feat: add auto refund feature for paypal

mubbsharanwar · mubbsharanwar · commit 8fe568709240 · 2024-12-17T12:50:31.000+05:00
diff --git a/commerce_coordinator/apps/commercetools/catalog_info/edx_utils.py b/commerce_coordinator/apps/commercetools/catalog_info/edx_utils.py
@@ -11,6 +11,7 @@
 
 from commerce_coordinator.apps.commercetools.catalog_info.constants import (
     EDX_STRIPE_PAYMENT_INTERFACE_NAME,
+    EDX_PAYPAL_PAYMENT_INTERFACE_NAME,
     PAYMENT_STATUS_INTERFACE_CODE_SUCCEEDED,
     EdXFieldNames,
     TwoUKeys
@@ -58,23 +59,22 @@ def get_edx_successful_stripe_payment(order: CTOrder) -> Union[CTPayment, None]:
     return None
 
 
-def get_edx_payment_intent_id(order: CTOrder) -> Union[str, None]:
-    pmt = get_edx_successful_stripe_payment(order)
-    if pmt:
-        return pmt.interface_id
-    return None
-
-
-# TODO update get_edx_successful_stripe_payment to accommodate this util logic
-# and replace it with that.
+# TODO remove get_edx_successful_stripe_payment if there is no more use.
 def get_edx_successful_payment_info(order: CTOrder):
     for pr in order.payment_info.payments:
         pmt = pr.obj
         if pmt.payment_status.interface_code == PAYMENT_STATUS_INTERFACE_CODE_SUCCEEDED and pmt.interface_id:
-            return pmt.interface_id, pmt.payment_method_info.payment_interface
+            return pmt, pmt.payment_method_info.payment_interface
     return None, None
 
 
+def get_edx_payment_intent_id(order: CTOrder) -> Union[str, None]:
+    pmt, _ = get_edx_successful_payment_info(order)
+    if pmt:
+        return pmt.interface_id
+    return None
+
+
 def get_edx_order_workflow_state_key(order: CTOrder) -> Optional[str]:
     order_workflow_state = None
     if order.state and order.state.obj:  # it should never be that we have one and not the other. # pragma no cover
@@ -88,7 +88,7 @@ def get_edx_is_sanctioned(order: CTOrder) -> bool:
 
 def get_edx_refund_amount(order: CTOrder) -> decimal:
     refund_amount = decimal.Decimal(0.00)
-    pmt = get_edx_successful_stripe_payment(order)
+    pmt, _ = get_edx_successful_payment_info(order)
     for transaction in pmt.transactions:
         if transaction.type == TransactionType.CHARGE:  # pragma no cover
             refund_amount += decimal.Decimal(typed_money_to_string(transaction.amount, money_as_decimal_string=True))
diff --git a/commerce_coordinator/apps/commercetools/pipeline.py b/commerce_coordinator/apps/commercetools/pipeline.py
@@ -12,9 +12,11 @@
 from openedx_filters.exceptions import OpenEdxFilterException
 from requests import HTTPError
 
-from commerce_coordinator.apps.commercetools.catalog_info.constants import EDX_STRIPE_PAYMENT_INTERFACE_NAME
+from commerce_coordinator.apps.commercetools.catalog_info.constants import (
+    EDX_STRIPE_PAYMENT_INTERFACE_NAME,
+    EDX_PAYPAL_PAYMENT_INTERFACE_NAME
+)
 from commerce_coordinator.apps.commercetools.catalog_info.edx_utils import (
-    get_edx_payment_intent_id,
     get_edx_refund_amount,
     get_edx_successful_payment_info
 )
@@ -110,12 +112,12 @@ def run_filter(self, active_order_management_system, order_number, **kwargs):  #
             duration = (datetime.now() - start_time).total_seconds()
             log.info(f"[Performance Check] get_order_by_number call took {duration} seconds")
 
