Add new admin action to close public order

api/admin.py

@@ -11,6 +11,7 @@
 from api.logics import Logics
 from api.models import Currency, LNPayment, MarketTick, OnchainPayment, Order, Robot
 from api.utils import objects_to_hyperlinks
+from api.tasks import send_notification
 
 admin.site.unregister(Group)
 admin.site.unregister(User)
@@ -135,13 +136,45 @@ def _logs(self, obj):
         return format_html(f'<table style="width: 100%">{with_hyperlinks}</table>')
 
     actions = [
+        "cancel_public_order",
         "maker_wins",
         "taker_wins",
         "return_everything",
         "successful_trade",
         "compute_median_trade_time",
     ]
 
+    @admin.action(description="Close public order")
+    def cancel_public_order(self, request, queryset):
+        """
+        Closes an existing Public/Paused order.
+        """
+        for order in queryset:
+            if order.status in [Order.Status.PUB, Order.Status.PAU]:
+                if Logics.return_bond(order.maker_bond):
+                    order.update_status(Order.Status.UCA)
+                    self.message_user(
+                        request,
+                        f"Order {order.id} successfully closed",
+                        messages.SUCCESS,
+                    )
+                    send_notification.delay(
+                        order_id=order.id, message="coordinator_cancelled"
+                    )
+                else:
+                    self.message_user(
+                        request,
+                        f"Could not unlock bond of {order.id}",
+                        messages.ERROR,
+                    )
+
+            else:
+                self.message_user(
+                    request,
+                    f"Order {order.id} is not public or paused",
+                    messages.ERROR,
+                )
+
     @admin.action(description="Solve dispute: maker wins")
     def maker_wins(self, request, queryset):
         """

api/notifications.py

@@ -185,3 +185,9 @@ def new_chat_message(self, order, chat_message):
             self.send_message(user.robot.telegram_chat_id, text)
 
         return
+
+    def coordinator_cancelled(self, order):
+        if order.maker.robot.telegram_enabled:
+            text = f"🛠️ Your order with ID {order.id} has been cancelled by the coordinator {config('COORDINATOR_ALIAS', cast=str, default='NoAlias')} for the upcoming maintenance stop."
+            self.send_message(order.maker.robot.telegram_chat_id, text)
+        return

api/tasks.py

@@ -304,4 +304,7 @@ def send_notification(order_id=None, chat_message_id=None, message=None):
     elif message == "new_chat_message":
         telegram.new_chat_message(order, chat_message)
 
+    elif message == "coordinator_cancelled":
+        telegram.coordinator_cancelled(order)
+
     return