#include <string>

#include <grpcpp/grpcpp.h>
#include "habr.grpc.pb.h"

using grpc::Server;
using grpc::ServerBuilder;
using grpc::ServerContext;
using grpc::Status;

using mathtest::MathTest;
using mathtest::MathRequest;
using mathtest::MathReply;

class MathServiceImplementation : public MathTest::Service {
	Status sendRequest(
		ServerContext* context,
		const MathRequest* request,
		MathReply* reply
	) override {
		int a = request->a();
		int b = request->b();

		reply->set_result(a * b);

		return Status::OK;
	}
	//~MathServiceImplementation() { // проба исправить ошибку
	//}
};

void Run() {
	std::string address("0.0.0.0:5000");
	MathServiceImplementation *service = new MathServiceImplementation();
	

	ServerBuilder builder;

	builder.AddListeningPort(address, grpc::InsecureServerCredentials());
	builder.RegisterService(service);

	std::unique_ptr<Server> server(builder.BuildAndStart());
	std::cout << "Server listening on port: " << address << std::endl;

	server->Wait();
}

int main(int argc, char** argv) {
	Run();

	return 0;

class Service : public ::grpc::Service {
 public:
	Service();
//	virtual ~Service(); // проба исправить ошибку <==
	// Function invoked to send the request
	virtual ::grpc::Status sendRequest(::grpc::ServerContext* context, const ::mathtest::MathRequest* request, ::mathtest::MathReply* response);
};

class Service : public ::grpc::Service {
public:
	Service(); <==
//	virtual ~Service(); // исправили первую ошибку
       // Function invoked to send the request
	virtual ::grpc::Status sendRequest(::grpc::ServerContext* context, const ::mathtest::MathRequest* request, ::mathtest::MathReply* response);
};

void Run(const std::string& db_path) {
	std::string address("0.0.0.0:5000");

	MathServiceImplementation service;

// Generated by the gRPC C++ plugin.
// If you make any local change, they will be lost.
// source: habr.proto

MathTest::Service::Service() {
  AddMethod(new ::grpc::internal::RpcServiceMethod(
      MathTest_method_names[0],
      ::grpc::internal::RpcMethod::NORMAL_RPC,
      new ::grpc::internal::RpcMethodHandler< MathTest::Service, ::mathtest::MathRequest, ::mathtest::MathReply>(
          std::mem_fn(&MathTest::Service::sendRequest), this)));
}

MathTest::Service::~Service() {
}

::grpc::Status MathTest::Service::sendRequest(::grpc::ServerContext* context, const ::mathtest::MathRequest* request, ::mathtest::MathReply* response) {
  (void) context;
  (void) request;
  (void) response;
  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
}

class Service : public ::grpc::Service {
  public:
	Service();