/*
    SPDX-FileCopyrightText: 2015 Gregor Mi <codestruct@posteo.org>

    SPDX-License-Identifier: LGPL-2.1-or-later
*/

#include "kmoretoolspresets.h"
#include "kmoretools_debug.h"
#include "kmoretoolspresets_p.h"
#include <QFile>
#include <QHash>

#include "kmoretools.h"

#define _ QStringLiteral

class KmtServiceInfo
{
public:
    KmtServiceInfo(const QString &desktopEntryName, const QString &homepageUrl, int maxUrlArgCount, const QString &appstreamId)
        : desktopEntryName(desktopEntryName)
        , homepageUrl(homepageUrl)
        , maxUrlArgCount(maxUrlArgCount)
        , appstreamId(appstreamId)
    {
    }

public:
    QString desktopEntryName;
    QString homepageUrl;
    int maxUrlArgCount;
    QString appstreamId;
};

namespace KMoreToolsNamespace
{
class OSDetection
{
public:
    static bool is_LinuxOSFamily_Debian()
    {
        return QFile::exists(QLatin1String("/etc/debian_version"));
    }
};
}

//
// todo later: add a property "maturity" with values "stable" > "new" > "incubating" or similar
//
KMoreToolsService *KMoreToolsPresets::registerServiceByDesktopEntryName(KMoreTools *kmt, const QString &desktopEntryName)
{
    static QHash<QString, KmtServiceInfo> dict;
    // clang-format off
#define ADD_ENTRY(desktopEntryName, maxUrlArgCount, homepageUrl, appstreamUrl) dict.insert(desktopEntryName, KmtServiceInfo(desktopEntryName, homepageUrl, maxUrlArgCount, appstreamUrl));

