// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#include "bindingeditor.h"
#include "abstractview.h"
#include "model.h"
#include "rewriterview.h"

#include <coreplugin/icore.h>
#include <coreplugin/actionmanager/actionmanager.h>
#include <bindingeditor/bindingeditordialog.h>

#include <qmlmodelnodeproxy.h>
#include <propertyeditorvalue.h>

#include <bindingproperty.h>
#include <variantproperty.h>

namespace QmlDesigner {

BindingEditor::BindingEditor(QObject *)
{
}

BindingEditor::~BindingEditor()
{
    hideWidget();
}

void BindingEditor::registerDeclarativeType()
{
    qmlRegisterType<BindingEditor>("HelperWidgets", 2, 0, "BindingEditor");
}

void BindingEditor::prepareDialog()
{
    m_dialog = Utils::makeUniqueObjectPtr<BindingEditorDialog>(Core::ICore::dialogParent());

    QObject::connect(m_dialog.get(), &AbstractEditorDialog::accepted, this, &BindingEditor::accepted);
    QObject::connect(m_dialog.get(), &AbstractEditorDialog::rejected, this, &BindingEditor::rejected);

    m_dialog->setAttribute(Qt::WA_DeleteOnClose);
}

void BindingEditor::showWidget()
{
    prepareDialog();
    m_dialog->showWidget();
}

void BindingEditor::showWidget(int x, int y)
{
    prepareDialog();
    m_dialog->showWidget(x, y);
}

void BindingEditor::hideWidget()
{
    if (m_dialog) {
        m_dialog->unregisterAutoCompletion(); //we have to do it separately, otherwise we have an autocompletion action override
        m_dialog->close();
    }
}

QString BindingEditor::bindingValue() const
{
    if (!m_dialog)
        return {};

    return m_dialog->editorValue();
}

void BindingEditor::setBindingValue(const QString &text)
{
    if (m_dialog)
        m_dialog->setEditorValue(text);
}

void BindingEditor::setBackendValue(const QVariant &backendValue)
{
    if (!backendValue.isNull() && backendValue.isValid()) {
        m_backendValue = backendValue;
        const QObject *backendValueObj = backendValue.value<QObject*>();
        const PropertyEditorValue *propertyEditorValue = qobject_cast<const PropertyEditorValue *>(backendValueObj);
        const ModelNode node = propertyEditorValue->modelNode();

        if (node.isValid()) {
            m_backendValueType = node.metaInfo().property(propertyEditorValue->name()).propertyType();

            QString nodeId = node.id();
            if (nodeId.isEmpty())
                nodeId = node.simplifiedTypeName();

            m_targetName = nodeId + "." + propertyEditorValue->name();

            if (!m_backendValueType || m_backendValueType.isAlias()) {
                if (QmlObjectNode::isValidQmlObjectNode(node))
                    m_backendValueType = node.model()->metaInfo(
                        QmlObjectNode(node).instanceType(propertyEditorValue->name()));
            }
        }

        emit backendValueChanged();
    }
}

void BindingEditor::setModelNodeBackend(const QVariant &modelNodeBackend)
{
    if (!modelNodeBackend.isNull() && modelNodeBackend.isValid()) {
        m_modelNodeBackend = modelNodeBackend;

        const auto modelNodeBackendObject = m_modelNodeBackend.value<QObject*>();

        const auto backendObjectCasted =
                qobject_cast<const QmlDesigner::QmlModelNodeProxy *>(modelNodeBackendObject);

        if (backendObjectCasted)
            m_modelNode = backendObjectCasted->qmlObjectNode().modelNode();

        emit modelNodeBackendChanged();
    }
}

void BindingEditor::setStateModelNode(const QVariant &stateModelNode)
{
    if (stateModelNode.isValid()) {
        m_stateModelNode = stateModelNode;
        m_modelNode = m_stateModelNode.value<QmlDesigner::ModelNode>();

        if (m_modelNode.isValid())
            m_backendValueType = m_modelNode.model()->boolMetaInfo();

        emit stateModelNodeChanged();
    }
}

void BindingEditor::setStateName(const QString &name)
{
    m_targetName = name;
    m_targetName += ".when";
}

void BindingEditor::setModelNode(const ModelNode &modelNode)
{
    if (modelNode.isValid())
        m_modelNode = modelNode;
}

void BindingEditor::setBackendValueType(const NodeMetaInfo &backendValueType)
{
    m_backendValueType = backendValueType;

    emit backendValueChanged();
}

void BindingEditor::setTargetName(const QString &target)
{
    m_targetName = target;
}

namespace {
template<typename Tuple>
bool isType(const Tuple &types, const TypeName &compareType)
{
    return std::apply([&](const auto &...type) { return ((type == compareType) || ...); }, types);
}

template<typename... Tuple>
bool isType(const TypeName &first, const TypeName &second, const Tuple &...types)
{
    return ((types == first) || ...) && ((types == second) || ...);
}

bool compareTypes(const NodeMetaInfo &sourceType, const NodeMetaInfo &targetType)
{
#ifdef QDS_USE_PROJECTSTORAGE
    return targetType.isVariant() || sourceType.isVariant()
           || (targetType.isNumber() && sourceType.isNumber()) || sourceType.isBasedOn(targetType);
#else
    const TypeName source = sourceType.simplifiedTypeName();
    const TypeName target = targetType.simplifiedTypeName();

    static constexpr auto variantTypes = std::make_tuple("alias", "unknown", "variant", "var");

    return isType(variantTypes, target) || isType(variantTypes, source) || target == source
           || targetType == sourceType || isType(target, source, "double", "real", "int")
           || isType(target, source, "QColor", "color")
           || isType(target, source, "QString", "string");
#endif
}
} // namespace

void BindingEditor::prepareBindings()
{
    if (!m_modelNode.isValid() || !m_backendValueType) {
        return;
    }

    const QList<QmlDesigner::ModelNode> allNodes = m_modelNode.view()->allModelNodes();

