feat: changed TPV behaviour

2025-01-12 22:40:46 +01:00
parent fc0cdad246
commit a733325529
43 changed files with 1036 additions and 1100 deletions
@@ -0,0 +1,209 @@
+import base64
+import json
+from decimal import Decimal
+
+import requests
+from django.conf import settings
+from django.urls import reverse
+
+from shop.exceptions import RedsysPaymentException
+from shop.models import Order, Payment
+from shop.settings import TransactionTypes
+from shop.utils import compute_signature, decode_b64_dict
+
+
+class RedsysClient:
+    DEBUG_ENVIRONMENT_URL = "https://sis-t.redsys.es:25443/sis/realizarPago"
+    PROD_ENVIRONMENT_URL = "https://sis.redsys.es/sis/realizarPago"
+
+    REST_DEBUG_ENVIRONMENT_URL = (
+        "https://sis-t.redsys.es:25443/sis/rest/trataPeticionREST"
+    )
+    REST_PROD_ENVIRONMENT_URL = "https://sis.redsys.es/sis/rest/trataPeticionREST"
+
+    def get_target_url(self):
+        if settings.DEBUG:
+            return self.DEBUG_ENVIRONMENT_URL
+        return self.PROD_ENVIRONMENT_URL
+
+    def get_rest_target_url(self):
+        if settings.DEBUG:
+            return self.REST_DEBUG_ENVIRONMENT_URL
+        return self.REST_PROD_ENVIRONMENT_URL
+
+    def get_merchant_code(self) -> str:
+        return settings.REDSYS_MERCHANT_CODE
+
+    def get_terminal(self) -> str:
+        return settings.REDSYS_TERMINAL
+
+    def get_currency_code(self) -> str:
+        return settings.REDSYS_CURRENCY_CODE
+
+    def get_merchant_url_ok_for_order(self, order: Order) -> str:
+        path = reverse("web:order", kwargs={"uuid": order.uuid})
+        return f"{settings.REDSYS_TPV_DOMAIN}{path}"
+
+    def to_integer(self, value: Decimal):
+        return int(value * 100)
+
+    def get_merchant_url_ko_for_order(self, order: Order) -> str:
+        path = reverse("web:order", kwargs={"uuid": order.uuid})
+        return f"{settings.REDSYS_TPV_DOMAIN}{path}"
+
+    def get_webhook_url_for_order(self, order: Order) -> str:
+        path = reverse("shop:webhook", kwargs={"uuid": order.uuid})
+        return f"{settings.REDSYS_TPV_DOMAIN}{path}"
+
+    def get_shared_secret(self) -> str:
+        return settings.REDSYS_SHARED_SECRET
+
+    def get_signature(self, hash, payload: str):
+        key = self.get_shared_secret()
+        return compute_signature(str(hash), payload, key).decode()
+
+    def _get_merchant_parameters_for_order(
+        self,
+        order: Order,
+        order_type: int = TransactionTypes.AUTHORIZATION,
+    ) -> dict:
+        merchant_code = self.get_merchant_code()
+
+        return {
+            "DS_MERCHANT_AMOUNT": str(self.to_integer(order.total)),
+            "DS_MERCHANT_CURRENCY": self.get_currency_code(),
+            "DS_MERCHANT_MERCHANTCODE": merchant_code,
+            # Webhook
+            "DS_MERCHANT_MERCHANTURL": self.get_webhook_url_for_order(order),
+            "DS_MERCHANT_ORDER": order.code,
+            "DS_MERCHANT_TERMINAL": self.get_terminal(),
+            "DS_MERCHANT_TRANSACTIONTYPE": order_type,
+            # Página informativa al usuario - Pago erróneo
+            "DS_MERCHANT_URLKO": self.get_merchant_url_ko_for_order(order),
+            # Página informativa al usuario - Pago confirmado
+            "DS_MERCHANT_URLOK": self.get_merchant_url_ok_for_order(order),
+        }
+
+    def _get_encoded_merchant_parameters_for_order(
+        self,
+        order: Order,
+        order_type: int = TransactionTypes.AUTHORIZATION,
+    ) -> str:
+        body = self._get_merchant_parameters_for_order(order, order_type)
+        return self._encode_body(body)
+
+    def get_body_for_order(
+        self,
+        order: Order,
