Use event structs

lib/live_beats/accounts.ex

@@ -3,7 +3,7 @@ defmodule LiveBeats.Accounts do
   import Ecto.Changeset
 
   alias LiveBeats.Repo
-  alias LiveBeats.Accounts.{User, Identity}
+  alias LiveBeats.Accounts.{User, Identity, Events}
 
   @admin_emails ["chris@chrismccord.com"]
   @pubsub LiveBeats.PubSub
@@ -64,19 +64,19 @@ defmodule LiveBeats.Accounts do
     current_user
   end
 
-  def update_active_profile(%User{} = current_user, profile_user_id) do
+  def update_active_profile(%User{} = current_user, profile_uid) do
     {1, _} =
       Repo.update_all(from(u in User, where: u.id == ^current_user.id),
-        set: [active_profile_user_id: profile_user_id]
+        set: [active_profile_user_id: profile_uid]
       )
 
     Phoenix.PubSub.broadcast!(
       @pubsub,
       topic(current_user.id),
-      {__MODULE__, :active_profile_changed, current_user, %{user_id: profile_user_id}}
+      %Events.ActiveProfileChanged{current_user: current_user, new_profile_user_id: profile_uid}
     )
 
-    %User{current_user | active_profile_user_id: profile_user_id}
+    %User{current_user | active_profile_user_id: profile_uid}
   end
 
   ## User registration

lib/live_beats/accounts/events.ex

@@ -0,0 +1,5 @@
+defmodule LiveBeats.Accounts.Events do
+  defmodule ActiveProfileChanged do
+    defstruct current_user: nil, new_profile_user_id: nil
+  end
+end

lib/live_beats/media_library.ex

@@ -6,7 +6,7 @@ defmodule LiveBeats.MediaLibrary do
   require Logger
   import Ecto.Query, warn: false
   alias LiveBeats.{Repo, MP3Stat, Accounts}
-  alias LiveBeats.MediaLibrary.{Profile, Song, Genre}
+  alias LiveBeats.MediaLibrary.{Profile, Song, Events, Genre}
   alias Ecto.{Multi, Changeset}
 
   @pubsub LiveBeats.PubSub
@@ -71,11 +71,10 @@ defmodule LiveBeats.MediaLibrary do
 
     elapsed = elapsed_playback(new_song)
 
-    Phoenix.PubSub.broadcast!(
-      @pubsub,
-      topic(song.user_id),
-      {__MODULE__, :play, song, %{elapsed: elapsed}}
-    )
+    Phoenix.PubSub.broadcast!(@pubsub, topic(song.user_id), %Events.Play{
+      song: song,
+      elapsed: elapsed
+    })
 
     new_song
   end
@@ -96,7 +95,7 @@ defmodule LiveBeats.MediaLibrary do
       |> Multi.update_all(:now_paused, fn _ -> pause_query end, [])
       |> Repo.transaction()
 
-    Phoenix.PubSub.broadcast!(@pubsub, topic(song.user_id), {__MODULE__, :pause, song})
+    Phoenix.PubSub.broadcast!(@pubsub, topic(song.user_id), %Events.Pause{song: song})
   end
 
   def play_next_song_auto(%Profile{} = profile) do

lib/live_beats/media_library/events.ex

@@ -0,0 +1,9 @@
+defmodule LiveBeats.MediaLibrary.Events do
+  defmodule Play do
+    defstruct song: nil, elapsed: nil
+  end
+
+  defmodule Pause do
+    defstruct song: nil
+  end
+end

lib/live_beats_web/live/player_live.ex

@@ -215,7 +215,7 @@ defmodule LiveBeatsWeb.PlayerLive do
     {:noreply, socket}
   end
 
-  def handle_info({Accounts, :active_profile_changed, _cur_user, %{user_id: user_id}}, socket) do
+  def handle_info(%Accounts.Events.ActiveProfileChanged{new_profile_user_id: user_id}, socket) do
     if user_id do
       {:noreply, assign(socket, profile: get_profile(user_id))}
     else
@@ -227,11 +227,11 @@ defmodule LiveBeatsWeb.PlayerLive do
     {:noreply, play_current_song(socket)}
   end
 
-  def handle_info({MediaLibrary, :pause, _}, socket) do
+  def handle_info(%MediaLibrary.Events.Pause{}, socket) do
     {:noreply, push_pause(socket)}
   end
 
-  def handle_info({MediaLibrary, :play, %Song{} = song, %{elapsed: elapsed}}, socket) do
+  def handle_info(%MediaLibrary.Events.Play{song: song, elapsed: elapsed}, socket) do
     {:noreply, play_song(socket, song, elapsed)}
   end
 

lib/live_beats_web/live/song_live/index.ex

@@ -117,21 +117,23 @@ defmodule LiveBeatsWeb.SongLive.Index do
 
   def handle_event("delete", %{"id" => id}, socket) do
     song = MediaLibrary.get_song!(id)
+
     if song.user_id == socket.assigns.current_user.id do
       {:ok, _} = MediaLibrary.delete_song(song)
     end
+
     {:noreply, socket}
   end
 
-  def handle_info({Accounts, :active_profile_changed, _cur_user, %{user_id: user_id}}, socket) do
+  def handle_info(%Accounts.Events.ActiveProfileChanged{new_profile_user_id: user_id}, socket) do
     {:noreply, assign(socket, active_profile_id: user_id)}
   end
 
-  def handle_info({MediaLibrary, :play, %MediaLibrary.Song{} = song, _meta}, socket) do
+  def handle_info(%MediaLibrary.Events.Play{song: song}, socket) do
     {:noreply, play_song(socket, song)}
   end
 
-  def handle_info({MediaLibrary, :pause, %MediaLibrary.Song{} = song}, socket) do
+  def handle_info(%MediaLibrary.Events.Pause{song: song}, socket) do
     {:noreply, pause_song(socket, song.id)}
   end