#include <iostream>
#include <memory>
#include <string>
#include <fstream>
#include <sstream>


std::string LoadStringFromFile(std::string path) {
  std::ifstream file(path);
  if (!file.is_open()) {
    std::cout << "Failed to open " << path << std::endl;
    abort();
  }
  std::stringstream sstr;
  sstr << file.rdbuf();
  return sstr.str();
}

#define GRPC_DEVICE_EXPORTS
#define GRPC_DEVICE_API 

class GrpcDeviceClient {

  
  public:
    GrpcDeviceClient() {}
   virtual ~GrpcDeviceClient() {}
    
    virtual int OpenDevice(string devUri, string group) = 0;
    virtual int CloseDevice() = 0;
  
    virtual string GetDeviceTarget() = 0;
    virtual int GetClientStatus() = 0;
    virtual string GetOpendDeviceResource() = 0;

    //同步接口
    virtual int Get(string devResource, string& devRes, string &calResMsg, string devUri = "",
                    string calSection = "", string calClientID = "") = 0;
    virtual int Set(string devResource, string reqParams, string& devRes, string& calResMsg,
                    string devUri = "", string calSection = "",
                    string calClientID = "") = 0;
    virtual int Update(string devResource, string reqParams, string& devRes, string& calResMsg,
                    string devUri = "", string calSection = "",
                    string calClientID = "") = 0;
    virtual int Add(string devResource, string reqParams, string& devRes, string& calResMsg,
                    string devUri = "", string calSection = "",
                    string calClientID = "") = 0;
    virtual int Del(string devResource, string reqParams, string& devRes, string& calResMsg,
                    string devUri = "", string calSection = "",
                    string calClientID = "") = 0;
    virtual int Action(string devResource, string reqParams, string& devRes, string& calResMsg,
                    string devUri = "", string calSection = "",
                    string calClientID = "") = 0;
    virtual int Message(string devResource, string reqParams, string& devRes, string& calResMsg,
                    string devUri = "", string calSection = "",
                    string calClientID = "") = 0;

    virtual int BeginAyncWait() = 0;
    virtual void WaitAllComplete() = 0;
    virtual int GetAsyncResult(int idx, string& devResource, string& devRes, string& calResMsg) = 0;
    virtual void EndAync() = 0;
    virtual int AsyncAction(string devResource, string reqParams,
                            string devUri = "", string calSection = "",
                            string calClientID = "") = 0;
    virtual int AsyncMessage(string devResource, string reqParams,
                            string devUri = "",  string calSection = "", 
                            string calClientID = "") = 0;

};

GRPC_DEVICE_API GrpcDeviceClient* CreateClient(const char* pszDeviceServerTarget);


GRPC_DEVICE_API void FreeClient(GrpcDeviceClient* pClient);