ML-177: implementation

lib/music_library_web/controllers/collection_controller.ex

@@ -1,7 +1,10 @@
 defmodule MusicLibraryWeb.CollectionController do
   use MusicLibraryWeb, :controller
 
+  alias MusicBrainz
   alias MusicLibrary.Collection
+  alias MusicLibrary.Records
+  alias MusicLibrary.ScrobbleActivity
 
   def latest(conn, _params) do
     latest_record = Collection.get_latest_record!()
@@ -39,6 +42,60 @@ defmodule MusicLibraryWeb.CollectionController do
     render(conn, :index, total: total, limit: limit, offset: offset, records: records)
   end
 
+  def scrobble(conn, %{"record_id" => record_id}) do
+    case Records.get_record(record_id) do
+      nil ->
+        conn
+        |> put_status(404)
+        |> json(%{status: "error", reason: "not_found"})
+
+      record ->
+        do_scrobble(conn, record)
+    end
+  end
+
+  defp do_scrobble(conn, record) do
+    if is_nil(record.selected_release_id) or record.selected_release_id == "" do
+      conn
+      |> put_status(422)
+      |> json(%{status: "error", reason: "no_selected_release"})
+    else
+      case MusicBrainz.get_release(record.selected_release_id) do
+        {:ok, release} ->
+          release_with_tracks = MusicBrainz.Release.from_api_response(release)
+
+          case ScrobbleActivity.scrobble_release(
+                 release_with_tracks,
+                 :finished_at,
+                 DateTime.utc_now()
+               ) do
+            {:ok, _response} ->
+              json(conn, %{status: "ok"})
+
+            {:error, :no_duration} ->
+              conn
+              |> put_status(422)
+              |> json(%{status: "error", reason: "no_duration"})
+
+            {:error, :no_session_key} ->
+              conn
+              |> put_status(503)
+              |> json(%{status: "error", reason: "lastfm_not_configured"})
+
+            {:error, _reason} ->
+              conn
+              |> put_status(502)
+              |> json(%{status: "error", reason: "lastfm_error"})
+          end
+
+        {:error, _reason} ->
+          conn
+          |> put_status(502)
+          |> json(%{status: "error", reason: "musicbrainz_error"})
+      end
+    end
+  end
+
   defp parse_int(nil, default), do: default
 
   defp parse_int(value, default) when is_binary(value) do

lib/music_library_web/controllers/collection_json.ex

@@ -31,6 +31,7 @@ defmodule MusicLibraryWeb.CollectionJSON do
       genres: record.genres,
       release_date: record.release_date,
       purchased_at: record.purchased_at,
+      selected_release_id: record.selected_release_id,
       artists: Enum.map(record.artists, & &1.name),
       title: record.title,
       cover_url: url(~p"/api/v1/assets/#{Transform.new(hash: record.cover_hash)}"),

lib/music_library_web/router.ex

@@ -130,6 +130,7 @@ defmodule MusicLibraryWeb.Router do
     get "/collection/random", CollectionController, :random
     get "/collection/on_this_day", CollectionController, :on_this_day
     get "/collection", CollectionController, :index
+    post "/collection/:record_id/scrobble", CollectionController, :scrobble
     get "/errors", ErrorController, :index
     get "/errors/:id", ErrorController, :show
     post "/errors/:id/mute", ErrorController, :mute