/**********************************************************************
 *
 * gsdlsitecfg.cpp -- 
 * Copyright (C) 2008  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 "gsdlsitecfg.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


class __site_configuration : public configurable {
private:
  text_t *gsdlhome;
  text_t *httpdomain;
  text_t *httpprefix;
  text_t *collection;
  text_tset *actions;
  text_tset *browsers;
  int    *maxrequests;
public:
  __site_configuration (text_t *_gsdlhome, int *_maxrequests) {
    gsdlhome = _gsdlhome;
    httpdomain = NULL;
    httpprefix = NULL;
    collection = NULL;
    actions = NULL;
    browsers = NULL;
    maxrequests = _maxrequests;
  }

  __site_configuration (text_t *_gsdlhome, text_t *_httpdomain,
                        text_t *_httpprefix) {
    gsdlhome    = _gsdlhome;
    httpdomain = _httpdomain;
    httpprefix = _httpprefix;
    collection = NULL;
    actions = NULL;
    browsers = NULL;
    maxrequests = NULL;
  }

  __site_configuration (text_t *_gsdlhome, text_t *_httpdomain,
			text_t *_httpprefix, text_t *_collection) {
    gsdlhome    = _gsdlhome;
    httpdomain = _httpdomain;
    httpprefix = _httpprefix;
    collection = _collection;
    actions = NULL;
    browsers = NULL;
    maxrequests = NULL;
  }

  __site_configuration (text_t *_httpprefix, text_tset *_actions, text_tset *_browsers) {
    gsdlhome    = NULL;
    httpdomain = NULL;
    httpprefix = _httpprefix;
    collection = NULL;
    actions = _actions;
    browsers = _browsers;
    maxrequests = NULL;
  }

  inline void configure (const text_t &key, const text_tarray &cfgline) {
    if (gsdlhome != NULL && key == "gsdlhome") {
      *gsdlhome = cfgline[0];
    }

    if (httpprefix != NULL && key == "httpprefix") {
      *httpprefix = cfgline[0];
    }

    if (httpdomain != NULL && key == "httpdomain") {
      *httpdomain = cfgline[0];
    }

    if (collection != NULL && key == "collection") {
      *collection = cfgline[0];
    } 

    if (actions != NULL && key == "actions") {
      actions->clear();
      text_tarray::const_iterator thisAction = cfgline.begin();
      text_tarray::const_iterator endAction = cfgline.end();
      while (thisAction != endAction) {
	actions->insert(*thisAction);
	++thisAction;
      }
    } 

    if (browsers != NULL && key == "browsers") {
      browsers->clear();
      text_tarray::const_iterator thisBrowser = cfgline.begin();
      text_tarray::const_iterator endBrowser = cfgline.end();
      while (thisBrowser != endBrowser) {
	browsers->insert(*thisBrowser);
	++thisBrowser;
      }
    }

    if (maxrequests != NULL && key == "maxrequests") {
      *maxrequests = cfgline[0].getint();
      if ((*maxrequests) < 1) {
	*maxrequests = 1;
      }
    }
  }
};


// 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 (configurator gsdlconfigurator, text_t &gsdlhome, int &maxrequests)
{
  __site_configuration sitecfg(&gsdlhome, &maxrequests);
  gsdlconfigurator.add_configurable(&sitecfg);

  // blank the gsdl home text
  gsdlhome.clear();

  if (gsdlconfigurator.configure("gsdlsite.cfg"))
  {
    return true;
  }

  return false;
}


// this version grabs gsdlhome, httpdomain and httpprefix, 
// returns false if it can't find all of them
bool site_cfg_read (text_t &gsdlhome, text_t &httpdomain, 
		    text_t &httpprefix)
{
  // get gsdlhome etc
  __site_configuration sitecfg(&gsdlhome, &httpdomain, &httpprefix);
  configurator gsdlconfigurator(&sitecfg);

  gsdlhome.clear();
  httpdomain.clear();
  httpprefix.clear();

  if (gsdlconfigurator.configure("gsdlsite.cfg"))
  {
    return true;
  }

  return false;
}


// this version grabs gsdlhome, httpdomain, httpprefix, collection, 
// returns false if it can't find gsdlhome, httpdomain and httpprefix
bool site_cfg_read (text_t &gsdlhome, text_t &httpdomain, 
		    text_t &httpprefix, text_t &collection)
{
  // get gsdlhome etc
  __site_configuration sitecfg(&gsdlhome, &httpdomain, &httpprefix, &collection);
  configurator gsdlconfigurator(&sitecfg);
	
  gsdlhome.clear();
  httpdomain.clear();
  httpprefix.clear();
  collection.clear();
	
  if (gsdlconfigurator.configure("gsdlsite.cfg") &&
      !gsdlhome.empty() && !httpdomain.empty() && !httpprefix.empty())
  {
    return true;
  }	

  return false;
}