// 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 "plugindialog.h"

#include "coreplugintr.h"
#include "icore.h"
#include "plugininstallwizard.h"

#include <extensionsystem/plugindetailsview.h>
#include <extensionsystem/pluginerrorview.h>
#include <extensionsystem/pluginmanager.h>
#include <extensionsystem/pluginspec.h>
#include <extensionsystem/pluginview.h>

#include <utils/algorithm.h>
#include <utils/fancylineedit.h>
#include <utils/layoutbuilder.h>

#include <QDialog>
#include <QDialogButtonBox>
#include <QPushButton>

using namespace ExtensionSystem;
using namespace Utils;

namespace Core::Internal {

class PluginDialog final : public QDialog
{
public:
    explicit PluginDialog();

private:
    void updateButtons();
    void openDetails(ExtensionSystem::PluginSpec *spec);
    void openErrorDetails();
    void closeDialog();
    void showInstallWizard();

    ExtensionSystem::PluginView *m_view;

    QPushButton *m_detailsButton;
    QPushButton *m_errorDetailsButton;
    QPushButton *m_installButton;
    bool m_isRestartRequired = false;
    QSet<ExtensionSystem::PluginSpec *> m_softLoad;
};

PluginDialog::PluginDialog()
    : QDialog(ICore::dialogParent()),
      m_view(new ExtensionSystem::PluginView(this))
{
    auto filterEdit = new Utils::FancyLineEdit(this);
    filterEdit->setFocus();
    filterEdit->setFiltering(true);
    connect(filterEdit, &Utils::FancyLineEdit::filterChanged,
            m_view, &ExtensionSystem::PluginView::setFilter);

    auto buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
    m_detailsButton = buttonBox->addButton(Tr::tr("Details"), QDialogButtonBox::ActionRole);
    m_detailsButton->setEnabled(false);
    m_errorDetailsButton = buttonBox->addButton(Tr::tr("Error Details"),
                                                QDialogButtonBox::ActionRole);
    m_errorDetailsButton->setEnabled(false);
    m_installButton = buttonBox->addButton(Tr::tr("Install Plugin..."),
                                           QDialogButtonBox::ActionRole);

    using namespace Layouting;
    Column {
        filterEdit,
        m_view,
        buttonBox,
    }.attachTo(this);

    resize(760, 440);
    setWindowTitle(Tr::tr("Installed Plugins"));

    connect(m_view, &ExtensionSystem::PluginView::currentPluginChanged,
            this, &PluginDialog::updateButtons);
    connect(m_view, &ExtensionSystem::PluginView::pluginActivated,
            this, &PluginDialog::openDetails);
    connect(m_view, &ExtensionSystem::PluginView::pluginsChanged,
            this, [this](const QSet<PluginSpec *> &plugins, bool enable) {
        for (PluginSpec *plugin : plugins) {
            if (enable && plugin->isEffectivelySoftloadable()) {
                m_softLoad.insert(plugin);
            } else {
                m_softLoad.remove(plugin); // In case it was added, harmless otherwise.
                m_isRestartRequired = true;
            }
        }
    });
    connect(m_detailsButton, &QAbstractButton::clicked, this,
            [this]  { openDetails(m_view->currentPlugin()); });
    connect(m_errorDetailsButton, &QAbstractButton::clicked,
            this, &PluginDialog::openErrorDetails);
    connect(m_installButton, &QAbstractButton::clicked, this, &PluginDialog::showInstallWizard);
    connect(buttonBox, &QDialogButtonBox::accepted, this, &PluginDialog::closeDialog);
    connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
    connect(this, &QDialog::rejected, m_view, &ExtensionSystem::PluginView::cancelChanges);
    updateButtons();
}

void PluginDialog::closeDialog()
{
    PluginManager::writeSettings();

    PluginManager::loadPluginsAtRuntime(m_softLoad);

    if (m_isRestartRequired)
        ICore::askForRestart(msgPluginChangesRequireRestart());
    accept();
}

void PluginDialog::showInstallWizard()
{
    if (executePluginInstallWizard() == InstallResult::NeedsRestart)
        m_isRestartRequired = true;
}

void PluginDialog::updateButtons()
{
    ExtensionSystem::PluginSpec *selectedSpec = m_view->currentPlugin();
    if (selectedSpec) {
        m_detailsButton->setEnabled(true);
        m_errorDetailsButton->setEnabled(selectedSpec->hasError());
    } else {
        m_detailsButton->setEnabled(false);
        m_errorDetailsButton->setEnabled(false);
    }
}

void PluginDialog::openDetails(ExtensionSystem::PluginSpec *spec)
{
    if (!spec)
        return;
    PluginDetailsView::showModal(this, spec);
}

void PluginDialog::openErrorDetails()
{
    ExtensionSystem::PluginSpec *spec = m_view->currentPlugin();
    if (!spec)
        return;
    QDialog dialog(this);
    dialog.setWindowTitle(Tr::tr("Plugin Errors of %1").arg(spec->name()));
    auto errors = new ExtensionSystem::PluginErrorView(&dialog);
    errors->update(spec);
    QDialogButtonBox *buttons = new QDialogButtonBox(QDialogButtonBox::Close, Qt::Horizontal, &dialog);

    using namespace Layouting;
    Column {
        errors,
        buttons,
    }.attachTo(&dialog);

    connect(buttons, &QDialogButtonBox::accepted, &dialog, &QDialog::accept);
    connect(buttons, &QDialogButtonBox::rejected, &dialog, &QDialog::reject);
    dialog.resize(500, 300);
    dialog.exec();
}

void showAboutPlugins()
{
    PluginDialog dialog;
    dialog.exec();
}

} // Core::Internal
