/*
  This file is part of KDDockWidgets.

  SPDX-FileCopyrightText: 2019-2022 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
  Author: Sérgio Martins <sergio.martins@kdab.com>

  SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only

  Contact KDAB at <info@kdab.com> for commercial licensing options.
*/

// We don't care about performance related checks in the tests
// clazy:excludeall=ctor-missing-parent-argument,missing-qobject-macro,range-loop,missing-typeinfo,detaching-member,function-args-by-ref,non-pod-global-static,reserve-candidates,qstring-allocations

#include "Operations.h"
#include "DockRegistry.h"
#include "DockWidget.h"
#include "DockWidget_p.h"
#include "FloatingWindow_p.h"
#include "Frame_p.h"
#include "Fuzzer.h"

#include <QTest>

using namespace KDDockWidgets;
using namespace KDDockWidgets::Testing;
using namespace KDDockWidgets::Testing::Operations;

static QString operationTypeStr(OperationType optype)
{
    return QMetaEnum::fromType<OperationType>().valueToKey(optype);
}

OperationBase::OperationBase(KDDockWidgets::Testing::Operations::OperationType type, Fuzzer *fuzzer)
    : m_operationType(type)
    , m_fuzzer(fuzzer)
{
}

OperationBase::~OperationBase()
{
}

void OperationBase::execute()
{
    if (!hasParams())
        generateRandomParams();

    if (hasParams()) { // Check again, as generateRandomParams() is not guaranteed
        updateDescription();
        execute_impl();

        if (m_sleepMS > 0)
            QTest::qWait(m_sleepMS);
    }
}

QVariantMap OperationBase::toVariantMap() const
{
    const QVariantMap params = paramsToVariantMap();
    if (!hasParams())
        return {};

    QVariantMap map;
    map["type"] = m_operationType;
    map["params"] = params;
    map["comment"] = description();

    return map;
}

OperationBase::Ptr OperationBase::fromVariantMap(Fuzzer *fuzzer, const QVariantMap &map)
{
    if (!map.contains("type") || !map.contains("params")) {
        qDebug() << Q_FUNC_INFO << "Invalid map";
        return {};
    }

    auto operationType = OperationType(map["type"].toInt());

    OperationBase::Ptr ptr = OperationBase::newOperation(fuzzer, operationType);
    if (ptr) {
        const QVariantMap params = map["params"].toMap();
        if (params.isEmpty()) {
            qDebug() << Q_FUNC_INFO << "Invalid params";
        } else {
            ptr->fillParamsFromVariantMap(params);
        }

        if (map.contains("pause"))
            ptr->m_sleepMS = map["pause"].toInt();
    } else {
        qDebug() << Q_FUNC_INFO << "Failed to fill params";
    }

    return ptr;
}

OperationBase::Ptr OperationBase::newOperation(Fuzzer *fuzzer, OperationType type)
{
    OperationBase::Ptr ptr;

    switch (type) {
    case OperationType_Count:
    case OperationType_None:
        qDebug() << Q_FUNC_INFO << "Invalid type";
        break;
    case OperationType_CloseViaDockWidgetAPI:
        ptr = OperationBase::Ptr(new CloseViaDockWidgetAPI(fuzzer));
        break;
    case OperationType_HideViaDockWidgetAPI:
        ptr = OperationBase::Ptr(new HideViaDockWidgetAPI(fuzzer));
        break;
    case OperationType_ShowViaDockWidgetAPI:
        ptr = OperationBase::Ptr(new ShowViaDockWidgetAPI(fuzzer));
        break;
    case OperationType_AddDockWidget:
        ptr = OperationBase::Ptr(new AddDockWidget(fuzzer));
        break;
    case OperationType_AddDockWidgetAsTab:
        ptr = OperationBase::Ptr(new AddDockWidgetAsTab(fuzzer));
        break;
    case OperationType_SaveLayout:
        ptr = OperationBase::Ptr(new SaveLayout(fuzzer));
        break;
    case OperationType_RestoreLayout:
        ptr = OperationBase::Ptr(new RestoreLayout(fuzzer));
        break;
    }

    return ptr;
}

QString OperationBase::toString()
{
    if (m_description.isEmpty())
        updateDescription();

    return QStringLiteral("type=%1;description=%2").arg(operationTypeStr(m_operationType), m_description);
}

Controllers::DockWidget *OperationBase::dockByName(const QString &name) const
{
    return DockRegistry::self()->dockByName(name);
}

MainWindowBase *OperationBase::mainWindowByName(const QString &name) const
{
    return DockRegistry::self()->mainWindowByName(name);
}

QString OperationBase::dockStr(const QString &name) const
{
    if (auto dw = dockByName(name)) {
        if (dw->isVisible())
            return name;
        return QStringLiteral("%1-[hidden]").arg(name);
    } else {
        return QStringLiteral("null");
    }
}

