/*
    This file is part of the KDE Libraries

    SPDX-FileCopyrightText: 2000 Espen Sand <espen@kde.org>
    SPDX-FileCopyrightText: 2008 Friedrich W. H. Kossebau <kossebau@kde.org>
    SPDX-FileCopyrightText: 2010 Teo Mrnjavac <teo@kde.org>
    SPDX-FileCopyrightText: 2013 David Faure <faure+bluesystems@kde.org>
    SPDX-FileCopyrightText: 2017 Harald Sitter <sitter@kde.org>
    SPDX-FileCopyrightText: 2021 Julius Künzel <jk.kdedev@smartlab.uber.space>

    SPDX-License-Identifier: LGPL-2.0-or-later
*/

#ifndef KABOUTDATA_H
#define KABOUTDATA_H

#include <QSharedDataPointer>
#include <QString>
#include <QUrl>
#include <QVariant>
#include <kcoreaddons_export.h>
#include <memory>
#include <qcontainerfwd.h>

class QCommandLineParser;
class QJsonObject;
class KAboutData;
namespace KCrash
{
#ifdef KCOREADDONS_STATIC
void defaultCrashHandler(int sig);
#else
Q_DECL_IMPORT void defaultCrashHandler(int sig);
#endif
}

/**
 * @class KAboutPerson kaboutdata.h KAboutPerson
 *
 * This class is used to store information about a person or developer.
 * It can store the person's name, a task, an email address and a
 * link to a home page. This class is intended for use in the
 * KAboutData class, but it can be used elsewhere as well.
 * Normally you should at least define the person's name.
 * Creating a KAboutPerson object by yourself is relatively useless,
 * but the KAboutData methods KAboutData::authors() and KAboutData::credits()
 * return lists of KAboutPerson data objects which you can examine.
 *
 * Example usage within a main(), retrieving the list of people involved
 * with a program and re-using data from one of them:
 *
 * @code
 * KAboutData about("khello", i18n("KHello"), "0.1",
 *                   i18n("A KDE version of Hello, world!"),
 *                   KAboutLicense::LGPL,
 *                   i18n("Copyright (C) 2014 Developer"));
 *
 * about.addAuthor(i18n("Joe Developer"), i18n("developer"), "joe@host.com", 0);
 * QList<KAboutPerson> people = about.authors();
 * about.addCredit(people[0].name(), people[0].task());
 * @endcode
 */
class KCOREADDONS_EXPORT KAboutPerson
{
    Q_GADGET
    Q_PROPERTY(QString name READ name CONSTANT)
    Q_PROPERTY(QString task READ task CONSTANT)
    Q_PROPERTY(QString emailAddress READ emailAddress CONSTANT)
    Q_PROPERTY(QString webAddress READ webAddress CONSTANT)
    Q_PROPERTY(QUrl avatarUrl READ avatarUrl CONSTANT)
    friend class KAboutData;
    friend class KAboutDataPrivate;

public:
    /**
     * Convenience constructor
     *
     * @param name The name of the person.
     *
     * @param task The task of this person.
     *
     * @param emailAddress The email address of the person.
     *
     * @param webAddress Home page of the person.
     *
     * @param avatarUrl URL to the avatar of the person, since 6.0
     *
     * @p name default argument @since 5.53
     */
    explicit KAboutPerson(const QString &name = QString(),
                          const QString &task = QString(),
                          const QString &emailAddress = QString(),
                          const QString &webAddress = QString(),
                          const QUrl &avatarUrl = QUrl());

    /**
     * Copy constructor.  Performs a deep copy.
     * @param other object to copy
     */
    KAboutPerson(const KAboutPerson &other);

    ~KAboutPerson();

    /**
     * Assignment operator.  Performs a deep copy.
     * @param other object to copy
     */
    KAboutPerson &operator=(const KAboutPerson &other);

    /**
     * The person's name
     * @return the person's name (can be QString(), if it has been
     *           constructed with an empty name)
     */
    QString name() const;

    /**
     * The person's task
     * @return the person's task (can be QString(), if it has been
     *           constructed with an empty task)
     */
    QString task() const;

    /**
     * The person's email address
     * @return the person's email address (can be QString(), if it has been
     *           constructed with an empty email)
     */
    QString emailAddress() const;

    /**
     * The home page or a relevant link
     * @return the persons home page (can be QString(), if it has been
     *           constructed with an empty home page)
     */
    QString webAddress() const;

    /**
     * @return an URL pointing to the user's avatar
     * @since 6.0
     */
    QUrl avatarUrl() const;

    /**
     * Creates a @c KAboutPerson from a JSON object with the following structure:
     *
     * Key        | Accessor
     * -----------| ----------------------------
     * Name       | name()
     * Email      | emailAddress()
     * Task       | task()
     * Website    | webAddress()
     * AvatarUrl   | avatarUrl()
     *
     * The @c Name and @c Task key are translatable (by using e.g. a "Task[de_DE]" key)
     * The AvatarUrl exists since version 6.0
     *
     * @since 5.18
     */
    static KAboutPerson fromJSON(const QJsonObject &obj);

private:
    /**
     * @internal Used by KAboutData to construct translator data.
     */
    KCOREADDONS_NO_EXPORT explicit KAboutPerson(const QString &name, const QString &email, bool disambiguation);

private:
    QSharedDataPointer<class KAboutPersonPrivate> d;
};

Q_DECLARE_TYPEINFO(KAboutPerson, Q_RELOCATABLE_TYPE);

