/*  FileUtil.cpp
 *
 *  Copyright (C) 2015  Jaye Evins <evins@snaught.com>
 *
 *  This file is part of gLabels-qt.
 *
 *  gLabels-qt 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  gLabels-qt 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 gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "FileUtil.h"

#include "Config.h"

#include <QApplication>
#include <QStandardPaths>


namespace glabels
{
	namespace model
	{

		QString FileUtil::addExtension( const QString& rawFilename, const QString& extension )
		{
			if ( rawFilename.endsWith( extension ) )
			{
				return rawFilename;
			}

			return rawFilename + extension;
		}


		QDir FileUtil::systemTemplatesDir()
		{
			QDir dir;

			// First, try finding templates directory relative to application path
			dir.cd( QApplication::applicationDirPath() );
			if ( (dir.dirName() == "bin") &&
			     dir.cdUp() && dir.cd( "share" ) && dir.cd( "glabels-qt" ) && dir.cd( "templates" ) )
			{
				return dir;
			}

			// Next, try running out of the source directory.
			if ( dir.cd( Config::PROJECT_SOURCE_DIR ) && dir.cd( "templates" ) )
			{
				return dir;
			}

			qFatal( "Cannot locate system template directory!" );
			return QDir("/");
		}


		QDir FileUtil::manualUserTemplatesDir()
		{
			// Location for manually created user-defined templates
			QDir dir( QStandardPaths::writableLocation(QStandardPaths::HomeLocation) );
			dir.mkpath( ".glabels" );
			dir.cd( ".glabels" );

			return dir;
		}
		

		QDir FileUtil::userTemplatesDir()
		{
			// Location for user-defined templates created using TemplateDesigner
			QDir dir( QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation) );
			dir.mkpath( "." );

			return dir;
		}
		

		QDir FileUtil::translationsDir()
		{
			QDir dir;

			// First, try finding translations directory relative to application path
			dir.cd( QApplication::applicationDirPath() );
			if ( (dir.dirName() == "bin") &&
			     dir.cdUp() && dir.cd( "share" ) && dir.cd( "glabels-qt" ) && dir.cd( "translations" ) )
			{
				return dir;
			}

			// Next, try running out of the source directory.
			if ( dir.cd( Config::PROJECT_BUILD_DIR ) && dir.cd( "translations" ) )
			{
				return dir;
			}

			qFatal( "Cannot locate system template directory!" );
			return QDir("/");
		}


		QString FileUtil::makeRelativeIfInDir( const QDir&    dir,
		                                       const QString& filename )
		{
			QString relativeFilePath = dir.relativeFilePath( filename ); // Note: directory separators canonicalized to slash by Qt path methods
			if ( !relativeFilePath.startsWith( "../" ) )
			{
				return relativeFilePath;
			}
			return filename;
		}

	}
}