+        order_type: int = TransactionTypes.AUTHORIZATION,
+    ) -> dict:
+        merchant_parameters = self._get_encoded_merchant_parameters_for_order(
+            order, order_type
+        )
+        signature = self.get_signature(order.code, merchant_parameters)
+
+        return {
+            "Ds_MerchantParameters": merchant_parameters,
+            "Ds_SignatureVersion": "HMAC_SHA256_V1",
+            "Ds_Signature": signature,
+        }
+
+    def _encode_body(self, value):
+        stringified_body = json.dumps(value)
+        return base64.b64encode(stringified_body.encode()).decode("utf-8")
+
+    def _get_rest_merchant_parameters_for_order(
+        self,
+        order: Order,
+        pan: str,
+        expiry_date: str,
+        cvv2: str,
+        order_type: int = TransactionTypes.AUTHORIZATION,
+    ) -> dict:
+        merchant_code = self.get_merchant_code()
+
+        return {
+            "DS_MERCHANT_AMOUNT": str(self.to_integer(order.total)),
+            "DS_MERCHANT_CURRENCY": self.get_currency_code(),
+            "DS_MERCHANT_CVV2": cvv2,
+            "DS_MERCHANT_EXPIRYDATE": expiry_date,
+            "DS_MERCHANT_MERCHANTCODE": merchant_code,
+            "DS_MERCHANT_ORDER": order.uuid.hex,
+            "DS_MERCHANT_PAN": pan,
+            "DS_MERCHANT_TERMINAL": "1",
+            "DS_MERCHANT_TRANSACTIONTYPE": order_type,
+        }
+
+    def _get_rest_encoded_merchant_parameters_for_order(
+        self,
+        order: Order,
+        pan: str,
+        expiry_date: str,
+        cvv2: str,
+        order_type: int = TransactionTypes.AUTHORIZATION,
+    ) -> str:
+        body = self._get_rest_merchant_parameters_for_order(
+            order,
+            pan=pan,
+            expiry_date=expiry_date,
+            cvv2=cvv2,
+            order_type=order_type,
+        )
+        return self._encode_body(body)
+
+    def _get_rest_body_for_order(
+        self,
+        order: Order,
+        pan: str,
+        expiry_date: str,
+        cvv2: str,
+        order_type: int = TransactionTypes.AUTHORIZATION,
+    ) -> dict:
+        merchant_parameters = self._get_rest_encoded_merchant_parameters_for_order(
+            order=order,
+            pan=pan,
+            expiry_date=expiry_date,
+            cvv2=cvv2,
+            order_type=order_type,
+        )
+        signature = self.get_signature(order.code, merchant_parameters)
+
+        return {
+            "Ds_MerchantParameters": merchant_parameters,
+            "Ds_SignatureVersion": "HMAC_SHA256_V1",
+            "Ds_Signature": signature,
+        }
+
+    def make_request_for_order(
+        self,
+        order: Order,
+        pan: str,
+        expiry_date: str,
+        cvv2: str,
+        order_type: int = TransactionTypes.AUTHORIZATION,
+    ):
+        body = self._get_rest_body_for_order(
+            order=order,
+            pan=pan,
+            expiry_date=expiry_date,
+            cvv2=cvv2,
+            order_type=order_type,
+        )
+        url = self.get_rest_target_url()
+        response = requests.post(url, body)
+        return response
+
+    def pay_order_rest(self, order: Order, pan: str, expiry_date: str, cvv2: str):
+        response = self.make_request_for_order(order, pan, expiry_date, cvv2)
+        data = response.json()
+        error_code: str = data.get("errorCode", "")
+
+        if error_code:
+            error_code.replace("SIS0", "0")
+
+            raise RedsysPaymentException(error_code)
+
+        merchant_parameters = data.get("Ds_MerchantParameters")
+        parameters = decode_b64_dict(merchant_parameters)
+
+        return parameters