src/ldpaths.cpp

/*
 *  LDForge: LDraw parts authoring CAD
 *  Copyright (C) 2013 - 2017 Teemu Piippo
 *
 *  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 3 of the License, or
 *  (at your option) any later version.
 *
 *  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, see <http://www.gnu.org/licenses/>.
 */

#include <QDir>
#include "ldpaths.h"
#include "mainwindow.h"
#include "dialogs/ldrawpathdialog.h"

LDPaths::LDPaths(QObject* parent) :
    QObject {parent},
    m_dialog {nullptr} {}

LDPaths::~LDPaths()
{
	delete m_dialog;
}

bool LDPaths::checkPaths()
{
	QString pathconfig = configuration().lDrawPath();

	if (configurePaths (pathconfig))
	{
		return true;
	}
	else
	{
		m_dialog = new LDrawPathDialog (pathconfig, false);
		connect(m_dialog, &LDrawPathDialog::pathChanged, this, &LDPaths::configurePaths);

		if (m_dialog->exec() != QDialog::Accepted)
			return false;

		configuration().setLDrawPath(m_dialog->path());
		return true;
	}
}


bool LDPaths::isValid (const QDir& dir) const
{
	if (dir.exists())
	{
		if (dir.isReadable())
		{
			QStringList mustHave = { "LDConfig.ldr", "parts", "p" };
			QStringList contents = dir.entryList (mustHave);
	
			if (countof(contents) == countof(mustHave))
				m_error = "";
			else
				m_error = "That is not an LDraw directory! It must<br />have LDConfig.ldr, parts/ and p/.";
		}
		else
			m_error = "That directory cannot be read.";
	}
	else
		m_error = "That directory does not exist.";
	
	return m_error.isEmpty();
}


bool LDPaths::configurePaths (QString path)
{
	QDir dir {path};
	bool ok = isValid(dir);

	if (ok)
	{
		baseDir() = dir;
		ldConfigPath() = format("%1/LDConfig.ldr", path);
		partsDir() = path + "/parts";
		primitivesDir() = path + "/p";
	}

	if (m_dialog)
		m_dialog->setStatusText(m_error.isEmpty() ? "OK" : m_error, ok);

	return ok;
}


QString& LDPaths::ldConfigPath()
{
	static QString value;
	return value;
}


QDir& LDPaths::primitivesDir()
{
	static QDir value;
	return value;
}


QDir& LDPaths::partsDir()
{
	static QDir value;
	return value;
}


QDir& LDPaths::baseDir()
{
	static QDir value;
	return value;
}