/***************************************************************************

    source::worx xtree
    Copyright © 2024-2025 c.holzheuer
    christoph.holzheuer@gmail.com

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

***************************************************************************/


#ifndef XQMODEL_H
#define XQMODEL_H

#include <QUndoStack>
#include <QMenu>
#include <QStandardItemModel>

#include <xqsimpleclipboard.h>
#include <xqmodelsections.h>
#include <xqitemfactory.h>
#include <xqcontextmenu.h>


class XQTreeView;
class XQItem;
class XQCommand;


/**
 * @brief Abstract baseclass of all modelviews: Extends QStandardItemModel with a treeview.
 */

// might be own implementation of QAbstractItemModel, not done yet.
//using QStandardItemModel = XQSimpleItemModel;
using QStandardItemModel = QStandardItemModel;

/**
 * @brief The XQModel class: An extendend QStandardItem model
 * containing its own view.
 */

class XQModel : public QStandardItemModel
{
  Q_OBJECT

public:

  XQModel(QObject* parent = nullptr);
  virtual ~XQModel();

  XQTreeView* treeView();
  virtual void setTreeView( XQTreeView* mainView );

  QUndoStack* undoStack();
  void setUndoStack( QUndoStack* undoStack );

  QHash<int, QByteArray> roleNames() const override;

  //! create the own model structure
  virtual void initModel( const QString& modelName) = 0;

  //little helpers
  const XQItem& xqRootItem();

  XQItem&       xqItemFromIndex(const QModelIndex& index) const;
  XQItem&       xqFirstItem(int row) const;

  // was ist das?
  QString fetchNodeAttribute(int row, const QString& key );
  QString fetchNodeTagName(int row );

  // undo-/redo-able stuff

  virtual void cmdToggleSection( const QModelIndex& index );
  virtual void cmdCut( XQCommand& command );
  virtual void cmdCutUndo( XQCommand& command );
  virtual void cmdPaste( XQCommand& command );
  virtual void cmdPasteUndo( XQCommand& command );
  virtual void cmdDelete( XQCommand& command );
  virtual void cmdDeleteUndo( XQCommand& command );
  virtual void cmdNew( XQCommand& command );
  virtual void cmdNewUndo( XQCommand& command );

  // wtf!?
  bool setData(const QModelIndex& index, const QVariant& value, int role = Qt::EditRole) override
  {
    qDebug() << " --- setData: " << value.toString();
    return QStandardItemModel::setData( index, value, role );
  }

  QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override
  {
    return QStandardItemModel::data( index, role );
  }

public slots:

  virtual void onShowContextMenu(const QPoint& point);
  virtual void onActionTriggered(QAction* action);

  // handle XQCommands ( == UndoCommand )
  virtual void onCommandRedo( XQCommand& command );
  virtual void onCommandUndo( XQCommand& command );

signals:

  void xqItemCreated( XQItem* newItem );

protected:

  void addSection(const XQItemList& list, const XQNodePtr& sheetNode );

protected:

  virtual void initContextMenu() = 0;

  // __fixme: should be created from xml
  virtual void setupViewProperties();

protected:

  // das eine reference auf ein globales singleton
  XQItemFactory&    _itemFactory;
  XQSimpleClipBoard _clipBoard;
  XQModelSections   _sections;

  XQTreeView*       _treeView{};
  QUndoStack*       _undoStack{};
  XQContextMenu*    _contextMenu{};

  //! Die Modelbeschreibung
  XQNodePtr      _modelSheet{};
  //! Der eigentliche Inhalt
  XQNodePtr      _contentRoot{};

};

#endif // XQMODEL_H