update

inventory/models.py

@@ -648,6 +648,9 @@ class SaleQuotation(models.Model):
         ("DRAFT", _("Draft")),
         ("CONFIRMED", _("Confirmed")),
         ("CANCELED", _("Canceled")),
+        ("EXPIRED", _("Expired")),
+        ("PARTIALLY", _("Partially")),
+        ("COMPLETED", _("Completed")),
     ]
     dealer = models.ForeignKey(
         Dealer, on_delete=models.CASCADE, related_name="sales", null=True
@@ -827,7 +830,7 @@ class Payment(models.Model):
         verbose_name_plural = _("payments")
 
     def __str__(self):
-        return f"Payment of {self.amount} on {self.date} for {self.order}"
+        return f"Payment of {self.amount} on {self.payment_date} for {self.quotation}"
 
 
 class Refund(models.Model):

inventory/signals.py

@@ -1,7 +1,8 @@
 from random import randint
 
-from django.db.models.signals import post_save, post_delete,pre_delete
+from django.db.models.signals import post_save, post_delete, pre_delete, pre_save
 from django.dispatch import receiver
+from django.utils import timezone
 from django_ledger.models import EntityModel
 from django.utils.translation import gettext_lazy as _
 
@@ -251,3 +252,26 @@ def create_customer(sender, instance, created, **kwargs):
 #         default_amount=instance.cost_price,
 #     )
 #     print(f"Inventory item updated with CarFinance data for Car: {instance.car}")
+
+
+@receiver(pre_save, sender=models.SaleQuotation)
+def update_quotation_status(sender, instance, **kwargs):
+    if instance.valid_until and timezone.now() > instance.valid_until:
+        instance.status = 'expired'
+    # instance.total_price = instance.calculate_total_price()
+
+
+@receiver(post_save, sender=models.Payment)
+def update_status_on_payment(sender, instance, created, **kwargs):
+    if created:
+        quotation = instance.sale_quotation
+        total_payments = sum(payment.amount for payment in quotation.payments.all())
+        if total_payments >= quotation.amount:
+            quotation.status = 'completed'
+            # SalesInvoice.objects.create(sales_order=order)
+        elif total_payments > 0:
+            quotation.status = 'partially_paid'
+        else:
+            quotation.status = 'pending'
+        quotation.save()
+