source: trunk/gsdl/src/recpt/pageaction.cpp@ 793

/**********************************************************************
 *
 * pageaction.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.
 *
 * $Id: pageaction.cpp 793 1999-11-25 23:01:09Z sjboddie $
 *
 *********************************************************************/

/*
   $Log$
   Revision 1.22  1999/11/25 23:01:09  sjboddie
   now need to be able to handle it if no collection is selected

   Revision 1.21  1999/11/03 22:50:13  sjboddie
   now defaults to home page

   Revision 1.20  1999/11/01 21:58:02  sjboddie
   changes to arguments of many functions, now pass list of protocols
   instead of just that for this collection

   Revision 1.19  1999/10/19 21:59:09  sjboddie
   bug in generating "how to find information" text for about pages

   Revision 1.18  1999/10/19 03:23:44  davidb
   Collection building support through web pages
   and internal and external link handling for collection documents

   Revision 1.17  1999/10/14 23:04:44  sjboddie
   some hacks to make nzdl home page look right

   Revision 1.16  1999/10/10 08:14:09  sjboddie
   - metadata now returns mp rather than array
   - redesigned browsing support (although it's not finished so
   won't currently work ;-)

   Revision 1.15  1999/09/17 04:46:05  sjboddie
   fixed a couple of problems with 'unknown' classifier

   Revision 1.14  1999/09/07 23:08:09  rjmcnab
   Removed some compiler warnings

   Revision 1.13  1999/09/07 04:56:57  sjboddie
   added GPL notice

   Revision 1.12  1999/09/02 00:26:43  rjmcnab
   made the p cgi argument always saved in the compressed arguments

   Revision 1.11  1999/08/25 04:48:43  sjboddie
   changes to the home and about pages

   Revision 1.10  1999/08/11 23:29:43  sjboddie
   added support for html classifier (i.e. the hp argument)

   Revision 1.9  1999/08/03 03:29:47  sjboddie
   added ability to set receptionist from collect.cfg

   Revision 1.8  1999/07/30 02:24:44  sjboddie
   added collectinfo argument to some functions

   Revision 1.7  1999/06/24 05:12:24  sjboddie
   lots of small changes

   Revision 1.6  1999/06/10 00:39:16  sjboddie
   navigation bar is no longer written out for every page (it should
   be included in the _content_ macro of pages wanting to display it).

   Revision 1.5  1999/06/08 04:29:35  sjboddie
   added argsinfo to the call to check_cgiargs to make it easy to set
   args to their default if they're found to be screwed up

   Revision 1.4  1999/02/28 20:00:14  rjmcnab


   Fixed a few things.

   Revision 1.3  1999/02/25 21:58:58  rjmcnab

   Merged sources.

   Revision 1.2  1999/02/21 22:33:54  rjmcnab

   Lots of stuff :-)

   Revision 1.1  1999/02/12 02:40:17  sjboddie

   Added page action

 */

#include "OIDtools.h"
#include "pageaction.h"
#include "receptionist.h"
#include <time.h>

pageaction::pageaction () {

  recpt = NULL;

  // this action uses cgi variables "a", "p", and "hp"
  cgiarginfo arg_ainfo;
  arg_ainfo.shortname = "a";
  arg_ainfo.longname = "action";
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = "p";
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

  arg_ainfo.shortname = "p";
  arg_ainfo.longname = "page";
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = "home";
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

  arg_ainfo.shortname = "hp";
  arg_ainfo.longname = "html page";
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = "";
  arg_ainfo.savedarginfo = cgiarginfo::mustnot;
  argsinfo.addarginfo (NULL, arg_ainfo);
}

pageaction::~pageaction () {
}

bool pageaction::check_cgiargs (cgiargsinfoclass &/*argsinfo*/, cgiargsclass &/*args*/, 
                ostream &/*logout*/) {
  // don't want to check anything yet.
  return true;
}

void pageaction::get_cgihead_info (cgiargsclass &/*args*/, recptprotolistclass * /*protos*/,
                   response_t &response,text_t &response_data, 
                   ostream &/*logout*/) {
  response = content;
  response_data = "text/html";
}

void pageaction::set_homeextra_macro (displayclass &disp, recptprotolistclass *protos, 
                      ostream &logout) {

  text_t homeextra = "<center><table width=_pagewidth_><tr valign=top>\n";
  
  recptprotolistclass::iterator rprotolist_here = protos->begin();
  recptprotolistclass::iterator rprotolist_end = protos->end();
  while (rprotolist_here != rprotolist_end) {
    if ((*rprotolist_here).p != NULL) {

      text_tarray collist;
      comerror_t err;
      (*rprotolist_here).p->get_collection_list (collist, err, logout);
      if (err == noError) {
    text_tarray::iterator collist_here = collist.begin();
    text_tarray::iterator collist_end = collist.end();
    
    int row1 = 6;
    int row2 = 4;
    int count = 1;
    while (collist_here != collist_end) {

      if (*collist_here == "niupepa")
        homeextra += "<p><a href=\"_httpmusiclibrary_\">_iconmusiclibrary_</a>\n";
      
