#include <string>
#include <iostream>
#include <curl/curl.h>
#include "include/rapidjson/document.h"
#include "include/rapidjson/writer.h"
#include "include/rapidjson/stringbuffer.h"

using namespace rapidjson;

static std::string buffer;
static int writer(char* data, size_t size, size_t nmemb, std::string* buffer) {
  int result = 0;
  if (buffer != NULL)
  {
    buffer->append(data, size* nmemb);
    result = size* nmemb;
  }
  return result;
}

static std::string vk(std::string method, std::string data, std::string token = "e5eadb782bd8huivamanetokende3e33a31ee7e2fe6e93378a72124e7ec3690a81352f82233a81f0") {
	CURL* curl;
	CURLcode result;
	std::string url = "https://api.vk.com/method/"+method;
		
	curl = curl_easy_init();
	
	if(curl) {
		curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writer);
		curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
		
		curl_easy_setopt(curl, CURLOPT_POST, 1);
		curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data.c_str());
		
		result = curl_easy_perform(curl);
	}
	return buffer;
}

int main(int argc, char* argv[]) {
	std::string ss = vk("users.get", "user_ids=cubexx&fields=city");
	const char* json = ss.c_str();
	Document d;
    d.Parse(json);
    
    Value& s = d["response"];
    Value& sa = s["uid"];
    
    StringBuffer buffer;
    Writer<StringBuffer> writer(buffer);
    d.Accept(writer);
    
    std::cout << buffer.GetString();
	return 0;
}