/*
    Privacy Plugin - Filter messages

    Copyright (c) 2006 by Andre Duffeck <duffeck@kde.org>
    Kopete    (c) 2002-2006 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 <kicon.h>
#include <kaction.h>
#include <knotification.h>
#include <kplugininfo.h>

#include "kopetecontact.h"
#include "kopetemetacontact.h"
#include "kopetemessage.h"
#include "kopetemessageevent.h"
#include "kopetechatsessionmanager.h"
#include "kopeteprotocol.h"
#include "kopetecontactlist.h"
#include "kopetepluginmanager.h"
#include "kopeteview.h"
#include "kopeteviewplugin.h"
#include "privacymessagehandler.h"
#include "privacyconfig.h"
#include "privacyguiclient.h"

#include "privacyplugin.h"
#include <kactioncollection.h>

K_PLUGIN_FACTORY( PrivacyPluginFactory, registerPlugin<PrivacyPlugin>(); )
K_EXPORT_PLUGIN( PrivacyPluginFactory( "kopete_privacy" ) )

PrivacyPlugin * PrivacyPlugin::pluginStatic_ = 0L;

PrivacyPlugin::PrivacyPlugin( QObject *parent, const QVariantList & )
: Kopete::Plugin( PrivacyPluginFactory::componentData(), parent )
{
	kDebug(14313) ;
	if( !pluginStatic_ )
		pluginStatic_ = this;

	KAction *addToWhiteList = new KAction( KIcon("privacy_whitelist"), i18n("Add to WhiteList" ), this );
        actionCollection()->addAction( "addToWhiteList", addToWhiteList );
	connect(addToWhiteList, SIGNAL(triggered(bool)), this, SLOT(slotAddToWhiteList()));
	KAction *addToBlackList = new KAction( KIcon("privacy_blacklist"), i18n("Add to BlackList" ), this );
        actionCollection()->addAction( "addToBlackList", addToBlackList );
	connect(addToBlackList, SIGNAL(triggered(bool)), this, SLOT(slotAddToBlackList()));

	setXMLFile("privacyui.rc");

	m_inboundHandler = new PrivacyMessageHandlerFactory( Kopete::Message::Inbound,
		Kopete::MessageHandlerFactory::InStageStart, this, SLOT( slotIncomingMessage( Kopete::MessageEvent * ) ) );

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

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


PrivacyPlugin::~PrivacyPlugin()
{
	kDebug(14313) ;
	pluginStatic_ = 0L;
	delete m_inboundHandler;
}

PrivacyPlugin *PrivacyPlugin::plugin()
{
	return pluginStatic_ ;
}

void PrivacyPlugin::slotSettingsChanged()
{
	PrivacyConfig::self()->readConfig();
}

void PrivacyPlugin::slotAddToWhiteList()
{
	QList<const Kopete::Contact *> list;
	foreach( const Kopete::MetaContact *metacontact, Kopete::ContactList::self()->selectedMetaContacts() )
	{
		foreach( const Kopete::Contact *contact, metacontact->contacts() )
		{
			list.append( contact );
		}
	}

	addContactsToWhiteList( list );
}

void PrivacyPlugin::slotAddToBlackList()
{
	QList<const Kopete::Contact *> list;
	foreach( const Kopete::MetaContact *metacontact, Kopete::ContactList::self()->selectedMetaContacts() )
	{
		foreach( const Kopete::Contact *contact, metacontact->contacts() )
		{
			list.append( contact );
		}
	}

	addContactsToBlackList( list );
}

void PrivacyPlugin::addContactsToWhiteList( QList<const Kopete::Contact *> list )
{
	QStringList whitelist = PrivacyConfig::whiteList();

	foreach( const Kopete::Contact *contact, list )
	{
		QString entry( contact->protocol()->pluginId() + ':' + contact->contactId() );
		if( !whitelist.contains( entry ) )
			whitelist.append( entry );
	}