/**
 * @class KAboutLicense kaboutdata.h KAboutLicense
 *
 * This class is used to store information about a license.
 * The license can be one of some predefined, one given as text or one
 * that can be loaded from a file. This class is used in the KAboutData class.
 * Explicitly creating a KAboutLicense object is not possible.
 * If the license is wanted for a KDE component having KAboutData object,
 * use KAboutData::licenses() to get the licenses for that component.
 * If the license is for a non-code resource and given by a keyword
 * (e.g. in .desktop files), try using KAboutLicense::byKeyword().
 */
class KCOREADDONS_EXPORT KAboutLicense
{
    Q_GADGET
    Q_PROPERTY(QString name READ name CONSTANT)
    Q_PROPERTY(QString text READ text CONSTANT)
    Q_PROPERTY(KAboutLicense::LicenseKey key READ key CONSTANT)
    Q_PROPERTY(QString spdx READ spdx CONSTANT)
    friend class KAboutData;
    friend class KAboutComponent;

public:
    /**
     * Describes the license of the software; for more information see: https://spdx.org/licenses/
     */
    enum LicenseKey {
        Custom = -2, ///< Custom license
        File = -1, ///< License set from text file, see setLicenseFromPath()
        Unknown = 0, ///< Unknown license
        GPL = 1, ///< GPL
        GPL_V2 = GPL, ///< GPL_V2, this has the same value as LicenseKey::GPL, see https://spdx.org/licenses/GPL-2.0.html
        LGPL = 2, ///< LGPL
        LGPL_V2 = LGPL, ///< LGPL_V2, this has the same value as LicenseKey::LGPL, see https://spdx.org/licenses/LGPL-2.0-only.html
        BSDL = 3, ///< BSDL, see https://spdx.org/licenses/BSD-2-Clause.html
        Artistic = 4, ///< Artistic, see https://spdx.org/licenses/Artistic-2.0.html
        GPL_V3 = 5, ///< GPL_V3, see https://spdx.org/licenses/GPL-3.0.html
        LGPL_V3 = 6, ///< LGPL_V3, see https://spdx.org/licenses/LGPL-3.0-only.html
        LGPL_V2_1 = 7, ///< LGPL_V2_1 @since 5.25, see https://spdx.org/licenses/LGPL-2.1-only.html
        MIT = 8, ///< MIT @since 6.0, see https://spdx.org/licenses/MIT.html
    };
    Q_ENUM(LicenseKey)

    /**
     * Format of the license name.
     */
    enum NameFormat {
        ShortName,
        FullName,
    };
    Q_ENUM(NameFormat)

    /**
     * Whether later versions of the license are allowed.
     */
    enum VersionRestriction {
        OnlyThisVersion,
        OrLaterVersions,
    };
    Q_ENUM(VersionRestriction)

    /**
     * @since 5.53
     */
    explicit KAboutLicense();

    /**
     * Copy constructor.  Performs a deep copy.
     * @param other object to copy
     */
    KAboutLicense(const KAboutLicense &other);

    ~KAboutLicense();

    /**
     * Assignment operator.  Performs a deep copy.
     * @param other object to copy
     */
    KAboutLicense &operator=(const KAboutLicense &other);

    /**
     * Returns the full license text. If the licenseType argument of the
     * constructor has been used, any text defined by setLicenseText is ignored,
     * and the standard text for the chosen license will be returned.
     *
     * @return The license text.
     */
    QString text() const;

    /**
     * Returns the license name.
     *
     * Default argument @since 5.53
     *
     * @return The license name as a string.
     */
    QString name(KAboutLicense::NameFormat formatName = ShortName) const;

    /**
     * Returns the license key.
     *
     * @return The license key as element of KAboutLicense::LicenseKey enum.
     */
    KAboutLicense::LicenseKey key() const;

    /**
     * Returns the SPDX license expression of this license.
     * If the underlying license cannot be expressed as a SPDX expression a null string is returned.
     *
     * @note SPDX expression are expansive constructs. If you parse the return value, do it in a
     *   SPDX specification compliant manner by splitting on whitespaces to discard unwanted
     *   information or by using a complete SPDX license expression parser.
     * @note SPDX identifiers are case-insensitive. Do not use case-sensitive checks on the return
     *   value.
     * @see https://spdx.org/licenses
     * @return SPDX license expression or QString() if the license has no identifier. Compliant
     *   with SPDX 2.1.
     *
     * @since 5.37
     */
    QString spdx() const;

    /**
     * Fetch a known license by a keyword/spdx ID
     *
     * Frequently the license data is provided by a terse keyword-like string,
     * e.g. by a field in a .desktop file. Using this method, an application
     * can get hold of a proper KAboutLicense object, providing that the
     * license is one of the several known to KDE, and use it to present
     * more human-readable information to the user.
     *
     * Keywords are matched by stripping all whitespace and lowercasing.
     * The known keywords correspond to the KAboutLicense::LicenseKey enumeration,
     * e.g. any of "LGPLV3", "LGPLv3", "LGPL v3" would match KAboutLicense::LGPL_V3.
     * If there is no match for the keyword, a valid license object is still
     * returned, with its name and text informing about a custom license,
     * and its key equal to KAboutLicense::Custom.
     *
     * @param keyword The license keyword.
     * @return The license object.
     *
     * @see KAboutLicense::LicenseKey
     */
    static KAboutLicense byKeyword(const QString &keyword);

