Add attribution field and handle async duration race

lib/live_beats/media_library.ex

@@ -49,7 +49,7 @@ defmodule LiveBeats.MediaLibrary do
 
     stopped_query =
       from s in Song,
-        where: s.user_id == ^song.user_id and s.status == :playing,
+        where: s.user_id == ^song.user_id and s.status in [:playing, :paused],
         update: [set: [status: :stopped]]
 
     {:ok, %{now_playing: new_song}} =
@@ -89,7 +89,12 @@ defmodule LiveBeats.MediaLibrary do
   end
 
   def put_stats(%Ecto.Changeset{} = changeset, %MP3Stat{} = stat) do
-    Ecto.Changeset.put_change(changeset, :duration, stat.duration)
+    chset = Song.put_duration(changeset, stat.duration)
+    if error = chset.errors[:duration] do
+      {:error, %{duration: error}}
+    else
+      {:ok, chset}
+    end
   end
 
   def import_songs(%Accounts.User{} = user, changesets, consume_file)

lib/live_beats/media_library/song.ex

@@ -15,6 +15,7 @@ defmodule LiveBeats.MediaLibrary.Song do
     field :duration, :integer
     field :status, Ecto.Enum, values: [stopped: 1, playing: 2, paused: 3]
     field :title, :string
+    field :attribution, :string
     field :mp3_url, :string
     field :mp3_filepath, :string
     field :mp3_filename, :string
@@ -31,15 +32,24 @@ defmodule LiveBeats.MediaLibrary.Song do
   @doc false
   def changeset(song, attrs) do
     song
-    |> cast(attrs, [:album_artist, :artist, :title, :date_recorded, :date_released])
+    |> cast(attrs, [:album_artist, :artist, :title, :attribution, :date_recorded, :date_released])
     |> validate_required([:artist, :title])
-    |> validate_number(:duration, greater_than: 0, less_than: 1200)
   end
 
   def put_user(%Ecto.Changeset{} = changeset, %Accounts.User{} = user) do
     put_assoc(changeset, :user, user)
   end
 
+  def put_duration(%Ecto.Changeset{} = changeset, duration) when is_integer(duration) do
+    changeset
+    |> Ecto.Changeset.change(%{duration: duration})
+    |> Ecto.Changeset.validate_number(:duration,
+      greater_than: 0,
+      less_than: 1200,
+      message: "must be less than 20 minutes"
+    )
+  end
+
   def put_mp3_path(%Ecto.Changeset{} = changeset) do
     if changeset.valid? do
       filename = Ecto.UUID.generate() <> ".mp3"

lib/live_beats_web/live/live_helpers.ex

@@ -315,7 +315,7 @@ defmodule LiveBeatsWeb.LiveHelpers do
             <%= for {row, i} <- Enum.with_index(@rows) do %>
               <tr id={@row_id && @row_id.(row)} class="hover:bg-gray-50">
                 <%= for col <- @col do %>
-                  <td class={"px-6 py-3 whitespace-nowrap text-sm font-medium text-gray-900 #{if i == 0, do: "max-w-0 w-full"}"}>
+                  <td class={"px-6 py-3 whitespace-nowrap text-sm font-medium text-gray-900 #{if i == 0, do: "max-w-0 w-full"} #{col[:class]}"}>
                     <div class="flex items-center space-x-3 lg:pl-2">
                       <%= render_slot(col, row) %>
                     </div>

lib/live_beats_web/live/player_live.ex

@@ -16,7 +16,7 @@ defmodule LiveBeatsWeb.PlayerLive do
       <div class="bg-white dark:bg-gray-800 p-4">
         <div class="flex items-center space-x-3.5 sm:space-x-5 lg:space-x-3.5 xl:space-x-5">
           <div class="pr-5">
-            <div class="min-w-0 flex-col space-y-0.5">
+            <div class="min-w-0 max-w-xs flex-col space-y-0.5">
                 <h2 class="text-black dark:text-white text-sm sm:text-sm lg:text-sm xl:text-sm font-semibold truncate">
                   <%= if @song, do: @song.title, else: raw("&nbsp;") %>
                 </h2>

