// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#include "coreplugin.h"

#include "actionmanager/actionmanager.h"
#include "actionmanager/actionmanager_test.h"
#include "coreconstants.h"
#include "coreplugintr.h"
#include "customlanguagemodels.h"
#include "designmode.h"
#include "dialogs/ioptionspage.h"
#include "documentmanager.h"
#include "documentmanager_test.h"
#include "editmode.h"
#include "editormanager/editormanager_p.h"
#include "externaltool_test.h"
#include "fileutils.h"
#include "find/findplugin.h"
#include "foldernavigationwidget.h"
#include "icore.h"
#include "idocument.h"
#include "iwizardfactory.h"
#include "locator/locator.h"
#include "locator/locator_test.h"
#include "loggingviewer.h"
#include "mcp/mcpmanager.h"
#include "modemanager.h"
#include "session.h"
#include "systemsettings.h"
#include "themechooser.h"
#include "vcsmanager.h"

#include <extensionsystem/iplugin.h>
#include <extensionsystem/pluginmanager.h>

#include <utils/algorithm.h>
#include <utils/checkablemessagebox.h>
#include <utils/commandline.h>
#include <utils/crashreporting.h>
#include <utils/datafromprocess.h>
#include <utils/environment.h>
#include <utils/fileutils.h>
#include <utils/infobar.h>
#include <utils/layoutbuilder.h>
#include <utils/macroexpander.h>
#include <utils/mimeutils.h>
#include <utils/networkaccessmanager.h>
#include <utils/outputformatter.h>
#include <utils/passworddialog.h>
#include <utils/pathchooser.h>
#include <utils/savefile.h>
#include <utils/settingsdatabase.h>
#include <utils/store.h>
#include <utils/stringutils.h>
#include <utils/terminalcommand.h>
#include <utils/textutils.h>
#include <utils/theme/theme.h>
#include <utils/theme/theme_p.h>

#include <QAuthenticator>
#include <QCheckBox>
#include <QDialog>
#include <QDateTime>
#include <QDebug>
#include <QDialogButtonBox>
#include <QDir>
#include <QGuiApplication>
#include <QJsonObject>
#include <QLabel>
#include <QMenu>
#include <QMessageBox>
#include <QMetaEnum>
#include <QPushButton>
#include <QStandardPaths>
#include <QUuid>

#include <cstdlib>

using namespace Utils;

namespace Core::Internal {

static CorePlugin *m_instance = nullptr;

class CorePlugin final : public ExtensionSystem::IPlugin
{
    Q_OBJECT
    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QtCreatorPlugin" FILE "Core.json")

public:
    CorePlugin();
    ~CorePlugin() final;

    Utils::Result<> initialize(const QStringList &arguments) final;
    void extensionsInitialized() final;
    bool delayedInitialize() final;
    ShutdownFlag aboutToShutdown() final;
    QObject *remoteCommand(const QStringList & /* options */,
                           const QString &workingDirectory,
                           const QStringList &args) final;

public slots:
    void fileOpenRequest(const QString &);

private:
    void checkSettings();

    ICore *m_core = nullptr;
    EditMode *m_editMode = nullptr;
    Locator *m_locator = nullptr;
    FolderNavigationWidgetFactory *m_folderNavigationWidgetFactory = nullptr;
};

class ShowWidgetWithoutParentFilter : public QObject
{
public:
    using QObject::QObject;
    bool eventFilter(QObject *watched, QEvent *event) override
    {
        if (event->type() == QEvent::Show) {
            if (QWidget *widget = qobject_cast<QWidget *>(watched)) {
                QTC_ASSERT(
                    widget->parentWidget() || widget->windowFlags().testFlag(Qt::ToolTip),
                    dumpBacktrace(30));
            }
        }
        return QObject::eventFilter(watched, event);
    }
};

CorePlugin::CorePlugin()
{
    QObject::connect(qApp, SIGNAL(fileOpenRequest(QString)), this, SLOT(fileOpenRequest(QString)));