private:
    /**
     * @internal Used by KAboutData to construct a predefined license.
     */
    KCOREADDONS_NO_EXPORT explicit KAboutLicense(enum KAboutLicense::LicenseKey licenseType,
                                                 enum KAboutLicense::VersionRestriction versionRestriction,
                                                 const KAboutData *aboutData);
    /**
     * @internal Used by KAboutData to construct a predefined license.
     */
    KCOREADDONS_NO_EXPORT explicit KAboutLicense(enum KAboutLicense::LicenseKey licenseType, const KAboutData *aboutData);
    /**
     * @internal Used by KAboutData to construct a KAboutLicense
     */
    KCOREADDONS_NO_EXPORT explicit KAboutLicense(const KAboutData *aboutData);
    /**
     * @internal Used by KAboutData to construct license by given text
     */
    KCOREADDONS_NO_EXPORT void setLicenseFromPath(const QString &pathToFile);
    /**
     * @internal Used by KAboutData to construct license by given text
     */
    KCOREADDONS_NO_EXPORT void setLicenseFromText(const QString &licenseText);

private:
    QSharedDataPointer<class KAboutLicensePrivate> d;
};

Q_DECLARE_TYPEINFO(KAboutLicense, Q_RELOCATABLE_TYPE);

/**
 * @class KAboutComponent kaboutdata.h KAboutComponent
 *
 * This class is used to store information about a third party component.
 * It can store the component's name, a description, a link to a website
 * and the license of the libary. This class is intended for use in the
 * KAboutData class, but it can be used elsewhere as well.
 * Normally you should at least define the libary's name.
 * Creating a KAboutComponent object by yourself is relatively useless,
 * but the KAboutData method KAboutData::libaries() return lists of
 * KAboutComponent data objects which you can examine.
 *
 * Example usage within a main(), retrieving the list of components used
 * by a program and re-using data from one of them:
 *
 * @code
 * KAboutData about("khello", i18n("KHello"), "0.1",
 *                   i18n("A KDE version of Hello, world!"),
 *                   KAboutLicense::LGPL,
 *                   i18n("Copyright (C) 2014 Developer"));
 *
 * about.addComponent(i18n("Awsom Lib"),
 *                  i18n("Does awesom stuff. Copyright (C) 2014"),
 *                  i18n("1.02.3"),
 *                  "http://example.com",
 *                  KAboutLicense::LGPL);
 * QList<KAboutComponent> components = about.components();
 * @endcode
 *
 * @since 5.84
 */
class KCOREADDONS_EXPORT KAboutComponent
{
    Q_GADGET
    Q_PROPERTY(QString name READ name CONSTANT)
    Q_PROPERTY(QString description READ description CONSTANT)
    Q_PROPERTY(QString webAddress READ webAddress CONSTANT)
    Q_PROPERTY(KAboutLicense licenses READ license CONSTANT)
    Q_PROPERTY(QString version READ version CONSTANT)
    friend class KAboutData;
    friend class KAboutDataPrivate;

public:
    /**
     * Convenience constructor
     *
     * @param name The name of the component.
     *
     * @param description The description of this component.
     *
     * @param version The version of this component.
     *
     * @param webAddress Website of the component.
     *
     * @param licenseType The license identifier of the component.
     *
     * @p name default argument
     */
    explicit KAboutComponent(const QString &name = QString(),
                             const QString &description = QString(),
                             const QString &version = QString(),
                             const QString &webAddress = QString(),
                             enum KAboutLicense::LicenseKey licenseType = KAboutLicense::Unknown);

    /**
     * Convenience constructor
     *
     * @param name The name of the component.
     *
     * @param description The description of this component.
     *
     * @param version The version of this component.
     *
     * @param webAddress Website of the component.
     *
     * @param pathToLicenseFile Path to the file in the local filesystem containing the license text.
     *        The file format has to be plain text in an encoding compatible to the local.
     *
     * @p name default argument
     */
    explicit KAboutComponent(const QString &name,
                             const QString &description,
                             const QString &version,
                             const QString &webAddress,
                             const QString &pathToLicenseFile);

    /**
     * Copy constructor. Performs a deep copy.
     * @param other object to copy
     */
    KAboutComponent(const KAboutComponent &other);

    ~KAboutComponent();

    /**
     * Assignment operator. Performs a deep copy.
     * @param other object to copy
     */
    KAboutComponent &operator=(const KAboutComponent &other);

    /**
     * The component's name
     * @return the component's name (can be QString(), if it has been
     *           constructed with an empty name)
     */
    QString name() const;

    /**
     * The component's description
     * @return the component's description (can be empty)
     */
    QString description() const;

    /**
     * The component's version
     * @return the component's task (can be empty)
     */
    QString version() const;

    /**
     * The website or a relevant link
     * @return the component's website (can be empty)
     */
    QString webAddress() const;

    /**
     * The component's license
     * @return the component's KAboutLicense
     */
    KAboutLicense license() const;

private:
    QSharedDataPointer<class KAboutComponentPrivate> d;
};

Q_DECLARE_TYPEINFO(KAboutComponent, Q_RELOCATABLE_TYPE);

