Initial commit

payment/models.py

@@ -0,0 +1,38 @@
+from django.db import models
+
+
+class Order(models.Model):
+    """
+    تنها اپی که واقعاً پول جابه‌جا می‌کنه. عمداً از Subscription جدا شده
+    چون منطق و ریسکش فرق داره (درگاه، retry، idempotency).
+    """
+    STATUS_CHOICES = [('pending', 'در انتظار'), ('paid', 'پرداخت‌شده'), ('failed', 'ناموفق')]
+
+    user_id = models.IntegerField(db_index=True)  # ارجاع سبک به accounts.User
+    subscription_id = models.IntegerField(null=True, blank=True)  # ارجاع سبک به subscription.Subscription
+    amount = models.PositiveIntegerField()
+    currency = models.CharField(max_length=10, default='IRT')
+    status = models.CharField(max_length=10, choices=STATUS_CHOICES, default='pending')
+    idempotency_key = models.CharField(max_length=100, unique=True)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        ordering = ['-created_at']
+
+    def __str__(self):
+        return f"order-{self.pk}-user{self.user_id}"
+
+
+class Transaction(models.Model):
+    order = models.ForeignKey(Order, on_delete=models.CASCADE, related_name='transactions')
+    gateway = models.CharField(max_length=30, default='zarinpal')
+    gateway_ref_id = models.CharField(max_length=100, blank=True)
+    status = models.CharField(max_length=30)
+    paid_at = models.DateTimeField(null=True, blank=True)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        ordering = ['created_at']
+
+    def __str__(self):
+        return f"txn-{self.pk}-order{self.order_id}"