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/*
 * Copyright (c) 2010-2017 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swift/QtUI/QtSwift.h>

#include <map>
#include <string>

#include <boost/bind.hpp>

#include <QApplication>
#include <QFile>
#include <QFontDatabase>
#include <QMap>
#include <QMessageBox>
#include <qdebug.h>

#include <Swiften/Base/Log.h>
#include <Swiften/Base/Path.h>
#include <Swiften/Base/Paths.h>
#include <Swiften/Base/Platform.h>
#include <Swiften/Client/Client.h>
#include <Swiften/Elements/Presence.h>
#include <Swiften/TLS/TLSContextFactory.h>

#include <SwifTools/Application/PlatformApplicationPathProvider.h>
#include <SwifTools/AutoUpdater/AutoUpdater.h>
#include <SwifTools/AutoUpdater/PlatformAutoUpdaterFactory.h>
#include <SwifTools/EmojiMapper.h>

#include <Swift/Controllers/ApplicationInfo.h>
#include <Swift/Controllers/BuildVersion.h>
#include <Swift/Controllers/MainController.h>
#include <Swift/Controllers/SettingConstants.h>
#include <Swift/Controllers/Settings/SettingsProviderHierachy.h>
#include <Swift/Controllers/Settings/XMLSettingsProvider.h>
#include <Swift/Controllers/StatusCache.h>
#include <Swift/Controllers/Storages/CertificateFileStorageFactory.h>
#include <Swift/Controllers/Storages/FileStoragesFactory.h>

#include <Swift/QtUI/QtChatTabs.h>
#include <Swift/QtUI/QtChatTabsBase.h>
#include <Swift/QtUI/QtChatTabsShortcutOnlySubstitute.h>
#include <Swift/QtUI/QtChatWindowFactory.h>
#include <Swift/QtUI/QtLoginWindow.h>
#include <Swift/QtUI/QtSingleWindow.h>
#include <Swift/QtUI/QtSoundPlayer.h>
#include <Swift/QtUI/QtSwiftUtil.h>
#include <Swift/QtUI/QtSystemTray.h>
#include <Swift/QtUI/QtUIFactory.h>
#include <Swift/QtUI/QtUISettingConstants.h>
#include <Swift/QtUI/SwiftUpdateFeeds.h>

#if defined(SWIFTEN_PLATFORM_WINDOWS)
#include <Swift/QtUI/WindowsNotifier.h>
#elif defined(HAVE_GROWL)
#include <SwifTools/Notifier/GrowlNotifier.h>
#elif defined(SWIFTEN_PLATFORM_LINUX)
#include <Swift/QtUI/FreeDesktopNotifier.h>
#elif defined(SWIFTEN_PLATFORM_MACOSX)
#include <SwifTools/Notifier/NotificationCenterNotifier.h>
#else
#include <SwifTools/Notifier/NullNotifier.h>
#endif

#if defined(SWIFTEN_PLATFORM_MACOSX)
#include <SwifTools/Dock/MacOSXDock.h>
#else
#include <SwifTools/Dock/NullDock.h>
#endif

#if defined(SWIFTEN_PLATFORM_MACOSX)
#include <Swift/QtUI/QtURIHandler.h>
#elif defined(SWIFTEN_PLATFORM_WIN32)
#include <SwifTools/URIHandler/NullURIHandler.h>
#else
#include <Swift/QtUI/QtDBUSURIHandler.h>
#endif

#if defined(SWIFTEN_PLATFORM_MACOSX)
#include <Swift/QtUI/CocoaUIHelpers.h>
#endif

namespace Swift{

po::options_description QtSwift::getOptionsDescription() {
    po::options_description result("Options");
    result.add_options()
        ("debug", "Turn on debug logging")
        ("help", "Show this help message")
        ("version", "Show version information")
        ("netbook-mode", "Use netbook mode display (unsupported)")
        ("no-tabs", "Don't manage chat windows in tabs (unsupported)")
        ("latency-debug", "Use latency debugging (unsupported)")
        ("multi-account", po::value<int>()->default_value(1), "Number of accounts to open windows for (unsupported)")
        ("start-minimized", "Don't show the login/roster window at startup")
        ("enable-jid-adhocs", "Enable AdHoc commands to custom JID's.")
#if QT_VERSION >= 0x040800
        ("language", po::value<std::string>(), "Use a specific language, instead of the system-wide one")
#endif
        ("logfile", po::value<std::string>()->implicit_value(""), "Save all logging information to a file")
        ;
    return result;
}