/**
 * @class KAboutData kaboutdata.h KAboutData
 *
 * This class is used to store information about a program or plugin.
 * It can store such values as version number, program name, home page, address
 * for bug reporting, multiple authors and contributors
 * (using KAboutPerson), license and copyright information.
 *
 * Currently, the values set here are shown by the "About" box
 * (see KAboutApplicationDialog), used by the bug report dialog (see KBugReport),
 * and by the help shown on command line (see KAboutData::setupCommandLine()).
 *
 * Porting Notes: Since KDE Frameworks 5.0, the translation catalog mechanism
 * must be provided by your translation framework to load the correct catalog
 * instead (eg: KLocalizedString::setApplicationDomain() for KI18n, or
 * QCoreApplication::installTranslator() for Qt's translation system). This
 * applies to the old setCatalogName() and catalogName() members. But see also
 * K4AboutData in kde4support as a compatibility class.
 *
 * Example:
 * Setting the metadata of an application using KAboutData in code also relying
 * on the KDE Framework modules KI18n and KDBusAddons:
 * @code
 * // create QApplication instance
 * QApplication app(argc, argv);
 * // setup translation string domain for the i18n calls
 * KLocalizedString::setApplicationDomain("foo");
 * // create a KAboutData object to use for setting the application metadata
 * KAboutData aboutData("foo", i18n("Foo"), "0.1",
 *                      i18n("To Foo or not To Foo"),
 *                      KAboutLicense::LGPL,
 *                      i18n("Copyright 2017 Bar Foundation"), QString(),
 *                      "https://www.foo-the-app.net");
 * // overwrite default-generated values of organizationDomain & desktopFileName
 * aboutData.setOrganizationDomain("barfoundation.org");
 * aboutData.setDesktopFileName("org.barfoundation.foo");
 *
 * // set the application metadata
 * KAboutData::setApplicationData(aboutData);
 * // in GUI apps set the window icon manually, not covered by KAboutData
 * // needed for environments where the icon name is not extracted from
 * // the information in the application's desktop file
 * QApplication::setWindowIcon(QIcon::fromTheme(QStringLiteral("foo")));
 *
 * // integrate with commandline argument handling
 * QCommandLineParser parser;
 * aboutData.setupCommandLine(&parser);
 * // setup of app specific commandline args
 * [...]
 * parser.process(app);
 * aboutData.processCommandLine(&parser);
 *
 * // with the application metadata set, register to the D-Bus session
 * KDBusService programDBusService(KDBusService::Multiple | KDBusService::NoExitOnFailure);
 * @endcode
 *
 * @short Holds information needed by the "About" box and other
 * classes.
 * @author Espen Sand (espen@kde.org), David Faure (faure@kde.org)
 *
 */
class KCOREADDONS_EXPORT KAboutData
{
    Q_GADGET
    Q_PROPERTY(QString displayName READ displayName CONSTANT)
    Q_PROPERTY(QString productName READ productName CONSTANT)
    Q_PROPERTY(QString componentName READ componentName CONSTANT)
    Q_PROPERTY(QVariant programLogo READ programLogo CONSTANT)
    Q_PROPERTY(QString shortDescription READ shortDescription CONSTANT)
    Q_PROPERTY(QString homepage READ homepage CONSTANT)
    Q_PROPERTY(QString bugAddress READ bugAddress CONSTANT)
    Q_PROPERTY(QString version READ version CONSTANT)
    Q_PROPERTY(QString otherText READ otherText CONSTANT)
    Q_PROPERTY(QList<KAboutPerson> authors READ authors CONSTANT) // constant in practice as addAuthor is not exposed to Q_GADGET
    Q_PROPERTY(QList<KAboutPerson> credits READ credits CONSTANT)
    Q_PROPERTY(QList<KAboutPerson> translators READ translators CONSTANT)
    Q_PROPERTY(QList<KAboutComponent> components READ components CONSTANT)
    Q_PROPERTY(QList<KAboutLicense> licenses READ licenses CONSTANT)
    Q_PROPERTY(QString copyrightStatement READ copyrightStatement CONSTANT)
    Q_PROPERTY(QString desktopFileName READ desktopFileName CONSTANT)
public:
    /**
     * Returns the KAboutData for the application.
     *
     * This contains information such as authors, license, etc.,
     * provided that setApplicationData has been called before.
     * If not called before, the returned KAboutData will be initialized from the
     * equivalent properties of QCoreApplication (and its subclasses),
     * if an instance of that already exists.
     * For the list of such properties see setApplicationData
     * (before 5.22: limited to QCoreApplication::applicationName).
     * @see setApplicationData
     */
    static KAboutData applicationData();

    /**
     * Sets the application data for this application.
     *
     * In addition to changing the result of applicationData(), this initializes
     * the equivalent properties of QCoreApplication (and its subclasses) with
     * information from @p aboutData, if an instance of that already exists.
     * Those properties are:
       <ul>
       <li>QCoreApplication::applicationName</li>
       <li>QCoreApplication::applicationVersion</li>
       <li>QCoreApplication::organizationDomain</li>
       <li>QGuiApplication::applicationDisplayName</li>
       <li>QGuiApplication::desktopFileName (since 5.16)</li>
       </ul>
     * @see applicationData
     */
    static void setApplicationData(const KAboutData &aboutData);

