#ifndef __HTTPCLIENT_H__

#define __HTTPCLIENT_H__

#include <iostream>

#include "include/curl/curl.h"

#define Z_DEBUG

using namespace std;

#define ZLOG(str) HttpClient::getInstance()->zlog(__DATE__, __TIME__, __FILE__, __LINE__, __FUNCTION__, str);

#ifdef _WIN32

typedef _off_t p_off_t;

#else

typedef off_t p_off_t;

#endif

typedef void(*progress_info_callback)(void *userdata, double downloadSpeed, double remainingTime, double progressPercentage);

typedef struct

{

void *sender;

CURL *handle;

progress_info_callback cb;

}Progress_User_Data;

typedef enum

{

HTTP_REQUEST_OK = CURLE_OK,

HTTP_REQUEST_ERROR = -999,

}Http_Client_Response;

class HttpClient

{

public:

~HttpClient();

static HttpClient *getInstance();

static void destroyInstance();

int HttpGet(const string requestURL, const string saveTo, void *sender, progress_info_callback cb);

void zlog(const char *date, const char *time, const char *file, const int line, const char *func, const char* str);

private:

HttpClient();

bool init();

static size_t write_callback(char *buffer, size_t size, size_t nmemb, void *userdata);

static int progress_callback(void *userdata, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow);

// Get the local file size

p_off_t getLocalFileLength(string path);

// Get the file size on the server

double getDownloadFileLength(string url);

private:

static HttpClient *instance;

static double downloadFileLength;

static curl_off_t resumeByte;

// Call frequency of the callback function

static time_t lastTime;

static bool stopCurl;

};

#endif // __HTTPCLIENT_H__