#ifndef CONFIG_MGR_H
#define CONFIG_MGR_H
#include <memory>
#include <vector>
#include "cardbase.h"
#include <QDrag>
#include <QMimeData>
#include <QDragEnterEvent>
#include <QDebug>
#include <QListWidget>
#include <QStandardItemModel>   //数据模型类
#include <QTreeView>

class DraggableListWidget : public QListWidget {
public:
    DraggableListWidget(QWidget *parent = nullptr) : QListWidget(parent) {
        setDragEnabled(true);
    }

protected:
    void startDrag(Qt::DropActions supportedActions) override {
        QListWidgetItem *item = currentItem();
        if (!item) return;

        QMimeData *mimeData = new QMimeData;

        // 获取显示文本和 UserRole 数据
        QString visibleText = item->text();
        QString userData = item->data(Qt::UserRole).toString();

        // 使用 QDataStream 打包数据
        QByteArray data;
        QDataStream stream(&data, QIODevice::WriteOnly);
        stream << visibleText << userData;  // 包含显示文本和 UserRole 数据

        mimeData->setData("application/x-custom", data);  // 设置自定义 MIME 数据

        QDrag *drag = new QDrag(this);
        drag->setMimeData(mimeData);
        drag->exec(Qt::CopyAction);
    }
};
class DropTreeModel : public QStandardItemModel {
public:
    using QStandardItemModel::QStandardItemModel;

    QStringList mimeTypes() const override {
        // 支持自定义类型和 QListWidget 默认类型
        return { "application/x-custom", "application/x-qabstractitemmodeldatalist" };
    }

    bool dropMimeData(const QMimeData *data, Qt::DropAction action,
                          int row, int column, const QModelIndex &parent) override {
            QStandardItem *parentItem = this->itemFromIndex(parent);
            if (!parentItem)
                parentItem = this->invisibleRootItem();

            if (data->hasFormat("application/x-custom")) {
                QByteArray rawData = data->data("application/x-custom");
                QString customText = QString::fromUtf8(rawData);

                QStandardItem *newItem = new QStandardItem(customText);
                newItem->setData(customText, Qt::UserRole);  // 假设 data 也就是内容
                newItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable |
                                  Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled);

                if (row < 0)
                    parentItem->appendRow(newItem);
                else
                    parentItem->insertRow(row, newItem);

                return true;
            }

            if (data->hasFormat("application/x-qabstractitemmodeldatalist")) {
                QByteArray encoded = data->data("application/x-qabstractitemmodeldatalist");
                QDataStream stream(&encoded, QIODevice::ReadOnly);

                while (!stream.atEnd()) {
                    int r, c;
                    QMap<int, QVariant> roleDataMap;
                    stream >> r >> c >> roleDataMap;

                    QString text = roleDataMap.value(Qt::DisplayRole).toString();
                    QVariant userData = roleDataMap.value(Qt::UserRole);

                    QStandardItem *newItem = new QStandardItem(text);
                    newItem->setData(userData, Qt::UserRole);  // 保留附加数据
                    newItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable |
                                      Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled);

                    if (row < 0)
                        parentItem->appendRow(newItem);
                    else
                        parentItem->insertRow(row, newItem);
                }

                return true;
            }

            return false;
        }

    Qt::DropActions supportedDropActions() const override {
            return Qt::CopyAction | Qt::MoveAction;
    }
};
class ConfigMgr {
  private:
    static ConfigMgr *instance;
    ConfigMgr() {
        for (int i = 0; i < SLOT_NUM; ++i) {
            card_type_[i] = kCardNone;
        }
    }
  public:
    int card_type_[15];
    static ConfigMgr *Instance() {
        if (instance == nullptr) {
            instance = new ConfigMgr();
        }
        return instance;
    }
    ~ConfigMgr();
    void Save(QString & file_path);
    void Load(QString filename);
    std::shared_ptr<CardBase> GetSlotPtr(int slot);//1-15
    void AddCard(std::shared_ptr<CardBase> ptr);
    void RemoveCard(std::shared_ptr<CardBase> ptr);
  private:
    QString filename_;

    std::vector<std::shared_ptr<CardBase>> cards_;
};

#endif // CONFIG_MGR_H