gold eggs backend

core/apps/eggs/models/party.py

@@ -0,0 +1,85 @@
+"""
+Party model
+"""
+
+from django.db import models
+from django.db.models import Sum
+
+from core.http.models import base
+from core.http.models.user import User
+
+
+class Party(base.AbstractBaseModel):
+    user_id = models.ForeignKey(
+        to=User, on_delete=models.CASCADE, related_name="parties"
+    )
+    # umumiy soni
+    count = models.IntegerField(default=0, null=True, blank=True)
+    # sotilgan soni
+    sold_count = models.IntegerField(default=0, null=True, blank=True)
+    # qolgan soni
+    remaining_count = models.IntegerField(default=0, null=True, blank=True)
+    # tushum
+    benefit = models.DecimalField(
+        max_digits=30, decimal_places=2, default=0, null=True, blank=True
+    )
+    # foyda
+    profit = models.DecimalField(
+        max_digits=30, decimal_places=2, default=0, null=True, blank=True
+    )
+    # partiya narxi
+    cost = models.DecimalField(
+        max_digits=30, decimal_places=2, default=0, null=True, blank=True
+    )
+    # umumiy narxi
+    total_cost = models.DecimalField(
+        max_digits=30, decimal_places=2, default=0, null=True, blank=True
+    )
+    broken_eggs = models.IntegerField(default=0, null=True, blank=True)
+    courier_eggs = models.IntegerField(default=0, null=True, blank=True)
+
+    @staticmethod
+    def get_total_benefit():
+        return Party.objects.aggregate(
+            total_count=Sum("count"),  # umumiy mahsulot soni
+            total_sold_count=Sum(
+                "sold_count"
+            ),  # umumiy sotilgan mahsulot soni
+            total_remaining_count=Sum(
+                "remaining_count"
+            ),  # umumiy qolgan mahsulot soni
+            total_broken_eggs=Sum("broken_eggs"),  # umumiy singan soni
+            total_courier_eggs=Sum(
+                "courier_eggs"
+            ),  # umumiy kuryerlar tomonidan olingan soni
+        )
+
+    def clean(self):
+        if self.count < 0:
+            raise ValueError("Count can't be negative")
+        if self.sold_count < 0:
+            raise ValueError("Sold count can't be negative")
+        if self.remaining_count < 0:
+            raise ValueError("Remaining count can't be negative")
+        if self.benefit < 0:
+            raise ValueError("Benefit can't be negative")
+        if self.cost < 0:
+            raise ValueError("Cost can't be negative")
+        if self.total_cost < 0:
+            raise ValueError("Total cost can't be negative")
+
+    def update_total_cost(self):
+        total_invoice_price = (
+            self.invoices.aggregate(Sum("price"))["price__sum"] or 0
+        )
+        self.total_cost = self.cost + total_invoice_price
+        self.profit -= total_invoice_price
+        self.save()
+
+    def __str__(self):
+        return f"User - {self.user_id}, price - {self.benefit}"
+
+    class Meta:
+        verbose_name = "Party"
+        verbose_name_plural = "Parties"
+        db_table = "party"