      ColInfoResponse_t cinfo;
      (*rprotolist_here).p->get_collectinfo (*collist_here, cinfo, err, logout);
      
      if (err == noError) {
        if (cinfo.isPublic && (cinfo.buildDate > 0)) {
          
          FilterResponse_t response;
          text_tset metadata;
          metadata.insert ("collectionname");
          metadata.insert ("iconcollection");
          metadata.insert ("iconcollectionsmall");
          text_t collectionname = *collist_here;
          text_t alt = collectionname;
          if (get_info ("collection", *collist_here, metadata, false, 
                (*rprotolist_here).p, response, logout)) {
        if (!response.docInfo[0].metadata["collectionname"].values[0].empty())
          alt = response.docInfo[0].metadata["collectionname"].values[0];
        
        if (!response.docInfo[0].metadata["iconcollectionsmall"].values[0].empty())
            collectionname = "<img width=150 border=1 src=\""
              + response.docInfo[0].metadata["iconcollectionsmall"].values[0]
              + "\" alt=\"" + alt + "\">";
        else if (!response.docInfo[0].metadata["iconcollection"].values[0].empty())
          collectionname = "<img width=150 border=1 src=\""
            + response.docInfo[0].metadata["iconcollection"].values[0]
            + "\" alt=\"" + alt + "\">";
        else collectionname = alt;
          }
        
          if ((count == 1) || (count == (row1+1)) || (count == ((row1+row2)+1))) 
        homeextra += "<td align=center>";
          else homeextra += "<p>";
          text_t link = "<a href=\"_gwcgi_?a=p&p=about&c=" + *collist_here + "\">";
          if (*collist_here == "chinese")
        link = "<a href=\"_gwcgi_?a=p&p=about&l=zh&nw=u&c=" + *collist_here + "\">";

          if (!cinfo.receptionist.empty()) 
        link = "<a href=\"" + cinfo.receptionist + "?a=p&p=about&c=" 
          + *collist_here + "\">";
          
          homeextra += link + collectionname + "</a>\n";
          
          if ((count == row1) || (count == (row1+row2))) 
        homeextra += "</td>";
          
          count ++;
        }
      }
      
      collist_here ++;
    }
    homeextra += "</tr></table></center>\n";
    disp.setmacro ("homeextra", "home", homeextra); 
      }
    }
    rprotolist_here ++;
  }
}

void pageaction::define_internal_macros (displayclass &disp, cgiargsclass &args, 
                     recptprotolistclass *protos, ostream &logout) {

  // define_internal_macros sets the following macros:

  // if page is "home"
  // _homeextra_           this is the list of available collections and collection info
  //                       to be displayed on the home page


  // if page is "about"
  // _numdocs_             the number of documents in the collection

  // _builddate_           the date last built

  // _textbrowseoptions_   the 'how to find information' text in the about and help pages

  // _numbrowseoptions_    the number of browsing options 


  // if page is "help"
  // _textbrowseoptions_   the 'how to find information' text in the about and help pages

  // _numbrowseoptions_    the number of browsing options 

  
  text_t &arg_p = args["p"];

  recptproto* collectproto = protos->getrecptproto (args["c"], logout);
  if (collectproto != NULL) {
    comerror_t err;
    ColInfoResponse_t cinfo;
    collectproto->get_collectinfo (args["c"], cinfo, err, logout);
  
    disp.setmacro ("numdocs", "Global", cinfo.numDocs);
    unsigned long current_time = time(NULL);
    unsigned long builddate = (current_time - cinfo.buildDate) / 86400;
    disp.setmacro ("builddate", "Global", builddate);
  }

  if (arg_p == "home") set_homeextra_macro (disp, protos, logout);

  else if (arg_p == "about" || arg_p == "help") {
    if (collectproto == NULL) return;
    
    // _textbrowseoptions_ and _numbrowseoptions_
    
    FilterResponse_t response;
    text_tset metadata;
    metadata.insert ("Title");
    bool getParents = false;
    get_children ("", args["c"], metadata, getParents, collectproto, response, logout);

    disp.setmacro ("numbrowseoptions", "help", response.docInfo.size()+1);

    ResultDocInfo_tarray::iterator here = response.docInfo.begin();
    ResultDocInfo_tarray::iterator end = response.docInfo.end();

    // we're assuming that we've always got a search button
    text_t shorttext = "<ul><li>_textSearchshort_\n";
    text_t longtext = "_textSearchlong_";

    while (here != end) {
      text_t title = (*here).metadata["Title"].values[0];

      text_t stext, ltext;
      disp.expandstring ("help", "_text" + title + "short_", stext);
      if (stext == ("_text" + title + "short_")) {
    shorttext += "<li>_help:textdefaultshorttext_";
    longtext += "_help:textdefaultlongtext_";
      } else {
    shorttext += "<li>" + stext;
    longtext += "_help:text" + title + "long_";
      }

      here ++;
    }
    shorttext += "</ul>\n";
    disp.setmacro ("textbrowseoptions", "help", shorttext + longtext);
  }
}

bool pageaction::do_action (cgiargsclass &args, recptprotolistclass * /*protos*/, 
                browsermapclass * /*browsers*/, displayclass &disp, 
                outconvertclass &outconvert, ostream &textout, 
                ostream &/*logout*/) {

  text_t &arg_p = args["p"];

  textout << outconvert << disp << ("_" + arg_p + ":header_\n")
      << ("_" + arg_p + ":content_\n")
      << ("_" + arg_p + ":footer_\n");

  return true;
}