-            intent_id, psp = get_edx_successful_payment_info(ct_order)
+            payment, psp = get_edx_successful_payment_info(ct_order)
 
             ret_val = {
                 "order_data": ct_order,
                 "psp": psp,
-                "payment_intent_id": intent_id
+                "payment_intent_id": payment.interface_id
             }
 
             return ret_val
@@ -156,21 +158,21 @@ def run_filter(self, active_order_management_system, order_id, **kwargs):  # pyl
             duration = (datetime.now() - start_time).total_seconds()
             log.info(f"[Performance Check] get_order_by_id call took {duration} seconds")
 
+            payment, psp = get_edx_successful_payment_info(ct_order)
+
             ret_val = {
                 "order_data": ct_order,
-                "order_id": ct_order.id
+                "order_id": ct_order.id,
+                "psp": psp,
+                "payment_intent_id": payment.interface_id
             }
 
-            intent_id = get_edx_payment_intent_id(ct_order)
-
-            if intent_id:
-                ct_payment = ct_api_client.get_payment_by_key(intent_id)
-                ret_val['payment_intent_id'] = intent_id
+            if payment:
+                ct_payment = ct_api_client.get_payment_by_key(payment.intent_id)
                 ret_val['amount_in_cents'] = get_edx_refund_amount(ct_order)
                 ret_val['has_been_refunded'] = has_refund_transaction(ct_payment)
                 ret_val['payment_data'] = ct_payment
             else:
-                ret_val['payment_intent_id'] = None
                 ret_val['amount_in_cents'] = decimal.Decimal(0.00)
                 ret_val['has_been_refunded'] = False
                 ret_val['payment_data'] = None
@@ -288,7 +290,7 @@ def run_filter(
 class CreateReturnPaymentTransaction(PipelineStep):
     """
     Creates a Transaction for a return payment of a Commercetools order
-    based on Stripes refund object on a refunded charge.
+    based on Stripes or PayPal refund object on a refunded charge.
     """
 
     def run_filter(
@@ -297,12 +299,13 @@ def run_filter(
         active_order_management_system,
         payment_data,
         has_been_refunded,
+        psp,
         **kwargs
     ):  # pylint: disable=arguments-differ
         """
         Execute a filter with the signature specified.
         Arguments:
-            refund_response: Stripe refund object or str value "charge_already_refunded"
+            refund_response: PSP refund object or str value "charge_already_refunded"
             active_order_management_system: The Active Order System
             payment_data: CT payment object attached to the refunded order
             has_been_refunded (bool): Has this payment been refunded
@@ -325,28 +328,37 @@ def run_filter(
         try:
             if payment_data is not None:
                 payment_on_order = payment_data
-            else:
+            elif psp == EDX_STRIPE_PAYMENT_INTERFACE_NAME:
                 payment_key = refund_response['payment_intent']
                 payment_on_order = ct_api_client.get_payment_by_key(payment_key)
+            elif psp == EDX_PAYPAL_PAYMENT_INTERFACE_NAME:
+                payment_on_order = ct_api_client.get_payment_by_transaction_interaction_id(refund_response['paypal_capture_id'])
 
             updated_payment = ct_api_client.create_return_payment_transaction(
                 payment_id=payment_on_order.id,
                 payment_version=payment_on_order.version,
-                refund=refund_response
+                refund=refund_response,
+                psp=psp,
             )
 
