Create payment_gateway.py

src/payment/payment_gateway.py

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+import uuid
+import time
+from cryptography.fernet import Fernet
+from notification import Notification
+
+class PaymentGateway:
+    def __init__(self):
+        self.payments = {}  # payment_id -> Payment
+        self.notification_service = Notification()
+
+    def initiate_payment(self, amount, currency, payer, receiver, recurring=False, interval=None):
+        payment_id = str(uuid.uuid4())
+        payment = Payment(payment_id, amount, currency, payer, receiver, recurring, interval)
+        self.payments[payment_id] = payment
+        self.notification_service.send_notification(payer, f"Payment initiated: {payment_id} for {amount} {currency} from {payer} to {receiver}.")
+        print(f"Payment initiated: {payment_id} for {amount} {currency} from {payer} to {receiver}.")
+        return payment_id
+
+    def get_payment_status(self, payment_id):
+        payment = self.payments.get(payment_id)
+        if payment:
+            return payment.status
+        return "Payment not found."
+
+    def complete_payment(self, payment_id):
+        payment = self.payments.get(payment_id)
+        if payment and payment.status == "Pending":
+            payment.status = "Completed"
+            payment.timestamp = time.time()
+            self.notification_service.send_notification(payment.receiver, f"Payment {payment_id} completed.")
+            print(f"Payment {payment_id} completed.")
+        else:
+            print(f"Payment {payment_id} cannot be completed or does not exist.")
+
+    def process_recurring_payments(self):
+        for payment in self.payments.values():
+            if payment.recurring and payment.status == "Pending":
+                self.complete_payment(payment.payment_id)
+
+class Payment:
+    def __init__(self, payment_id, amount, currency, payer, receiver, recurring=False, interval=None):
+        self.payment_id = payment_id
+        self.amount = amount
+        self.currency = currency
+        self.payer = payer
+        self.receiver = receiver
+        self.status = "Pending"
+        self.timestamp = None
+        self.recurring = recurring
+        self.interval = interval  # e.g., "monthly", "weekly"