feat: Add new command

src/application/commands/purchase_request_commands.py

@@ -81,10 +81,46 @@ class UpdatePurchaseRequestStatusCommand:
             values['tx_hash'] = tx_hash
         if status == 'completed':
             values['completed_at'] = datetime.now(timezone.utc)
+        else:
+            values['completed_at'] = None
 
         return await self._unit_of_work.purchase_request_repository.update(request_id, values=values)
 
 
+class UpdatePurchaseRequestCommand:
+    ALLOWED_FIELDS = frozenset({
+        'status',
+        'usdt_amount',
+        'rub_amount',
+        'exchange_rate',
+        'service_fee_percent',
+        'comment',
+        'admin_comment',
+        'target_wallet_chain',
+        'target_wallet_address',
+        'tx_hash',
+        'assigned_to',
+    })
+
+    def __init__(self, unit_of_work: IUnitOfWork, logger: ILogger):
+        self._unit_of_work = unit_of_work
+        self._logger = logger
+
+    @transactional
+    async def __call__(self, request_id: str, *, values: dict[str, Any]) -> PurchaseRequestEntity:
+        filtered = {k: v for k, v in values.items() if k in self.ALLOWED_FIELDS}
+        status = filtered.get('status')
+        if status is not None:
+            if status not in VALID_STATUSES:
+                raise ApplicationException(status_code=400, message='Invalid status')
+            if status == 'completed':
+                filtered['completed_at'] = datetime.now(timezone.utc)
+            else:
+                filtered['completed_at'] = None
+
+        return await self._unit_of_work.purchase_request_repository.update(request_id, values=filtered)
+
+
 class SetPurchaseRequestQuoteCommand:
     def __init__(self, unit_of_work: IUnitOfWork, logger: ILogger):
         self._unit_of_work = unit_of_work