             return {
                 'returned_payment': updated_payment
             }
         except CommercetoolsError as err:  # pragma no cover
+            if psp == EDX_STRIPE_PAYMENT_INTERFACE_NAME:
+                error_message = f"[payment_intent_id: {refund_response['payment_intent']}, "
+            elif psp == EDX_PAYPAL_PAYMENT_INTERFACE_NAME:
+                error_message = f"[paypal_capture_id: {refund_response['paypal_capture_id']}, "
             log.info(f"[{tag}] Unsuccessful attempt to create refund payment transaction with details: "
-                     f"[stripe_payment_intent_id: {refund_response['payment_intent']}, "
+                     f"psp: {psp}, "
+                     f"{error_message}"
                      f"payment_id: {payment_on_order.id}], message_id: {kwargs['message_id']}")
             log.exception(f"[{tag}] Commercetools Error: {err}, {err.errors}")
             return PipelineCommand.CONTINUE.value
         except HTTPError as err:  # pragma no cover
             log.info(f"[{tag}] Unsuccessful attempt to create refund payment transaction with details: "
-                     f"[stripe_payment_intent_id: {refund_response['payment_intent']}, "
+                     f"psp: {psp}, "
+                     f"{error_message}"
                      f"payment_id: {payment_on_order.id}], message_id: {kwargs['message_id']}")
             log.exception(f"[{tag}] HTTP Error: {err}")
             return PipelineCommand.CONTINUE.value
diff --git a/commerce_coordinator/apps/commercetools/tests/test_pipeline.py b/commerce_coordinator/apps/commercetools/tests/test_pipeline.py
@@ -3,6 +3,7 @@
 from unittest import TestCase
 from unittest.mock import patch
 
+from commerce_coordinator.apps.commercetools.catalog_info.constants import EDX_STRIPE_PAYMENT_INTERFACE_NAME
 from commercetools.platform.models import ReturnInfo, ReturnPaymentState, ReturnShipmentState, TransactionType
 from django.contrib.auth import get_user_model
 from django.test import RequestFactory
@@ -146,7 +147,8 @@ def test_commercetools_transaction_create(self, mock_returned_payment, mock_paym
             payment_data=self.mock_response_payment,
             refund_response={"payment_intent": "mock_payment_intent"},
             active_order_management_system=COMMERCETOOLS_ORDER_MANAGEMENT_SYSTEM,
-            has_been_refunded=False
+            has_been_refunded=False,
+            psp=EDX_STRIPE_PAYMENT_INTERFACE_NAME
         )
         mock_payment_result = ret['returned_payment']
 
@@ -167,7 +169,8 @@ def test_commercetools_transaction_create_no_payment_data(self, mock_returned_pa
             payment_data=None,
             refund_response={"payment_intent": "mock_payment_intent"},
             active_order_management_system=COMMERCETOOLS_ORDER_MANAGEMENT_SYSTEM,
-            has_been_refunded=False
+            has_been_refunded=False,
+            psp=EDX_STRIPE_PAYMENT_INTERFACE_NAME
         )
         mock_payment_result = ret['returned_payment']
 
