Initial commit

billing/models.py

@@ -0,0 +1,51 @@
+from django.db import models
+from django.utils import timezone
+from api.models import User
+
+# Create your models here.
+
+from devices.models import Device
+# Create your models here.
+
+class Payment(models.Model):
+    PAYMENT_TYPES = [
+        ('WALLET', 'Wallet'),
+        ('TRANSFER', 'Transfer'),
+    ]
+
+    id = models.CharField(primary_key=True, max_length=255)
+    number_of_months = models.IntegerField()
+    amount = models.FloatField()
+    paid = models.BooleanField(default=False)
+    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='payments')
+    paid_at = models.DateTimeField(null=True, blank=True)
+    method = models.CharField(max_length=255, choices=PAYMENT_TYPES, default='TRANSFER')
+    expires_at = models.DateTimeField(null=True, blank=True)
+    created_at = models.DateTimeField(default=timezone.now)
+    updated_at = models.DateTimeField(auto_now=True)
+    devices = models.ManyToManyField(Device, related_name='payments')
+
+    def __str__(self):
+        return f"Payment by {self.user}"
+
+class BillFormula(models.Model):
+    id = models.CharField(primary_key=True, max_length=255)
+    formula = models.CharField(max_length=255)
+    base_amount = models.FloatField()
+    discount_percentage = models.FloatField()
+    created_at = models.DateTimeField(default=timezone.now)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    def __str__(self):
+        return self.formula
+
+class Topup(models.Model):
+    id = models.CharField(primary_key=True, max_length=255)
+    amount = models.FloatField()
+    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='topups')
+    paid = models.BooleanField(default=False)
+    created_at = models.DateTimeField(default=timezone.now)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    def __str__(self):
+        return f"Topup for {self.user}"