	PrivacyConfig::setWhiteList( whitelist );
	PrivacyConfig::self()->writeConfig();
}

void PrivacyPlugin::addContactsToBlackList( QList<const Kopete::Contact *> list )
{
	QStringList blacklist = PrivacyConfig::blackList();

	foreach( const Kopete::Contact *contact, list )
	{
		QString entry( contact->protocol()->pluginId() + ':' + contact->contactId() );
		if( !blacklist.contains( entry ) )
			blacklist.append( entry );
	}

	PrivacyConfig::setBlackList( blacklist );
	PrivacyConfig::self()->writeConfig();
}

void PrivacyPlugin::slotIncomingMessage( Kopete::MessageEvent *event )
{
	Kopete::Message msg = event->message();

	if( msg.direction() == Kopete::Message::Outbound ||
		msg.direction() == Kopete::Message::Internal )
		return;

	// Verify sender
	if( PrivacyConfig::sender_AllowNoneButWhiteList() )
	{
		if( !PrivacyConfig::whiteList().contains( msg.from()->protocol()->pluginId() + ':' + msg.from()->contactId() ) )
		{
			kDebug(14313) << "Message from " << msg.from()->protocol()->pluginId() << ":" << msg.from()->contactId() << " dropped (not whitelisted)";
			KNotification::event( "message_dropped", i18n("A message from %1 was dropped, because this contact is not on your whitelist.", msg.from()->contactId()) );
			event->discard();
			return;
		}
	}
	else if( PrivacyConfig::sender_AllowAllButBlackList() )
	{
		if( PrivacyConfig::blackList().contains( msg.from()->protocol()->pluginId() + ':' + msg.from()->contactId() ) )
		{
			kDebug(14313) << "Message from " << msg.from()->protocol()->pluginId() << ":" << msg.from()->contactId() << " dropped (blacklisted)";
			KNotification::event( "message_dropped", i18n("A message from %1 was dropped, because this contact is on your blacklist.", msg.from()->contactId()) );
			event->discard();
			return;
		}
	}
	else if( PrivacyConfig::sender_AllowNoneButContactList() )
	{
		if( msg.from()->metaContact()->isTemporary() )
		{
			kDebug(14313) << "Message from " << msg.from()->contactId() << " dropped (not on the contact list)";
			KNotification::event( "message_dropped", i18n("A message from %1 was dropped, because this contact is not on your contact list.", msg.from()->contactId()) );
			event->discard();
			return;
		}
	}

	// Verify content
	if( PrivacyConfig::content_DropIfAny() )
	{
		foreach(const QString &word, PrivacyConfig::dropIfAny().split(',') )
		{
			if( word.isEmpty() )
				continue;

			if( msg.plainBody().contains( word ) )
			{
				kDebug(14313) << "Message dropped because it contained: " << word;
				KNotification::event( "message_dropped", i18n("A message from %1 was dropped, because it contained a blacklisted word.", msg.from()->contactId()) );
				event->discard();
				return;
			}
		}
	}

	if( PrivacyConfig::content_DropIfAll() )
	{
		bool drop = true;
		foreach(const QString &word, PrivacyConfig::dropIfAll().split(',') )
		{
			if( word.isEmpty() )
				continue;

			if( !msg.plainBody().contains( word ) )
			{
				drop = false;
				break;
			}
		}
		if( drop )
		{
			kDebug(14313) << "Message dropped because it contained blacklisted words.";
				KNotification::event( "message_dropped", i18n("A message from %1 was dropped, because it contained blacklisted words.", msg.from()->contactId()) );
			event->discard();
			return;
		}
	}
}

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

	Kopete::ChatSession *session = view->msgManager();

	if(!session)
		return;

	if(!m_guiClients.contains(session))
	{
		m_guiClients.insert(session , new PrivacyGUIClient( session ) );
		connect( session, SIGNAL(closing(Kopete::ChatSession*)),
			this , SLOT(slotChatSessionClosed(Kopete::ChatSession*)));
	}
}

void PrivacyPlugin::slotChatSessionClosed( Kopete::ChatSession *session )
{
	m_guiClients[session]->deleteLater();
	m_guiClients.remove( session );
}

#include "privacyplugin.moc"
