#include "pmipkg.h"
#include "pksettings.h"
#include "package.h"
#include "packagelistitem.h"

#include <qpe/process.h>
#include <qpe/resource.h>
#include <qpe/config.h>
#include <qpe/stringutil.h>
#include <qdir.h>
#include <qfile.h>
#include <qgroupbox.h>
#include <qmultilineedit.h>
#include <qstring.h>
#include <qcheckbox.h>
#include <qtextstream.h>
#include <qtextview.h>

#include <qprogressbar.h>
#include <qpushbutton.h>
#include <qlayout.h>

#include <stdlib.h>
#include <unistd.h>

#include "mainwindow.h"


PmIpkg::PmIpkg( PackageManagerSettings* s, QWidget* p,  const char * name, WFlags f )
  	: QObject ( p )
{
  settings = s;
 	runwindow = new RunWindow( p, name, true, f );
}

PmIpkg::~PmIpkg()
{
}

//#define PROC
#define SYSTEM
int PmIpkg::runIpkg(const QString& args, const QString& dest )
{
  pvDebug(2,"PmIpkg::runIpkg "+args);

#ifdef PROC
  QStringList cmd = "ipkg ";
#endif
#ifdef SYSTEM
  QString cmd = "/usr/bin/ipkg ";
#endif
	pvDebug( 3,"PmIpkg::runIpkg got dest="+dest);
	if ( dest == "" )
	  cmd += " -dest "+settings->getDestinationName();
  else
	  cmd += " -dest "+ dest;

 	cmd += " -force-defaults ";

  if (installDialog->_force_depends)
  {
	  if (installDialog->_force_depends->isChecked())
  		 cmd += " -force-depends ";
	  if (installDialog->_force_reinstall->isChecked())
  		 cmd += " -force-reinstall ";
	  if (installDialog->_force_remove->isChecked())
  		 cmd += " -force-removal-of-essential-packages ";
  }

  out( "<hr><br>Starting to "+ args+"<br>\n");
  cmd += args;
  int r = 0;
#ifdef PROC
	QString o = "start";
  Process *ipkg = new Process( cmd );
  out( "running:<br>\n"+ipkg->arguments().join(" ")+"<br>\n" );
  QString description;
  r = ipkg->exec("",o);
  out( o );
#endif
#ifdef SYSTEM
  out( "running:<br>\n"+cmd+"<br>\n" );
  QString redirect = "/tmp/oipkg.pipe";
  cmd += " 2>&1 | tee "+redirect+" 2>&1";
  pvDebug(2, "running >"+cmd+"<");
  r = system(cmd.latin1());
  QFile f( redirect );
  QString line;
  QString oldLine;
  while ( ! f.open(IO_ReadOnly) ) {};
    QTextStream t( &f );
    while ( !t.eof() )
    {
      line = t.readLine();
			if ( line != oldLine )
   	 	{
      	out( line +"<br>" );
				oldLine = line;
    	}
    }
  f.close();
  out( "Finished!<br>");
#endif

  return r;
}

void PmIpkg::makeLinks(Package *pack)
{
	pvDebug( 2, "PmIpkg::makeLinks "+ pack->name());
  linkPackage( pack->name(), pack->dest() );
}

QStringList* PmIpkg::getList( QString packFileName, QString d )
{
	QString dest = settings->getDestinationUrlByName( d );
 	dest = dest==""?d:dest;
  if (dest == "/" ) return 0;
	{
    Config cfg( "oipkg", Config::User );
    cfg.setGroup( "Common" );
    QString statusDir = cfg.readEntry( "statusDir", "" );
	}
 	packFileName = dest+"/"+statusDir+"/info/"+packFileName+".list";
 	QFile f( packFileName );
 	if ( ! f.open(IO_ReadOnly) )
  {
   	pvDebug(1," Panik!  Could not open");
  	out( "<b>Panik!</b> Could not open:<br>"+packFileName );
   	return (QStringList*)0;
  }
  QStringList *fileList = new QStringList();
  QTextStream t( &f );
  while ( !t.eof() )
    {
      *fileList += t.readLine();
    }	
  return fileList;
}

void PmIpkg::linkPackage( QString packFileName, QString dest )
{
	QStringList *fileList = getList( packFileName, dest );
 	processFileList( fileList, dest );
  delete fileList;
}

