change offer list and add party model and serializer

core/apps/orders/models/party.py

@@ -6,10 +6,23 @@ from core.apps.accounts.models import User
 
 
 class Party(BaseModel):
+    number = models.PositiveIntegerField(default=1)
     orders = models.ManyToManyField(Order, related_name='parties', null=True, blank=True)
     mediator = models.ForeignKey(User, on_delete=models.CASCADE, related_name='parties')
+    # dates
     delivery_date = models.DateField()
+    coled_date = models.DateField(null=True, blank=True)
+    order_date = models.DateField(auto_now_add=True)
     payment_date = models.DateField()
+    
+    status = models.CharField(
+        max_length=20, choices=[('ORDERED', 'yetkazildi'), ('PROCESS', 'jarayonda')],
+        null=True, blank=True
+    )
+    payment_status = models.FloatField(null=True, blank=True)
+    process = models.FloatField(null=True, blank=True)
+    confirmation = models.BooleanField(default=False)
+
     comment = models.TextField(null=True, blank=True)
     audit = models.CharField(
         max_length=20, choices=[('CHECKED', 'tekshirildi'),('PROCESS', 'jarayonda')],
@@ -18,8 +31,34 @@ class Party(BaseModel):
     audit_comment = models.TextField(null=True, blank=True)
 
     def __str__(self):
-        return f'{self.mediator.full_name} {self.delivery_date}'
+        return str(self.number)
     
+    def save(self, *args, **kwargs):
+        if not self.pk:
+            last_party = Party.objects.order_by('number').last()
+            if last_party:
+                self.number = last_party.number + 1
+            else:
+                self.number = 1
+        return super().save(*args, **kwargs)
+
     class Meta:
         verbose_name = 'Partiya'
         verbose_name_plural = 'Partiyalar'
+
+
+class PartyAmount(BaseModel):
+    party = models.OneToOneField(Party, on_delete=models.CASCADE, related_name='party_amount')
+    total_price = models.PositiveBigIntegerField()
+    cost_amount = models.PositiveBigIntegerField(default=0)
+    calculated_amount = models.PositiveBigIntegerField(default=0)
+    paid_amount = models.PositiveBigIntegerField(default=0)
+    payment_amount = models.BigIntegerField(default=0)
+
+    def __str__(self):
+        return f'{self.party} amount'
+
+    class Meta:
+        verbose_name = 'Partiya Summasi'
+        verbose_name_plural = 'Partiya summalari'
+