option to hide admin footer

#252 The :admin_footer can be specified in app config

Author: aesmail

Diff for: lib/kaffy/utils.ex

@@ -9,6 +9,14 @@ defmodule Kaffy.Utils do
     env(:admin_title, "Kaffy")
   end
 
+  @doc """
+  Returns the :admin_footer config if present, otherwise returns default copyright.
+  """
+  @spec footer() :: String.t() | {:safe, String.t()}
+  def footer() do
+    env(:admin_footer, "Copyright © 2022 Kaffy. All rights reserved.")
+  end
+
   @doc """
   Returns the static path to the asset.
   """

Diff for: lib/kaffy_web/templates/layout/app.html.eex

@@ -155,7 +155,9 @@
 
           <footer class="footer">
             <div class="d-sm-flex justify-content-center justify-content-sm-between">
-              <span class="text-muted text-center text-sm-left d-block d-sm-inline-block">Copyright © 2022 Kaffy. All rights reserved.</span>
+              <%= if copyright = Kaffy.Utils.footer() do %>
+                <span class="text-muted text-center text-sm-left d-block d-sm-inline-block"><%= copyright %></span>
+              <% end %>
             </div>
           </footer>