void PmIpkg::processFileList( QStringList *fileList, QString d )
{
	if (!fileList) return;
  for (uint i=0; i < fileList->count(); i++)
    {
      QString dest = settings->getDestinationUrlByName( d );
		 	dest = dest==""?d:dest;
      processLinkDir( (*fileList)[i], dest );
    }	
}


void PmIpkg::processLinkDir( QString file, QString dest )
{
	pvDebug( 4,"PmIpkg::processLinkDir "+file+" to "+ dest);
 	if (linkOpp==createLink) pvDebug( 4,"opp: createLink");
 	if (linkOpp==removeLink) pvDebug( 4,"opp: removeLink");
	if ( dest == "???" || dest == "" ) return;
  QString destFile = file;
	file = dest+"/"+file;
 	if (file == dest) return;
  QFileInfo fileInfo( file );
  if ( fileInfo.isDir() )
  {
    pvDebug(4, "process dir "+file);
  	QDir destDir( destFile );
    if (linkOpp==createLink) destDir.mkdir( destFile, true );
    QDir d( file );
//    d.setFilter( QDir::Files | QDir::Hidden | QDir::NoSymLinks );
    const QFileInfoList *list = d.entryInfoList();
    QFileInfoListIterator it( *list );
    QFileInfo *fi;
    while ( (fi=it.current()) )
    {
    	pvDebug(4, "processLinkDir "+fi->absFilePath());
  		processLinkDir( fi->absFilePath(), dest );      			
			++it;
    }
  } else
  if ( fileInfo.isFile() )
  {
    const char *instFile = strdup( (file).ascii() );
    const char *linkFile = strdup(  (destFile).ascii());
    if( linkOpp==createLink )
		{
    	pvDebug(4, "linking: "+file+" -> "+destFile );
    	symlink( instFile, linkFile );
  	}
  }  else  {
    const char *linkFile = strdup(  (destFile).ascii());
    if( linkOpp==removeLink )
    {
      QFileInfo toRemoveLink( destFile );
    	if ( !QFile::exists( file ) && toRemoveLink.isSymLink() )
     	{
	      pvDebug(4,"removing "+destFile+" no "+file);
     		unlink( linkFile ); 	
      }
    }
  }
}

void PmIpkg::loadList( PackageList *pl )
{   	
  for( Package *pack = pl->first();pack ; (pack = pl->next())  )
  {
  	if ( pack && (pack->name() != "") && pack)
		{
		  if ( pack->toInstall() )
	      to_install.append( pack );
		  if ( pack->toRemove() )
	      to_remove.append( pack );
		}
  }
}

void PmIpkg::commit()
{   	
  int sizecount = 0;
  installDialog = new InstallDialog(settings,0,0,true);
	QCheckListItem *toRemoveItem = new QCheckListItem( installDialog->ListViewPackages, QObject::tr("To remove") );
	QCheckListItem *toInstallItem = new QCheckListItem( installDialog->ListViewPackages, QObject::tr("To install") );
 	toRemoveItem->setOpen( true );
	toInstallItem->setOpen( true );
  for (uint i=0; i < to_remove.count(); i++)
  {
  	sizecount += 1;
    toRemoveItem->insertItem( new PackageListItem(installDialog->ListViewPackages, to_remove.at(i),settings) );
 	} 	
  for (uint i=0; i < to_install.count(); i++)
  {
  	sizecount += to_install.at(i)->size().toInt();
    toInstallItem->insertItem( new PackageListItem(installDialog->ListViewPackages, to_install.at(i),settings) );
  }
  runwindow->progress->setTotalSteps(sizecount);
  qDebug("Install size %i",sizecount);
  installDialog->showMaximized();
  if ( installDialog->exec() ) doIt();
 	installDialog->close();
  runwindow->showMaximized();
  out(tr("<b>All done.</b>"));
}

void PmIpkg::doIt()
{
	show( true );
 	remove();
  install();
}


void PmIpkg::remove()
{
 	if ( to_remove.count() == 0 ) return;

	out("<b>"+tr("Removing")+"<br>"+tr("please wait")+"</b><br><hr>");