XMLSettingsProvider* QtSwift::loadSettingsFile(const QString& fileName) {
    QFile configFile(fileName);
    if (configFile.exists() && configFile.open(QIODevice::ReadOnly)) {
        QString xmlString;
        while (!configFile.atEnd()) {
            QByteArray line = configFile.readLine();
            xmlString += line + "\n";
        }
        return new XMLSettingsProvider(Q2PSTRING(xmlString));
    }
    return new XMLSettingsProvider("");
}

void QtSwift::loadEmoticonsFile(const QString& fileName, std::map<std::string, std::string>& emoticons)  {
    QFile file(fileName);
    if (file.exists() && file.open(QIODevice::ReadOnly)) {
        while (!file.atEnd()) {
            QString line = file.readLine();
            line.replace("\n", "");
            line.replace("\r", "");
            QStringList tokens = line.split(" ");
            if (tokens.size() == 2) {
                QString emoticonFile = tokens[1];
                if (!emoticonFile.startsWith(":/") && !emoticonFile.startsWith("qrc:/")) {
                    emoticonFile = "file://" + emoticonFile;
                }
                emoticons[Q2PSTRING(tokens[0])] = Q2PSTRING(emoticonFile);
            }
        }
    }
}

const std::string& QtSwift::updateChannelToFeed(const std::string& channel) {
    static const std::string invalidChannel;
    if (channel == UpdateFeeds::StableChannel) {
        return UpdateFeeds::StableAppcastFeed;
    }
    else if (channel == UpdateFeeds::TestingChannel) {
        return UpdateFeeds::TestingAppcastFeed;
    }
    else if (channel == UpdateFeeds::DevelopmentChannel) {
        return UpdateFeeds::DevelopmentAppcastFeed;
    }
    else {
        return invalidChannel;
    }
}

QtSwift::QtSwift(const po::variables_map& options) : networkFactories_(&clientMainThreadCaller_), autoUpdater_(nullptr), idleDetector_(&idleQuerier_, networkFactories_.getTimerFactory(), 1000) {
    QCoreApplication::setApplicationName(SWIFT_APPLICATION_NAME);
    QCoreApplication::setOrganizationName(SWIFT_ORGANIZATION_NAME);
    QCoreApplication::setOrganizationDomain(SWIFT_ORGANIZATION_DOMAIN);
    QCoreApplication::setApplicationVersion(buildVersion);

    qtSettings_ = new QtSettingsProvider();
    xmlSettings_ = loadSettingsFile(P2QSTRING(pathToString(Paths::getExecutablePath() / "system-settings.xml")));
    settingsHierachy_ = new SettingsProviderHierachy();
    settingsHierachy_->addProviderToTopOfStack(xmlSettings_);
    settingsHierachy_->addProviderToTopOfStack(qtSettings_);

    networkFactories_.getTLSContextFactory()->setDisconnectOnCardRemoval(settingsHierachy_->getSetting(SettingConstants::DISCONNECT_ON_CARD_REMOVAL));

    std::map<std::string, std::string> emoticons;
    loadEmoticonsFile(":/emoticons/emoticons.txt", emoticons);
    loadEmoticonsFile(P2QSTRING(pathToString(Paths::getExecutablePath() / "emoticons.txt")), emoticons);

    if (options.count("netbook-mode")) {
        splitter_ = new QtSingleWindow(qtSettings_);
    } else {
        splitter_ = nullptr;
    }

    int numberOfAccounts = 1;
    try {
        numberOfAccounts = options["multi-account"].as<int>();
    } catch (...) {
        /* This seems to fail on a Mac when the .app is launched directly (the usual path).*/
        numberOfAccounts = 1;
    }

    if (options.count("debug")) {
        Log::setLogLevel(Swift::Log::debug);
    }

    if (options.count("logfile")) {
        try {
            std::string fileName = options["logfile"].as<std::string>();
            Log::setLogFile(fileName);
        }
        catch (...) {
            SWIFT_LOG(error) << "Error while retrieving the specified log file name from the command line" << std::endl;
        }
    }

