overhaul of paypal handler WIP

backend/src/payments/payment_handler.py

@@ -4,6 +4,9 @@ from pydantic import BaseModel
 from fastapi import HTTPException
 import logging
 
+import requests
+from ..configuration.environment import Environment
+
 
 # Model for payment request body
 class PaymentRequest(BaseModel):
@@ -14,13 +17,22 @@ class PaymentRequest(BaseModel):
 
 
 # Payment handler class for managing PayPal payments
-class PaymentHandler:
+class PaypalHandler:
 
-    payment_id: str
+    # PayPal secrets
+    username = Environment.paypal_id_sandbox
+    password = Environment.paypal_key_sandbox
 
-    def __init__(self, transaction_details: PaymentRequest):
+
+
+    def __init__(
+            self,
+            transaction_details: PaymentRequest,
+            sandbox_mode: bool = False
+            ):
         self.details = transaction_details
         self.logger = logging.getLogger(__name__)
+        self.sandbox = sandbox_mode
 
     # Only support purchase of credit 'bundles': 10, 50 or 100 credits worth of trip generation
     def fetch_price(self) -> float:
@@ -34,37 +46,40 @@ class PaymentHandler:
             self.logger.error(f"Unsupported currency: {self.details.currency}")
             return None
 
-    def create_paypal_payment(self) -> str:
-        """
-        Creates a PayPal payment and returns the approval URL.
-        """
-        price = self.fetch_price()
-        payment = paypalrestsdk.Payment({
-            "intent": "sale",
-            "payer": {
-                "payment_method": "paypal"
-            },
-            "transactions": [{
-                "amount": {
-                    "total": f"{price:.2f}",
-                    "currency": self.details.currency
-                },
-                "description": self.details.description
-            }],
-            "redirect_urls": {
-                "return_url": "http://localhost:8000/payment/success",
-                "cancel_url": "http://localhost:8000/payment/cancel"
-            }
-        })
 
-        if payment.create():
-            self.logger.info("Payment created successfully")
-            self.payment_id = payment.id
+    def validate(self):
 
-            # Get the approval URL and return it for the user to approve
-            for link in payment.links:
-                if link.rel == "approval_url":
-                    return link.href
-        else:
-            self.logger.error(f"Failed to create payment: {payment.error}")
-            raise HTTPException(status_code=500, detail="Payment creation failed")
+        if self.sandbox :
+            validation_url = "https://api-m.sandbox.paypal.com/v1/oauth2/token"
+        else :
+            validation_url = "https://api-m.paypal.com/v1/oauth2/token"
+
+        # payload for the validation request
+        validation_data = {'grant_type': 'client_credentials'}
+
+        # pass the request
+        validation_response = requests.post(
+            url=validation_url,
+            data=validation_data,
+            auth=(self.username, self.password)
+        )
+
+        # TODO: continue here
+
+
+        pass
+
+    def order(self):
+
+
+        pass
+
+    def capture(self):
+
+
+        pass
+
+
+    def cancel(self):
+               
+        pass