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/*
 * install.cpp
 *
 * Copyright (c) 2007 Fabian Wuertz
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */



#include <kgenericfactory.h>
#include <klocale.h>
#include <kurlrequester.h>
#include <kaboutapplication.h>

#include <qlistbox.h>
#include <qfile.h>
#include <qpushbutton.h>
#include <qwidgetstack.h>
#include <qlabel.h>
#include <qlistview.h>
#include <qregexp.h>
#include <qradiobutton.h>
#include <qfiledialog.h>

#include <console.h>
#include <install.h>

install::install( const QString &url, QWidget *parent, const char *name, const QStringList &)
:InstallDialog(parent, name)
{


	if( !url )
		 path = QFileDialog::getOpenFileName( "", i18n("Debian Package (*.deb)"), this, i18n("open file dialog"), i18n("Choose a file to open") );
	else
		path = url;

	this->shell = new Process();

	this->shell->setCommand("dpkg -f "+path);
	this->shell->start(true);
	fields = QStringList::split( "\n", this->shell->getBuffer().stripWhiteSpace() );

	installPushButton->hide();
	nextPushButton1->hide();



	if( !checkArchitecture() )
		page2x1();
	else if( isLocked() )
		page2x2();


}

//----------------------------------------------------------------------------//
//--- next -------------------------------------------------------------------//
//----------------------------------------------------------------------------//

void install::next1()
{
	if( !isLocked() )
	{
		nextPushButton1->hide();
		nextPushButton2->show();
		widgetStack->raiseWidget(0);
	}
}


void install::next2()
{
	nextPushButton2->hide();
	if( syncRadioButton->isChecked() )
		page3();
	else
		page1();
}



//----------------------------------------------------------------------------//
//--- pages ------------------------------------------------------------------//
//----------------------------------------------------------------------------//


// page 0: skip apt-get update?
// page 1: dependencies
// page 2: warnings
// page 3: apt-get update
// page 4: install package


void install::page1()
{
	showDependencies();

	widgetStack->raiseWidget(1);
	installPushButton->show();
	closePushButton->show();
	titleTextLabel->setText( "<b>"+i18n( "The following packages will be installed, updated or removed:" )+"</b>" );
}

void install::page2x1()
{
	errorTextLabel->setText("<b>"+i18n("The architecture of the package and the system doesn't match! You will not be able to install this package!")+"</b>");
	nextPushButton2->hide();
	widgetStack->raiseWidget(2);

}

void install::page2x2()
{
	errorTextLabel->setText("<b>"+i18n("The package database is used by another process (E.g Synaptic)! Please terminate this process and press next.")+"</b>");
	nextPushButton1->show();
	nextPushButton2->hide();
	widgetStack->raiseWidget(2);
}


void install::page3()
{
	titleTextLabel->setText( "<b>"+i18n( "Resynchronization of the package index files.")+"</b>" );
	closePushButton->hide();

	QStrList run; run.append( "/usr/share/kdpkg/sh/kdpkg-sh" );
		run.append( "update" );

	QWidget *consoleWidget = new console(this, run );
 	widgetStack->addWidget(consoleWidget, 3);
	widgetStack->raiseWidget(3);

	connect( consoleWidget, SIGNAL( finished(bool) ), this, SLOT( page1() ));
}


void install::page4()
{
	installPushButton->hide();
	closePushButton->hide();
	titleTextLabel->setText( "<b>"+i18n( "Installation of the new package." )+"</b>" );


	if( !installPkg )
		installPkg = "none";
	if( !removePkg )
		removePkg = "none";

	QStrList run; run.append( "/usr/share/kdpkg/sh/kdpkg-sh" );
		run.append( "install" );
		run.append( path );
		run.append( installPkg );
		run.append( removePkg );

	QWidget *consoleWidget = new console(this, run );
	widgetStack->addWidget(consoleWidget, 4);
	widgetStack->raiseWidget(4);

	connect( consoleWidget, SIGNAL( finished(bool) ), this, SLOT( close() ));


}


//----------------------------------------------------------------------------//
//--- showDependencies -------------------------------------------------------//
//----------------------------------------------------------------------------//

void install::showDependencies()
{

	// show packages which will be installed

	QString tmpString = fields.grep( QRegExp("^Depends:") )[0].mid(9);
	tmpString += ", "+fields.grep( "Pre-Depends:" )[0].mid(13);


	QStringList allDepends = QStringList::split( ", ", tmpString );

	QString missingDepends;
	QStringList tmp;

	for(uint i = 0; i < allDepends.count(); i++)
	{
		if( allDepends[i].contains("|") ) {
			tmp = QStringList::split( " | ", allDepends[i] );
			uint j = 0;
			bool exit = FALSE;
			while ( !exit && j < tmp.count() ) {
				if( isInstalled(tmp[j]) )
					exit = TRUE;
				j++;
			}
			if( !exit )
				missingDepends += tmp[0]+" ";
		}
		else
		{
			if( !isInstalled( allDepends[i] ) )
				missingDepends += QStringList::split( " ", allDepends[i] )[0]+" ";
		}
	}


	this->shell->setCommand("apt-get -s install "+missingDepends);
	this->shell->start(true);
	QStringList installList = QStringList::split( "\n", this->shell->getBuffer().stripWhiteSpace() ).grep("Inst");


	for(uint i = 0; i < installList.count(); i++)
	{
		QString name = QStringList::split( " ", installList[i] )[1];
		QString pkgVersion;
		QString sysVersion;
		if( installList[i].contains("[") )
		{
			pkgVersion = QStringList::split( " ", installList[i] )[3].mid(1);
			sysVersion = QStringList::split( " ", installList[i] )[2].mid(1).replace("]", "");
		}
		else
			pkgVersion = QStringList::split( " ", installList[i] )[2].mid(1);

