/*
 * SPDX-License-Identifier: GPL-3.0-or-later
 * SPDX-FileCopyrightText: 2019 Bhushan Shah <bshah@kde.org>
 * SPDX-FileCopyrightText: 2020-2021 Johan Ouwerkerk <jm.ouwerkerk@gmail.com>
 * SPDX-FileCopyrightText: 2021 Devin Lin <espidev@gmail.com>
 */

#include <QCommandLineParser>
#include <QQmlApplicationEngine>
#include <QQuickStyle>
#include <QUrl>
#include <QtQml>

#ifdef Q_OS_ANDROID
#include <QGuiApplication>
#else
#include <QApplication>
#endif

#include <KAboutData>
#include <KLocalizedContext>
#include <KLocalizedString>

#include "app/cli.h"
#include "app/keysmith.h"
#include "app/vms.h"
#include "model/accounts.h"
#include "model/input.h"
#include "validators/countervalidator.h"
#include "validators/datetimevalidator.h"
#include "validators/issuervalidator.h"
#include "validators/secretvalidator.h"

#include "keysmith-features.h"
#include "version.h"

/*
 * Integrate QML debugging/profiling support, conditional on building Keysmith in Debug mode.
 * NDEBUG is defined by the C standard and automatically set by CMake during a Release type build, hence the double negative.
 */
#ifndef NDEBUG
#include <QQmlDebuggingEnabler>
static QQmlDebuggingEnabler enabler;
#endif

#ifdef ENABLE_DBUS_INTERFACE
#include <KDBusService>
#endif

Q_DECL_EXPORT int main(int argc, char *argv[])
{
#ifdef Q_OS_ANDROID
    QGuiApplication app(argc, argv);
    QQuickStyle::setStyle(QStringLiteral("org.kde.breeze"));
#else
    QApplication app(argc, argv);
    if (qEnvironmentVariableIsEmpty("QT_QUICK_CONTROLS_STYLE")) {
        QQuickStyle::setStyle(QStringLiteral("org.kde.desktop"));
    }
#endif

    KLocalizedString::setApplicationDomain("keysmith");

    QCoreApplication::setOrganizationName(QStringLiteral("KDE"));
    QCoreApplication::setOrganizationDomain(QStringLiteral("kde.org"));
    QCoreApplication::setApplicationName(QStringLiteral("keysmith"));
    QCoreApplication::setApplicationVersion(KEYSMITH_VERSION_STRING);
    QGuiApplication::setApplicationDisplayName(i18nc("@title", "Keysmith"));
    
    // about
    const QString applicationDescription = i18n("generate two-factor authentication (2FA) tokens");

    KAboutData about(QStringLiteral("keysmith"),
                     i18n("Keysmith"),
                     KEYSMITH_VERSION_STRING,
                     applicationDescription,
                     KAboutLicense::GPL_V3,
                     i18n("© 2019 KDE Community"));
    about.addAuthor(QStringLiteral("Bhushan Shah"), QString(), QStringLiteral("bshah@kde.org"));
    about.addAuthor(QStringLiteral("Johan Ouwerkerk"), QString(), QStringLiteral("jm.ouwerkerk@gmail.com"));
    about.addAuthor(QStringLiteral("Devin Lin"), QString(), QStringLiteral("espidev@gmail.com"));
    KAboutData::setApplicationData(about);

    QCommandLineParser cliParser;

    // default/boilerplate options handled entirely via command line
    const auto helpOption = cliParser.addHelpOption();
    const auto versionOption = cliParser.addVersionOption();

    bool parseOk = app::Proxy::parseCommandLine(cliParser, QCoreApplication::arguments());

    /*
     * First check for pure command line options and handle these.
     * If any are found, the application should not bother with an UI.
     */

    if (cliParser.isSet(helpOption)) {
        int ret = parseOk ? 0 : 1;
        cliParser.showHelp(ret);
        return ret; // just to be explicit: showHelp() is documented to call exit()
    }

    if (cliParser.isSet(versionOption)) {
        cliParser.showVersion();
        return 0; // just to be explicit: showVersion() is documented to call exit()
    }

    app::Proxy proxy(&app);

#ifdef ENABLE_DBUS_INTERFACE
    KDBusService service(KDBusService::Unique);
    QObject::connect(&service, &KDBusService::activateRequested, &proxy, &app::Proxy::handleDBusActivation);
#endif