    // Trigger creation as early as possible before anyone else could
    // mess with the systemEnvironment before it is "backed up".
    (void) systemSettings();

    qRegisterMetaType<Id>();
    qRegisterMetaType<Text::Position>();
    qRegisterMetaType<CommandLine>();
    qRegisterMetaType<FilePath>();
    qRegisterMetaType<Environment>();
    qRegisterMetaType<Store>();
    qRegisterMetaType<Key>();
    qRegisterMetaType<KeyList>();
    qRegisterMetaType<OldStore>();
    m_instance = this;

    if (Environment::systemEnvironment().hasKey("QTC_DEBUG_SHOW_WIDGET_WITHOUT_PARENT"))
        qApp->installEventFilter(new ShowWidgetWithoutParentFilter(this));
}

CorePlugin::~CorePlugin()
{
    IWizardFactory::destroyFeatureProvider();
    Find::destroy();

    delete m_locator;
    delete m_folderNavigationWidgetFactory;
    delete m_editMode;
    DesignMode::destroyModeIfRequired();

    delete m_core;
    SettingsDatabase::destroy();
    setCreatorTheme(nullptr);
}

struct CoreArguments {
    QColor overrideColor;
    Id themeId;
    bool presentationMode = false;
};

static CoreArguments parseArguments(const QStringList &arguments)
{
    CoreArguments args;
    for (int i = 0; i < arguments.size(); ++i) {
        if (arguments.at(i) == QLatin1String("-color")) {
            const QString colorcode(arguments.at(i + 1));
            args.overrideColor = QColor(colorcode);
            i++; // skip the argument
        }
        if (arguments.at(i) == QLatin1String("-presentationMode"))
            args.presentationMode = true;
        if (arguments.at(i) == QLatin1String("-theme")) {
            args.themeId = Id::fromString(arguments.at(i + 1));
            i++; // skip the argument
        }
    }
    return args;
}

static void initProxyAuthDialog()
{
    QObject::connect(NetworkAccessManager::instance(),
                     &QNetworkAccessManager::proxyAuthenticationRequired,
                     NetworkAccessManager::instance(),
                     [](const QNetworkProxy &, QAuthenticator *authenticator) {
                         static bool doNotAskAgain = false;

                         std::optional<QPair<QString, QString>> answer
                             = PasswordDialog::getUserAndPassword(
                                 Tr::tr("Proxy Authentication Required"),
                                 authenticator->realm(),
                                 Tr::tr("Do not ask again."),
                                 {},
                                 &doNotAskAgain);

                         if (answer) {
                             authenticator->setUser(answer->first);
                             authenticator->setPassword(answer->second);
                         }
                     });
}

static void addToPathChooserContextMenu(PathChooser *pathChooser, QMenu *menu)
{
    QList<QAction *> actions = menu->actions();
    QAction *firstAction = actions.isEmpty() ? nullptr : actions.first();

    const auto copyExpanded = new QAction(Tr::tr("Copy Expanded Value"), menu);
    QObject::connect(copyExpanded, &QAction::triggered, pathChooser, [pathChooser] {
        Utils::setClipboardAndSelection(pathChooser->filePath().toUserOutput());
    });
    menu->insertAction(firstAction, copyExpanded);

    if (pathChooser->filePath().exists()) {
        auto showInGraphicalShell = new QAction(FileUtils::msgGraphicalShellAction(), menu);
        QObject::connect(showInGraphicalShell, &QAction::triggered, pathChooser, [pathChooser] {
            Core::FileUtils::showInGraphicalShell(pathChooser->filePath());
        });
        menu->insertAction(copyExpanded, showInGraphicalShell);

        auto showInTerminal = new QAction(FileUtils::msgTerminalHereAction(), menu);
        QObject::connect(showInTerminal, &QAction::triggered, pathChooser, [pathChooser] {
            if (pathChooser->openTerminalHandler())
                pathChooser->openTerminalHandler()();
            else
                FileUtils::openTerminal(pathChooser->filePath(), {});
        });
        menu->insertAction(copyExpanded, showInTerminal);

