/*
 * This file is a part of Winix
 * and is not publicly distributed
 * 
 * Copyright (c) 2011, Tomasz Sowa
 * All rights reserved.
 * 
 */

#include <cstdio>
#include <cstdlib>
#include <unistd.h>
#include <curl/curl.h>
#include <string.h>
#include "exportthread.h"
#include "core/log.h"
#include "core/misc.h"
#include "utf8.h"



namespace Export
{
ExportThread * ExportThread::exp_thread;


ExportThread::ExportThread()
{
	exp_thread = 0;
	utf8 = false;
}



void ExportThread::SetUTF8(bool use_utf8)
{
	utf8 = use_utf8;
}


void ExportThread::AddMessage(const Message & message)
{
	message_tab.insert(message_tab.end(), message);
	WakeUpThread();

	log << log1 << "yes ser" << logend;
}


// first thread (objects locked)
void ExportThread::AddMessage(int type, const std::wstring & url, const std::wstring & path)
{
	message_add_temp.type = type;
	message_add_temp.url  = url;
	message_add_temp.path = path;

	AddMessage(message_add_temp);
	WakeUpThread();
}



// second thread
// objects are locked
bool ExportThread::SignalReceived()
{
	log << log1 << "------------- a ---------------" << logend;

	return !message_tab.empty();
}



// second thread
// objects are not locked
void ExportThread::Do()
{
MessageTab::iterator i;
bool end;

	Lock();
	log << log1 << "------------- swinka ---------------" << logend;
	i = message_tab.begin();
	Unlock();

	do
	{
		Lock();
		
		if( i != message_tab.end() )
		{
			message_work = *i;
			message_tab.erase(i++);
			end = false;
		}
		else
		{
			end = true;
		}

		Unlock();

		if( !end )
			DoMessage();

	}
	while( !end && !IsExitSignal() );
}


// second thread
// objects are not locked
// current message we have in 'message_work'
void ExportThread::DoMessage()
{
	Lock();

	if( utf8 )
		Ezc::WideToUTF8(message_work.url, url_a);
	else
		AssignString(message_work.url, url_a);

	Unlock();

	Fetch(url_a.c_str());

	Lock();
	log << log1 << "sciagnalem takie cos ---------------------------------------------------" << logend;

	log << "rozmiar: " << buffer.size() << logend;

	log << log1 << "koniec takiego cosia ---------------------------------------------------" << logend << logsave;
	Unlock();
}






// second thread
// objects are not locked
bool ExportThread::Fetch(const char * url)
{
CURL * curl;
CURLcode res;
long code;

	curl = curl_easy_init();

	if( !curl )
	{
		Lock();
		log << log1 << "Export: I can't use curl" << logend;
		Unlock();
		return false;
	}

	exp_thread = this;
	buffer.clear();

	/*
	curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1); // the http code will be from the last request
	*/
	//curl_easy_setopt(curl, CURLOPT_WRITEDATA, file);
	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, StaticSaveFunction);
	curl_easy_setopt(curl, CURLOPT_URL, url);
	curl_easy_setopt(curl, CURLOPT_USERAGENT, "Winix");

	res = curl_easy_perform(curl);	
	curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
	curl_easy_cleanup(curl);

	if( res!=0 || code!=200 )
	{
		Lock();
		log << log1 << "Ezport: error: operation result: " << (int)res << ", http code: " << code << logend;
		Unlock();
		return false;
	}
	
return true;
}



size_t ExportThread::StaticSaveFunction(char * ptr, size_t size, size_t nmemb, void *userdata)
{
	if( exp_thread )
		return exp_thread->SaveFunction(ptr, size, nmemb, userdata);

return 0;
}


size_t ExportThread::SaveFunction(char * ptr, size_t size, size_t nmemb, void *userdata)
{
	size_t len = size * nmemb;

	if( len > 0 )
		buffer.append(ptr, len);

	Lock();
	log << log1 << "odebralem cosik: size: " << size << ", nmemb: " << nmemb << logend;
	Unlock();

return len;
}




} // namespace