load config from server instead of config file

lib/myapp_web/controllers/config_controller.ex

@@ -0,0 +1,15 @@
+defmodule MyAppWeb.ConfigController do
+  use MyAppWeb, :controller
+  alias MyAppWeb.Response
+  alias MyApp.Data
+
+  def get_config(conn, _params) do
+    output = %{
+      "client_id": Application.get_env(:myapp, :bnet_client_id),
+      "redirect_uri": Application.get_env(:myapp, :bnet_redirect_uri),
+    }
+    conn
+    |> put_status(200)
+    |> Response.json(output)
+  end
+end

lib/myapp_web/router.ex

@@ -22,6 +22,8 @@ defmodule MyAppWeb.Router do
   scope "/api", MyAppWeb do
     pipe_through [:api]
 
+    get "/config", ConfigController, :get_config
+
     scope "/user" do
       post "/authorize", UserController, :authorize
       post "/login", UserController, :login