    } else {
        auto mkPathAct = new QAction(Tr::tr("Create Folder"), menu);
        QObject::connect(mkPathAct, &QAction::triggered, pathChooser, [pathChooser] {
            pathChooser->filePath().ensureWritableDir();
            pathChooser->triggerChanged();
        });
        menu->insertAction(firstAction, mkPathAct);
    }

    if (firstAction)
        menu->insertSeparator(firstAction);
}

static void registerStandardLocation(MacroExpander *expander,
                                                 QStandardPaths::StandardLocation location)
{
    static const QMetaEnum metaEnum = QMetaEnum::fromType<QStandardPaths::StandardLocation>();
    const QLatin1String key(metaEnum.valueToKey(location));
    expander->registerFileVariables(
        QByteArray("HostOs:") + key.latin1(),
        Tr::tr("QStandardPaths::%1 location on the local filesystem.").arg(key),
        [location] {
            const QStringList locations =
                QStandardPaths::standardLocations(location);
            return locations.isEmpty() ? FilePath()
                                       : FilePath::fromUserInput(locations.first());
        });
}

static void warnAboutCrashReporting(InfoBar *infoBar)
{
    static const char kCrashReportingInfoBarEntry[] = "WarnCrashReporting";

    if (!isCrashReportingAvailable())
        return;
    if (!infoBar->canInfoBeAdded(kCrashReportingInfoBarEntry))
        return;
    if (systemSettings().enableCrashReports())
        return;

    Utils::InfoBarEntry info(
        kCrashReportingInfoBarEntry,
        Tr::tr("%1 can collect crash reports for the sole purpose of fixing bugs.")
            .arg(QGuiApplication::applicationDisplayName()),
        Utils::InfoBarEntry::GlobalSuppression::Enabled);
    info.setTitle(Tr::tr("Crash Reporting"));
    info.setInfoType(InfoLabelType::Information);
    info.addCustomButton(Tr::tr("Enable Crash Reporting..."), [infoBar] {
        infoBar->removeInfo(kCrashReportingInfoBarEntry);
        auto dialog = new QDialog(ICore::dialogParent());
        dialog->setAttribute(Qt::WA_DeleteOnClose);
        dialog->setWindowTitle(Tr::tr("Enable Crash Reporting"));
        ICore::registerWindow(dialog, Context("Core.EnableCrashReportingDialog"));
        auto infoLabel = new QLabel(Utils::breakpadInformation());
        infoLabel->setWordWrap(true);
        infoLabel->setOpenExternalLinks(true);
        const QString preferencesText = HostOsInfo::isMacHost()
                                            ? Tr::tr("%1 > Preferences > Environment > System")
                                                  .arg(QGuiApplication::applicationDisplayName())
                                            : Tr::tr("Edit > Preferences > Environment > System");
        auto preferencesLabel = new QLabel(
            Tr::tr("Change this later in %1.")
                .arg("<a href=\"settings\">" + preferencesText + "</a>"));
        preferencesLabel->setOpenExternalLinks(false);
        QObject::connect(preferencesLabel, &QLabel::linkActivated, dialog, [dialog] {
            dialog->reject();
            ICore::showSettings(Constants::SETTINGS_ID_SYSTEM);
        });
        auto buttonBox = new QDialogButtonBox;
        buttonBox->addButton(Tr::tr("Cancel"), QDialogButtonBox::RejectRole);
        buttonBox->addButton(Tr::tr("Enable Crash Reporting"), QDialogButtonBox::AcceptRole);
        QObject::connect(buttonBox, &QDialogButtonBox::accepted, dialog, &QDialog::accept);
        QObject::connect(buttonBox, &QDialogButtonBox::rejected, dialog, &QDialog::reject);
        QObject::connect(dialog, &QDialog::accepted, [] {
            systemSettings().enableCrashReports.setValue(true);
            systemSettings().writeSettings();
        });
        using namespace Layouting;
        Column{infoLabel, preferencesLabel, buttonBox}.attachTo(dialog);
        dialog->show();
    });