		QListViewItem * item = new QListViewItem( dependenciesListView, 0 );	
		item->setPixmap( 0, QPixmap( "/usr/share/kdpkg/icons/install.png") );
		item->setText( 1, name  );
		item->setText( 2, pkgVersion );
		item->setText( 3, sysVersion );

		installPkg += name+",";
	}

	// find rconflicts

	QString pkgName = fields.grep("Package:")[0].mid(9);
	QString pkgVersion = fields.grep("Version:")[0].mid(9);

	QString rconflicts;

	this->shell->setCommand("cat /var/lib/dpkg/status | grep "+pkgName+" -B 16| grep Conflicts -B 16");
	this->shell->start(true);
	QStringList input1 = QStringList::split( "\n\n", this->shell->getBuffer().stripWhiteSpace() );

	for(uint i = 0; i < input1.count(); i++)
	{
		if( input1[i].contains(pkgName) )
		{
			QStringList input2 = QStringList::split( "\n", input1[i] );
			QString name = QStringList::split( " ",  input2.grep("Package:")[0] )[1];
			QString cVersion = input2.grep("Conflicts:")[0].mid(11); // conflictVersion
			cVersion = QStringList::split( ",",  cVersion ).grep(pkgName)[0];
			cVersion = QStringList::split( "(",  cVersion )[1];
			cVersion = cVersion.replace(")", "");
			QString op = QStringList::split( " ",  cVersion )[0];
			cVersion = QStringList::split( " ",  cVersion )[1];

			if( cVersion == "")
			{
				rconflicts += name+" ";
				printf("1");
			}
			else
			{
				printf("2");
				this->shell->setCommand("if dpkg --compare-versions "+pkgVersion+" \""+op+"\" "+cVersion+"; then echo \"TRUE\"; fi");
				this->shell->start(true);
				if( this->shell->getBuffer().stripWhiteSpace() == "TRUE" )
					rconflicts += name+" ";
			}
		}
	}


	// show packages which will be removed

	QString conflicts = fields.grep( "Conflicts" )[0].mid(11);
	conflicts = conflicts.replace( ",", "" );
	conflicts = conflicts+" "+rconflicts;

	this->shell->setCommand("apt-get -s remove "+conflicts);
	this->shell->start(true);
	QStringList removeList = QStringList::split( "\n", this->shell->getBuffer().stripWhiteSpace() ).grep("Remv");


	for(uint i = 0; i < removeList.count(); i++)
	{
		QString name = QStringList::split( " ", removeList[i] )[1];
		QString sysVersion = QStringList::split( " [", removeList[i] )[1].replace("]", "");

		QListViewItem * item = new QListViewItem( dependenciesListView, 0 );	
		item->setPixmap( 0, QPixmap( "/usr/share/kdpkg/icons/remove.png") );
		item->setText( 1, name );
		item->setText( 3, sysVersion );

		removePkg += name+",";
	}
}

//----------------------------------------------------------------------------//
//--- isInstalled ------------------------------------------------------------//
//----------------------------------------------------------------------------//

bool install::isInstalled(QString input)
{
	QString package = QStringList::split( " ",  input )[0];
	QString version = QStringList::split( " (", input )[1].replace(")", "");


	this->shell->setCommand("apt-cache policy "+package);
	this->shell->start(true);
	QString sysVersion = QStringList::split( "\n", this->shell->getBuffer().stripWhiteSpace() )[1];
	sysVersion = QStringList::split( ":", sysVersion)[1].replace(" ","");


	if( sysVersion.contains("(") || sysVersion == "" )
		return FALSE;
	else if( version != "" )
	{
		QString op         = QStringList::split( " ", version )[0];
		QString pkgVersion = QStringList::split( " ", version )[1];

		this->shell->setCommand("if dpkg --compare-versions "+sysVersion+" \""+op+"\" "+pkgVersion+"; then echo \"TRUE\"; fi");
		this->shell->start(true);
		if( this->shell->getBuffer().stripWhiteSpace() == "TRUE" )
			return TRUE;
		else
			return FALSE;
	}
	else
		 return TRUE;
}

//----------------------------------------------------------------------------//
//--- about ------------------------------------------------------------------//
//----------------------------------------------------------------------------//

void install::showAbout()
{
	KAboutApplication* about = new KAboutApplication ( this );
	about->show();
}

//----------------------------------------------------------------------------//
//--- checks -----------------------------------------------------------------//
//----------------------------------------------------------------------------//

bool install::checkArchitecture()
{
	QString arch = fields.grep("Architecture:")[0].mid(14);

	if(arch == "all")
		return TRUE;

	// get architecture
	this->shell->setCommand("dpkg --print-architecture");
	this->shell->start(true);

	if( arch == this->shell->getBuffer().stripWhiteSpace() )
		return TRUE;

	return FALSE;

}


bool install::isLocked()
{
	this->shell->setCommand("apt-get install -s" );
	this->shell->start(true);
	if( this->shell->getBuffer().stripWhiteSpace().contains("...") )
		return FALSE;
	else
		return TRUE;
}





#include "install.moc"