Make stats feed update automatically

lib/last_fm/refresh.ex

@@ -5,12 +5,13 @@ defmodule LastFm.Refresh do
 
   alias LastFm.Feed
 
-  @refresh_interval System.convert_time_unit(30, :second, :millisecond)
+  @refresh_interval System.convert_time_unit(10, :second, :millisecond)
 
   def start_link(config) do
     GenServer.start_link(__MODULE__, config, name: __MODULE__)
   end
 
+  @impl true
   def init(config) do
     if enabled?(config) do
       {:ok, config, {:continue, :refresh}}
@@ -19,6 +20,7 @@ defmodule LastFm.Refresh do
     end
   end
 
+  @impl true
   def handle_continue(:refresh, config) do
     case config.api.get_recent_tracks(config.user, config.api_key) do
       {:ok, tracks} ->
@@ -33,6 +35,21 @@ defmodule LastFm.Refresh do
     end
   end
 
+  @impl true
+  def handle_info(:refresh, config) do
+    case config.api.get_recent_tracks(config.user, config.api_key) do
+      {:ok, tracks} ->
+        Feed.update(tracks)
+        Process.send_after(self(), :refresh, @refresh_interval)
+        {:noreply, config}
+
+      {:error, _reason} ->
+        # TODO: think about failure scenario - error is logged at the API level
+        Process.send_after(self(), :refresh, @refresh_interval)
+        {:noreply, config}
+    end
+  end
+
   defp enabled?(config) do
     config.api && config.api_key
   end