    infoBar->addInfo(info);
}

Result<> CorePlugin::initialize(const QStringList &arguments)
{
    initProxyAuthDialog();

    if (ThemeEntry::availableThemes().isEmpty())
        return ResultError(Tr::tr("No themes found in installation."));

    const CoreArguments args = parseArguments(arguments);
    Theme *themeFromArg = ThemeEntry::createTheme(args.themeId);
    Theme *theme = themeFromArg ? themeFromArg
                                : ThemeEntry::createTheme(ThemeEntry::themeSetting());
    Theme::setInitialPalette(theme); // Initialize palette before setting it
    setCreatorTheme(theme);
    InfoBar::initialize(ICore::settings());
    CheckableMessageBox::initialize(ICore::settings());
    new ActionManager(this);
    ActionManager::setPresentationModeEnabled(args.presentationMode);
    if (args.overrideColor.isValid())
        ICore::setOverrideColor(args.overrideColor);
    m_core = new ICore;
    m_locator = new Locator;
    std::srand(unsigned(QDateTime::currentDateTime().toSecsSinceEpoch()));
    m_editMode = new EditMode;
    ModeManager::activateMode(m_editMode->id());
    m_folderNavigationWidgetFactory = new FolderNavigationWidgetFactory;

    IOptionsPage::registerCategory(
        Constants::SETTINGS_CATEGORY_CORE,
        Tr::tr("Environment"),
        ":/core/images/settingscategory_core.png");
    IOptionsPage::registerCategory(
        Constants::SETTINGS_CATEGORY_AI,
        Tr::tr("AI"),
        ":/core/images/settingscategory_ai.png");

    // Shared by Help and ScreenRecorder
    IOptionsPage::registerCategory(
        Constants::HELP_CATEGORY, Tr::tr("Help"), ":/core/images/settingscategory_help.png");

    setupMcpManager();
    setupCustomLanguageModels();

    IWizardFactory::initialize();

    // Make sure we respect the process's umask when creating new files
    SaveFile::initializeUmask();

    Find::initialize();
    m_locator->initialize();

