// class html implementation.

#ifndef s_html_CXX
#define s_html_CXX

#include <fstream>
#include "html.h"
#include "s_chat.h"
#include "s_mutx.h"

using namespace std;

html::html( )
{
  set_name( s_conf::get
              ().get_val( "HTMLTEMP" ) );
  pthread_mutex_init( &mut_map_vals, NULL );
}

html::~html( )
{
  pthread_mutex_destroy( &mut_map_vals );
}

void
html::clear_cache( )
{
  pthread_mutex_lock  ( &mut_map_vals );
  clear_vals();
  pthread_mutex_unlock( &mut_map_vals );
}

string
html::parse( map_string &map_params )
{
  string s_file = map_params["request"];

  // check if s_file is in the container.
  pthread_mutex_lock  ( &mut_map_vals );
  string s_templ = get_val( s_file );
  pthread_mutex_unlock( &mut_map_vals );

  // if not, read file.
  if ( s_templ.empty() )
  {
    auto string   s_path  = get_name();
    auto ifstream fs_templ( s_path.append( s_file ).c_str(), ios::binary );

    if ( ! fs_templ )
    {

      cerr << "File not found: " << s_file << endl;
      if(map_params["request"]==s_conf::get
            ().get_val( "NOTFOUND"  ))
          return "";

      map_params["request"] = s_conf::get
                                ().get_val( "NOTFOUND" );
      return parse( map_params );

    }

    auto char c_buf;
    while( !fs_templ.eof() )
    {
      fs_templ.get( c_buf );
      s_templ+=c_buf;
    }

    fs_templ.close();

#ifdef VERBOSE

    pthread_mutex_lock  ( &s_mutx::get
                            ().mut_stdout );
    cout << TECACHE << s_path << endl;
    pthread_mutex_unlock( &s_mutx::get
                            ().mut_stdout );
#endif

    // cache file.
    pthread_mutex_lock  ( &mut_map_vals );
    map_vals[ s_file ] = s_templ;
    pthread_mutex_unlock( &mut_map_vals );
  }

  // find %%KEY%% token and substituate those.
  auto unsigned int pos[2];
  pos[0] = pos[1] = 0;

  do
  {
    pos[0] = s_templ.find( "%%", pos[1] );

    if ( pos[0] == string::npos )
      break;

    pos[0] += 2;
    pos[1]  = s_templ.find( "%%", pos[0] );

    if ( pos[0] == string::npos )
      break;

    // get key and val.
    auto string s_key = s_templ.substr( pos[0], pos[1]-pos[0] );
    auto string s_val = s_conf::get
                          ().get_val( s_key );

    // if s_val is empty use map_params.
    if ( s_val.empty() )
      s_val = map_params[ s_key ];

    // substituate key with val.
    s_templ.replace( pos[0]-2, pos[1]-pos[0]+4, s_val );

    // calculate the string displacement.
    auto int i_dif = s_val.length() - ( pos[1] - pos[0] + 4);

    pos[1] += 2 + i_dif;

  }
  while( true );

  return s_templ;
}

void
html::online_list( user *p_user, map_string &map_params )
{
  // prepare user_list.
  string s_list     ( ""     );
  string s_seperator( "<br>" );

  p_user->get_p_room()->get_user_list( s_list, s_seperator );

  // use the collected data as a message in html-templates.
  map_params["MESSAGE"] = s_list;

  // renew the timestamp.
  p_user->renew_stamp();

  // send a ping to the client chat stream.
  p_user->msg_post( new string("\n") );
}

#endif