CloseViaDockWidgetAPI::CloseViaDockWidgetAPI(Fuzzer *fuzzer)
    : OperationBase(OperationType_CloseViaDockWidgetAPI, fuzzer)
{
}

void CloseViaDockWidgetAPI::generateRandomParams()
{
    if (Controllers::DockWidget *dw = m_fuzzer->getRandomDockWidget())
        if (dw->isVisible())
            m_dockWidgetName = dw->uniqueName();
}

bool CloseViaDockWidgetAPI::hasParams() const
{
    return !m_dockWidgetName.isEmpty();
}

void CloseViaDockWidgetAPI::updateDescription()
{
    m_description = QStringLiteral("Closing %1").arg(dockStr(m_dockWidgetName));
}

void CloseViaDockWidgetAPI::execute_impl()
{
    Controllers::DockWidget *dw = dockByName(m_dockWidgetName);
    auto fw = dw->floatingWindow();
    dw->close();
    if (fw && fw->beingDeleted())
        Testing::waitForDeleted(fw);
}

QVariantMap CloseViaDockWidgetAPI::paramsToVariantMap() const
{
    QVariantMap map;
    if (!m_dockWidgetName.isEmpty())
        map["dockWidgetName"] = m_dockWidgetName;
    return map;
}

void CloseViaDockWidgetAPI::fillParamsFromVariantMap(const QVariantMap &map)
{
    m_dockWidgetName = map["dockWidgetName"].toString();
}

HideViaDockWidgetAPI::HideViaDockWidgetAPI(Fuzzer *fuzzer)
    : OperationBase(OperationType_HideViaDockWidgetAPI, fuzzer)
{
}

void HideViaDockWidgetAPI::generateRandomParams()
{
    if (Controllers::DockWidget *dw = m_fuzzer->getRandomDockWidget())
        if (dw->isVisible())
            m_dockWidgetName = dw->uniqueName();
}

bool HideViaDockWidgetAPI::hasParams() const
{
    return !m_dockWidgetName.isEmpty();
}

void HideViaDockWidgetAPI::updateDescription()
{
    m_description = QStringLiteral("Hiding %1").arg(dockStr(m_dockWidgetName));
}

void HideViaDockWidgetAPI::execute_impl()
{
    Controllers::DockWidget *dw = dockByName(m_dockWidgetName);
    if (!dw) {
        qDebug() << Q_FUNC_INFO << "not found" << m_dockWidgetName;
        Q_ASSERT(false);
    }

    auto fw = dw->floatingWindow();
    dw->close();
    if (fw && fw->beingDeleted())
        Testing::waitForDeleted(fw);
}

QVariantMap HideViaDockWidgetAPI::paramsToVariantMap() const
{
    QVariantMap map;
    if (!m_dockWidgetName.isEmpty())
        map["dockWidgetName"] = m_dockWidgetName;
    return map;
}

void HideViaDockWidgetAPI::fillParamsFromVariantMap(const QVariantMap &map)
{
    m_dockWidgetName = map["dockWidgetName"].toString();
}

ShowViaDockWidgetAPI::ShowViaDockWidgetAPI(Fuzzer *fuzzer)
    : OperationBase(OperationType_ShowViaDockWidgetAPI, fuzzer)
{
}

void ShowViaDockWidgetAPI::generateRandomParams()
{
    if (Controllers::DockWidget *dw = m_fuzzer->getRandomDockWidget())
        if (!dw->isVisible())
            m_dockWidgetName = dw->uniqueName();
}

bool ShowViaDockWidgetAPI::hasParams() const
{
    return !m_dockWidgetName.isEmpty();
}

void ShowViaDockWidgetAPI::updateDescription()
{
    m_description = QStringLiteral("Showing %1").arg(dockStr(m_dockWidgetName));
}

void ShowViaDockWidgetAPI::execute_impl()
{
    Controllers::DockWidget *dw = dockByName(m_dockWidgetName);
    dw->show();
}

QVariantMap ShowViaDockWidgetAPI::paramsToVariantMap() const
{
    QVariantMap map;
    if (!m_dockWidgetName.isEmpty())
        map["dockWidgetName"] = m_dockWidgetName;
    return map;
}

void ShowViaDockWidgetAPI::fillParamsFromVariantMap(const QVariantMap &map)
{
    m_dockWidgetName = map["dockWidgetName"].toString();
}

