extract urls in async task

lib/radiator/outline/node_change_listener.ex

@@ -4,7 +4,18 @@ defmodule Radiator.Outline.NodeChangeListener do
   It is an eventconsumer that listens to changes in the outline and starts workers
   """
   use GenServer
+
+  alias Radiator.Outline.Event.{
+    NodeContentChangedEvent,
+    NodeDeletedEvent,
+    NodeInsertedEvent,
+    NodeMovedEvent
+  }
+
   alias Radiator.Outline.Dispatch
+  alias Radiator.UrlExtractor
+
+  require Logger
 
   def start_link(_) do
     GenServer.start_link(__MODULE__, :ok, [])
@@ -15,19 +26,37 @@ defmodule Radiator.Outline.NodeChangeListener do
     {:ok, []}
   end
 
-  def handle_info(%Radiator.Outline.Event.NodeContentChangedEvent{} = _event, state) do
+  def handle_info(%NodeContentChangedEvent{node_id: node_id, content: content}, state) do
+    Task.async(fn ->
+      scan_content_for_urls(node_id, content)
+    end)
+
+    {:noreply, state}
+  end
+
+  def handle_info(%NodeInsertedEvent{} = _event, state) do
     {:noreply, state}
   end
 
-  def handle_info(%Radiator.Outline.Event.NodeInsertedEvent{} = _event, state) do
+  def handle_info(%NodeMovedEvent{} = _event, state) do
     {:noreply, state}
   end
 
-  def handle_info(%Radiator.Outline.Event.NodeMovedEvent{} = _event, state) do
+  def handle_info(%NodeDeletedEvent{} = _event, state) do
     {:noreply, state}
   end
 
-  def handle_info(%Radiator.Outline.Event.NodeDeletedEvent{} = _event, state) do
+  def handle_info(_reference, state) do
+    Logger.warning("Unknown event type")
     {:noreply, state}
   end
+
+  def scan_content_for_urls(_node_id, content) do
+    result = UrlExtractor.extract_urls(content)
+    Logger.debug("Extracted #{Enum.count(result)} Urls!!")
+
+    Enum.each(result, fn info ->
+      Logger.debug("URL: #{info.url}")
+    end)
+  end
 end