lib/live_beats_web/live/song_live/index.ex

@@ -33,6 +33,7 @@ defmodule LiveBeatsWeb.SongLive.Index do
     >
       <:col let={%{song: song}} label="Title"><%= song.title %></:col>
       <:col let={%{song: song}} label="Artist"><%= song.artist %></:col>
+      <:col let={%{song: song}} label="Attribution" class="max-w-5xl break-words text-gray-600 font-light"><%= song.attribution %></:col>
       <:col let={%{song: song}} label="Duration"><%= MP3Stat.to_mmss(song.duration) %></:col>
       <:col let={%{song: song}} label="">
         <.link phx-click={show_modal("delete-modal-#{song.id}")} class="inline-flex items-center px-3 py-2 text-sm leading-4 font-medium">

lib/live_beats_web/live/song_live/song_entry_component.ex

@@ -33,6 +33,18 @@ defmodule LiveBeatsWeb.SongLive.SongEntryComponent do
         <.error input_name={"songs[#{@ref}][title]"} field={:title} errors={@errors} class="-mt-1"/>
         <.error input_name={"songs[#{@ref}][artist]"} field={:artist} errors={@errors} class="-mt-1"/>
       </div>
+      <div class="border col-span-full border-gray-300 rounded-md px-3 py-2 mt-2 shadow-sm focus-within:ring-1 focus-within:ring-indigo-600 focus-within:border-indigo-600">
+        <label for="name" class="block text-xs font-medium text-gray-900">
+          License Attribution <span class="text-gray-400">(as required by artist)</span>
+        </label>
+        <textarea
+          name={"songs[#{@ref}][attribution]"}
+          class="block w-full border-0 p-0 text-gray-900 placeholder-gray-500 focus:ring-0 sm:text-xs"
+        ><%= @attribution %></textarea>
+      </div>
+      <div class="col-span-full sm:grid sm:grid-cols-2 sm:gap-2 sm:items-start">
+        <.error input_name={"songs[#{@ref}][attribution]"} field={:attribution} errors={@errors} class="-mt-1"/>
+      </div>
       <div style={"width: #{@progress}%;"} class="col-span-full bg-purple-500 dark:bg-purple-400 h-1.5 w-0 p-0">
       </div>
     </div>
@@ -51,6 +63,7 @@ defmodule LiveBeatsWeb.SongLive.SongEntryComponent do
      |> assign(title: Ecto.Changeset.get_field(changeset, :title))
      |> assign(artist: Ecto.Changeset.get_field(changeset, :artist))
      |> assign(duration: Ecto.Changeset.get_field(changeset, :duration))
+     |> assign(attribution: Ecto.Changeset.get_field(changeset, :attribution))
      |> assign_new(:progress, fn -> 0 end)}
   end
 end

lib/live_beats_web/live/song_live/song_row_component.ex

@@ -10,7 +10,7 @@ defmodule LiveBeatsWeb.SongLive.SongRowComponent do
     <tr id={@id} class={@class}}>
       <%= for {col, i} <- Enum.with_index(@col) do %>
         <td
-          class={"px-6 py-3 whitespace-nowrap text-sm font-medium text-gray-900 #{if i == 0, do: "max-w-0 w-full cursor-pointer"}"}
+          class={"px-6 py-3 text-sm font-medium text-gray-900 #{if i == 0, do: "w-80 cursor-pointer"} #{col[:class]}"}
           phx-click={JS.push("play_or_pause", value: %{id: @song.id})}
          >
           <div class="flex items-center space-x-3 lg:pl-2">

lib/live_beats_web/live/song_live/upload_form_component.ex

@@ -46,18 +46,26 @@ defmodule LiveBeatsWeb.SongLive.UploadFormComponent do
     %{current_user: current_user} = socket.assigns
     changesets = socket.assigns.changesets
 
-    case MediaLibrary.import_songs(current_user, changesets, &consume_entry(socket, &1, &2)) do
-      {:ok, songs} ->
-        {:noreply,
-         socket
-         |> put_flash(:info, "#{map_size(songs)} song(s) uploaded")
-         |> push_redirect(to: Routes.song_index_path(socket, :index))}
+    if pending_stats?(socket) do
+      {:noreply, socket}
+    else
+      case MediaLibrary.import_songs(current_user, changesets, &consume_entry(socket, &1, &2)) do
+        {:ok, songs} ->
+          {:noreply,
+          socket
+          |> put_flash(:info, "#{map_size(songs)} song(s) uploaded")
+          |> push_redirect(to: home_path(socket))}
 