    QList<BindingEditorDialog::BindingOption> bindings;

    for (const auto &objnode : allNodes) {
        BindingEditorDialog::BindingOption binding;
        for (const auto &property :
             MetaInfoUtils::addInflatedValueAndReferenceProperties(objnode.metaInfo().properties())) {
            const auto &propertyType = property.property.propertyType();

            if (compareTypes(m_backendValueType, propertyType)) {
                binding.properties.append(QString::fromUtf8(property.name()));
            }
        }

        //dynamic properties:
        for (const BindingProperty &bindingProperty : objnode.bindingProperties()) {
            if (bindingProperty.isValid()) {
                if (bindingProperty.isDynamic()) {
                    auto model = bindingProperty.model();
                    const auto dynamicType = model->metaInfo(bindingProperty.dynamicTypeName());
                    if (compareTypes(m_backendValueType, dynamicType)) {
                        binding.properties.append(QString::fromUtf8(bindingProperty.name()));
                    }
                }
            }
        }
        for (const VariantProperty &variantProperty : objnode.variantProperties()) {
            if (variantProperty.isValid()) {
                if (variantProperty.isDynamic()) {
                    auto model = variantProperty.model();
                    const auto dynamicType = model->metaInfo(variantProperty.dynamicTypeName());
                    if (compareTypes(m_backendValueType, dynamicType)) {
                        binding.properties.append(QString::fromUtf8(variantProperty.name()));
                    }
                }
            }
        }

        if (!binding.properties.isEmpty() && objnode.hasId()) {
            binding.item = objnode.displayName();
            bindings.append(binding);
        }
    }

    //singletons:
#ifdef QDS_USE_PROJECTSTORAGE
    if (auto model = m_modelNode.view()->model()) {
        for (const auto &metaInfo : model->singletonMetaInfos()) {
            BindingEditorDialog::BindingOption binding;

            for (const auto &property : metaInfo.properties()) {
                const auto propertyType = property.propertyType();

                if (compareTypes(m_backendValueType, propertyType)) {
                    binding.properties.append(QString::fromUtf8(property.name()));
                }
            }

            if (!binding.properties.isEmpty()) {
                binding.item = model->exportedTypeNameForMetaInfo(metaInfo).name.toQString();
                if (binding.item.size())
                    bindings.append(binding);
            }
        }
    }
#else
    if (RewriterView *rv = m_modelNode.view()->rewriterView()) {
        for (const QmlTypeData &data : rv->getQMLTypes()) {
            if (!data.typeName.isEmpty()) {
                NodeMetaInfo metaInfo = m_modelNode.view()->model()->metaInfo(data.typeName.toUtf8());

                if (metaInfo.isValid()) {
                    BindingEditorDialog::BindingOption binding;

                    for (const auto &property : metaInfo.properties()) {
                        const auto propertyType = property.propertyType();

                        if (compareTypes(m_backendValueType, propertyType)) {
                            binding.properties.append(QString::fromUtf8(property.name()));
                        }
                    }

                    if (!binding.properties.isEmpty()) {
                        binding.item = data.typeName;
                        bindings.append(binding);
                    }
                }
            }
        }
    }
#endif
    if (!bindings.isEmpty() && m_dialog)
        m_dialog->setAllBindings(bindings, m_backendValueType);
}

void BindingEditor::updateWindowName()
{
    if (m_dialog && m_backendValueType) {
        QString targetString;
#ifdef QDS_USE_PROJECTSTORAGE

        auto exportedTypeName = m_modelNode.model()->exportedTypeNameForMetaInfo(m_backendValueType);
        if (exportedTypeName.name.size()) {
            targetString = " [" + (m_targetName.isEmpty() ? QString() : (m_targetName + ": "))
                           + exportedTypeName.name.toQString() + "]";
        }
#else
        targetString = " [" + (m_targetName.isEmpty() ? QString() : (m_targetName + ": "))
                       + QString::fromUtf8(m_backendValueType.simplifiedTypeName()) + "]";
#endif

        m_dialog->setWindowTitle(m_dialog->defaultTitle() + targetString);
    }
}

QString BindingEditor::targetName() const
{
    return m_targetName;
}

QString BindingEditor::stateName() const
{
    if (m_targetName.endsWith(".when"))
        return m_targetName.chopped(5);

    return {};
}

QVariant BindingEditor::backendValue() const
{
    return m_backendValue;
}

QVariant BindingEditor::modelNodeBackend() const
{
    return m_modelNodeBackend;
}

QVariant BindingEditor::stateModelNode() const
{
    return m_stateModelNode;
}

} // QmlDesigner namespace
