feat: add get payments and orders

src/application/commands/payment_read_commands.py

@@ -91,6 +91,24 @@ class ListPaymentsCommand:
         return payments
 
 
+class GetPaymentCommand:
+    def __init__(self, *, unit_of_work: IUnitOfWork, logger: ILogger):
+        self._unit_of_work = unit_of_work
+        self._logger = logger
+
+
+    @transactional
+    async def __call__(self, *, payment_id: str, user_id: str) -> PaymentEntity:
+        payment = await self._unit_of_work.payment_repository.get_by_id_for_user(
+            payment_id=payment_id,
+            user_id=user_id,
+        )
+        if payment is None:
+            raise NotFoundException(message='Payment not found')
+        self._logger.info({'event':'payment_detail_requested','payment_id':payment_id,'user_id':user_id})
+        return payment
+
+
 class GetOrderCommand:
     def __init__(self, *, unit_of_work: IUnitOfWork, logger: ILogger):
         self._unit_of_work = unit_of_work