    QQmlApplicationEngine engine;
    engine.rootContext()->setContextObject(new KLocalizedContext(&engine));

    qmlRegisterUncreatableType<app::AddAccountViewModel>("Keysmith.Application",
                                                         1,
                                                         0,
                                                         "AddAccountViewModel",
                                                         QStringLiteral("Should be automatically provided through Keysmith.Application.Navigation signals"));
    qmlRegisterUncreatableType<app::RenameAccountViewModel>("Keysmith.Application",
                                                            1,
                                                            0,
                                                            "RenameAccountViewModel",
                                                            QStringLiteral("Should be automatically provided through Keysmith.Navigation signals"));
    qmlRegisterUncreatableType<app::ErrorViewModel>("Keysmith.Application",
                                                    1,
                                                    0,
                                                    "ErrorViewModel",
                                                    QStringLiteral("Should be automatically provided through Keysmith.Navigation signals"));
    qmlRegisterUncreatableType<app::SetupPasswordViewModel>("Keysmith.Application",
                                                            1,
                                                            0,
                                                            "SetupPasswordViewModel",
                                                            QStringLiteral("Should be automatically provided through Keysmith.Navigation signals"));
    qmlRegisterUncreatableType<app::UnlockAccountsViewModel>("Keysmith.Application",
                                                             1,
                                                             0,
                                                             "UnlockAccountsViewModel",
                                                             QStringLiteral("Should be automatically provided through Keysmith.Navigation signals"));
    qmlRegisterUncreatableType<app::AccountsOverviewViewModel>("Keysmith.Application",
                                                               1,
                                                               0,
                                                               "AccountsOverviewViewModel",
                                                               QStringLiteral("Should be automatically provided through Keysmith.Navigation signals"));
    qmlRegisterUncreatableType<app::Navigation>("Keysmith.Application",
                                                1,
                                                0,
                                                "Navigation",
                                                QStringLiteral("Use the Keysmith singleton to obtain a Navigation"));

    qmlRegisterUncreatableType<model::SimpleAccountListModel>("Keysmith.Models",
                                                              1,
                                                              0,
                                                              "AccountListModel",
                                                              QStringLiteral("Use the Keysmith singleton to obtain an AccountListModel"));
    qmlRegisterUncreatableType<model::PasswordRequest>("Keysmith.Models",
                                                       1,
                                                       0,
                                                       "PasswordRequestModel",
                                                       QStringLiteral("Use the Keysmith singleton to obtain an PasswordRequestModel"));
    qmlRegisterUncreatableType<model::AccountView>("Keysmith.Models",
                                                   1,
                                                   0,
                                                   "Account",
                                                   QStringLiteral("Use an AccountListModel from the Keysmith singleton to obtain an Account"));
    qmlRegisterType<model::AccountInput>("Keysmith.Models", 1, 0, "ValidatedAccountInput");
    qmlRegisterType<model::SortedAccountsListModel>("Keysmith.Models", 1, 0, "SortedAccountListModel");
    qmlRegisterType<model::AccountNameValidator>("Keysmith.Validators", 1, 0, "AccountNameValidator");
    qmlRegisterType<validators::EpochValidator>("Keysmith.Validators", 1, 0, "TOTPEpochValidator");
    qmlRegisterType<validators::IssuerValidator>("Keysmith.Validators", 1, 0, "AccountIssuerValidator");
    qmlRegisterType<validators::Base32Validator>("Keysmith.Validators", 1, 0, "Base32SecretValidator");
    qmlRegisterType<validators::UnsignedLongValidator>("Keysmith.Validators", 1, 0, "HOTPCounterValidator");
    qmlRegisterSingletonType<app::Keysmith>("Keysmith.Application", 1, 0, "Keysmith", [&proxy](QQmlEngine *qml, QJSEngine *js) -> QObject * {
        Q_UNUSED(js);

        auto app = new app::Keysmith(new app::Navigation(qml));
        proxy.enable(app);
        return app;
    });
    qmlRegisterSingletonType<app::CommandLineOptions>("Keysmith.Application",
                                                      1,
                                                      0,
                                                      "CommandLine",
                                                      [parseOk, &cliParser](QQmlEngine *qml, QJSEngine *js) -> QObject * {
                                                          Q_UNUSED(qml);
                                                          Q_UNUSED(js);

                                                          return new app::CommandLineOptions(cliParser, parseOk);
                                                      });

    engine.loadFromModule("org.kde.keysmith", "Main");
    if (engine.rootObjects().isEmpty()) {
        return -1;
    }
    proxy.proxy(cliParser, parseOk);
    return app.exec();
}