public:
    /**
     * Constructor.
     *
     * Porting Note: The @p catalogName parameter present in KDE4 was
     * deprecated and removed. See also K4AboutData
     * in kde4support if this feature is needed for compatibility purposes, or
     * consider using componentName() instead.
     *
     * @param componentName The program name or plugin name used internally.
     * Example: QStringLiteral("kwrite"). This should never be translated.
     *
     * @param displayName A displayable name for the program or plugin. This string
     *        should be translated. Example: i18n("KWrite")
     *
     * @param version The component version string. Example: QStringLiteral("1.0").
     *
     * @param shortDescription A short description of what the component does.
     *        This string should be translated.
     *        Example: i18n("A simple text editor.")
     *
     * @param licenseType The license identifier. Use setLicenseText or
              setLicenseTextFile if you use a license not predefined here.
     *
     * @param copyrightStatement A copyright statement, that can look like this:
     *        i18n("Copyright (C) 1999-2000 Name"). The string specified here is
     *        taken verbatim; the author information from addAuthor is not used.
     *
     * @param otherText Some free form text, that can contain any kind of
     *        information. The text can contain newlines. This string
     *        should be translated.
     *
     * @param homePageAddress The URL to the component's homepage, including
     *        URL scheme. "http://some.domain" is correct, "some.domain" is
     *        not. Since KDE Frameworks 5.17, https and other valid URL schemes
     *        are also valid. See also the note below.
     *
     * @param bugAddress The bug report address string, an email address or a URL.
     *        This defaults to the kde.org bug system.
     *
     * @note The @p homePageAddress argument is used to derive a default organization
     * domain for the application (which is used to register on the session D-Bus,
     * locate the appropriate desktop file, etc.), by taking the host name and dropping
     * the first component, unless there are less than three (e.g. "www.kde.org" -> "kde.org").
     * Use both setOrganizationDomain(const QByteArray&) and setDesktopFileName() if their default values
     * do not have proper values.
     *
     * @see setOrganizationDomain(const QByteArray&), setDesktopFileName(const QString&)
     */
    // KF6: remove constructor that includes catalogName, and put default
    //      values back in for shortDescription and licenseType
    KAboutData(const QString &componentName,
               const QString &displayName,
               const QString &version,
               const QString &shortDescription,
               enum KAboutLicense::LicenseKey licenseType,
               const QString &copyrightStatement = QString(),
               const QString &otherText = QString(),
               const QString &homePageAddress = QString(),
               const QString &bugAddress = QStringLiteral("submit@bugs.kde.org"));

    /**
     * Constructor.
     *
     * @param componentName The program name or plugin name used internally.
     * Example: "kwrite".
     *
     * @param displayName A displayable name for the program or plugin. This string
     *        should be translated. Example: i18n("KWrite")
     *
     * @param version The component version string.
     *
     * Sets the property desktopFileName to "org.kde."+componentName and
     * the property organizationDomain to "kde.org".
     *
     * Default arguments @since 5.53
     *
     * @see setOrganizationDomain(const QByteArray&), setDesktopFileName(const QString&)
     */
    explicit KAboutData(const QString &componentName = {}, const QString &displayName = {}, const QString &version = {});

    /**
     * Copy constructor.  Performs a deep copy.
     * @param other object to copy
     */
    KAboutData(const KAboutData &other);

    /**
     * Assignment operator.  Performs a deep copy.
     * @param other object to copy
     */
    KAboutData &operator=(const KAboutData &other);

    ~KAboutData();

    /**
     * Defines an author.
     *
     * You can call this function as many times as you need. Each entry is
     * appended to a list. The person in the first entry is assumed to be
     * the leader of the project.
     *
     * @param name The developer's name. It should be translated.
     *
     * @param task What the person is responsible for. This text can contain
     *             newlines. It should be translated.
     *             Can be left empty.
     *
     * @param emailAddress An Email address where the person can be reached.
     *                     Can be left empty.
     *
     * @param webAddress The person's homepage or a relevant link.
     *        Start the address with "http://". "http://some.domain" is
     *        correct, "some.domain" is not. Can be left empty.
     *
     * @param avatarUrl URL to the avatar of the person
     */
    KAboutData &addAuthor(const QString &name,
                          const QString &task = QString(),
                          const QString &emailAddress = QString(),
                          const QString &webAddress = QString(),
                          const QUrl &avatarUrl = QUrl());

    /**
     * @overload
     * @since 6.0
     */
    KAboutData &addAuthor(const QString &name, const QString &task, const QString &emailAddress, const QString &webAddress, const QString &kdeStoreUsername)
    {
        return addAuthor(name, task, emailAddress, webAddress, QUrl(QStringLiteral("https://store.kde.org/avatar/") + kdeStoreUsername));
    }

    /**
     * Defines a person that deserves credit.
     *
     * You can call this function as many times as you need. Each entry
     * is appended to a list.
     *
     * @param name The person's name. It should be translated.
     *
     * @param task What the person has done to deserve the honor. The
     *        text can contain newlines. It should be translated.
     *        Can be left empty.
     *
     * @param emailAddress An email address when the person can be reached.
     *        Can be left empty.
     *
     * @param webAddress The person's homepage or a relevant link.
     *        Start the address with "http://". "http://some.domain" is
     *        is correct, "some.domain" is not. Can be left empty.
     *
     * @param avatarUrl URL to the avatar of the person
     */
    KAboutData &addCredit(const QString &name,
                          const QString &task = QString(),
                          const QString &emailAddress = QString(),
                          const QString &webAddress = QString(),
                          const QUrl &avatarUrl = QUrl());

    /**
     * @overload
     * @since 6.0
     */
    KAboutData &addCredit(const QString &name, const QString &task, const QString &emailAddress, const QString &webAddress, const QString &kdeStoreUsername)
    {
        return addCredit(name, task, emailAddress, webAddress, QUrl(QStringLiteral("https://store.kde.org/avatar/") + kdeStoreUsername));
    }

