#include "SunClientPrecompiledHeader.h"
#include "Curlib.h"

CCurlib::CCurlib(void):
mLibraryModule(0),
mCurl(0),
mExit(false)
{

}

CCurlib::~CCurlib(void)
{
	Release();
}
bool CCurlib::Initialize()
{
	Release();

	mLibraryModule = LoadLibrary(_T("libcurl.dll"));

	if (!mLibraryModule)
	{
		return false;
	}

	{
		typedef void(__cdecl *Function)(long);
		Function curl_global_init = (Function)GetProcAddress(mLibraryModule, "curl_global_init");

		if (!curl_global_init)
		{
			return false;
		}

		curl_global_init(CURL_GLOBAL_ALL);
	}

	return true;
}

void CCurlib::Release()
{
	if (!mLibraryModule)
	{
		return;
	}

	{
		typedef void(__cdecl *Function)();
		Function function = (Function)GetProcAddress(mLibraryModule, "curl_global_cleanup");

		if (!function)
		{
			return;
		}

		function();
	}

	FreeLibrary(mLibraryModule);

	mLibraryModule = 0;
	mCurl = 0;
}
int CCurlib::WriteToMemory(void* ptr, size_t size, size_t nmemb, void* data)
{
	if (!data)
	{
		return 0;
	}
	size_t realsize = size * nmemb;
	struct DataStruct *RetData = (struct DataStruct *)data;

	RetData->Data = (char *)realloc(RetData->Data, RetData->size + realsize + 1);
	if (RetData->Data)
	{
		memcpy(&(RetData->Data[RetData->size]), ptr, realsize);
		RetData->size += realsize;
		RetData->Data[RetData->size] = 0;
	}
	return realsize;
}


string CCurlib::Download(const string& path)
{
	//CCurlib& instance = GetInstance();
	//CURL*&	 curl = instance.mCurl;
	//HMODULE  libraryModule = instance.mLibraryModule;
	DataStruct DownLoadData;
	
	//curl_easy_init
	{
		typedef CURL* (__cdecl *Function)();
		Function function = (Function)GetProcAddress(mLibraryModule, "curl_easy_init");

		if (!function)
		{
			return "";
		}

		mCurl = function();
	}
	//curl_easy_setopt
	{
		typedef void(__cdecl *Function)(CURL*, CURLoption, ...);
		Function function = (Function)GetProcAddress(mLibraryModule, "curl_easy_setopt");

		if (!function)
		{
			return "";
		}
		function(mCurl, CURLOPT_URL, const_cast<char*>(path.c_str()));

		function(mCurl, CURLOPT_WRITEDATA, (void*)&DownLoadData);

		function(mCurl, CURLOPT_WRITEFUNCTION, WriteToMemory);

		function(mCurl, CURLOPT_FOLLOWLOCATION, 1);

		//function(mCurl, CURLOPT_CONNECTTIMEOUT_MS, 20000L);

		//function(mCurl, CURLOPT_TIMEOUT_MS, 20000);

		//function(mCurl, CURLOPT_NOSIGNAL, 3);

		
	}
	//curl_easy_perform
	{
		typedef CURLcode(__cdecl *Function)(CURL*);
		Function fucntion = (Function)GetProcAddress(mLibraryModule, "curl_easy_perform");
		if (!fucntion)
		{
			return "";
		}

		const CURLcode result = fucntion(mCurl);
	}
	//curl_easy_getinfo
	long retCode = 0;
	{
		typedef CURLcode(__cdecl *Function)(CURL*,CURLINFO,...);
		Function fucntion = (Function)GetProcAddress(mLibraryModule, "curl_easy_getinfo");

		if (!fucntion)
		{
			return "";
		}
		fucntion(mCurl, CURLINFO_RESPONSE_CODE, &retCode);
	}
	//curl_easy_cleanup
	{
		typedef void(__cdecl *Function)(CURL *);
		Function fucntion = (Function)GetProcAddress(mLibraryModule, "curl_easy_cleanup");

		if (!fucntion)
		{
			return "";
		}
		fucntion(mCurl);
	}
	return string(DownLoadData.Data);
}

std::string CCurlib::GetIP()
{
	CURLcode res = curl_global_init(CURL_GLOBAL_ALL);
	if (CURLE_OK != res)
	{
		return "";
	}
	CURL *pCurl;
	pCurl = curl_easy_init();

	if (NULL == pCurl)
	{
		return "";
	}

	curl_slist *pList = NULL;
	pList = curl_slist_append(pList, "Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9");
	pList = curl_slist_append(pList, "Accept-Language:zh-CN,zh;q=0.9,en;q=0.8,en-GB;q=0.7,en-US;q=0.6");
	pList = curl_slist_append(pList, "Accept-Encoding: gzip, deflate, br");
	pList = curl_slist_append(pList, "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36 Edg/88.0.705.53");
	curl_easy_setopt(pCurl, CURLOPT_HTTPHEADER, pList);
	curl_easy_setopt(pCurl, CURLOPT_URL, "http://www.yuxigongzuoshi.com:5000/Game/GetUserIP");
	curl_easy_setopt(pCurl, CURLOPT_HEADER, 0L);
	curl_easy_setopt(pCurl, CURLOPT_FOLLOWLOCATION, 1L);
	curl_easy_setopt(pCurl, CURLOPT_NOSIGNAL, 1L);

	DataStruct DownLoadData;
	curl_easy_setopt(pCurl, CURLOPT_WRITEDATA, &DownLoadData);
	curl_easy_setopt(pCurl, CURLOPT_WRITEFUNCTION, WriteToMemory);
	curl_easy_setopt(pCurl, CURLOPT_VERBOSE, 1L);


	curl_easy_setopt(pCurl, CURLOPT_SSL_VERIFYPEER, 1L);
	curl_easy_setopt(pCurl, CURLOPT_SSL_VERIFYHOST, 2L);

	curl_easy_setopt(pCurl, CURLOPT_TIMEOUT, 60L);

	curl_easy_setopt(pCurl, CURLOPT_CONNECTTIMEOUT, 10L);

	res = curl_easy_perform(pCurl);
	long res_code = 0;
	res = curl_easy_getinfo(pCurl, CURLINFO_RESPONSE_CODE, &res_code);

	curl_slist_free_all(pList);
	curl_easy_cleanup(pCurl);
	curl_global_cleanup();


	return DownLoadData.Data;
}