feat: implement endpoint for deleteTopic method (#2451)

Signed-off-by: MonaaEid <monaa_eid@hotmail.com>

Author: MonaaEid

tck/handlers/topic.py

@@ -2,6 +2,7 @@
 
 from hiero_sdk_python.account.account_id import AccountId
 from hiero_sdk_python.consensus.topic_create_transaction import TopicCreateTransaction
+from hiero_sdk_python.consensus.topic_delete_transaction import TopicDeleteTransaction
 from hiero_sdk_python.consensus.topic_id import TopicId
 from hiero_sdk_python.consensus.topic_info import TopicInfo
 from hiero_sdk_python.consensus.topic_message_submit_transaction import TopicMessageSubmitTransaction
@@ -14,10 +15,11 @@
 from hiero_sdk_python.transaction.transaction_receipt import TransactionReceipt
 from tck.handlers.registry import rpc_method
 from tck.param.custom_fee import CustomFeeLimitParams, CustomFeeParams
-from tck.param.topic import CreateTopicParams, TopicMessageInfoParams, TopicMessageSubmitParams
+from tck.param.topic import CreateTopicParams, DeleteTopicParams, TopicMessageInfoParams, TopicMessageSubmitParams
 from tck.response.topic import (
     CreateTopicResponse,
     CustomFeeResponse,
+    DeleteTopicResponse,
     FixedFeeResponse,
     TopicInfoResponse,
     TopicMessageSubmitResponse,
@@ -95,6 +97,25 @@ def create_topic(params: CreateTopicParams) -> CreateTopicResponse:
     return CreateTopicResponse(topic_id, ResponseCode(receipt.status).name)
 
 
+@rpc_method("deleteTopic")
+def delete_topic(params: DeleteTopicParams) -> DeleteTopicResponse:
+    """Delete topic."""
+    client = get_client(params.sessionId)
+
+    transaction = TopicDeleteTransaction().set_grpc_deadline(DEFAULT_GRPC_TIMEOUT)
+
+    if params.topicId is not None:
+        transaction.set_topic_id(TopicId.from_string(params.topicId))
+
+    if params.commonTransactionParams is not None:
+        params.commonTransactionParams.apply_common_params(transaction, client)
+
+    response = transaction.execute(client, wait_for_receipt=False)
+    receipt: TransactionReceipt = response.get_receipt(client, validate_status=True)
+
+    return DeleteTopicResponse(ResponseCode(receipt.status).name)
+
+
 def _build_custom_fee_limit(params: CustomFeeLimitParams) -> CustomFeeLimit:
     """Build custom fee limit from params."""
     custom_fee_limit = CustomFeeLimit()

tck/param/topic.py

@@ -56,6 +56,22 @@ def parse_json_params(cls, params: dict) -> CreateTopicParams:
         )
 
 
+@dataclass
+class DeleteTopicParams(BaseTransactionParams):
+    """Parameters for deleting a topic. Extends BaseTransactionParams to include common transaction parameters."""
+
+    topicId: str | None = None
+
+    @classmethod
+    def parse_json_params(cls, params: dict) -> DeleteTopicParams:
+        """Parse JSON-RPC params into a DeleteTopicParams instance."""
+        return cls(
+            topicId=params.get("topicId"),
+            sessionId=parse_session_id(params),
+            commonTransactionParams=parse_common_transaction_params(params),
+        )
+
+
 @dataclass
 class TopicMessageSubmitParams(BaseTransactionParams):
     """Request parameters for submitTopicMessage endpoint."""

tck/response/topic.py

@@ -2,6 +2,8 @@
 
 from dataclasses import dataclass
 
+from tck.response.base import StatusOnlyResponse
+
 
 @dataclass
 class CreateTopicResponse:
@@ -11,6 +13,11 @@ class CreateTopicResponse:
     status: str | None = None
 
 
+@dataclass
+class DeleteTopicResponse(StatusOnlyResponse):
+    """Response payload for deleteTopic."""
+
+
 @dataclass
 class TopicMessageSubmitResponse:
     """Response payload for submitTopicMessage."""