/** \file CliParser.cpp
\brief To group into one class, the CLI parsing
\author alpha_one_x86
\version 0.3
\date 2010
\licence GPL3, see the file COPYING */

#include "CliParser.h"

#include <QDebug>

CliParser::CliParser(QObject *parent) :
    QObject(parent)
{
}

/** \brief method to parse the ultracopier arguments
  \param ultracopierArguments the argument list
  \param external true if the arguments come from other instance of ultracopier
*/
void CliParser::cli(const QStringList &ultracopierArguments,const bool &external,const bool &onlyCheck)
{
	ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,"ultracopierArguments: "+ultracopierArguments.join(";"));
	if(ultracopierArguments.size()==1)
	{
		if(external)
			QMessageBox::warning(NULL,tr("Warning"),tr("Ultracopier is already running, right click on its system tray icon (near the clock) to use it"));
		// else do nothing, is normal starting without arguements
		return;
	}
	if(ultracopierArguments.size()==2)
	{
		if(ultracopierArguments.last()=="quit" && external)
		{
			if(onlyCheck)
				return;
			QCoreApplication::exit();
			return;
		}
		if(ultracopierArguments.last()=="--help")
		{
			showHelp(false);
			return;
		}
		ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,"Command line not understand");
		showHelp();
		return;
	}
	if(ultracopierArguments.size()==3)
	{
		if(ultracopierArguments[1]=="Transfer-list")
		{
			if(onlyCheck)
				return;
			QFile transferFile(ultracopierArguments.last());
			if(transferFile.open(QIODevice::ReadOnly))
			{
				QString content;
				QByteArray data=transferFile.readLine(64);
				if(data.size()<=0)
				{
					ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,QString("Problem at the reading, or file size is null"));
					QMessageBox::warning(NULL,tr("Warning"),tr("Problem at the reading, or file size is null"));
					transferFile.close();
					return;
				}
				content=QString::fromUtf8(data);
				content.remove('\n');
				QStringList transferListArguments=content.split(';');
				if(transferListArguments.size()!=4 || transferListArguments[0]!="Ultracopier-0.3" || transferListArguments[1]!="Transfer-list")
				{
					ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,QString("This file is not supported transfer list"));
					QMessageBox::warning(NULL,tr("Warning"),tr("This file is not supported transfer list"));
					transferFile.close();
					return;
				}
				transferFile.close();
				emit newTransferList(transferListArguments[3],transferListArguments[2],ultracopierArguments.last());
			}
			else
			{
				ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,QString("Unable to open the transfer list file: %1").arg(transferFile.errorString()));
				QMessageBox::warning(NULL,tr("Warning"),tr("Unable to open the transfer list file"));
				return;
			}
			return;
		}
		ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,"Command line not understand");
		showHelp();
		return;
	}
	if(ultracopierArguments.size()>3)
	{
		if(ultracopierArguments[1]=="Copy" || ultracopierArguments[1]=="cp")
		{
			if(onlyCheck)
				return;
			QStringList transferList=ultracopierArguments;
			transferList.removeFirst();
			transferList.removeFirst();
			if(transferList.last()=="?")
			{
				transferList.removeLast();
				emit newCopy(transferList);
			}
			else
			{
				QString destination=transferList.last();
				transferList.removeLast();
				emit newCopy(transferList,destination);
			}
			return;
		}
		if(ultracopierArguments[1]=="Move" || ultracopierArguments[1]=="mv")
		{
			if(onlyCheck)
				return;
			QStringList transferList=ultracopierArguments;
			transferList.removeFirst();
			transferList.removeFirst();
			if(transferList.last()=="?")
			{
				transferList.removeLast();
				emit newMove(transferList);
			}
			else
			{
				QString destination=transferList.last();
				transferList.removeLast();
				emit newMove(transferList,destination);
			}
			return;
		}
		ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,"Command line not understand");
		showHelp();
		return;
	}
	ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,"Command line not understand");
	showHelp();
}

/** \brief show the help
 *\param incorrectArguments if the help is call because the arguments are wrong */
void CliParser::showHelp(const bool &incorrectArguments)
{
	if(incorrectArguments)
		qDebug() << "Incorrect arguments detected";
	qDebug() << tr("The arguments possibles are:");
	qDebug() << "--help : "+tr("To have this help");
	qDebug() << "quit : "+tr("To quit the other instance running (if have)");
	qDebug() << "Transfer-list [transfer list file] : "+tr("To pass transfer list to do");
	qDebug() << "cp [source [source2]] [destination] : "+tr("To copy sources separated by space to destination. If destination is \"?\", ultracopier will ask it to the user");
	qDebug() << "mv [source [source2]] [destination] : "+tr("Same as above, but with move");

	QString message;
	if(incorrectArguments)
		message+="<b>"+tr("Command line not understand")+"</b><br />\n";
	message+=+"<b></b>"+tr("The arguments possibles are:")+"\n<ul>";
	message+="<li><b>--help</b> : "+tr("To have this help")+"</li>\n";
	message+="<li><b>quit</b> : "+tr("To quit the other instance running (if have)")+"</li>\n";
	message+="<li><b>Transfer-list [transfer list file]</b> : "+tr("To pass transfer list to do")+"</li>\n";
	message+="<li><b>cp [source [source2]] [destination]</b> : "+tr("To copy sources separated by space to destination. If destination is \"?\", ultracopier will ask it to the user")+"</li>\n";
	message+="<li><b>mv [source [source2]] [destination]</b> : "+tr("Same as above, but with move")+"</li>\n";
	message+=+"</ul>";
	if(incorrectArguments)
		QMessageBox::warning(NULL,tr("Warning"),message);
	else
		QMessageBox::information(NULL,tr("Help"),message);
}