    // Load fonts
    std::vector<std::string> fontNames = {
        "themes/Default/Lato2OFL/Lato-Black.ttf",
        "themes/Default/Lato2OFL/Lato-BlackItalic.ttf",
        "themes/Default/Lato2OFL/Lato-Bold.ttf",
        "themes/Default/Lato2OFL/Lato-BoldItalic.ttf",
        "themes/Default/Lato2OFL/Lato-Hairline.ttf",
        "themes/Default/Lato2OFL/Lato-HairlineItalic.ttf",
        "themes/Default/Lato2OFL/Lato-Heavy.ttf",
        "themes/Default/Lato2OFL/Lato-HeavyItalic.ttf",
        "themes/Default/Lato2OFL/Lato-Italic.ttf",
        "themes/Default/Lato2OFL/Lato-Light.ttf",
        "themes/Default/Lato2OFL/Lato-LightItalic.ttf",
        "themes/Default/Lato2OFL/Lato-Medium.ttf",
        "themes/Default/Lato2OFL/Lato-MediumItalic.ttf",
        "themes/Default/Lato2OFL/Lato-Regular.ttf",
        "themes/Default/Lato2OFL/Lato-Semibold.ttf",
        "themes/Default/Lato2OFL/Lato-SemiboldItalic.ttf",
        "themes/Default/Lato2OFL/Lato-Thin.ttf",
        "themes/Default/Lato2OFL/Lato-ThinItalic.ttf"
    };

    for (auto&& fontName : fontNames) {
        std::string fontPath = std::string(":/") + fontName;
        int error = QFontDatabase::addApplicationFont(P2QSTRING(fontPath));
        SWIFT_LOG_ASSERT(error != -1, error) << "Failed to load font " << fontPath << std::endl;
    }

    bool enableAdHocCommandOnJID = options.count("enable-jid-adhocs") > 0;
    tabs_ = nullptr;
    if (options.count("no-tabs") && !splitter_) {
        tabs_ = new QtChatTabsShortcutOnlySubstitute();
    }
    else {
        tabs_ = new QtChatTabs(splitter_ != nullptr, settingsHierachy_, true);
    }
    bool startMinimized = options.count("start-minimized") > 0;
    applicationPathProvider_ = new PlatformApplicationPathProvider(SWIFT_APPLICATION_NAME);
    storagesFactory_ = new FileStoragesFactory(applicationPathProvider_->getDataDir(), networkFactories_.getCryptoProvider());
    certificateStorageFactory_ = new CertificateFileStorageFactory(applicationPathProvider_->getDataDir(), tlsFactories_.getCertificateFactory(), networkFactories_.getCryptoProvider());
    chatWindowFactory_ = new QtChatWindowFactory(splitter_, settingsHierachy_, qtSettings_, tabs_, ":/themes/Default/", emoticons);
    soundPlayer_ = new QtSoundPlayer(applicationPathProvider_);

    // Ugly, because the dock depends on the tray, but the temporary
    // multi-account hack creates one tray per account.
    QtSystemTray* systemTray = new QtSystemTray();
    systemTrays_.push_back(systemTray);

#if defined(HAVE_GROWL)
    notifier_ = new GrowlNotifier(SWIFT_APPLICATION_NAME);
#elif defined(SWIFTEN_PLATFORM_WINDOWS)
    notifier_ = new WindowsNotifier(SWIFT_APPLICATION_NAME, applicationPathProvider_->getResourcePath("/images/logo-icon-32.png"), systemTray->getQSystemTrayIcon());
#elif defined(SWIFTEN_PLATFORM_LINUX)
    notifier_ = new FreeDesktopNotifier(SWIFT_APPLICATION_NAME);
#elif defined(SWIFTEN_PLATFORM_MACOSX)
    notifier_ = new NotificationCenterNotifier();
#else
    notifier_ = new NullNotifier();
#endif

#if defined(SWIFTEN_PLATFORM_MACOSX)
    dock_ = new MacOSXDock(&cocoaApplication_);
#else
    dock_ = new NullDock();
#endif

