#pragma once

#include <QtCore/QObject>
#include <QtCore/QJsonObject>
#include <QtWidgets/QLabel>

#include "NodeDataModel.hpp"

#include <iostream>

class DecimalData;

using QtNodes::PortType;
using QtNodes::PortIndex;
using QtNodes::NodeData;
using QtNodes::NodeDataType;
using QtNodes::NodeDataModel;
using QtNodes::NodeValidationState;

/// The model dictates the number of inputs and outputs for the Node.
/// In this example it has no logic.
class MathOperationDataModel : public NodeDataModel
{
	Q_OBJECT

public:

	virtual
		~MathOperationDataModel() {}

public:

	unsigned int
		nPorts(PortType portType) const override;

	NodeDataType
		dataType(PortType portType,
			PortIndex portIndex) const override;

	std::shared_ptr<NodeData>
		outData(PortIndex port) override;

	void
		setInData(std::shared_ptr<NodeData> data, PortIndex portIndex) override;

	QWidget*
		embeddedWidget() override { return nullptr; }

	NodeValidationState
		validationState() const override;

	QString
		validationMessage() const override;

protected:

	virtual void
		compute() = 0;

protected:

	std::weak_ptr<DecimalData> _number1;
	std::weak_ptr<DecimalData> _number2;

	std::shared_ptr<DecimalData> _result;

	NodeValidationState modelValidationState = NodeValidationState::Warning;
	QString modelValidationError = QStringLiteral("未连接或运行失败!");
};