    /**
     * @brief Sets the name(s) of the translator(s) of the GUI.
     *
     * The canonical use with the ki18n framework is:
     *
     * \code
     * setTranslator(i18nc("NAME OF TRANSLATORS", "Your names"),
     *               i18nc("EMAIL OF TRANSLATORS", "Your emails"));
     * \endcode
     *
     * If you are using a KMainWindow this is done for you automatically.
     *
     * The name and emailAddress are treated as lists separated with ",".
     *
     * If the strings are empty or "Your names"/"Your emails"
     * respectively they will be ignored.
     *
     * @param name the name(s) of the translator(s)
     * @param emailAddress the email address(es) of the translator(s)
     * @see KAboutTranslator
     */
    KAboutData &setTranslator(const QString &name, const QString &emailAddress);

    /**
     * Defines a component that is used by the application.
     *
     * You can call this function as many times as you need. Each entry is
     * appended to a list.
     *
     * @param name The component's name. It should be translated.
     *
     * @param description Short description of the component and maybe
     *        copyright info. This text can contain newlines. It should
     *        be translated. Can be left empty.
     *
     * @param version The version of the component. Can be left empty.
     *
     * @param webAddress The component's homepage or a relevant link.
     *        Start the address with "http://". "http://some.domain" is
     *        correct, "some.domain" is not. Can be left empty.
     *
     * @param licenseKey The component's license identifier. Can be left empty (i.e. KAboutLicense::Unknown)
     *
     * @since 5.84
     */
    KAboutData &addComponent(const QString &name,
                             const QString &description = QString(),
                             const QString &version = QString(),
                             const QString &webAddress = QString(),
                             KAboutLicense::LicenseKey licenseKey = KAboutLicense::Unknown);

    /**
     * Defines a component that is used by the application with a custom license text file.
     *
     * You can call this function as many times as you need. Each entry is
     * appended to a list.
     *
     * @param name The component's name. It should be translated.
     *
     * @param description Short description of the component and maybe
     *        copyright info. This text can contain newlines. It should
     *        be translated. Can be left empty.
     *
     * @param version The version of the component. Can be left empty.
     *
     * @param webAddress The component's homepage or a relevant link.
     *        Start the address with "http://". "http://some.domain" is
     *        correct, "some.domain" is not. Can be left empty.
     *
     * @param pathToLicenseFile Path to the file in the local filesystem containing the license text.
     *        The file format has to be plain text in an encoding compatible to the local.
     *
     * @since 5.84
     */
    KAboutData &
    addComponent(const QString &name, const QString &description, const QString &version, const QString &webAddress, const QString &pathToLicenseFile);

    /**
     * Defines a license text, which is translated.
     *
     * Example:
     * \code
     * setLicenseText( i18n("This is my license") );
     * \endcode
     *
     * @param license The license text.
     */
    KAboutData &setLicenseText(const QString &license);

    /**
     * Adds a license text, which is translated.
     *
     * If there is only one unknown license set, e.g. by using the default
     * parameter in the constructor, that one is replaced.
     *
     * Example:
     * \code
     * addLicenseText( i18n("This is my license") );
     * \endcode
     *
     * @param license The license text.
     * @see setLicenseText, addLicense, addLicenseTextFile
     */
    KAboutData &addLicenseText(const QString &license);

    /**
     * Defines a license text by pointing to a file where it resides.
     * The file format has to be plain text in an encoding compatible to the locale.
     *
     * @param file Path to the file in the local filesystem containing the license text.
     */
    KAboutData &setLicenseTextFile(const QString &file);

    /**
     * Adds a license text by pointing to a file where it resides.
     * The file format has to be plain text in an encoding compatible to the locale.
     *
     * If there is only one unknown license set, e.g. by using the default
     * parameter in the constructor, that one is replaced.
     *
     * @param file Path to the file in the local filesystem containing the license text.
     * @see addLicenseText, addLicense, setLicenseTextFile
     */
    KAboutData &addLicenseTextFile(const QString &file);

    /**
     * Defines the component name used internally.
     *
     * @param componentName The application or plugin name. Example: "kate".
     */
    KAboutData &setComponentName(const QString &componentName);

    /**
     * Defines the displayable component name string.
     *
     * @param displayName The display name. This string should be
     *        translated.
     *        Example: i18n("Advanced Text Editor").
     */
    KAboutData &setDisplayName(const QString &displayName);

    /**
     * Defines the program logo.
     *
     * Use this if you need to have an application logo
     * in AboutData other than the application icon.
     *
     * Because KAboutData is a core class it cannot use QImage/QPixmap/QIcon directly,
     * so this is a QVariant that should contain a QImage/QPixmap/QIcon.
     *
     * QIcon should be preferred, to be able to properly handle HiDPI scaling.
     * If a QIcon is provided, it will be used at a typical size of 48x48.
     *
     * @param image logo image.
     * @see programLogo()
     */
    KAboutData &setProgramLogo(const QVariant &image);

    /**
     * Defines the program version string.
     *
     * @param version The program version.
     */
    KAboutData &setVersion(const QByteArray &version);

    /**
     * Defines a short description of what the program does.
     *
     * @param shortDescription The program description. This string should
     *        be translated. Example: i18n("An advanced text
     *        editor with syntax highlighting support.").
     */
    KAboutData &setShortDescription(const QString &shortDescription);