#if defined(SWIFTEN_PLATFORM_MACOSX)
    uriHandler_ = new QtURIHandler();
#elif defined(SWIFTEN_PLATFORM_WIN32)
    uriHandler_ = new NullURIHandler();
#else
    uriHandler_ = new QtDBUSURIHandler();
#endif

    statusCache_ = new StatusCache(applicationPathProvider_);

    if (splitter_) {
        splitter_->show();
    }

    PlatformAutoUpdaterFactory autoUpdaterFactory;
    if (autoUpdaterFactory.isSupported() && settingsHierachy_->getSetting(QtUISettingConstants::ENABLE_SOFTWARE_UPDATES)
        && !settingsHierachy_->getSetting(QtUISettingConstants::SOFTWARE_UPDATE_CHANNEL).empty()) {
        autoUpdater_ = autoUpdaterFactory.createAutoUpdater(updateChannelToFeed(settingsHierachy_->getSetting(QtUISettingConstants::SOFTWARE_UPDATE_CHANNEL)));
        autoUpdater_->checkForUpdates();
        autoUpdater_->onUpdateStateChanged.connect(boost::bind(&QtSwift::handleAutoUpdaterStateChanged, this, _1));

        settingsHierachy_->onSettingChanged.connect([&](const std::string& path) {
            if (path == QtUISettingConstants::SOFTWARE_UPDATE_CHANNEL.getKey()) {
                autoUpdater_->setAppcastFeed(updateChannelToFeed(settingsHierachy_->getSetting(QtUISettingConstants::SOFTWARE_UPDATE_CHANNEL)));
                autoUpdater_->checkForUpdates();
            }
        });
    }

    for (int i = 0; i < numberOfAccounts; i++) {
        if (i > 0) {
            // Don't add the first tray (see note above)
            systemTrays_.push_back(new QtSystemTray());
        }
        QtUIFactory* uiFactory = new QtUIFactory(settingsHierachy_, qtSettings_, tabs_, splitter_, systemTrays_[i], chatWindowFactory_, networkFactories_.getTimerFactory(), statusCache_, autoUpdater_, startMinimized, !emoticons.empty(), enableAdHocCommandOnJID);
        uiFactories_.push_back(uiFactory);
        MainController* mainController = new MainController(
                &clientMainThreadCaller_,
                &networkFactories_,
                uiFactory,
                settingsHierachy_,
                systemTrays_[i],
                soundPlayer_,
                storagesFactory_,
                certificateStorageFactory_,
                dock_,
                notifier_,
                uriHandler_,
                &idleDetector_,
                emoticons,
                options.count("latency-debug") > 0);
        mainControllers_.push_back(mainController);
    }

    connect(qApp, SIGNAL(aboutToQuit()), this, SLOT(handleAboutToQuit()));
}

QtSwift::~QtSwift() {
    delete autoUpdater_;
    for (auto* factory : uiFactories_) {
        delete factory;
    }
    for (auto* controller : mainControllers_) {
        delete controller;
    }
    delete notifier_;
    for (auto* tray : systemTrays_) {
        delete tray;
    }
    delete tabs_;
    delete chatWindowFactory_;
    delete splitter_;
    delete settingsHierachy_;
    delete qtSettings_;
    delete xmlSettings_;
    delete statusCache_;
    delete uriHandler_;
    delete dock_;
    delete soundPlayer_;
    delete certificateStorageFactory_;
    delete storagesFactory_;
    delete applicationPathProvider_;
}

void QtSwift::handleAboutToQuit() {
#if defined(SWIFTEN_PLATFORM_MACOSX)
    // This is required so Sparkle knows about the application shutting down
    // and can update the application in background.
     CocoaUIHelpers::sendCocoaApplicationWillTerminateNotification();
#endif
}

void QtSwift::handleAutoUpdaterStateChanged(AutoUpdater::State updatedState) {
    switch (updatedState) {
    case AutoUpdater::State::NotCheckedForUpdatesYet:
        break;
    case AutoUpdater::State::CheckingForUpdate:
        break;
    case AutoUpdater::State::DownloadingUpdate:
        break;
    case AutoUpdater::State::ErrorCheckingForUpdate:
        break;
    case AutoUpdater::State::NoUpdateAvailable:
        break;
    case AutoUpdater::State::RestartToInstallUpdate:
        notifier_->showMessage(Notifier::SystemMessage, Q2PSTRING(tr("Swift Update Available")), Q2PSTRING(tr("Restart Swift to update to the new Swift version.")), "", [](){});
    }
}

}