/*
    historyplugin.cpp

    Copyright (c) 2003-2004 by Olivier Goffart        <ogoffart@kde.org>
    Copyright (c) 2003 by Stefan Gehn                 <metz@gehn.net>

    Kopete    (c) 2003-2004 by the Kopete developers  <kopete-devel@kde.org>

    *************************************************************************
    *                                                                       *
    * This program 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 2 of the License, or     *
    * (at your option) any later version.                                   *
    *                                                                       *
    *************************************************************************
*/

#include <kgenericfactory.h>
#include <kaboutdata.h>
#include <kaction.h>
#include <kmessagebox.h>
//#include <kconfig.h>
#include <kplugininfo.h>
#include <kdeversion.h>
#include <kicon.h>

#include "kopetechatsessionmanager.h"
#include "kopetemetacontact.h"
#include "kopeteview.h"
#include "kopetecontactlist.h"
#include "kopeteuiglobal.h"
#include "kopetemessageevent.h"
#include "kopeteviewplugin.h"

#include "historydialog.h"
#include "historyplugin.h"
#include "historylogger.h"
#include "historyguiclient.h"
#include "historyconfig.h"

#include <QList>
#include <kactioncollection.h>

typedef KGenericFactory<HistoryPlugin> HistoryPluginFactory;
static const KAboutData aboutdata("kopete_history", 0, ki18n("History") , "1.0" );
K_EXPORT_COMPONENT_FACTORY( kopete_history, HistoryPluginFactory( &aboutdata )  )

HistoryPlugin::HistoryPlugin( QObject *parent, const QStringList & /* args */ )
: Kopete::Plugin( HistoryPluginFactory::componentData(), parent ), m_loggerFactory( this )
{
	KAction *viewMetaContactHistory = new KAction( KIcon("view-history"), i18n("View &History" ), this );
	actionCollection()->addAction( "viewMetaContactHistory", viewMetaContactHistory );
	connect(viewMetaContactHistory, SIGNAL(triggered(bool)), this, SLOT(slotViewHistory()));
	viewMetaContactHistory->setEnabled(
		Kopete::ContactList::self()->selectedMetaContacts().count() == 1 );

	connect(Kopete::ContactList::self(), SIGNAL(metaContactSelected(bool)),
		viewMetaContactHistory, SLOT(setEnabled(bool)));

	connect(Kopete::ChatSessionManager::self(), SIGNAL(viewCreated(KopeteView*)),
		this, SLOT(slotViewCreated(KopeteView*)));

	connect(this, SIGNAL(settingsChanged()), this, SLOT(slotSettingsChanged()));

	setXMLFile("historyui.rc");
	if(detectOldHistory())
	{
		if(
			KMessageBox::questionYesNo(Kopete::UI::Global::mainWidget(),
				i18n( "Old history files from Kopete 0.6.x or older has been detected.\n"
				"Do you want to import and convert them to the new history format?" ),
				i18n( "History Plugin" ), KGuiItem( i18n("Import && Convert") ), KGuiItem( i18n("Do Not Import") ) ) == KMessageBox::Yes )
		{
			convertOldHistory();
		}
	}

	// Add GUI action to all existing kmm objects
	// (Needed if the plugin is enabled while kopete is already running)
	QList<Kopete::ChatSession*> sessions = Kopete::ChatSessionManager::self()->sessions();
	for (QList<Kopete::ChatSession*>::Iterator it= sessions.begin(); it!=sessions.end() ; ++it)
	{
	  if(!m_loggers.contains(*it))
		{
			m_loggers.insert(*it, new HistoryGUIClient( *it ) );
			connect( *it, SIGNAL(closing(Kopete::ChatSession*)),
				this, SLOT(slotKMMClosed(Kopete::ChatSession*)));
		}
	}
}


HistoryPlugin::~HistoryPlugin()
{
}


void HistoryMessageLogger::handleMessage( Kopete::MessageEvent *event )
{
	if (history)
		history->messageDisplayed( event->message() );

	MessageHandler::handleMessage( event );
}

void HistoryPlugin::messageDisplayed(const Kopete::Message &m)
{
	if(m.direction()==Kopete::Message::Internal || !m.manager() ||
	   (m.type() == Kopete::Message::TypeFileTransferRequest && m.plainBody().isEmpty()) )
		return;

	if(!m_loggers.contains(m.manager()))
	{
		m_loggers.insert(m.manager() , new HistoryGUIClient( m.manager() ) );
		connect(m.manager(), SIGNAL(closing(Kopete::ChatSession*)),
			this, SLOT(slotKMMClosed(Kopete::ChatSession*)));
	}

	HistoryLogger *l=m_loggers[m.manager()]->logger();
	if(l)
	{

		QList<Kopete::Contact*> mb=m.manager()->members();
		l->appendMessage(m,mb.first());
	}

	m_lastmessage=m;
}


void HistoryPlugin::slotViewHistory()
{
	Kopete::MetaContact *m=Kopete::ContactList::self()->selectedMetaContacts().first();
	if(m)
	{
		//int lines = HistoryConfig::number_ChatWindow();

		// TODO: Keep track of open dialogs and raise instead of
		// opening a new (duplicated) one
		HistoryDialog* dialog = new HistoryDialog(m);
		dialog->setObjectName( QLatin1String("HistoryDialog") );
	}
}


void HistoryPlugin::slotViewCreated( KopeteView* v )
{
	if(v->plugin()->pluginInfo().pluginName() != QString::fromLatin1("kopete_chatwindow") )
		return;  //Email chat windows are not supported.

	bool autoChatWindow = HistoryConfig::auto_chatwindow();
	int nbAutoChatWindow = HistoryConfig::number_Auto_chatwindow();

	KopeteView *m_currentView = v;
	Kopete::ChatSession *m_currentChatSession = v->msgManager();

	if(!m_currentChatSession)
		return; //i am sorry

	const Kopete::ContactPtrList& mb = m_currentChatSession->members();

	if(!m_loggers.contains(m_currentChatSession))
	{
		m_loggers.insert(m_currentChatSession , new HistoryGUIClient( m_currentChatSession ) );
		connect( m_currentChatSession, SIGNAL(closing(Kopete::ChatSession*)),
			this , SLOT(slotKMMClosed(Kopete::ChatSession*)));
	}

	if(!autoChatWindow || nbAutoChatWindow == 0)
		return;

	HistoryLogger *logger = m_loggers[m_currentChatSession]->logger();

	logger->setPositionToLast();

	QList<Kopete::Message> msgs = logger->readMessages(nbAutoChatWindow,
			mb.first(), HistoryLogger::AntiChronological, true, true);

	// make sure the last message is not the one which will be appened right
	// after the view is created (and which has just been logged in)
	if(!msgs.isEmpty() && (msgs.last().plainBody() == m_lastmessage.plainBody()) &&
		(m_lastmessage.manager() == m_currentChatSession))
	{
		msgs.takeLast();
	}

	m_currentView->appendMessages( msgs );
}


void HistoryPlugin::slotKMMClosed( Kopete::ChatSession* kmm)
{
	m_loggers[kmm]->deleteLater();
	m_loggers.remove(kmm);
}

void HistoryPlugin::slotSettingsChanged()
{
	kDebug(14310) << "RELOADING CONFIG";
	HistoryConfig::self()->readConfig();
}

#include "historyplugin.moc"