    //
    // definitions begin (sorted alphabetically):
    //                                              .------ If one gives more URL arguments as
    //                                              |       specified here the program will not work.
    //                                              |       Note, that there are some desktop files where _too few_
    //                                              |       arguments also lead to errors. Watch the console
    //                                              v       output for messages from the program.
    //
    ADD_ENTRY(QStringLiteral("angrysearch"),                        0, QStringLiteral("https://github.com/DoTheEvo/ANGRYsearch"), QString());
    ADD_ENTRY(QStringLiteral("com.uploadedlobster.peek"),           0, QStringLiteral("https://github.com/phw/peek"), QStringLiteral("com.uploadedlobster.peek.desktop")); // easy to use screen recorder, creates gif
    ADD_ENTRY(QStringLiteral("catfish"),                            1, QStringLiteral("http://www.twotoasts.de/index.php/catfish/"), QStringLiteral("catfish"));
    ADD_ENTRY(QStringLiteral("ding"),                               0, QStringLiteral("https://www-user.tu-chemnitz.de/~fri/ding/"), QString()); // Offline dict, Online: https://dict.tu-chemnitz.de/dings.cgi
    ADD_ENTRY(QStringLiteral("disk"),                               0, QStringLiteral("https://en.opensuse.org/YaST_Disk_Controller"), QString());
    ADD_ENTRY(QStringLiteral("fontinst"),                           0, QStringLiteral("https://docs.kde.org/?application=kcontrol/fontinst"), QString()); // good for previewing many fonts at once
    ADD_ENTRY(QStringLiteral("fontmatrix"),                         0, QStringLiteral("https://github.com/fontmatrix/fontmatrix"), QString());
    ADD_ENTRY(QStringLiteral("fsearch"),                            0, QStringLiteral("https://github.com/cboxdoerfer/fsearch"), QString());
    ADD_ENTRY(QStringLiteral("giggle"),                             1, QStringLiteral("https://wiki.gnome.org/Apps/giggle/"), QStringLiteral("giggle.desktop")); // good for searching in history
    ADD_ENTRY(QStringLiteral("git-cola-folder-handler"),            1, QStringLiteral("https://git-cola.github.io"), QStringLiteral("git-cola.desktop"));
    ADD_ENTRY(QStringLiteral("git-cola-view-history.kmt-edition"),  1, QStringLiteral("https://git-cola.github.io"), QStringLiteral("git-cola.desktop"));
    ADD_ENTRY(QStringLiteral("gitk.kmt-edition"),                   1, QStringLiteral("https://git-scm.com/docs/gitk"), QString());
    ADD_ENTRY(QStringLiteral("qgit.kmt-edition"),                   1, QStringLiteral("https://github.com/tibirna/qgit"), QString());
    ADD_ENTRY(QStringLiteral("gitg"),                               1, QStringLiteral("https://wiki.gnome.org/action/show/Apps/Gitg?action=show&redirect=Gitg"), QStringLiteral("gitg.desktop"));
    ADD_ENTRY(QStringLiteral("gnome-search-tool"),                  0, QStringLiteral("https://help.gnome.org/users/gnome-search-tool/"), QStringLiteral("gnome-search-tool.desktop")); // has good filtering options
    ADD_ENTRY(QStringLiteral("gucharmap"),                          0, QStringLiteral("https://wiki.gnome.org/action/show/Apps/Gucharmap"), QStringLiteral("gucharmap.desktop"));
    ADD_ENTRY(QStringLiteral("gparted"),                            0, QStringLiteral("https://gparted.org"), QStringLiteral("gparted.desktop"));
    ADD_ENTRY(QStringLiteral("htop"),                               0, QStringLiteral("https://hisham.hm/htop/"), QStringLiteral("htop.desktop"));
    ADD_ENTRY(QStringLiteral("hotshots"),                           1, QStringLiteral("https://sourceforge.net/projects/hotshots/"), QString());
    ADD_ENTRY(QStringLiteral("kaption"),                            0, QStringLiteral("https://www.linux-apps.com/content/show.php/?content=139302"), QString());
    ADD_ENTRY(QStringLiteral("kding"),                              0, QString(), QString()); // Offline dict; unmaintained?
    ADD_ENTRY(QStringLiteral("org.kde.kmousetool"),                 0, QStringLiteral("https://apps.kde.org/kmousetool"), QStringLiteral("org.kde.kmousetool"));
    ADD_ENTRY(QStringLiteral("org.gnome.clocks"),                   0, QStringLiteral("https://wiki.gnome.org/Apps/Clocks"), QStringLiteral("org.gnome.clocks.desktop"));
    ADD_ENTRY(QStringLiteral("org.kde.filelight"),                  1, QStringLiteral("https://apps.kde.org/filelight"), QStringLiteral("org.kde.filelight.desktop"));
    ADD_ENTRY(QStringLiteral("org.kde.kcharselect"),                0, QStringLiteral("https://apps.kde.org/kcharselect"), QStringLiteral("org.kde.kcharselect"));
    ADD_ENTRY(QStringLiteral("org.kde.kdf"),                        0, QStringLiteral("https://apps.kde.org/kdf"), QStringLiteral("org.kde.kdf"));
    ADD_ENTRY(QStringLiteral("org.kde.kfind"),                      1, QStringLiteral("https://apps.kde.org/kfind"), QStringLiteral("org.kde.kfind.desktop")); // has good filtering options
    ADD_ENTRY(QStringLiteral("org.kde.partitionmanager"),           0, QStringLiteral("https://apps.kde.org/partitionmanager"), QStringLiteral("org.kde.partitionmanager.desktop"));
    ADD_ENTRY(QStringLiteral("org.kde.plasma.cuttlefish.kmt-edition"), 0, QStringLiteral("https://vizzzion.org/blog/2015/02/say-hi-to-cuttlefish/"), QStringLiteral("org.kde.plasma.cuttlefish"));
    ADD_ENTRY(QStringLiteral("org.kde.ksysguard"),                  0, QStringLiteral("https://apps.kde.org/ksysguard"), QStringLiteral("org.kde.ksysguard"));
    ADD_ENTRY(QStringLiteral("org.kde.ksystemlog"),                 0, QStringLiteral("https://apps.kde.org/ksystemlog"), QStringLiteral("org.kde.ksystemlog"));
    ADD_ENTRY(QStringLiteral("org.kde.ktimer"),                     0, QStringLiteral("https://apps.kde.org/ktimer"), QStringLiteral("org.kde.ktimer"));
    ADD_ENTRY(QStringLiteral("org.kde.spectacle"),                  0, QStringLiteral("https://apps.kde.org/spectacle"), QStringLiteral("org.kde.spectacle.desktop"));
    ADD_ENTRY(QStringLiteral("simplescreenrecorder"),               0, QStringLiteral("https://www.maartenbaert.be/simplescreenrecorder"), QStringLiteral("simplescreenrecorder.desktop"));
    ADD_ENTRY(QStringLiteral("com.obsproject.Studio"),              0, QStringLiteral("https://obsproject.com"), QStringLiteral("com.obsproject.Studio"));
    ADD_ENTRY(QStringLiteral("vokoscreenNG"),                       0, QStringLiteral("https://github.com/vkohaupt/vokoscreenNG"), KMoreToolsNamespace::OSDetection::is_LinuxOSFamily_Debian() ? QLatin1String("de.volkoh.linuxecke.vokoscreen_ng") : QStringLiteral("com.github.vkohaupt.vokoscreenNG")); // feature-rich screen recorder
    ADD_ENTRY(QStringLiteral("xfce4-taskmanager"),                  0, QStringLiteral("https://goodies.xfce.org/projects/applications/xfce4-taskmanager"), QStringLiteral("xfce4-taskmanager.desktop"));
    //
    // ...definitions end
    //

