/*
 *  
 *  $Id: thumbnailcontroller.cpp $
 *  Ginkgo CADx Project
 *
 *  Copyright 2008-12 MetaEmotion S.L. All rights reserved.
 *  http://ginkgo-cadx.com
 *
 *  This file is licensed under LGPL v3 license.
 *  See License.txt for details
 *
 *
 */
#include "thumbnailcontroller.h"
#include <main/entorno.h>
#include <wx/thread.h>
#include <eventos/progresocomando.h>
#include <main/controllers/controladorcomandos.h>
#include <main/controllers/controladoreventos.h>

#define TAMANIO_MAX_PILA 10
namespace GNC {
	namespace GCS {

		ThumbnailController* ThumbnailController::Instance()
		{
			if (m_pInstance == NULL) {
				m_pInstance = new ThumbnailController();
			}
			return m_pInstance;
		}

		void ThumbnailController::FreeInstance()
		{
			if(m_pInstance!=NULL){
				delete m_pInstance;
				m_pInstance = NULL;
			}
		}

		ThumbnailController* ThumbnailController::m_pInstance = NULL;

		ThumbnailController::ThumbnailController()
		{
			GNC::GCS::ControladorEventos::Instance()->Registrar(this, GNC::GCS::Events::EventoProgresoComando());
			m_pCriticalSection = new wxCriticalSection();
			//m_pContinueTimer = 
			m_pCmd = NULL;			
		}
		ThumbnailController::~ThumbnailController()
		{
			if(m_pCriticalSection != NULL)
			{
				delete m_pCriticalSection;
				m_pCriticalSection = NULL;
			}
			if (m_pCmd != NULL) {
				GNC::GCS::IControladorComandos::Instance()->AbortarComando(m_pCmd);
			}
		}

		void ThumbnailController::requestThumbnail(long file_pk, GADAPI::ThumbnailsNotifier* pNotifier)
		{
			m_pCriticalSection->Enter();
			m_petitions.push_back(TPetition(pNotifier, file_pk));
			if (m_pCmd == NULL) {
				m_pCmd = new GADAPI::ThumbnailsCommand(file_pk, pNotifier);
				GNC::GCS::IControladorComandos::Instance()->ProcessAsync("Generating thumbnails...", m_pCmd, this);
			}
			m_pCriticalSection->Leave();
		}

		void ThumbnailController::removeRequest(GADAPI::ThumbnailsNotifier* pNotifier)
		{
			m_pCriticalSection->Enter();
			if (!m_petitions.empty()) {
				if (m_petitions.front().m_pNotifier == pNotifier && m_pCmd != NULL) {
					GNC::GCS::IControladorComandos::Instance()->AbortarComandosDeOwner(this);
					m_pCmd = NULL;
					//to start with next...
					if(IsRunning()) {
						Stop();
						Start(300, true);
					}
				}
			}
			for (TListPetitions::iterator it = m_petitions.begin(); it != m_petitions.end(); ++it) {
				if ((*it).m_pNotifier == pNotifier) {
					m_petitions.erase(it);
					break;
				}
			}
			m_pCriticalSection->Leave();
		}

		void ThumbnailController::Notify()
		{
			m_pCriticalSection->Enter();
			if (m_pCmd == NULL) {
				//run front if exists...
				TListPetitions::iterator it = m_petitions.begin();
				if (it != m_petitions.end()) {
					m_pCmd = new GADAPI::ThumbnailsCommand((*it).m_file_pk, (*it).m_pNotifier);
					GNC::GCS::IControladorComandos::Instance()->ProcessAsync("Generating thumbnails...", m_pCmd, this);
				} 
			}
			m_pCriticalSection->Leave();
		}

		void ThumbnailController::ProcesarEvento(GNC::GCS::Events::IEvent *evt)
		{
			GNC::GCS::Events::EventoProgresoComando* pEvt = dynamic_cast<GNC::GCS::Events::EventoProgresoComando*> (evt);
			if (pEvt == NULL  || pEvt->GetComando() == NULL || pEvt->GetComando() != m_pCmd) {
				return;
			}
			switch (pEvt->GetTipo()) {
		case GNC::GCS::Events::EventoProgresoComando::TEP_Iniciado:
			break;
		case GNC::GCS::Events::EventoProgresoComando::TEP_Progreso:
			break;
		case GNC::GCS::Events::EventoProgresoComando::TEP_Finalizado:
			{
				m_pCriticalSection->Enter();
				m_petitions.pop_front();
				TListPetitions::iterator it = m_petitions.begin();
				if (it != m_petitions.end()) {
					m_pCmd = new GADAPI::ThumbnailsCommand((*it).m_file_pk, (*it).m_pNotifier);
					GNC::GCS::IControladorComandos::Instance()->ProcessAsync("Generating thumbnails...", m_pCmd, this);
				} else {
					m_pCmd = NULL;
				}
				m_pCriticalSection->Leave();
			}
			break;
		case GNC::GCS::Events::EventoProgresoComando::TEP_Unknown:
			break;
			}	
		}
	}
}