AddDockWidget::AddDockWidget(Fuzzer *fuzzer)
    : OperationBase(OperationType_AddDockWidget, fuzzer)
{
}

void AddDockWidget::generateRandomParams()
{
    m_params = m_fuzzer->getRandomAddDockWidgetParams();
}

bool AddDockWidget::hasParams() const
{
    return !m_params.isNull();
}

void AddDockWidget::updateDescription()
{
    if (m_params.relativeToName.isEmpty())
        m_description = QStringLiteral("AddDockWidget %1 to %2").arg(dockStr(m_params.dockWidgetName), KDDockWidgets::locationStr(m_params.location));
    else
        m_description = QStringLiteral("AddDockWidget %1 to %2, relative to %3").arg(dockStr(m_params.dockWidgetName), KDDockWidgets::locationStr(m_params.location), dockStr(m_params.relativeToName));
}

void AddDockWidget::execute_impl()
{
    auto fw = m_params.dockWidget()->floatingWindow();
    m_params.mainWindow()->addDockWidget(m_params.dockWidget(), m_params.location,
                                         m_params.relativeTo(), m_params.addingOption);
    if (fw && fw->beingDeleted())
        Testing::waitForDeleted(fw);
}

QVariantMap AddDockWidget::paramsToVariantMap() const
{
    return m_params.isNull() ? QVariantMap()
                             : m_params.toVariantMap();
}

void AddDockWidget::fillParamsFromVariantMap(const QVariantMap &map)
{
    m_params = AddDockWidgetParams::fillFromVariantMap(map);
}

AddDockWidgetAsTab::AddDockWidgetAsTab(Fuzzer *fuzzer)
    : OperationBase(OperationType_AddDockWidgetAsTab, fuzzer)
{
}

void AddDockWidgetAsTab::generateRandomParams()
{
    Controllers::DockWidget *dw = m_fuzzer->getRandomDockWidget();
    if (!dw)
        return;

    Controllers::DockWidget *dw2 = nullptr;

    if (auto group = dw->d->group()) {
        auto toExclude = group->dockWidgets();
        for (auto dockWidget : DockRegistry::self()->dockwidgets()) {
            if (dockWidget->window() == dw->window())
                toExclude.push_back(dockWidget);
        }

        dw2 = m_fuzzer->getRandomDockWidget(toExclude);
    }

    if (!dw2)
        return;
    m_dockWidgetName = dw->uniqueName();
    m_dockWidgetToAddName = dw2->uniqueName();
}

bool AddDockWidgetAsTab::hasParams() const
{
    return !m_dockWidgetName.isEmpty() && !m_dockWidgetToAddName.isEmpty();
}

void AddDockWidgetAsTab::updateDescription()
{
    m_description = QStringLiteral("AddDockWidgetAsTab %1 onto %2").arg(dockStr(m_dockWidgetToAddName), dockStr(m_dockWidgetName));
}

void AddDockWidgetAsTab::execute_impl()
{
    Controllers::DockWidget *dw = dockByName(m_dockWidgetName);
    Controllers::DockWidget *dw2 = dockByName(m_dockWidgetToAddName);

    auto fw = dw2->floatingWindow();
    dw->addDockWidgetAsTab(dw2);
    if (fw && fw->beingDeleted())
        Testing::waitForDeleted(fw);
}

QVariantMap AddDockWidgetAsTab::paramsToVariantMap() const
{
    QVariantMap map;

    if (hasParams()) {
        map["dockWidgetName"] = m_dockWidgetName;
        map["dockWidgetToAddName"] = m_dockWidgetToAddName;
    }

    return map;
}

void AddDockWidgetAsTab::fillParamsFromVariantMap(const QVariantMap &map)
{
    m_dockWidgetName = map["dockWidgetName"].toString();
    m_dockWidgetToAddName = map["dockWidgetToAddName"].toString();
}

SaveLayout::SaveLayout(Fuzzer *fuzzer)
    : OperationBase(OperationType_SaveLayout, fuzzer)
{
}

bool SaveLayout::hasParams() const
{
    return true;
}

void SaveLayout::updateDescription()
{
    m_description = QStringLiteral("SaveLayout");
}

void SaveLayout::execute_impl()
{
    LayoutSaver saver;
    m_fuzzer->setLastSavedLayout(saver.serializeLayout());

    qDebug() << m_fuzzer << m_fuzzer->lastSavedLayout().isEmpty();
}

void SaveLayout::generateRandomParams()
{
}

QVariantMap SaveLayout::paramsToVariantMap() const
{
    return {};
}

void SaveLayout::fillParamsFromVariantMap(const QVariantMap &)
{
}

RestoreLayout::RestoreLayout(Fuzzer *fuzzer)
    : OperationBase(OperationType_RestoreLayout, fuzzer)
{
}

bool RestoreLayout::hasParams() const
{
    return true;
}

void RestoreLayout::updateDescription()
{
    m_description = QStringLiteral("RestoreLayout");
}

void RestoreLayout::execute_impl()
{
    QByteArray serialized = m_fuzzer->lastSavedLayout();
    if (serialized.isEmpty()) {
        qDebug() << "Skipping, nothing to restore";
        return;
    }

    LayoutSaver saver;
    saver.restoreLayout(serialized);
}

void RestoreLayout::generateRandomParams()
{
}

QVariantMap RestoreLayout::paramsToVariantMap() const
{
    return {};
}

void RestoreLayout::fillParamsFromVariantMap(const QVariantMap &)
{
}