Fix UiWeb.Endpoint module not found in morse.

morse/lib/morse/server.ex

@@ -37,6 +37,6 @@ defmodule Morse.Server do
   end
 
   defp broadcast_progress(progress) do
-    UiWeb.Endpoint.broadcast("morse:progress", "update", %{value: progress})
+    GenServer.cast(Ui.SocketAPI, {:broadcast_progress, progress})
   end
 end

ui/lib/ui/application.ex

@@ -9,7 +9,8 @@ defmodule Ui.Application do
     # List all child processes to be supervised
     children = [
       # Start the endpoint when the application starts
-      UiWeb.Endpoint
+      UiWeb.Endpoint,
+      Ui.SocketAPI
       # Starts a worker by calling: Ui.Worker.start_link(arg)
       # {Ui.Worker, arg},
     ]

ui/lib/ui/socket_api.ex

@@ -0,0 +1,18 @@
+defmodule Ui.SocketAPI do
+  use GenServer
+
+  def start_link(_) do
+    GenServer.start_link(__MODULE__, nil, name: __MODULE__)
+  end
+
+  @impl true
+  def init(state) do
+    {:ok, state}
+  end
+
+  @impl true
+  def handle_cast({:broadcast_progress, progress}, state) do
+    UiWeb.Endpoint.broadcast("morse:progress", "update", %{value: progress})
+    {:noreply, state}
+  end
+end