fix - set exception in org_quota_stat signal

apps/product/signals.py

@@ -4,6 +4,7 @@ from django.db import models
 from django.db.models import Sum, Q
 from django.db.models.signals import post_save, post_delete, post_init
 from django.dispatch import receiver
+from rest_framework import status
 
 from apps.product.validators.quota_stats_validator import QuotaStatsValidator
 from apps.warehouse.models import (
@@ -11,6 +12,7 @@ from apps.warehouse.models import (
     InventoryEntry
 )
 from common.helpers import get_organization_by_user
+from .exceptions import QuotaException
 from .models import (
     QuotaDistribution,
     Quota,
@@ -326,6 +328,11 @@ def organization_quota_stats(sender, instance: Quota, created: bool, **kwargs):
         total=Sum('weight')
     )['total'] or 0
     org_quota_stat.remaining_amount = org_quota_stat.total_amount - org_quota_stat.total_distributed
+    if org_quota_stat.remaining_amount < 0:
+        raise QuotaException(
+            "وزن سهمیه نباید از مقدار توزیع شده کمتر باشد",  # noqa
+            status.HTTP_403_FORBIDDEN
+        )
     org_quota_stat.save(update_fields=['total_amount', 'total_distributed', 'sold_amount', 'remaining_amount'])
 
     # delete quota