#undef ADD_ENTRY
    // clang-format on

    auto iter = dict.constFind(desktopEntryName);
    if (iter != dict.constEnd()) {
        auto kmtServiceInfo = *iter;
        const QString subdir = QStringLiteral("presets-kmoretools");
        auto serviceLocatingMode = desktopEntryName.endsWith(QLatin1String(".kmt-edition")) ? KMoreTools::ServiceLocatingMode_ByProvidedExecLine
                                                                                            : KMoreTools::ServiceLocatingMode_Default;
        auto service = kmt->registerServiceByDesktopEntryName(desktopEntryName, subdir, serviceLocatingMode);
        if (service) { // We might get nullptr in case of missing or broken .desktop files
            service->setHomepageUrl(QUrl(kmtServiceInfo.homepageUrl));
            service->setMaxUrlArgCount(kmtServiceInfo.maxUrlArgCount);
            service->setAppstreamId(kmtServiceInfo.appstreamId);
        }
        return service;
    } else {
        qCDebug(KMORETOOLS) << "KMoreToolsPresets::registerServiceByDesktopEntryName: " << desktopEntryName << "was not found. Return nullptr.";
        return nullptr;
    }
}

QList<KMoreToolsService *> KMoreToolsPresets::registerServicesByGroupingNames(KMoreTools *kmt, const QStringList &groupingNames)
{
    QString firstMoreSectionDesktopEntryName;
    return KMoreToolsPresetsPrivate::registerServicesByGroupingNames(&firstMoreSectionDesktopEntryName, kmt, groupingNames);
}

QList<KMoreToolsService *>
KMoreToolsPresetsPrivate::registerServicesByGroupingNames(QString *firstMoreSectionDesktopEntryName, KMoreTools *kmt, const QStringList &groupingNames)
{
    static QHash<QString, QList<QString>> dict;

    // The corresponding desktop files are located here:
    // 'knewstuff/data/kmoretools-desktopfiles/'

    // Use KMoreToolsTest2::testDialogForGroupingNames to see if the settings
    // here are correct.

    // NOTE that the desktopentry names must be registered in
    // registerServiceByDesktopEntryName above.