    MacroExpander *expander = Utils::globalMacroExpander();
    expander->registerVariable("CurrentDate:ISO", Tr::tr("The current date (ISO)."),
                               [] { return QDate::currentDate().toString(Qt::ISODate); });
    expander->registerVariable("CurrentTime:ISO", Tr::tr("The current time (ISO)."),
                               [] { return QTime::currentTime().toString(Qt::ISODate); });
    expander->registerVariable("CurrentDate:RFC", Tr::tr("The current date (RFC2822)."),
                               [] { return QDate::currentDate().toString(Qt::RFC2822Date); });
    expander->registerVariable("CurrentTime:RFC", Tr::tr("The current time (RFC2822)."),
                               [] { return QTime::currentTime().toString(Qt::RFC2822Date); });
    expander->registerVariable("CurrentDate:Locale", Tr::tr("The current date (Locale)."),
                               [] { return QLocale::system()
                                        .toString(QDate::currentDate(), QLocale::ShortFormat); });
    expander->registerVariable("CurrentTime:Locale", Tr::tr("The current time (Locale)."),
                               [] { return QLocale::system()
                                        .toString(QTime::currentTime(), QLocale::ShortFormat); });
    expander->registerVariable("Config:DefaultProjectDirectory", Tr::tr("The configured default directory for projects."),
                               [] { return DocumentManager::projectsDirectory().toUrlishString(); });
    expander->registerFileVariables("Config:DefaultProjectDirectory", Tr::tr("The configured default directory for projects."),
                               [] { return DocumentManager::projectsDirectory(); });
    expander->registerVariable("Config:LastFileDialogDirectory", Tr::tr("The directory last visited in a file dialog."),
                               [] { return DocumentManager::fileDialogLastVisitedDirectory().toUrlishString(); });
    expander->registerFileVariables("Config:LastFileDialogDirectory", Tr::tr("The directory last visited in a file dialog."),
                               [] { return DocumentManager::fileDialogLastVisitedDirectory(); });
    expander->registerVariable("HostOs:isWindows",
                               Tr::tr("Is %1 running on Windows?")
                                   .arg(QGuiApplication::applicationDisplayName()),
                               [] {
                                   return QVariant(Utils::HostOsInfo::isWindowsHost()).toString();
                               });
    expander->registerVariable("HostOs:isOSX",
                               Tr::tr("Is %1 running on OS X?")
                                   .arg(QGuiApplication::applicationDisplayName()),
                               [] { return QVariant(Utils::HostOsInfo::isMacHost()).toString(); });
    expander->registerVariable("HostOs:isLinux",
                               Tr::tr("Is %1 running on Linux?")
                                   .arg(QGuiApplication::applicationDisplayName()),
                               [] { return QVariant(Utils::HostOsInfo::isLinuxHost()).toString(); });
    expander->registerVariable("HostOs:isUnix",
                               Tr::tr("Is %1 running on any unix-based platform?")
                                   .arg(QGuiApplication::applicationDisplayName()),
                               [] {
                                   return QVariant(Utils::HostOsInfo::isAnyUnixHost()).toString();
                               });
    expander->registerVariable("HostOs:PathListSeparator",
                               Tr::tr("The path list separator for the platform."),
                               [] { return QString(Utils::HostOsInfo::pathListSeparator()); });
    expander->registerVariable("HostOs:ExecutableSuffix",
                               Tr::tr("The platform executable suffix."),
                               [] { return QString(Utils::HostOsInfo::withExecutableSuffix("")); });
    expander->registerVariable("HostOs:BatchFileSuffix",
                               Tr::tr(".bat on windows, empty on all other platforms."),
                               [] { return HostOsInfo::isWindowsHost() ? QStringLiteral(".bat") : QStringLiteral(""); });
    expander->registerFileVariables("IDE:Executable",
                               Tr::tr("The path to the running %1 itself.").arg(QGuiApplication::applicationDisplayName()),
                               []() { return FilePath::fromUserInput(QCoreApplication::applicationFilePath()); });
    expander->registerVariable("IDE:ResourcePath",
                               Tr::tr("The directory where %1 finds its pre-installed resources.")
                                   .arg(QGuiApplication::applicationDisplayName()),
                               [] { return ICore::resourcePath().toUrlishString(); });
    expander->registerFileVariables("IDE:ResourcePath",
                               Tr::tr("The directory where %1 finds its pre-installed resources.")
                                   .arg(QGuiApplication::applicationDisplayName()),
                               [] { return ICore::resourcePath(); });
    expander->registerVariable("IDE:UserResourcePath",
                               Tr::tr("The directory where %1 puts custom user data.")
                                   .arg(QGuiApplication::applicationDisplayName()),
                               [] { return ICore::userResourcePath().toUrlishString(); });
    expander->registerFileVariables("IDE:UserResourcePath",
                               Tr::tr("The directory where %1 puts custom user data.")
                                   .arg(QGuiApplication::applicationDisplayName()),
                               [] { return ICore::userResourcePath(); });
    expander->registerPrefix(
        "CurrentDate:",
        "dd.MM.yyyy",
        Tr::tr("The current date (QDate formatstring)."),
        [](const QString &fmt) { return QDate::currentDate().toString(fmt); });
    expander->registerPrefix(
        "CurrentTime:",
        "hh:mm:ss",
        Tr::tr("The current time (QTime formatstring)."),
        [](const QString &fmt) { return QTime::currentTime().toString(fmt); });
    expander->registerVariable("UUID", Tr::tr("Generate a new UUID."),
                               [] { return QUuid::createUuid().toString(); });