@@ -184,7 +187,8 @@ def test_commercetools_transaction_create_has_refund(self, mock_logger, mock_has
             payment_data=self.mock_response_payment,
             refund_response="charge_already_refunded",
             active_order_management_system=COMMERCETOOLS_ORDER_MANAGEMENT_SYSTEM,
-            has_been_refunded=True
+            has_been_refunded=True,
+            psp=EDX_STRIPE_PAYMENT_INTERFACE_NAME
         )
         mock_logger.assert_called_once_with('[CreateReturnPaymentTransaction] refund has already been processed, '
                                             'skipping refund payment transaction creation')
diff --git a/commerce_coordinator/apps/paypal/clients.py b/commerce_coordinator/apps/paypal/clients.py
@@ -0,0 +1,53 @@
+import logging
+
+from django.conf import settings
+from paypalserversdk.http.auth.o_auth_2 import ClientCredentialsAuthCredentials
+from paypalserversdk.logging.configuration.api_logging_configuration import (
+    LoggingConfiguration,
+    RequestLoggingConfiguration,
+    ResponseLoggingConfiguration,
+)
+from paypalserversdk.paypalserversdk_client import PaypalserversdkClient
+from paypalserversdk.controllers.orders_controller import OrdersController
+from paypalserversdk.controllers.payments_controller import PaymentsController
+from paypalserversdk.api_helper import ApiHelper
+
+
+class PayPalClient:
+    def __init__(self):
+        self.paypal_client: PaypalserversdkClient = PaypalserversdkClient(
+            client_credentials_auth_credentials=ClientCredentialsAuthCredentials(
+                o_auth_client_id=settings.PAYMENT_PROCESSOR_CONFIG['edx']['paypal']['client_id'],
+                o_auth_client_secret=settings.PAYMENT_PROCESSOR_CONFIG['edx']['paypal']['client_secret'],
+            ),
+            logging_configuration=LoggingConfiguration(
+                log_level=logging.INFO,
+                # Disable masking of sensitive headers for Sandbox testing.
+                # This should be set to True (the default if unset)in production.
+                mask_sensitive_headers=False,
+                request_logging_config=RequestLoggingConfiguration(
+                    log_headers=True, log_body=True
+                ),
+                response_logging_config=ResponseLoggingConfiguration(
+                    log_headers=True, log_body=True
+                ),
+            ),
+        )
+
+
+    def refund_order(self, order_id):
+        paypal_client = self.paypal_client
+        orders_controller: OrdersController = paypal_client.orders
+        payments_controller: PaymentsController = paypal_client.payments
+
+        order = orders_controller.orders_get({"id": order_id})
+
+        capture_id = order.body.purchase_units[0].payments.captures[0].id
+
+        collect = {"capture_id": capture_id, "prefer": "return=minimal"}
+        result = payments_controller.captures_refund(collect)
+
+        if result.body:
+            return {"paypal_capture_id": capture_id}
+        
+        return None
diff --git a/commerce_coordinator/apps/paypal/pipeline.py b/commerce_coordinator/apps/paypal/pipeline.py
@@ -6,10 +6,11 @@
 from urllib.parse import urlencode
 
 from django.conf import settings
+from commerce_coordinator.apps.paypal.clients import PayPalClient
+from commerce_coordinator.apps.core.constants import PipelineCommand
 from openedx_filters import PipelineStep
 
 from commerce_coordinator.apps.commercetools.catalog_info.constants import EDX_PAYPAL_PAYMENT_INTERFACE_NAME
-from commerce_coordinator.apps.core.constants import PipelineCommand
 
 logger = logging.getLogger(__name__)
 
@@ -30,3 +31,51 @@ def run_filter(self, psp=None, payment_intent_id=None, **params):
         return {
             'redirect_url': redirect_url,
         }
+
+
+class RefundPayPalPayment(PipelineStep):
+    """
+    Refunds a PayPal payment
+    """
+
+    def run_filter(
+        self,
+        order_id,
+        amount_in_cents,
+        has_been_refunded,
+        psp,
+        **kwargs
+    ):  # pylint: disable=arguments-differ
+        """
+        Execute a filter with the signature specified.
+        Arguments:
+            order_id (str): The identifier of the order.
+            amount_in_cents (decimal): Total amount to refund
+            has_been_refunded (bool): Has this payment been refunded
+            kwargs: arguments passed through from the filter.
+        """
+
+        tag = type(self).__name__
+
+        if psp != EDX_PAYPAL_PAYMENT_INTERFACE_NAME and not amount_in_cents:
+            return PipelineCommand.CONTINUE.value
+
+        if has_been_refunded:
+            logger.info(f'[{tag}] payment already refunded from psp: {psp}, skipping.')
+            return {
+                'refund_response': "charge_already_refunded"
+            }
+
+        paypal_client = PayPalClient()
+        try:
+            paypal_refund_response = paypal_client.refund_order(order_id=order_id)
+            return {
+                'refund_response': paypal_refund_response
+            }
+        except Exception as ex:
+            logger.info(f'[CT-{tag}] Unsuccessful PayPal refund with details:'
+                        f'[order_id: {order_id}'
+                        f'message_id: {kwargs["message_id"]}')
+            raise Exception from ex
+
+
diff --git a/commerce_coordinator/apps/stripe/pipeline.py b/commerce_coordinator/apps/stripe/pipeline.py
@@ -218,7 +218,7 @@ class GetPaymentIntentReceipt(PipelineStep):
     def run_filter(self, psp=None, payment_intent_id=None, **params):
         tag = type(self).__name__
 