    // For special handlings about naming in the menu etc. see kmoretoolsmenufactory.cpp/addItemsForGroupingNameWithSpecialHandling

    //
    // grouping definitions begin (sorted alphabetically):
    //
    // clang-format off
    dict.insert(_("disk-usage"), { _("org.kde.kdf"), _("org.kde.filelight") });
    dict.insert(_("disk-partitions"), { _("gparted"), _("org.kde.partitionmanager"), _("disk") });
    dict.insert(_("files-find"), { _("org.kde.kfind"), _("fsearch"), _("more:"), _("gnome-search-tool"), _("catfish"), _("angrysearch") });
    dict.insert(_("font-tools"), { _("fontinst"), _("gucharmap"), _("more:"), _("org.kde.kcharselect"), _("fontmatrix") });
    dict.insert(_("git-clients-for-folder"), { _("git-cola-folder-handler"), _("gitk.kmt-edition"),
                _("giggle"), _("qgit.kmt-edition"), _("gitg") });
    dict.insert(_("git-clients-and-actions"), { _("git-cola-folder-handler"), _("git-cola-view-history.kmt-edition"),
                _("giggle"), _("gitk.kmt-edition"), _("qgit.kmt-edition"), _("gitg") });
    dict.insert(_("icon-browser"), { _("org.kde.plasma.cuttlefish.kmt-edition") });
    dict.insert(_("language-dictionary"), { _("ding"), _("kding") });
    dict.insert(_("mouse-tools"), { _("org.kde.kmousetool") }); // todo: add program "xbanish" to remove mouse cursor while typing
    dict.insert(_("screenrecorder"), { _("com.uploadedlobster.peek"), _("simplescreenrecorder"), _("vokoscreenNG"), _("com.obsproject.Studio") });
    dict.insert(_("screenshot-take"), { _("org.kde.spectacle"), _("shutter"), _("kaption"), _("hotshots") });
    dict.insert(_("system-monitor-processes"), { _("org.kde.ksysguard"), _("more:"), _("htop"), _("xfce4-taskmanager") });
    dict.insert(_("system-monitor-logs"), { _("org.kde.ksystemlog") });
    dict.insert(_("time-countdown"), { _("org.gnome.clocks"), _("org.kde.ktimer") });
    //
    // ...grouping definitions end
    //
    // clang-format on

    QList<KMoreToolsService *> resultList;
    QSet<QString> alreadyUsedDesktopEntryNames; // including the "more:" keyword
    bool nextIsMore = false;

    for (const QString &groupingName : groupingNames) {
        auto iter = dict.constFind(groupingName);
        if (iter != dict.constEnd()) {
            for (const QString &desktopEntryName : std::as_const(*iter)) {
                if (!alreadyUsedDesktopEntryNames.contains(desktopEntryName)) {
                    if (desktopEntryName == _("more:")) {
                        nextIsMore = true;
                    } else {
                        if (nextIsMore) { // this will be only set once
                            *firstMoreSectionDesktopEntryName = desktopEntryName;
                            nextIsMore = false;
                        }
                        KMoreToolsService *kmtService = KMoreToolsPresets::registerServiceByDesktopEntryName(kmt, desktopEntryName);
                        if (kmtService) { // Do not add null pointers caused by missing or broken .desktop files
                            resultList << kmtService;
                        }
                    }
                } else {
                    alreadyUsedDesktopEntryNames.insert(desktopEntryName);
                }
            }
        } else {
            qCWarning(KMORETOOLS) << "KMoreToolsPresets::registerServicesByGroupingName: groupingName not found: " << groupingName;
        }
    }

    if (resultList.isEmpty()) {
        qCWarning(KMORETOOLS) << "KMoreToolsPresets::registerServicesByGroupingName: " << groupingNames
                              << ". Nothing found in this groupings. HINT: check for invalid grouping names.";
    }

    return resultList;
}