/******************************************************************************
**  libDXFrw - Library to read/write DXF files (ascii & binary)              **
**                                                                           **
**  Copyright (C) 2016-2022 A. Stebich (librecad@mail.lordofbikes.de)        **
**  Copyright (C) 2011-2015 José F. Soriano, rallazz@gmail.com               **
**                                                                           **
**  This library is free software, licensed 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.  **
**  You should have received a copy of the GNU General Public License        **
**  along with this program.  If not, see <http://www.gnu.org/licenses/>.    **
******************************************************************************/

#ifndef DRW_HEADER_H
#define DRW_HEADER_H


#include <map>
#include "drw_base.h"

class dxfReader;
class dxfWriter;

#define SETHDRFRIENDS  friend class dxfRW;

//! Class to handle header entries
/*!
*  Class to handle header vars, to read iterate over "std::map vars"
*  to write add a DRW_Variant* into "std::map vars" (do not delete it, are cleared in dtor)
*  or use add* helper functions.
*  @author Rallaz
*/
class DRW_Header {
    SETHDRFRIENDS
public:
    DRW_Header();

    ~DRW_Header() {
        clearVars();
    }

    DRW_Header(const DRW_Header& h)
        : vars(),
          comments(h.comments),
          name(),
          curr(nullptr),
          version(h.version),
          linetypeCtrl(),
          layerCtrl(),
          styleCtrl(),
          dimstyleCtrl(),
          appidCtrl(),
          blockCtrl(),
          viewCtrl(),
          ucsCtrl(),
          vportCtrl(),
          vpEntHeaderCtrl()
    {
        for (auto it=h.vars.begin(); it!=h.vars.end(); ++it)
        {
            this->vars[it->first] = new DRW_Variant( *(it->second) );
        }
    }
    DRW_Header& operator=(const DRW_Header &h)
    {
       if(this != &h)
       {
           clearVars();
           this->version = h.version;
           this->comments = h.comments;
           for (auto it=h.vars.begin(); it!=h.vars.end(); ++it)
           {
               this->vars[it->first] = new DRW_Variant( *(it->second) );
           }
       }
       return *this;
    }

    void addDouble(std::string key, double value, int code);
    void addInt(std::string key, int value, int code);
    void addStr(std::string key, const std::string &value, int code);
    void addCoord(std::string key, const DRW_Coord &value, int code);
    std::string getComments() const {return comments;}
    void write(dxfWriter *writer, DRW::Version ver);
    void addComment(const std::string &c);

protected:
    bool parseCode(int code, dxfReader *reader);
private:
    bool getDouble(const std::string &key, double *varDouble);
    bool getInt(const std::string &key, int *varInt);
    bool getStr(const std::string &key, std::string *varStr);
    bool getCoord(const std::string &key, DRW_Coord *varCoord);
    void clearVars()
    {
        for (auto it=vars.begin(); it!=vars.end(); ++it)
        {
            delete it->second;
        }

        vars.clear();
    }

public:
    std::unordered_map<std::string,DRW_Variant*> vars;
private:
    std::string comments;
    std::string name;
    DRW_Variant* curr {nullptr};
    int version; //to use on read

    duint32 linetypeCtrl;
    duint32 layerCtrl;
    duint32 styleCtrl;
    duint32 dimstyleCtrl;
    duint32 appidCtrl;
    duint32 blockCtrl;
    duint32 viewCtrl;
    duint32 ucsCtrl;
    duint32 vportCtrl;
    duint32 vpEntHeaderCtrl;
};

#endif

// EOF