//  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
//  ------------------------------------------------------------------
//  $Id$
//  ------------------------------------------------------------------
//  Read areas from Maximus 3.xx
//  ------------------------------------------------------------------

#include <cstdio>
#include <cstdlib>
#include <gfilutil.h>
#include <gmemdbg.h>
#include <gstrall.h>
#undef GCFG_NOMAXIMUS
#include <gedacfg.h>
#include <gs_max3.h>


//  ------------------------------------------------------------------
//  Read areas from Maximus 3.xx

void gareafile::ReadMaximus3(char* mxpath, char* areafile, char* options) {

  FILE* fp;
  AreaCfg aa;
  Path prmfile;

  MakePathname(prmfile, mxpath, "max.prm");

  fp = fsopen(prmfile, "rb", sharemode);
  if(fp) {

    if(not quiet)
      std::cout << "* Reading " << areafile << std::endl;

    m_pointers* prmp = (m_pointers*)throw_calloc(1, sizeof(m_pointers));
    m_pointers& prm = *prmp;
    fread(prmp, sizeof(m_pointers), 1, fp);
    long heapsz = fsize(fp) - prm.heap_offset;
    char* offsets = (char*)throw_calloc(1, (uint)heapsz);
    fread(offsets, (uint)heapsz, 1, fp);
    fclose(fp);

    Path userfile;
    strxmerge(userfile, sizeof(Path), PRM(user_file), ".bbs", NULL);
    CfgSquishuserpath(userfile);

    strcpy(stpcpy(areafile, PRM(marea_name)), ".dat");
    MapPath(areafile);

    fp = fsopen(areafile, "rb", sharemode);
    if(fp) {
      setvbuf(fp, NULL, _IOFBF, 32000);

      if(not quiet)
        std::cout << "* Reading " << areafile << std::endl;

      long areasize = fsize(fp)-4;

      dword marea_id;
      fread(&marea_id, sizeof(dword), 1, fp);
      if(marea_id == MAREA_ID) {

        int arearecsize = 1024;
        char* arearec = (char*)throw_malloc(arearecsize);
        _msgarea* area = (_msgarea*)arearec;

        while(areasize > 0) {

          // Get the record sizes
          fread(arearec, 6, 1, fp);

          // Expand the allocation if necessary
          int needsize = area->cbArea + (area->num_override*sizeof(_ovride)) + area->cbHeap;
          if(needsize > arearecsize) {
            arearecsize = needsize;
            arearec = (char*)throw_realloc(arearec, arearecsize);
            area = (_msgarea*)arearec;
          }

          // Get the rest of this record
          fread(arearec+6, needsize-6, 1, fp);
          areasize -= needsize;

          // Setup zstr heap pointer
          char* zstrheap = arearec + (needsize - area->cbHeap);
          #define ZSTR(s) (zstrheap+area->s)

          if(area->attribs & MA_DIVBEGIN)
            continue;

          if(strblank(ZSTR(path)))
            continue;

          aa.reset();
          switch(area->type) {
            case MSGTYPE_SQUISH:
              aa.msgbase = GMB_SQUISH;
              break;
            case MSGTYPE_SDM:
              aa.msgbase = fidomsgtype;
              break;
            default:
              continue;
          }

          Path apath;
          MakePathname(apath, mxpath, ZSTR(path));
          aa.setpath(apath);

          aa.aka = CAST(ftn_addr, area->primary);
          aa.setdesc(*ZSTR(descript) ? ZSTR(descript) : ZSTR(name));
          aa.setechoid(ZSTR(echo_tag));
          aa.setorigin(ZSTR(origin));
          if(area->attribs & (MA_ECHO|MA_CONF)) {
            aa.type = GMB_ECHO;
            aa.attr = attribsecho;
          }
          else if(area->attribs & MA_NET) {
            aa.type = GMB_NET;
            aa.attr = attribsnet;
          }
          else {
            aa.type = GMB_LOCAL;
            aa.attr = attribslocal;
          }

          if(area->attribs & MA_READONLY)
            aa.attr.r_o1();

          AddNewArea(aa);
        }

        throw_free(arearec);

        fclose(fp);
      }
    }

    throw_free(offsets);
    throw_free(prmp);
  }
}


//  ------------------------------------------------------------------
//  Read areas from Maximus BBS

void gareafile::ReadMaximus(char* tag) {

  char options[80];
  int is_maximus3 = false;
  Path maximuspath, mxpath, areafile, path;
  char* ptr;

  *maximuspath = NUL;
  char* mptr = getenv("MAXIMUS");
  if(mptr)
    extractdirname(maximuspath, mptr);

  *mxpath = NUL;
  ptr = maximuspath;
  if(ptr)
    AddBackslash(strcpy(mxpath, ptr));
  else
    strcpy(mxpath, areapath);

  // Get the path or filename from the parameters
  *path = NUL;
  strcpy(options, tag);
  ptr = strtok(tag, " \t");
  while(ptr) {
    if(*ptr != '-') {
      AddBackslash(strcpy(path, ptr));
      break;
    }
    ptr = strtok(NULL, " \t");
  }

  // If no path or file was given, try the env.var
  if(*path == NUL) {
    ptr = maximuspath;
    if(ptr)
      AddBackslash(strcpy(path, ptr));
    else
      strcpy(path, areapath);
  }

  // Is it a directory?
  if(is_dir(path)) {
    // Yes, so we use it
    strcpy(mxpath, path);
    MakePathname(areafile, mxpath, "marea.dat");
    if(fexist(areafile))
      is_maximus3 = true;
    else
      MakePathname(areafile, mxpath, "area.dat");
  } // Is it a file?
  else if(fexist(path)) {
    // Yes, so we split it up to get the path
    strcpy(areafile, path);
    extractdirname(mxpath, path);
  }
  else {
    // Nonsense path or file given, so use defaults. (We ought to warn, but we are lazy..)
    ptr = maximuspath;
    if(ptr)
      AddBackslash(strcpy(mxpath, ptr));
    else
      strcpy(mxpath, areapath);
    MakePathname(areafile, mxpath, "marea.dat");
    if(fexist(areafile))
      is_maximus3 = true;
    else
      MakePathname(areafile, mxpath, "area.dat");
  }

  CfgSquishuserpath(mxpath);

  if(is_maximus3)
    ReadMaximus3(mxpath, areafile, options);
}


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