fix(events): prevent resuming unavailable registrations

apps/events/api/views.py

@@ -809,7 +809,7 @@ def _my_registration_checkout_fields(registration, now):
             checkout_state = "legacy_pending"
         elif registration.checkout_expires_at > now:
             checkout_state = "active"
-            can_resume = not bool(payment and payment.verification_manual_review_at)
+            can_resume = _can_resume_registration(registration, payment)
         else:
             checkout_state = "expired"
     elif registration.status == Registration.StatusChoices.CANCELLED:
@@ -845,6 +845,17 @@ def _my_registration_checkout_fields(registration, now):
     }
 
 
+def _can_resume_registration(registration, payment):
+    if payment and payment.verification_manual_review_at:
+        return False
+    event = registration.event
+    return bool(
+        event.status == Event.StatusChoices.PUBLISHED
+        and event.is_registration_open
+        and (event.capacity is None or event.current_attendees_count <= event.capacity)
+    )
+
+
 @events_router.get("/my-registrations/paginated", response=PaginatedMyEventRegistrationsSchema, auth=jwt_auth)
 def my_registrations_paginated(
     request,
@@ -962,7 +973,7 @@ def is_registered(request, event_id: int):
             checkout_state = "legacy_pending"
         elif registration.checkout_expires_at > now:
             checkout_state = "active"
-            can_resume = not bool(payment and payment.verification_manual_review_at)
+            can_resume = _can_resume_registration(registration, payment)
             can_cancel = True
         else:
             checkout_state = "expired"
@@ -1174,7 +1185,7 @@ def registration_hub_status(
         state == "active_checkout"
         and registration
         and registration.status == Registration.StatusChoices.PENDING
-        and (payment is None or not payment.verification_manual_review_at)
+        and _can_resume_registration(registration, payment)
     )
     can_cancel = bool(
         state == "active_checkout"