/*
    KWin - the KDE window manager
    This file is part of the KDE project.

    SPDX-FileCopyrightText: 2013 Martin Gräßlin <mgraesslin@kde.org>

    SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "genericscriptedconfig.h"

#include "config-kwin.h"

#include <kwineffects_interface.h>

#include <KLocalizedString>
#include <KLocalizedTranslator>
#include <kconfigloader.h>

#include <QFile>
#include <QLabel>
#include <QStandardPaths>
#include <QUiLoader>
#include <QVBoxLayout>

namespace KWin
{

QObject *GenericScriptedConfigFactory::create(const char *iface, QWidget *parentWidget, QObject *parent, const QVariantList &args)
{
    if (qstrcmp(iface, "KCModule") == 0) {
        if (args.count() < 2) {
            qWarning() << Q_FUNC_INFO << "expects two arguments (plugin id, package type)";
            return nullptr;
        }

        const QString pluginId = args.at(0).toString();
        const QString packageType = args.at(1).toString();

        if (packageType == QLatin1StringView("KWin/Effect")) {
            return new ScriptedEffectConfig(pluginId, parentWidget, args);
        } else if (packageType == QLatin1StringView("KWin/Script")) {
            return new ScriptingConfig(pluginId, parentWidget, args);
        } else {
            qWarning() << Q_FUNC_INFO << "got unknown package type:" << packageType;
        }
    }

    return nullptr;
}

GenericScriptedConfig::GenericScriptedConfig(const QString &keyword, QWidget *parent, const QVariantList &args)
    : KCModule(parent, KPluginMetaData())
    , m_packageName(keyword)
    , m_translator(new KLocalizedTranslator(this))
{
    QCoreApplication::instance()->installTranslator(m_translator);
}

GenericScriptedConfig::~GenericScriptedConfig()
{
}

void GenericScriptedConfig::createUi()
{
    QVBoxLayout *layout = new QVBoxLayout(widget());

    const QString packageRoot = QStandardPaths::locate(QStandardPaths::GenericDataLocation,
                                                       QLatin1String("kwin/") + typeName() + QLatin1Char('/') + m_packageName,
                                                       QStandardPaths::LocateDirectory);
    if (packageRoot.isEmpty()) {
        layout->addWidget(new QLabel(i18nc("Error message", "Could not locate package metadata")));
        return;
    }

    const KPluginMetaData metaData = KPluginMetaData::fromJsonFile(packageRoot + QLatin1String("/metadata.json"));
    if (!metaData.isValid()) {
        layout->addWidget(new QLabel(i18nc("Required file does not exist", "%1 does not contain a valid metadata.json file", qPrintable(packageRoot))));
        return;
    }

    const QString kconfigXTFile = packageRoot + QLatin1String("/contents/config/main.xml");
    if (!QFileInfo::exists(kconfigXTFile)) {
        layout->addWidget(new QLabel(i18nc("Required file does not exist", "%1 does not exist", qPrintable(kconfigXTFile))));
        return;
    }

    const QString uiPath = packageRoot + QLatin1String("/contents/ui/config.ui");
    if (!QFileInfo::exists(uiPath)) {
        layout->addWidget(new QLabel(i18nc("Required file does not exist", "%1 does not exist", qPrintable(uiPath))));
        return;
    }

    const QString localePath = packageRoot + QLatin1String("/contents/locale");
    if (QFileInfo::exists(localePath)) {
        KLocalizedString::addDomainLocaleDir(metaData.value("X-KWin-Config-TranslationDomain").toUtf8(), localePath);
    }

    QFile xmlFile(kconfigXTFile);
    KConfigGroup cg = configGroup();
    KConfigLoader *configLoader = new KConfigLoader(cg, &xmlFile, this);
    // load the ui file
    QUiLoader *loader = new QUiLoader(this);
    loader->setLanguageChangeEnabled(true);
    QFile uiFile(uiPath);
    m_translator->setTranslationDomain(metaData.value("X-KWin-Config-TranslationDomain"));

    uiFile.open(QFile::ReadOnly);
    QWidget *customConfigForm = loader->load(&uiFile, widget());
    m_translator->addContextToMonitor(customConfigForm->objectName());
    uiFile.close();

    // send a custom event to the translator to retranslate using our translator
    QEvent le(QEvent::LanguageChange);
    QCoreApplication::sendEvent(customConfigForm, &le);

    layout->addWidget(customConfigForm);
    addConfig(configLoader, customConfigForm);
}

void GenericScriptedConfig::save()
{
    KCModule::save();
    reload();
}

void GenericScriptedConfig::reload()
{
}

ScriptedEffectConfig::ScriptedEffectConfig(const QString &keyword, QWidget *parent, const QVariantList &args)
    : GenericScriptedConfig(keyword, parent, args)
{
    createUi();
}

ScriptedEffectConfig::~ScriptedEffectConfig()
{
}

QString ScriptedEffectConfig::typeName() const
{
    return QStringLiteral("effects");
}

KConfigGroup ScriptedEffectConfig::configGroup()
{
    return KSharedConfig::openConfig(KWIN_CONFIG)->group(QLatin1String("Effect-") + packageName());
}

void ScriptedEffectConfig::reload()
{
    OrgKdeKwinEffectsInterface interface(QStringLiteral("org.kde.KWin"),
                                         QStringLiteral("/Effects"),
                                         QDBusConnection::sessionBus());
    interface.reconfigureEffect(packageName());
}

ScriptingConfig::ScriptingConfig(const QString &keyword, QWidget *parent, const QVariantList &args)
    : GenericScriptedConfig(keyword, parent, args)
{
    createUi();
}

ScriptingConfig::~ScriptingConfig()
{
}

KConfigGroup ScriptingConfig::configGroup()
{
    return KSharedConfig::openConfig(KWIN_CONFIG)->group(QLatin1String("Script-") + packageName());
}

QString ScriptingConfig::typeName() const
{
    return QStringLiteral("scripts");
}

void ScriptingConfig::reload()
{
    // TODO: what to call
}

} // namespace

#include "moc_genericscriptedconfig.cpp"