    expander->registerPrefix("#:", "<comment>", Tr::tr("A comment."), [](const QString &) {
        return QString();
    });
    expander->registerPrefix(
        "Asciify:", "éΩ", Tr::tr("Convert string to pure ASCII."), [expander](const QString &s) {
            return asciify(expander->expand(s));
        });
    expander->registerPrefix(
        "FileSystemFriendly:",
        "string with spaces",
        Tr::tr("Convert string to something that can be safely used in a file path."),
        [expander](const QString &s) {
            return Utils::FileUtils::fileSystemFriendlyName(expander->expand(s));
        });

    if (HostOsInfo::isAnyUnixHost()) { // on Windows we do not have this setting
        expander->registerFileVariables(
            "Settings:Tools:Terminal",
            Tr::tr("The terminal configured in Environment > Sytem."),
            []{ return TerminalCommand::terminalEmulator().command; });
        expander->registerVariable(
            "Settings:Tools:Terminal:RunInTerminalArgs",
            Tr::tr("The arguments passed to the terminal command to run in terminal "
                   "configured in Environment > System."),
            []{ return TerminalCommand::terminalEmulator().executeArgs; });
    }

    registerStandardLocation(expander, QStandardPaths::DocumentsLocation);
    registerStandardLocation(expander, QStandardPaths::GenericDataLocation);
    registerStandardLocation(expander, QStandardPaths::HomeLocation);
    registerStandardLocation(expander, QStandardPaths::TempLocation);

    Utils::PathChooser::setAboutToShowContextMenuHandler(&addToPathChooserContextMenu);

    if (Utils::isCrashReportingAvailable()) {
        connect(
            ICore::instance(),
            &ICore::coreOpened,
            this,
            [] {
                warnAboutCrashReporting(ICore::popupInfoBar());
            },
            Qt::QueuedConnection);
    }

#ifdef WITH_TESTS
    addTestCreator(createActionManagerTest);
    addTestCreator(createDocumentManagerTest);
    addTestCreator(createExternalToolTest);
    addTestCreator(createLocatorTest);
    addTestCreator(createVcsManagerTest);
    addTestCreator(createEditorManagerTest);
    addTestCreator(createTabbedEditorTest);
    addTestCreator(createOutputFormatterTest);
#endif

    return ResultOk;
}

static Id generateOpenPageCommandId(IOptionsPage *page)
{
    // The page and category are prioritized by their alphabetical order so usually the ids are
    // prepended by some prioritizing characters like D.ProjectExplorer.KitsOptions separated
    // by dots. Create a new actions id by joining the last parts of the page and category id
    // with an additional ".SettingsPage."
    const QStringList pageIdParts = page->id().toString().split('.');
    const QStringList categoryIdParts = page->category().toString().split('.');
    if (pageIdParts.isEmpty() || categoryIdParts.isEmpty())
        return {};

    const Id candidate = Id::fromString(
        QStringList{"Preferences", categoryIdParts.last(), pageIdParts.last()}.join('.'));
    QString suffix;
    int i = 0;
    while (ActionManager::command(candidate.withSuffix(suffix)))
        suffix = QString::number(++i);
    return candidate.withSuffix(suffix);
}

static void registerActionsForOptions()
{
    QMap<Utils::Id, QString> categoryDisplay;
    for (IOptionsPage *page : IOptionsPage::allOptionsPages()) {
        if (!categoryDisplay.contains(page->category()) && !page->displayCategory().isEmpty())
            categoryDisplay[page->category()] = page->displayCategory();
    }
    for (IOptionsPage *page : IOptionsPage::allOptionsPages()) {
        const Id commandId = generateOpenPageCommandId(page);
        if (!commandId.isValid())
            continue;

