first commit

core/apps/management/models/__init__.py

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+from .region import *
+from .device import *
+from .income import *
+from .district import *
+from .toyMovement import *
+from .warehouse import *
+from .expense import *
+from .rent import *

core/apps/management/models/device.py

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+from django.db import models
+from .district import District
+
+class Device(models.Model):
+    address = models.CharField(max_length=100, unique=True)
+    district = models.ForeignKey(District, on_delete=models.PROTECT)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    def __str__(self):
+        return self.address

core/apps/management/models/district.py

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+from django.db import models
+from .region import Region
+
+class District(models.Model):
+    region = models.ForeignKey(
+        Region,
+        on_delete=models.CASCADE,
+        related_name="districts"
+    )
+    name = models.CharField(max_length=100)
+
+    class Meta:
+        unique_together = ("region", "name")
+
+    def __str__(self):
+        return f"{self.name} — {self.region.name}"

core/apps/management/models/expense.py

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+from django.db import models
+from core.apps.management.models import Device
+
+class Expense(models.Model):
+    class ExpenseType(models.TextChoices):
+        RENT = "rent", "Ijara"
+        SALARY = "salary", "Maosh"
+        UTILITIES = "utilities", "Kommunal to‘lovlar"
+        MAINTENANCE = "maintenance", "Texnik xizmat"
+        FOOD = "food", "Oziq-ovqat"
+        TRANSPORT = "transport", "Yo'lkira"
+        BUY_TOYS = "buy_toys", "Oʻyinchoqlar sotib olish"
+        OTHER = "other", "Boshqa"
+
+    amount = models.DecimalField(max_digits=12, decimal_places=2)
+    expense_type = models.CharField(
+        max_length=20,
+        choices=ExpenseType.choices,
+        default=ExpenseType.OTHER,
+    )
+
+    # Conditional fields
+    employee = models.ForeignKey("accounts.User", related_name="salaries", null=True, blank=True, on_delete=models.PROTECT)
+    device = models.ForeignKey(Device, null=True, blank=True, on_delete=models.PROTECT)
+
+    created_by = models.ForeignKey("accounts.User", on_delete=models.PROTECT)
+    confirmed_by = models.ForeignKey(
+        "accounts.User", on_delete=models.PROTECT,
+        null=True, blank=True, related_name="confirmed_expenses"
+    )
+
+    is_confirmed = models.BooleanField(default=False)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    def clean(self):
+        from django.core.exceptions import ValidationError
+
+        # Salary requires employee
+        if self.expense_type == self.ExpenseType.SALARY and not self.employee:
+            raise ValidationError({"employee": "Employee must be set for Salary expenses."})
+
+        # Device required for rent/utilities/maintenance
+        if self.expense_type in [
+            self.ExpenseType.RENT,
+            self.ExpenseType.MAINTENANCE
+        ] and not self.device:
+            raise ValidationError({"device": "Device must be set for this type of expense."})

core/apps/management/models/income.py

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+from django.db import models
+from .device import Device
+
+class Income(models.Model):
+    device = models.ForeignKey(Device, related_name='incomes',on_delete=models.PROTECT)
+    amount = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
+    created_by = models.ForeignKey("accounts.User", on_delete=models.PROTECT, related_name="created_incomes")
+
+    is_confirmed = models.BooleanField(default=False)
+    created_at = models.DateTimeField(auto_now_add=True)

core/apps/management/models/region.py

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+from django.db import models
+
+class Region(models.Model):
+    name = models.CharField(max_length=100, unique=True)
+
+    def __str__(self):
+        return self.name

core/apps/management/models/rent.py

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+from django.db import models
+from .district import District
+from .device import Device
+
+class Rent(models.Model):
+    address = models.CharField(max_length=100, unique=True)
+    district = models.ForeignKey(District, related_name="district_rents", on_delete=models.PROTECT)
+    device = models.ForeignKey(Device, related_name="device_rents", on_delete=models.PROTECT)
+    due_date = models.DateField()
+    amount = models.IntegerField()
+
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    def __str__(self):
+        return self.address

core/apps/management/models/toyMovement.py

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+from django.db import models
+from .device import Device
+from .warehouse import Warehouse
+from ..choice import TOY_MOVEMENT_TYPE
+
+class ToyMovement(models.Model):
+    movement_type = models.CharField(max_length=30, choices=TOY_MOVEMENT_TYPE)
+    from_warehouse = models.ForeignKey(
+        Warehouse, on_delete=models.PROTECT,
+        related_name="outgoing"
+    )
+    to_warehouse = models.ForeignKey(
+        Warehouse, on_delete=models.PROTECT,
+        related_name="incoming",
+        null=True, blank=True
+    )
+    device = models.ForeignKey(
+        Device, on_delete=models.PROTECT,
+        null=True, blank=True
+    )
+    quantity = models.PositiveIntegerField()
+    created_by = models.ForeignKey("accounts.User", on_delete=models.PROTECT)
+    created_at = models.DateTimeField(auto_now_add=True)

core/apps/management/models/warehouse.py

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+from django.db import models
+from .region import Region
+
+class Warehouse(models.Model):
+    name = models.CharField(max_length=100, unique=True)
+    region = models.ForeignKey(
+        Region,
+        on_delete=models.PROTECT,
+        related_name="warehouses"
+    )
+    toys_count = models.PositiveIntegerField(default=0)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    def __str__(self):
+        return self.name