/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include "RpcClientMock.h"

#include "google/rpc/code.pb.h"
#include "grpcpp/impl/grpc_library.h"
#include "gtest/gtest.h"

ROCKETMQ_NAMESPACE_BEGIN

namespace ut {

class RpcClientTest : public testing::Test {

public:
  void SetUp() override {
    grpc::internal::GrpcLibraryInitializer initializer;
  }

  static void mockQueryRouteInfo(const QueryRouteRequest& request,
                                 InvocationContext<QueryRouteResponse>* invocation_context) {
    invocation_context->response.mutable_common()->mutable_status()->set_code(google::rpc::Code::OK);
    for (int i = 0; i < 3; ++i) {
      auto partition = new rmq::Partition;
      partition->mutable_topic()->set_name(request.topic().name());
      partition->mutable_broker()->set_name(fmt::format("broker-{}", i));
      partition->mutable_broker()->set_id(0);
      auto endpoint = partition->mutable_broker()->mutable_endpoints();
      auto address = new rmq::Address;
      address->set_host(fmt::format("10.0.0.{}", i));
      address->set_port(10911);
      endpoint->mutable_addresses()->AddAllocated(address);
      invocation_context->response.mutable_partitions()->AddAllocated(partition);
    }

    invocation_context->onCompletion(true);
  }
};

TEST_F(RpcClientTest, testMockedGetRouteInfo) {
  RpcClientMock rpc_client_mock;
  ON_CALL(rpc_client_mock, asyncQueryRoute(testing::_, testing::_)).WillByDefault(testing::Invoke(mockQueryRouteInfo));
  std::string topic = "sample_topic";
  QueryRouteRequest request;
  request.mutable_topic()->set_name(topic);
  absl::flat_hash_map<std::string, std::string> metadata;
  auto invocation_context = new InvocationContext<QueryRouteResponse>();
  absl::Mutex mtx;
  absl::CondVar cv;
  bool completed = false;
  auto callback = [&](const InvocationContext<QueryRouteResponse>* invocation_context) {
    EXPECT_TRUE(invocation_context->status.ok());
    EXPECT_EQ(google::rpc::Code::OK, invocation_context->response.common().status().code());
    EXPECT_EQ(3, invocation_context->response.partitions().size());
    absl::MutexLock lk(&mtx);
    completed = true;
    cv.SignalAll();
  };
  invocation_context->callback = callback;
  rpc_client_mock.asyncQueryRoute(request, invocation_context);
  while (!completed) {
    absl::MutexLock lk(&mtx);
    cv.Wait(&mtx);
  }
}

} // namespace ut
ROCKETMQ_NAMESPACE_END