        ActionBuilder(ICore::instance(), commandId)
            .setText(Tr::tr("%1 > %2 Preferences...")
                         .arg(categoryDisplay.value(page->category()), page->displayName()))
            .addOnTriggered(ICore::instance(), [id = page->id()] {
                ICore::showSettings(id);
            });
    }
}

void CorePlugin::extensionsInitialized()
{
    DesignMode::createModeIfRequired();
    Find::extensionsInitialized();
    m_locator->extensionsInitialized();
    ICore::extensionsInitialized();
    checkSettings();
    registerActionsForOptions();
}

bool CorePlugin::delayedInitialize()
{
    systemSettings().delayedInitialize();
    m_locator->delayedInitialize();
    IWizardFactory::allWizardFactories(); // scan for all wizard factories
    return true;
}

QObject *CorePlugin::remoteCommand(const QStringList & /* options */,
                                   const QString &workingDirectory,
                                   const QStringList &args)
{
    const FilePaths filePaths = Utils::transform(args, FilePath::fromUserInput);
    IDocument *res = ICore::openFiles(
        filePaths,
        ICore::OpenFilesFlags(
            ICore::SwitchMode | ICore::CanContainLineAndColumnNumbers
            | ICore::SwitchSplitIfAlreadyVisible),
        FilePath::fromString(workingDirectory),
        /*openProjects=*/false);
    ICore::raiseMainWindow();
    return res;
}

void CorePlugin::fileOpenRequest(const QString &f)
{
    if (ExtensionSystem::PluginManager::isShuttingDown())
        return;
    remoteCommand(QStringList(), QString(), QStringList(f));
}

void CorePlugin::checkSettings()
{
    const auto showMsgBox = [this](const QString &msg, QMessageBox::Icon icon) {
        connect(ICore::instance(), &ICore::coreOpened, this, [msg, icon] {
            QMessageBox msgBox(ICore::dialogParent());
            msgBox.setWindowTitle(Tr::tr("Settings File Error"));
            msgBox.setText(msg);
            msgBox.setIcon(icon);
            msgBox.exec();
        }, Qt::QueuedConnection);
    };
    const QtcSettings * const userSettings = ICore::settings();
    QString errorDetails;
    switch (userSettings->status()) {
    case QSettings::NoError: {
        const QFileInfo fi(userSettings->fileName());
        if (fi.exists() && !fi.isWritable()) {
            const QString errorMsg = Tr::tr("The settings file \"%1\" is not writable.\n"
                                            "You will not be able to store any %2 settings.")
                                         .arg(QDir::toNativeSeparators(userSettings->fileName()),
                                              QGuiApplication::applicationDisplayName());
            showMsgBox(errorMsg, QMessageBox::Warning);
        }
        return;
    }
    case QSettings::AccessError:
        errorDetails = Tr::tr("The file is not readable.");
        break;
    case QSettings::FormatError:
        errorDetails = Tr::tr("The file is invalid.");
        break;
    }
    const QString errorMsg
        = Tr::tr("Error reading settings file \"%1\": %2\n"
                 "You will likely experience further problems using this instance of %3.")
              .arg(QDir::toNativeSeparators(userSettings->fileName()),
                   errorDetails,
                   QGuiApplication::applicationDisplayName());
    showMsgBox(errorMsg, QMessageBox::Critical);
}

ExtensionSystem::IPlugin::ShutdownFlag CorePlugin::aboutToShutdown()
{
    LoggingViewer::hideLoggingView();
    Find::aboutToShutdown();
    m_locator->aboutToShutdown();
    ICore::aboutToShutdown();
    DataFromProcessSettingsCache::writeToSettings();
    return SynchronousShutdown;
}

ExtensionSystem::IPlugin *corePlugin()
{
    return m_instance;
}

} // Core::Internal

#include "coreplugin.moc"