-        if payment_intent_id is None:
+        if psp == EDX_STRIPE_PAYMENT_INTERFACE_NAME and payment_intent_id is None:
             logger.debug(f'[{tag}] payment_intent_id not set, skipping.')
             return PipelineCommand.CONTINUE.value
 
@@ -249,21 +249,22 @@ def run_filter(
         payment_intent_id,
         amount_in_cents,
         has_been_refunded,
+        psp,
         **kwargs
     ):  # pylint: disable=arguments-differ
         """
         Execute a filter with the signature specified.
         Arguments:
             order_id (str): The identifier of the order.
             payment_intent_id (str): The Stripe PaymentIntent id to look up.
-            amount_in_cents (decimal): Total amount to refund
+            refund_amount (decimal): Total amount to refund
             has_been_refunded (bool): Has this payment been refunded
             kwargs: arguments passed through from the filter.
         """
 
         tag = type(self).__name__
 
-        if not payment_intent_id or not amount_in_cents:  # pragma: no cover
+        if psp != EDX_STRIPE_PAYMENT_INTERFACE_NAME and not payment_intent_id or not amount_in_cents:  # pragma: no cover
             logger.info(f'[{tag}] payment_intent_id or amount_in_cents not set, skipping.')
             return PipelineCommand.CONTINUE.value
 
diff --git a/commerce_coordinator/settings/base.py b/commerce_coordinator/settings/base.py
@@ -395,6 +395,7 @@ def root(*path_fragments):
             'commerce_coordinator.apps.rollout.pipeline.DetermineActiveOrderManagementSystemByOrderID',
             'commerce_coordinator.apps.commercetools.pipeline.FetchOrderDetailsByOrderID',
             'commerce_coordinator.apps.stripe.pipeline.RefundPaymentIntent',
+            'commerce_coordinator.apps.paypal.pipeline.RefundPayPalPayment',
             'commerce_coordinator.apps.commercetools.pipeline.CreateReturnPaymentTransaction',
             'commerce_coordinator.apps.commercetools.pipeline.UpdateCommercetoolsOrderReturnPaymentStatus',
         ]
@@ -438,6 +439,8 @@ def root(*path_fragments):
         'paypal': {
             'user_activity_page_url': '',
             'paypal_webhook_id': PAYPAL_WEBHOOK_ID,
+            'client_id': '',
+            'client_secret': '',
         },
     },
 }
diff --git a/commerce_coordinator/settings/local.py b/commerce_coordinator/settings/local.py
@@ -147,6 +147,8 @@
         'paypal': {
             'user_activity_page_url': 'https://sandbox.paypal.com/myaccount/activities/',
             'paypal_webhook_id': 'SET-ME-PLEASE',
+            'client_id': '',
+            'client_secret': '',
         },
     },
 }
diff --git a/requirements/base.txt b/requirements/base.txt
@@ -147,6 +147,8 @@ openedx-filters==1.11.0
     # via -r requirements/base.in
 packaging==24.1
     # via marshmallow
+paypal-server-sdk==0.5.1
+    # via -r requirements/base.in
 pbr==6.1.0
     # via stevedore
 pillow==11.0.0

Original file line number	Diff line number	Diff line change
`@@ -147,6 +147,8 @@`
`147`	`147`	`'paypal': {`
`148`	`148`	`'user_activity_page_url': 'https://sandbox.paypal.com/myaccount/activities/',`
`149`	`149`	`'paypal_webhook_id': 'SET-ME-PLEASE',`
	`150`	`+ 'client_id': '',`
	`151`	`+ 'client_secret': '',`
`150`	`152`	`},`
`151`	`153`	`},`
`152`	`154`	`}`