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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company
** Contact: https://www.qt.io/licensing/
**
** This file is part of UsageStatistic plugin for Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once

#include <array>

#include <QCoreApplication>
#include <QSet>

#include <KUserFeedback/AbstractDataSource>

namespace UsageStatistic {
namespace Internal {

//! Tracks which build system is used for projects
class BuildSystemSource : public QObject, public KUserFeedback::AbstractDataSource
{
    Q_OBJECT

public: // Types
    enum BuildSystem { QMake, CMake, Qbs, Autotools, Other, Count };

public:
    BuildSystemSource();
    ~BuildSystemSource() override;

public: // AbstractDataSource interface
    QString name() const override;
    QString description() const override;

    /*! The output data format is (the value is projects count):
     *  {
     *      "autotools": int,
     *      "cmake"    : int,
     *      "other"    : int,
     *      "qbs"      : int,
     *      "qmake"    : int
     *  }
     */
    QVariant data() override;

    void loadImpl(QSettings *settings) override;
    void storeImpl(QSettings *settings) override;
    void resetImpl(QSettings *settings) override;

private:
    void updateProjects();

private:
    // Index is build system type
    // Element is a set of full project paths. Full project path is used
    // as a permanent unique identifier. This identifier is only for
    // storing locally on user machine and should never be sent!
    using ProjectsByBuildSystem = std::array<QSet<QString>, Count>;
    ProjectsByBuildSystem m_projectsByBuildSystem;
};

} // namespace Internal
} // namespace UsageStatistic