply, socket}
   end
 
   # The Tailwind build step requires all needed classes to be explicitly referenced

lib/music_library_web/live/stats_live/index.html.heex

@@ -65,8 +65,8 @@
   <h1 class="mt-5 text-base lg:text-2xl text-gray-900 dark:text-gray-200 font-semibold">
     <%= gettext("Scrobble activity") %>
   </h1>
-  <ul role="list" class="-mb-8 mt-5">
+  <ul id="scrobble-activity" role="list" class="-mb-8 mt-5" phx-update="stream">
-    <li :for={{id, track} <- @recent_tracks} id={"track-#{id}"} class="group">
+    <li :for={{id, track} <- @streams.recent_tracks} id={"track-#{id}"} class="group">
       <div class="relative pb-8">
         <span
           class="group-last:hidden absolute left-6 top-6 -ml-px h-full w-0.5 bg-gray-200"

priv/gettext/default.pot

@@ -269,7 +269,7 @@ msgid "Something went wrong!"
 msgstr ""
 
 #: lib/music_library_web/components/layouts/app.html.heex:7
-#: lib/music_library_web/live/stats_live/index.ex:30
+#: lib/music_library_web/live/stats_live/index.ex:34
 #, elixir-autogen, elixir-format
 msgid "Stats"
 msgstr ""