-      {:error, _reason} ->
-        {:noreply, socket}
+        {:error, _reason} ->
+          {:noreply, socket}
+      end
     end
   end
 
+  defp pending_stats?(socket) do
+    Enum.find(socket.assigns.changesets, fn {_ref, chset} -> !chset.changes[:duration] end)
+  end
+
   defp consume_entry(socket, ref, store_func) when is_function(store_func) do
     {entries, []} = uploaded_entries(socket, :mp3)
     entry = Enum.find(entries, fn entry -> entry.ref == ref end)
@@ -121,6 +129,7 @@ defmodule LiveBeatsWeb.SongLive.UploadFormComponent do
 
     consume_uploaded_entry(socket, entry, fn %{path: path} ->
       Task.Supervisor.start_child(LiveBeats.TaskSupervisor, fn ->
+        Process.sleep(5000)
         send_update(lv, __MODULE__,
           id: socket.assigns.id,
           action: {:duration, entry.ref, LiveBeats.MP3Stat.parse(path)}
@@ -136,9 +145,20 @@ defmodule LiveBeatsWeb.SongLive.UploadFormComponent do
   defp file_error(%{kind: :not_accepted} = assigns), do: ~H|not a valid MP3 file|
   defp file_error(%{kind: :too_many_files} = assigns), do: ~H|too many files|
 
+  defp file_error(%{kind: {msg, opts}} = assigns) when is_binary(msg) and is_list(opts) do
+    ~H|<%= LiveBeatsWeb.ErrorHelpers.translate_error(@kind) %>|
+  end
+
   defp put_stats(socket, entry_ref, %MP3Stat{} = stat) do
     if changeset = get_changeset(socket, entry_ref) do
-      update_changeset(socket, MediaLibrary.put_stats(changeset, stat), entry_ref)
+      case MediaLibrary.put_stats(changeset, stat) do
+        {:ok, new_changeset} ->
+          update_changeset(socket, new_changeset, entry_ref)
+
+        {:error, %{duration: error}} ->
+          IO.inspect({:duration, error})
+          cancel_changeset_upload(socket, entry_ref, error)
+      end
     else
       socket
     end

lib/live_beats_web/templates/layout/live.html.heex

@@ -1,4 +1,10 @@
 <main>
+  <.live_component module={LiveBeatsWeb.LayoutComponent} id="layout" />
+
+  <%= if @current_user do %>
+    <%= live_render(@socket, LiveBeatsWeb.PlayerLive, id: "player", session: %{}, sticky: true) %>
+  <% end %>
+
   <p class="alert alert-info fade-in-scale" role="alert"
     phx-click="lv:clear-flash"
     phx-value-key="info"><%= live_flash(@flash, :info) %></p>
@@ -7,7 +13,5 @@
     phx-click="lv:clear-flash"
     phx-value-key="error"><%= live_flash(@flash, :error) %></p>
 
-  <.live_component module={LiveBeatsWeb.LayoutComponent} id="layout" />
-
   <%= @inner_content %>
 </main>

lib/live_beats_web/templates/layout/root.html.heex

@@ -301,9 +301,6 @@
         </div>
 
         <main class="flex-1 relative z-0 overflow-y-auto focus:outline-none">
-          <%= if @current_user do %>
-            <%= live_render(@conn, LiveBeatsWeb.PlayerLive, session: %{}) %>
-          <% end %>
           <%= @inner_content %>
         </main>
       </div>

priv/repo/migrations/20211027201102_create_songs.exs

@@ -10,6 +10,7 @@ defmodule LiveBeats.Repo.Migrations.CreateSongs do
       add :played_at, :utc_datetime
       add :paused_at, :utc_datetime
       add :title, :string, null: false
+      add :attribution, :string
       add :mp3_url, :string, null: false
       add :mp3_filename, :string, null: false
       add :mp3_filepath, :string, null: false