/**********************************************************************
 *
 * recptconfig.cpp -- 
 * Copyright (C) 1999  The New Zealand Digital Library Project
 *
 * A component of the Greenstone digital library software
 * from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *********************************************************************/

#include "recptconfig.h"
#include "fileutil.h"
#include "cfgread.h"


#if defined(GSDL_USE_OBJECTSPACE)
#  include <ospace/std/iostream>
#  include <ospace/std/fstream>
#elif defined(GSDL_USE_IOS_H)
#  include <iostream.h>
#  include <fstream.h>
#else
#  include <iostream>
#  include <fstream>
#endif


// reads site configuration file returning true on success
// also sets gsdlhome and maxrequests 
// gsdlsite.cfg should be in same directory as library executable
bool site_cfg_read (receptionist &recpt, text_t &gsdlhome, int &maxrequests) {

  gsdlhome.clear();

  // Look for gsdlsite.cfg in same directory that executable is in.
  text_tarray cfgline;
  text_t key;

#ifdef GSDL_USE_IOS_H
  ifstream confin ("gsdlsite.cfg", ios::in | ios::nocreate);
#else
  ifstream confin ("gsdlsite.cfg", ios::in);
#endif

  if (confin) {
    while (read_cfg_line(confin, cfgline) >= 0) {
      if (cfgline.size () >= 2) {
	key = cfgline[0];
	cfgline.erase(cfgline.begin());
	
	if (key == "maxrequests") {
	  maxrequests = cfgline[0].getint();
	  if (maxrequests < 1) maxrequests = 1;
	}

	if (key == "gsdlhome")
	  gsdlhome = cfgline[0];

	// configure the receptionist
	recpt.configure (key, cfgline);
      }
    }
    confin.close ();
    return true;
  }
  return false;
}

// this version just grabs gsdlhome, returning true
// unless unable to read gsdlsite.cfg
bool site_cfg_read (text_t &gsdlhome) {

  gsdlhome.clear();

  // Look for gsdlsite.cfg in same directory that executable is in.
  text_tarray cfgline;
  text_t key;

#ifdef GSDL_USE_IOS_H
  ifstream confin ("gsdlsite.cfg", ios::in | ios::nocreate);
#else
  ifstream confin ("gsdlsite.cfg", ios::in);
#endif

  if (confin) {
    while (read_cfg_line(confin, cfgline) >= 0) {
      if (cfgline.size () >= 2) {
	if (cfgline[0] == "gsdlhome") {
	  gsdlhome = cfgline[1];
	  break;
	}
      }
    }
    return true;
    confin.close ();
  }
  return false;
}

// main_cfg_read reads both main.cfg and collect.cfg. It attempts
// to read main.cfg first so values in collect.cfg override those
// set earlier by main.cfg
bool main_cfg_read (receptionist &recpt, const text_t &gsdlhome,
		     const text_t &collection) {

  // read in the main configuration file
  bool rv = false;
  text_t key, filename;
  text_tarray cfgline;
  filename = filename_cat (gsdlhome, "etc");
  filename = filename_cat (filename, "main.cfg");
  if (file_exists (filename)) {
    char *cstr = filename.getcstr();
    
#ifdef GSDL_USE_IOS_H
    ifstream confin (cstr, ios::in | ios::nocreate);
#else
    ifstream confin (cstr, ios::in);
#endif

    delete cstr;
  
    if (confin) {
      while (read_cfg_line(confin, cfgline) >= 0) {
	if (cfgline.size () >= 2) {
	  key = cfgline[0];
	  cfgline.erase(cfgline.begin());
	
	  // configure the receptionist
	  recpt.configure (key, cfgline);
	}
      }
      confin.close ();
      rv = true;
    }
  }
  
  // Look for collect.cfg in GSDLHOME/collect/collection-name/etc directory 
  // (if this is for a particular collection), and then GSDLHOME/etc.
  if (!collection.empty()) {
    filename = filename_cat (gsdlhome, "collect");
    filename = filename_cat (filename, collection);
    filename = filename_cat (filename, "etc");
    filename = filename_cat (filename, "collect.cfg");
    if (!file_exists (filename)) {
      filename = filename_cat (gsdlhome, "etc");
      filename = filename_cat (filename, "collect.cfg");
      if (!file_exists (filename)) filename.clear();
    }

    if (!filename.empty()) {
      char *cstr = filename.getcstr();

#ifdef GSDL_USE_IOS_H
      ifstream confin (cstr, ios::in | ios::nocreate);
#else
      ifstream confin (cstr, ios::in);
#endif
      
      delete cstr;
      
      if (confin) {
	while (read_cfg_line(confin, cfgline) >= 0) {
	  if (cfgline.size () >= 2) {
	    key = cfgline[0];
	    cfgline.erase(cfgline.begin());
	    
	    // configure the receptionist
	    recpt.configure (key, cfgline);
	  }
	}
	confin.close ();
	rv = true;
      }
    }
  }
  return rv;
}