	QStringList *fileList;
  for (uint i=0; i < to_remove.count(); i++)
  {
		if ( to_remove.at(i)->link() )fileList = getList( to_remove.at(i)->name(), to_remove.at(i)->dest() );     	
    if ( runIpkg("remove " + to_remove.at(i)->name(), to_remove.at(i)->dest() ) == 0)
    {
      runwindow->progress->setProgress( 1 );
     	linkOpp = removeLink;
	   	if ( to_remove.at(i)->link() )
     	{
					out( "<br>removing links<br>" );
  				out( "for package "+to_remove.at(i)->name()+" in "+to_remove.at(i)->dest()+"<br>" );
      		processFileList( fileList, to_remove.at(i)->dest() );
      }
    	to_remove.at(i)->processed();
     	to_remove.take( i );       	
      out("<br><hr>");
 		}else{
     	out("<b>"+tr("Error while removing")+"</b><hr>"+to_remove.at(i)->name());
    }
	  if ( to_remove.at(i)->link() )delete fileList;
  }
  to_remove.clear();
  out("<br>");
}


void PmIpkg::install()
{
 	if ( to_install.count() == 0 ) return;
	out("<b>"+tr("Installing")+"<br>"+tr("please wait")+"</b><br>"); 	
  for (uint i=0; i < to_install.count(); i++)
  {
	  if ( runIpkg("install " + to_install.at(i)->installName(), to_install.at(i)->dest() ) == 0 )
		{    	
    	runwindow->progress->setProgress( to_install.at(i)->size().toInt() );
      linkOpp = createLink;
	    if ( to_install.at(i)->link() )
      {
				out( "<br>creating links<br>" );
  			out( "for package "+to_install.at(i)->name()+" in "+to_install.at(i)->dest()+"<br>" );
				makeLinks( to_install.at(i) );
     	}
     	to_install.at(i)->processed();
      to_install.take( i );
      out("<br><hr>");
  	}else{
     	out("<b>"+tr("Error while installing")+"</b><hr>"+to_install.at(i)->name());
    }
   }
   out("<br>");
   to_install.clear();
}

void PmIpkg::createLinks( const QString &dest )
{
	pvDebug(2,"PmIpkg::createLinks "+dest);
	linkOpp=createLink;
 	QString url = settings->getDestinationUrlByName( dest );
  url = url==""?dest:url;
	processLinkDir( "/opt", url );
	processLinkDir( "/usr", url );
}

void PmIpkg::removeLinks( const QString &dest )
{
	pvDebug(2,"PmIpkg::removeLinks "+dest);
	linkOpp=removeLink;
 	QString url = settings->getDestinationUrlByName( dest );
  url = url==""?dest:url;
	processLinkDir( "/opt", url );
	processLinkDir( "/usr", url );
}

void PmIpkg::update()
{
	show( false );
	runIpkg( "update" );
 	runwindow->close();
}

void PmIpkg::out( QString o )
{
	runwindow->outPut->append(o);	
 	//runwindow->outPut->setCursorPosition(0, runwindow->outPut->contentsHeight());
//	runwindow->outPut->setText( runwindow->outPut->text()+o );
  runwindow->outPut->setContentsPos(0, runwindow->outPut->contentsHeight());
}


void PmIpkg::showButtons(bool b)
{
	if ( b )
 	{
		runwindow->cancelButton->hide();
 		runwindow->doItButton->hide();
	  runwindow->removeButton->hide();
  	runwindow->installButton->hide();
  }else{
		runwindow->cancelButton->show();
 		runwindow->doItButton->show();
	  runwindow->removeButton->show();
  	runwindow->installButton->show();

  }
}

void PmIpkg::show(bool b)
{
	if (!runwindow->isVisible())
	  runwindow->showMaximized();
	showButtons(b);
	if ( !b )
 		runwindow->progress->hide();
  else
 		runwindow->progress->show();
}

void PmIpkg::installFile(const QString &fileName, const QString &dest)
{

	to_install.clear();
  to_remove.clear();
	pvDebug( 2,"PmIpkg::installFile "+ fileName);
 	Package *p = new Package(fileName,settings);
  if ( dest!="") p->setDest( dest );
	to_install.append( p );
	commit();
 	delete p;
}

void PmIpkg::removeFile(const QString &fileName, const QString &dest)
{

	to_install.clear();
  to_remove.clear();
	pvDebug( 2,"PmIpkg::removeFile "+ fileName);
 	Package *p = new Package(fileName,settings);
  if ( dest!="") p->setDest( dest );
	to_remove.append( p );
	commit();
 	delete p;
}