// src/canvas/PluginItemFactory.h
#pragma once

#include "export.hpp"
#include "functionModelItem/graphicsFunctionModelItem.h"
#include <QObject>

class PluginManager;
class ICanvasItem;

class DIAGRAM_DESIGNER_PUBLIC PluginItemFactory : public QObject
{
    Q_OBJECT

public:
    static PluginItemFactory* instance();

    // 删除拷贝构造函数和赋值运算符
    PluginItemFactory(const PluginItemFactory&) = delete;
    PluginItemFactory& operator=(const PluginItemFactory&) = delete;

    // 设置插件管理器
    void setPluginManager(PluginManager *manager);
    PluginManager* pluginManager() const;

    // 创建图形项
    GraphicsFunctionModelItem* createItem(const QString &shapeId,
                                          QGraphicsItem *parent = nullptr);

    // 从插件项创建图形项
    GraphicsFunctionModelItem* createItemFromPlugin(ICanvasItem *pluginItem,
                                                    QGraphicsItem *parent = nullptr);

signals:
    void itemCreated(GraphicsFunctionModelItem *item);
    void creationFailed(const QString &shapeId, const QString &error);

private:
    // 内联定义Private类
    class Private
    {
    public:
        PluginManager *pluginManager = nullptr;

        Private() = default;
        ~Private() = default;
    };

    explicit PluginItemFactory(QObject *parent = nullptr);
    ~PluginItemFactory() = default;  // QScopedPointer自动管理内存

    QScopedPointer<Private> d;
};