    /**
     * Defines the license identifier.
     *
     * @param licenseKey The license identifier.
     * @see addLicenseText, setLicenseText, setLicenseTextFile
     */
    KAboutData &setLicense(KAboutLicense::LicenseKey licenseKey);

    /**
     * Defines the license identifier.
     *
     * @param licenseKey The license identifier.
     * @param versionRestriction Whether later versions of the license are also allowed.
     *    e.g. licensed under "GPL 2.0 or at your option later versions" would be OrLaterVersions.
     * @see addLicenseText, setLicenseText, setLicenseTextFile
     *
     * @since 5.37
     */
    KAboutData &setLicense(KAboutLicense::LicenseKey licenseKey, KAboutLicense::VersionRestriction versionRestriction);

    /**
     * Adds a license identifier.
     *
     * If there is only one unknown license set, e.g. by using the default
     * parameter in the constructor, that one is replaced.
     *
     * @param licenseKey The license identifier.
     * @see setLicenseText, addLicenseText, addLicenseTextFile
     */
    KAboutData &addLicense(KAboutLicense::LicenseKey licenseKey);

    /**
     * Adds a license identifier.
     *
     * If there is only one unknown license set, e.g. by using the default
     * parameter in the constructor, that one is replaced.
     *
     * @param licenseKey The license identifier.
     * @param versionRestriction Whether later versions of the license are also allowed.
     *    e.g. licensed under "GPL 2.0 or at your option later versions" would be OrLaterVersions.
     * @see setLicenseText, addLicenseText, addLicenseTextFile
     *
     * @since 5.37
     */
    KAboutData &addLicense(KAboutLicense::LicenseKey licenseKey, KAboutLicense::VersionRestriction versionRestriction);

    /**
     * Defines the copyright statement to show when displaying the license.
     *
     * @param copyrightStatement A copyright statement, that can look like
     *        this: i18n("Copyright (C) 1999-2000 Name"). The string specified here is
     *        taken verbatim; the author information from addAuthor is not used.
     */
    KAboutData &setCopyrightStatement(const QString &copyrightStatement);

    /**
     * Defines the additional text to show in the about dialog.
     *
     * @param otherText Some free form text, that can contain any kind of
     *        information. The text can contain newlines. This string
     *        should be translated.
     */
    KAboutData &setOtherText(const QString &otherText);

    /**
     * Defines the program homepage.
     *
     * @param homepage The program homepage string.
     *        Start the address with "http://". "http://kate.kde.org"
     *        is correct but "kate.kde.org" is not.
     */
    KAboutData &setHomepage(const QString &homepage);

    /**
     * Defines the address where bug reports should be sent.
     *
     * @param bugAddress The bug report email address or URL.
     *        This defaults to the kde.org bug system.
     */
    KAboutData &setBugAddress(const QByteArray &bugAddress);

    /**
     * Defines the domain of the organization that wrote this application.
     * The domain is set to kde.org by default, or the domain of the homePageAddress constructor argument,
     * if set.
     *
     * Make sure to call setOrganizationDomain(const QByteArray&) if your product
     * is not developed inside the KDE community.
     *
     * Used e.g. for the registration to D-Bus done by KDBusService
     * from the KDE Frameworks KDBusAddons module.
     *
     * Calling this method has no effect on the value of the desktopFileName property.
     *
     * @note If your program should work as a D-Bus activatable service, the base name
     * of the D-Bus service description file or of the desktop file you install must match
     * the D-Bus "well-known name" for which the program will register.
     * For example, KDBusService will use a name created from the reversed organization domain
     * with the component name attached, so for an organization domain "bar.org" and a
     * component name "foo" the name of an installed D-Bus service file needs to be
     * "org.bar.foo.service" or the name of the installed desktop file "org.bar.foo.desktop"
     * (and the desktopFileName property accordingly set to "org.bar.foo").
     *
     * @param domain the domain name, for instance kde.org, koffice.org, etc.
     *
     * @see setDesktopFileName(const QString&)
     */
    KAboutData &setOrganizationDomain(const QByteArray &domain);

    /**
     * Defines the product name which will be used in the KBugReport dialog.
     * By default it's the componentName, but you can overwrite it here to provide
     * support for special components e.g. in the form 'product/component',
     * such as 'kontact/summary'.
     *
     * @param name The name of product
     */
    KAboutData &setProductName(const QByteArray &name);

    /**
     * Returns the application's internal name.
     * @return the internal program name.
     */
    QString componentName() const;

    /**
     * Returns the application's product name, which will be used in KBugReport
     * dialog. By default it returns componentName(), otherwise the one which is set
     * with setProductName()
     *
     * @return the product name.
     */
    QString productName() const;

    /**
     * @internal
     * Provided for use by KCrash
     */
    const char *internalProductName() const;

    /**
     * Returns the translated program name.
     * @return the program name (translated).
     */
    QString displayName() const;

    /**
     * Returns the domain name of the organization that wrote this application.
     *
     * @see setOrganizationDomain(const QByteArray&)
     */
    QString organizationDomain() const;

    /**
     * @internal
     * Provided for use by KCrash
     */
    const char *internalProgramName() const;

    /**
     * Returns the program logo image.
     *
     * Because KAboutData is a core class it cannot use QImage/QPixmap/QIcon directly,
     * so this is a QVariant containing a QImage/QPixmap/QIcon.
     *
     * @return the program logo data, or a null image if there is
     *         no custom application logo defined.
     */
    QVariant programLogo() const;

