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** Copyright (C) 2020 The Qt Company Ltd.
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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#include "qmlmultilanguageaspect.h"

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

#include <projectexplorer/project.h>
#include <projectexplorer/projectexplorer.h>
#include <projectexplorer/target.h>

static bool isMultilanguagePresent()
{
    const QVector<ExtensionSystem::PluginSpec *> specs = ExtensionSystem::PluginManager::plugins();
    return std::find_if(specs.begin(),
                        specs.end(),
                        [](ExtensionSystem::PluginSpec *spec) {
                            return spec->name() == "MultiLanguage";
                        })
           != specs.end();
}

static Utils::FilePath getMultilanguageDatabaseFilePath(ProjectExplorer::Target *target)
{
    if (target) {
        auto filePath = target->project()->projectDirectory().pathAppended(
            "/multilanguage-experimental-v2.db");
        if (filePath.exists())
            return filePath;
    }
    return {};
}

static QObject *getPreviewPlugin()
{
    auto pluginIt = std::find_if(ExtensionSystem::PluginManager::plugins().begin(),
                                 ExtensionSystem::PluginManager::plugins().end(),
                                 [](const ExtensionSystem::PluginSpec *p) {
                                     return p->name() == "QmlPreview";
                                 });

    if (pluginIt != ExtensionSystem::PluginManager::plugins().constEnd())
        return (*pluginIt)->plugin();

    return nullptr;
}


namespace QmlProjectManager {

QmlMultiLanguageAspect::QmlMultiLanguageAspect(ProjectExplorer::Target *target)
    : m_target(target)
{
    setVisible(isMultilanguagePresent());
    setSettingsKey(Constants::USE_MULTILANGUAGE_KEY);
    setLabel(tr("Use MultiLanguage translation database."), BaseBoolAspect::LabelPlacement::AtCheckBox);
    setToolTip(tr("Enable loading application with special desktop SQLite translation database."));

    setDefaultValue(!databaseFilePath().isEmpty());
    QVariantMap getDefaultValues;
    fromMap(getDefaultValues);

    if (auto previewPlugin = getPreviewPlugin())
        connect(previewPlugin, SIGNAL(localeChanged(QString)), this, SLOT(setLastUsedLanguage(QString)));
}

QmlMultiLanguageAspect::~QmlMultiLanguageAspect()
{
}

void QmlMultiLanguageAspect::setLastUsedLanguage(const QString &language)
{
    if (auto previewPlugin = getPreviewPlugin())
        previewPlugin->setProperty("locale", language);
    if (m_lastUsedLanguage != language) {
        m_lastUsedLanguage = language;
        emit changed();
    }
}

QString QmlMultiLanguageAspect::lastUsedLanguage() const
{
    return m_lastUsedLanguage;
}

Utils::FilePath QmlMultiLanguageAspect::databaseFilePath() const
{
    if (m_databaseFilePath.isEmpty())
        m_databaseFilePath = getMultilanguageDatabaseFilePath(m_target);
    return m_databaseFilePath;
}

void QmlMultiLanguageAspect::toMap(QVariantMap &map) const
{
    BaseBoolAspect::toMap(map);
    if (!m_lastUsedLanguage.isEmpty())
        map.insert(Constants::LAST_USED_LANGUAGE, m_lastUsedLanguage);
}

void QmlMultiLanguageAspect::fromMap(const QVariantMap &map)
{
    BaseBoolAspect::fromMap(map);
    setLastUsedLanguage(map.value(Constants::LAST_USED_LANGUAGE, "en").toString());
}

} // namespace QmlProjectManager