#ifndef LIBINTERFACE_H
#define LIBINTERFACE_H

#include "browse.h"
#include "queryinfo.h"
#include "mgsearch.h"
#include "display.h"
#include "gdbmclass.h"

#ifdef __GNUG__
#  include <iostream.h>
#  include <map>
#else
#  ifndef USE_OBJECTSPACE
#    include <iostream>
#  else
#    include <ospace\std\iostream>
#    include <ospace\std\map>
#  endif
#endif

#include "cgiargs.h"

// This is the precedence given to various parameters 
// by the display class - note that at present language
// is excluded but will be required for multi-language
// collections
#define MACROPRECEDENCE "style,collection,queryversion,version"


// errors related to this module
#define LI_NOERROR            0
#define LI_LOADDATABASEFAILED 1



class libinterface
{
public:
  libinterface ();
  virtual ~libinterface() {}

  // setgsdlhome will set the macros, gdbm, index, and text homes
  void setgsdlhome (const text_t &thegsdlhome);

  void setmacroshome (const text_t &themacroshome);
  void setgdbmhome (const text_t &thegdbmhome);
  void setindexhome (const text_t &theindexhome);

  void sethttpprefix (const text_t &thehttpprefix);
  void setgwcgi (const text_t &thegwcgi);

  // init should be called after the various homes are set,
  // it returns 'false' on failure and 'true' on success
  bool init ();
  
  // examine the cgi arguments and create the appropriate page, 
  // outputing the page to textout and any debug information to logout
  //
  // returns LI_NOERROR on success, LI_LOADDATABASEFAILED on failure
  virtual int getpage (const text_t &argstr, ostream &textout, ostream &logout);
  
  // returns the compressed arguments for the last getpage
  const text_t &getlastcomparg() {return lastcomparg;}

protected:
  text_t gsdlhome;
  text_t macroshome;
  text_t gdbmhome;
  text_t indexhome;

  text_t books;
  text_t hrefs;
  text_t titles;
  vector<text_t> bookarr;
  vector<text_t> hrefarr;
  vector<text_t> titlearr;
  int numbooks;

  text_t default_index;

  text_t httpprefix;
  text_t gwcgi;
  text_t quotedstring;

  text_t lastcomparg;

  gdbmclass gdbm;
  outconvertclass text_t2ascii;
  displayclass disp;


  browseclass *browse;
  mgsearchclass search;
  
  virtual void get_arg_config (text_t &argconfigstr);
  text_t::iterator get_next_config_arg (text_t::iterator first, text_t::iterator last,
					text_t &argname, text_t &defaultvalue, bool &longarg);

  virtual text_t get_compressed_args (cgiargsclass &args);
  virtual void expand_compressed_args (cgiargsclass &args);
  virtual void add_default_args (cgiargsclass &args);
  virtual void check_args (cgiargsclass &args);

  virtual void define_general_macros (cgiargsclass &args, ostream &logout);
  virtual void prepare_page (cgiargsclass &args, ostream &logout);


  virtual void set_query_params (cgiargsclass &args, queryparamclass &queryparams);
  virtual void define_query_macros (cgiargsclass &args, 
				    queryparamclass &queryparams,
				    queryresultsclass &queryresults, 
				    ostream &logout);
  virtual void docLinks (cgiargsclass &args, queryresultsclass &queryresults, 
			 ostream &logout);

  virtual int query_action (cgiargsclass &args, ostream &textout, ostream &logout);
  virtual void browse_action (cgiargsclass &args, ostream &textout, ostream &logout);
  virtual void document_action (cgiargsclass &args, ostream &textout, ostream &logout);
  virtual void page_action (cgiargsclass &args, ostream &textout, ostream &logout);
  virtual void auxiliary_action (cgiargsclass &args, ostream &textout, ostream &logout);
  
  virtual void displayresults (cgiargsclass &args, ostream &textout, ostream &logout,
			       queryresultsclass &queryresults);

  virtual void define_pref_macros (cgiargsclass &args, ostream &logout);
  virtual int do_query(cgiargsclass &args, queryparamclass &queryparams, 
			queryresultsclass &queryresults, ostream &logout);
  virtual void highlighttext(vector<text_t> &termvars, ostream &textout, 
			     ostream &logout, text_t &text);
  void libinterface::format_querystring (text_t &querystring);



  virtual void set_default_index(void) {}
  virtual text_t get_collection_name(void) {return "";}
  virtual void assemble_index (cgiargsclass &args, text_t &index) {}
  virtual void define_collection_macros (cgiargsclass &args, ostream &logout) {}
  virtual bool collection_init(const text_t &collection) {return true;}
  virtual void displaydocsummary (cgiargsclass &args, ostream &textout,
                                  ostream &logout, queryresultsclass &queryresults,
								  int resultnum) {}


};

#endif