    /**
     * Returns the program's version.
     * @return the version string.
     */
    QString version() const;

    /**
     * @internal
     * Provided for use by KCrash
     */
    const char *internalVersion() const;

    /**
     * Returns a short, translated description.
     * @return the short description (translated). Can be
     *         QString() if not set.
     */
    QString shortDescription() const;

    /**
     * Returns the application homepage.
     * @return the application homepage URL. Can be QString() if
     *         not set.
     */
    QString homepage() const;

    /**
     * Returns the email address or URL for bugs.
     * @return the address where to report bugs.
     */
    QString bugAddress() const;

    /**
     * @internal
     * Provided for use by KCrash
     */
    const char *internalBugAddress() const;

    /**
     * Returns a list of authors.
     * @return author information (list of persons).
     */
    QList<KAboutPerson> authors() const;

    /**
     * Returns a list of persons who contributed.
     * @return credit information (list of persons).
     */
    QList<KAboutPerson> credits() const;

    /**
     * Returns a list of translators.
     * @return translators information (list of persons)
     */
    QList<KAboutPerson> translators() const;

    /**
     * Returns a message about the translation team.
     * @return a message about the translation team
     */
    static QString aboutTranslationTeam();

    /**
     * Returns a list of components.
     * @return component information (list of components).
     * @since 5.84
     */
    QList<KAboutComponent> components() const;

    /**
     * Returns a translated, free form text.
     * @return the free form text (translated). Can be QString() if not set.
     */
    QString otherText() const;

    /**
     * Returns a list of licenses.
     *
     * @return licenses information (list of licenses)
     */
    QList<KAboutLicense> licenses() const;

    /**
     * Returns the copyright statement.
     * @return the copyright statement. Can be QString() if not set.
     */
    QString copyrightStatement() const;

    /**
     * Returns the plain text displayed around the list of authors instead
     * of the default message telling users to send bug reports to bugAddress().
     *
     * @return the plain text displayed around the list of authors instead
     *         of the default message.  Can be QString().
     */
    QString customAuthorPlainText() const;

    /**
     * Returns the rich text displayed around the list of authors instead
     * of the default message telling users to send bug reports to bugAddress().
     *
     * @return the rich text displayed around the list of authors instead
     *         of the default message.  Can be QString().
     */
    QString customAuthorRichText() const;

    /**
     * Returns whether custom text should be displayed around the list of
     * authors.
     *
     * @return whether custom text should be displayed around the list of
     *         authors.
     */
    bool customAuthorTextEnabled() const;

    /**
     * Sets the custom text displayed around the list of authors instead
     * of the default message telling users to send bug reports to bugAddress().
     *
     * @param plainText The plain text.
     * @param richText The rich text.
     *
     * Setting both to parameters to QString() will cause no message to be
     * displayed at all.  Call unsetCustomAuthorText() to revert to the default
     * message.
     */
    KAboutData &setCustomAuthorText(const QString &plainText, const QString &richText);

    /**
     * Clears any custom text displayed around the list of authors and falls
     * back to the default message telling users to send bug reports to
     * bugAddress().
     */
    KAboutData &unsetCustomAuthorText();

    /**
     * Configures the @p parser command line parser to provide an authors entry with
     * information about the developers of the application and an entry specifying the license.
     *
     * Additionally, it will set the description to the command line parser, will add the help
     * option and if the QApplication has a version set (e.g. via KAboutData::setApplicationData)
     * it will also add the version option.
     *
     * Since 5.16 it also adds an option to set the desktop file name.
     *
     * @returns true if adding the options was successful; otherwise returns false.
     *
     * @sa processCommandLine()
     */
    bool setupCommandLine(QCommandLineParser *parser);

    /**
     * Reads the processed @p parser and sees if any of the arguments are the ones set
     * up from setupCommandLine().
     *
     * @sa setupCommandLine()
     */
    void processCommandLine(QCommandLineParser *parser);

    /**
     * Sets the base name of the desktop entry for this application.
     *
     * This is the file name, without the full path and without extension,
     * of the desktop entry that represents this application according to
     * the freedesktop desktop entry specification (e.g. "org.kde.foo").
     *
     * A default desktop file name is constructed when the KAboutData
     * object is created, using the reverse domain name of the
     * organizationDomain() and the componentName() as they are at the time
     * of the KAboutData object creation.
     * Call this method to override that default name. Typically this is
     * done when also setOrganizationDomain(const QByteArray&) or setComponentName(const QString&)
     * need to be called to override the initial values.
     *
     * The desktop file name can also be passed to the application at runtime through
     * the @c desktopfile command line option which is added by setupCommandLine(QCommandLineParser*).
     * This is useful if an application supports multiple desktop files with different runtime
     * settings.
     *
     * @param desktopFileName The desktop file name of this application
     *
     * @sa desktopFileName()
     * @sa organizationDomain()
     * @sa componentName()
     * @sa setupCommandLine(QCommandLineParser*)
     * @since 5.16
     **/
    KAboutData &setDesktopFileName(const QString &desktopFileName);

    /**
     * @returns The desktop file name of this application (e.g. "org.kde.foo")
     * @sa setDesktopFileName(const QString&)
     * @since 5.16
     **/
    QString desktopFileName() const;

private:
    friend void KCrash::defaultCrashHandler(int sig);
    // exported for KCrash, no other users intended
    static const KAboutData *applicationDataPointer();

private:
    std::unique_ptr<class KAboutDataPrivate> const d;
};

#endif