/* 
*
*  ProLinga-Run
*
*  Copyright (C) 2002-2009 Xobas Software.
*  All rights reserved.
*  
*  This file is part of ProLinga-Run.
*
*  ProLinga-Run is free software: you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation, either version 3 of the License, or
*  (at your option) any later version.
*
*  ProLinga-Run is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with ProLinga-Run.  If not, see <http://www.gnu.org/licenses/>.
*
*  More information is available at the following addresses:
*
*  Website     : http://www.prolinga.org
*
*  Email       : prolinga-list@prolinga.org
*
*
*/

#include "RunCommon.h"
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/xpath.h>
#include <pthread.h>
#include <gtk/gtk.h>
#include "BuiltIn.hpp"
#include "DataRef.hpp"
#include "Thread.hpp"
#include "RepositoryCommand.hpp"
#include "LogicCommands.hpp"

#include <gtk/gtk.h>
extern GtkWidget *activeScreen;

extern pthread_t mainThreadId;
extern ThreadPtr threadPtr;
extern BiAppnPtr biAppnPtr;
extern BiThreadStatusPtr biThreadStatusPtr;

GtkWidget *curScreen;
//GtkWidget *curScreen = activeScreen;

//void PBWidget2(GtkWidget *wdg, const char *wdgName)
//{
//        GtkWidget *curWdg;
//        GList *wdgList;
//        int i, lengthWdgList;
                                                                                                                                             
//        wdgList = gtk_container_get_children(GTK_CONTAINER(wdg));
//        lengthWdgList = g_list_length(wdgList);
                                                                                                                                             
//        for (i = 0; i < lengthWdgList; i++)
//        {
//                curWdg = GTK_WIDGET(g_list_nth_data(wdgList, i));
                //printf("WIDGET : %s   NAME : %s\n", G_OBJECT_TYPE_NAME(G_OBJECT(curWdg)), gtk_widget_get_name(curWdg));
//                if (wdgName != NULL)
//                {
//                        if (strcmp(wdgName, (char *)gtk_widget_get_name(curWdg)) == 0)
//                        {
//                                //printf("OK, found 1\n");
//                                gtk_progress_bar_pulse(GTK_PROGRESS_BAR(curWdg));
//                                gtk_progress_bar_set_text(GTK_PROGRESS_BAR(curWdg), "update1");
//                        }
//                }
//                else
//                {
//                     //printf("OK, found 2\n");
//                                gtk_progress_bar_pulse(GTK_PROGRESS_BAR(curWdg));
//                                gtk_progress_bar_set_text(GTK_PROGRESS_BAR(curWdg), "update2");
//                }
//                                                                                                                                             
//                if (GTK_IS_CONTAINER(curWdg))
//                        PBWidget2(curWdg, wdgName);
//        }
//}


//void *xRunThread(void *args)
//{
//	char *tname = (char *)args;
//	int count = 0;
//
//printf("begin\n");
//		printf("Child thread  %ld\n", pthread_self());
//	curScreen = activeScreen;
//printf("active screen in thread %ld\n", activeScreen);
//
////	for (count=0; count<100;count++)
//	for (;;)
//	{
//		//if (threadPtr->getExitFlag(threadPtr, tname) == true)
//		if (threadPtr->getExitFlagByTid(threadPtr, pthread_self()) == true)
//			break;
//
//		//	printf("hello from the thread\n");
//		//	threadPtr->printList(threadPtr);

//		/* get GTK thread lock */
//		gdk_threads_enter();
//
////printf("cur screen in thread %ld\n", curScreen);
//		PBWidget2(curScreen, "pb");
//
//		/* Sync with X server */
//		gdk_flush();
//
//		/* release GTK thread lock */
//		gdk_threads_leave();
//	}
//
//	/* Clean up */
//	threadPtr->deleteOne(&threadPtr, tname);
//	
//	//pthread_exit(0);
//
//printf("do I get here?\n");
//
//	/* Return */
//	return NULL;
//}

void *RunThread(void *args)
{
	char *tname = (char *)args;
	const char *argList[255];
	char runThreadName[32];
	char runLogicName[32];
	bool isMainThread = false;

	/* Get Thread Name */
	strcpy(runThreadName, tname);

	/* Kill Messenger */
	delete tname;
	
	/* Run Logic */
	strcpy(runLogicName, threadPtr->getLogicName(threadPtr, runThreadName));
	argList[1] = runLogicName;
	CmdCall(argList, 1, isMainThread, false);

	/* Return */
	return NULL;
}

/* Command : THREAD */
/* Syntax  : THREAD START "thread_name" */
/* Syntax  : THREAD STOP "thread_name" */
void CmdThread(const char **argList, int argHits, bool isMainThread)
{
	int retStatus = 0;
	char logicName[32], threadNameLocal[32];
	char *threadName;
	xmlDocPtr docRes = NULL;
	xmlXPathContextPtr ctxRes;
	xmlXPathObjectPtr resRes;
	pthread_t tid;

	/* Init */
	biThreadStatusPtr->setThreadStatus(0);

	/* Get thread name (gets deleted in thread */
	threadName = new char[32];
	getDataRef(argList[2], isMainThread, threadName, false);
	strcpy(threadNameLocal, threadName);

	/* Get option */
	if (strcmp(argList[1], "START") == 0)
	{

		/* Not allowed to access from thread other than main */
		if (pthread_equal(mainThreadId, pthread_self()) == 0)
		{
			biThreadStatusPtr->setThreadStatus(10301);
			return;
		}

		/* Get logic name */
		retStatus = repGet(&docRes, biAppnPtr->getAppn(), "Thread", threadNameLocal);
		if (retStatus != 0)
		{
			biThreadStatusPtr->setThreadStatus(10302);
			return;
		}

		/* Create XPath environment */
		ctxRes = xmlXPathNewContext(docRes);

		/* Get value and store */
		resRes = xmlXPathEval((const xmlChar *)"/ProLinga/Repository/Command/Object/Thread/LogicName", ctxRes);
		strcpy(logicName, (char *)xmlXPathCastToString(resRes));
		threadPtr->putLogicName(&threadPtr, threadNameLocal, logicName);

		/* Store output screen */
		threadPtr->putOutputScreen(&threadPtr, threadNameLocal, activeScreen);

		/* Activate thread */
		//pthread_create(&tid, NULL, RunThread, threadName);
		pthread_create(&tid, NULL, RunThread, (void *)threadName);

		/* Store tid */
		threadPtr->putThreadId(&threadPtr, threadNameLocal, tid);

// DEBUG
//		printf("Thread id %ld\n", tid);
//		threadPtr->printList(threadPtr);
//		tid = pthread_self();
//		printf("Main thread via np %ld\n", tid);
		
		xmlXPathFreeObject(resRes);
		xmlXPathFreeContext(ctxRes);
		xmlFreeDoc(docRes);
	}
	else if (strcmp(argList[1], "STOP") == 0)
	{
		/* Get Thread Id */
		tid = threadPtr->getThreadId(threadPtr, threadNameLocal);
		if (tid == 0)
		{
			biThreadStatusPtr->setThreadStatus(10303);
			return;
		}

		/* Set stop flag */
		threadPtr->putExitFlag(&threadPtr, threadNameLocal, true);

		/* Extra leave and enter to work around possible deadlocks */
		gdk_threads_leave();
		pthread_join(tid, NULL);
		gdk_threads_enter();

		/* Clean up */
		threadPtr->deleteOne(&threadPtr, threadNameLocal);
		//threadPtr->printList(threadPtr);
	}

	/* Return */
	return;
}