Add expected restoration date setting

app/views/layouts/_offline_flash.erb

@@ -9,6 +9,15 @@
     </p>
   <% end %>
 
+  <% if Settings.status_expected_restore_date %>
+    <% expected_restore_time = Time.parse(Settings.status_expected_restore_date).utc %>
+    <% if expected_restore_time > Time.now.utc %>
+      <p class="mb-0">
+        <%= t ".expected_restore_html", :time => friendly_date(expected_restore_time) %>
+      </p>
+    <% end %>
+  <% end %>
+
   <% if Settings.status_announcement_url %>
     <p class="mb-0">
       <%= link_to t(".announcement"), Settings.status_announcement_url %>

config/locales/en.yml

@@ -1587,6 +1587,7 @@ en:
     offline_flash:
       osm_offline: "The OpenStreetMap database is currently offline while essential database maintenance work is carried out."
       osm_read_only: "The OpenStreetMap database is currently in read-only mode while essential database maintenance work is carried out."
+      expected_restore_html: "Services are expected to be restored in %{time}."
       announcement: "You can read the announcement here."
   user_mailer:
     diary_comment_notification:

config/settings.yml

@@ -23,6 +23,8 @@ api_version: "0.6"
 #   database_offline - database offline with site in emergency mode
 #   gpx_offline - gpx storage offline
 status: "online"
+# Expected services restoration date added to offline flash messages
+#status_expected_restore_date: "2024-12-18 12:00:00Z"
 # Application status announcement url added to offline flash messages
 #status_announcement_url: "https://en.osm.town/@osm_tech"
 # The maximum area you're allowed to request, in square degrees