#ifndef MUDLET_LUAINTERFACE_H
#define MUDLET_LUAINTERFACE_H

/***************************************************************************
 *   Copyright (C) 2013 by Chris Mitchell                                  *
 *   Copyright (C) 2014 by Ahmed Charles - acharles@outlook.com            *
 *   Copyright (C) 2020, 2023 by Stephen Lyons - slysven@virginmedia.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.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/


#include "TVar.h"

#include <QScopedPointer>
#include <QSet>

#include <utility>

extern "C" {
#if defined(INCLUDE_VERSIONED_LUA_HEADERS)
#include <lua5.1/lua.h>
#else
#include <lua.h>
#endif
}


class Host;
class TLuaInterpreter;
class VarUnit;

class QTreeWidgetItem;


class LuaInterface
{
public:
    explicit LuaInterface(lua_State*);
    ~LuaInterface();
    void iterateTable(lua_State*, int, TVar*, bool);
    void getVars(bool);
    QStringList varName(TVar* var);
    QList<TVar*> varOrder(TVar* var);
    QString getValue(TVar*);
    bool loadKey(lua_State*, TVar*);
    bool loadValue(lua_State*, TVar*, int);
    bool setCValue(QList<TVar*>);
    bool setValue(TVar*);
    void deleteVar(TVar*);
    void renameCVar(QList<TVar*>);
    void renameVar(TVar*);
    void createVar(TVar*);
    VarUnit* getVarUnit();
    bool loadVar(TVar* var);
    bool reparentCVariable(TVar* from, TVar* to, TVar* curVar);
    bool reparentVariable(QTreeWidgetItem*, QTreeWidgetItem*, QTreeWidgetItem*);
    std::pair<bool, QString> validMove(QTreeWidgetItem*);
    void getAllChildren(TVar* var, QList<TVar*>* list);
    lua_State* getState();
    static int onPanic(lua_State*);

private:
    int depth = 0;
    lua_State* mL;
    QSet<TVar> hiddenVars;
    QScopedPointer<VarUnit> varUnit;
    QList<int> lrefs;
};

#endif // MUDLET_LUAINTERFACE_H
