/* Copyright (C) 2014
 * swift Project Community / Contributors
 *
 * This file is part of swift Project. It is subject to the license terms in the LICENSE file found in the top-level
 * directory of this distribution and at http://www.swift-project.org/license.html. No part of Swift Project,
 * including this file, may be copied, modified, propagated, or distributed except according to the terms
 * contained in the LICENSE file.
 */

#ifndef BLACKMISC_LOGCATEGORY_H
#define BLACKMISC_LOGCATEGORY_H

//! \file

#include "sequence.h"

namespace BlackMisc
{
    /*!
     * A log category is an arbitrary string tag which can be attached to log messages.
     *
     * A log handler can filter messages based on their categories.
     */
    class CLogCategory : public CValueObjectStdTuple<CLogCategory>
    {
    public:
        //! \name Predefined special categories (public static methods)
        //! @{

        //! Uncategorized
        static const CLogCategory &uncategorized()
        {
            static const CLogCategory cat { "swift.uncategorized" };
            return cat;
        }

        //! Validation
        static const CLogCategory &validation()
        {
            static const CLogCategory cat { "swift.validation" };
            return cat;
        }

        //! Settings updates
        static const CLogCategory &settingsUpdate()
        {
            static const CLogCategory cat { "swift.settings.update" };
            return cat;
        }

        //! Contexts
        static const CLogCategory &context()
        {
            static const CLogCategory cat { "swift.context" };
            return cat;
        }

        //! Context slots
        static const CLogCategory &contextSlot()
        {
            static const CLogCategory cat { "swift.context.slot" };
            return cat;
        }

        //! GUI components
        static const CLogCategory &guiComponent()
        {
            static const CLogCategory cat { "swift.gui.component" };
            return cat;
        }

        //! All predefined special categories
        static const QList<CLogCategory> &allSpecialCategories()
        {
            static const QList<CLogCategory> cats
            {
                uncategorized(),
                validation(),
                settingsUpdate(),
                context(),
                contextSlot(),
                guiComponent()
            };
            return cats;
        }

        //! @}

        //! Constructor.
        CLogCategory() = default;

        //! Constructor.
        CLogCategory(const QString &categoryString) : m_string(categoryString) {}

        //! Constructor.
        CLogCategory(const char *categoryString) : m_string(categoryString) {}

        //! Returns true if the category string starts with the given prefix.
        bool startsWith(const QString &prefix) const { return m_string.startsWith(prefix); }

        //! Returns true if the category string ends with the given suffix.
        bool endsWith(const QString &suffix) const { return m_string.endsWith(suffix); }

        //! Returns true if the category string contains the given substring.
        bool contains(const QString &substring) const { return m_string.contains(substring); }

    protected:
        //! \copydoc CValueObject::convertToQString()
        virtual QString convertToQString(bool i18n = false) const override;

    private:
        BLACK_ENABLE_TUPLE_CONVERSION(CLogCategory)
        QString m_string;
    };
}

Q_DECLARE_METATYPE(BlackMisc::CLogCategory)
BLACK_DECLARE_TUPLE_CONVERSION(BlackMisc::CLogCategory, (o.m_string))

#endif