//  This may look like C code, but it is really -*- C++ -*-

//  ------------------------------------------------------------------
//  The Goldware Library
//  Copyright (C) 1990-1999 Odinn Sorensen
//  ------------------------------------------------------------------
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Library General Public
//  License as published by the Free Software Foundation; either
//  version 2 of the License, or (at your option) any later version.
//
//  This library 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
//  Library General Public License for more details.
//
//  You should have received a copy of the GNU Library 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
//  ------------------------------------------------------------------
//  $Id$
//  ------------------------------------------------------------------
//  Ezycom msgbase handling
//  ------------------------------------------------------------------

#include <gdbgtrk.h>
#include <gmoezyc.h>


//  ------------------------------------------------------------------

void EzycomArea::raw_scan(int __keep_index) {

  GFTRK("EzycomRawScan");

  int _wasopen = isopen;
  if(not _wasopen) {
    if(ispacked()) {
      const char* newpath = Unpack(path());
      if(newpath == NULL)
        packed(false);
      set_real_path(newpath ? newpath : path());
    }
    isopen++;
    data_open();
    test_raw_open(__LINE__);
  }

  Msgn->Resize((uint)(filelength(data->fhhdr) / sizeof(EzycHdr)));

  for(uint _count=0; _count<Msgn->Count(); _count++)
    Msgn->at(_count) = _count + 1;

  int _fh = ::sopen(AddPath(wide->userbasepath, "LASTCOMB.BBS"), O_RDONLY|O_BINARY, SH_DENYNO, S_STDRD);
  if(_fh != -1) {
    word _lastread;
    lseekset(_fh, wide->userno * (wide->maxmess / 16) * sizeof(EzycLast) +
      (((board() - 1) / 16) * sizeof(EzycLast) + sizeof(word)) +
      (board()-1) % 16 * sizeof(word)
    );
    read(_fh, &_lastread, sizeof(word));
    if(_lastread)
      _lastread--;

    uint _active = Msgn->Count();
    uint _count = 1;
    uint32_t* _msgnoptr = Msgn->tag;
    uint _lastread_reln = 0;
    uint _firstmsgno = 0;
    uint _lastmsgno = 0;
    uint _lastreadfound = 0;

    if(_active) {

      _firstmsgno = Msgn->at(0);
      _lastmsgno = Msgn->at(_active-1);

      while(1) {

        // Set lastread pointer
        if((*_msgnoptr >= _lastread) and (_lastread_reln == 0)) {
          _lastreadfound = *_msgnoptr;
          _lastread_reln = _count - (*_msgnoptr != _lastread ? 1 : 0);
          break;
        }
        if((++_count) > _active)
          break;
        _msgnoptr++;
      }
    }

    // If the exact lastread was not found
    if(_active and (_lastreadfound != _lastread)) {

      // Higher than highest or lower than lowest?
      if(_lastread > _lastmsgno)
        _lastread_reln = _active;
      else if(_lastread < _firstmsgno)
        _lastread_reln = 0;
    }

    // Update area data
    lastread = _lastread_reln;
    lastreadentry = _lastreadfound;

    ::close(_fh);
  }

  if(not __keep_index)
    Msgn->Reset();
  
  if(not _wasopen) {
    raw_close();
    data_close();
    if(ispacked()) {
      CleanUnpacked(real_path());
    }
    isopen--;
  }

  GFTRK(0);
}


//  ------------------------------------------------------------------

void EzycomArea::scan() {

  GFTRK("EzycomScan");

  raw_scan(true);

  GFTRK(0);
}


//  ------------------------------------------------------------------

void EzycomArea::scan_area() {

  GFTRK("EzycomScanArea");

  raw_scan(false);

  GFTRK(0);
}


//  ------------------------------------------------------------------

void EzycomArea::scan_area_pm() {

  GFTRK("EzycomScanArea*M");

  scan_area();

  GFTRK(0);
}


//  ------------------------------------------------------------------