/*:*
 *: File: ./src/data/data_base.cpp
 *: 
 *: yChat; Homepage: ychat.buetow.org; Version 0.9.0-CURRENT
 *: 
 *: Copyright (C) 2003 Paul C. Buetow, Volker Richter
 *: Copyright (C) 2004 Paul C. Buetow
 *: Copyright (C) 2005 EXA Digital Solutions GbR
 *: Copyright (C) 2006, 2007 Paul C. Buetow
 *: 
 *: 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *:*/
#include "data_base.h"

#ifdef DATABASE
#ifndef DATA_BASE_CPP
#define DATA_BASE_CPP

using namespace std;

data_base::data_base( )
{

  vector<string> vec_keys = *wrap::CONF->get_key_vector();
  vector<string>::iterator iter;

  // Reads all DATA_ elements of conf.txt!
  for ( iter = vec_keys.begin(); iter != vec_keys.end(); iter++ )
  {
    if ( iter->length() > 20
         && iter->compare(0, 19, "chat.database.mysql") == 0
         && iter->find(".descr") == string::npos )
    {
      vector<string> vec_tokens;
      string s_element = wrap::CONF->get_elem(*iter);
      unsigned i_pos = 0;

      for ( bool b_find = 1; b_find; )
      {
        i_pos = s_element.find_first_of( " ", 0 );

        if ( i_pos != string::npos )
        {
          vec_tokens.push_back( s_element.substr(0, i_pos) );
          s_element = s_element.substr( i_pos+1 );
        }
        else
        {
          vec_tokens.push_back( s_element );
          b_find = 0;
        }
      }

      string s_mysqlquery = iter->substr(20);
      wrap::system_message(MYSQLQ2 + s_mysqlquery);
      map_queries[s_mysqlquery] = vec_tokens;
    }
  }
}

void data_base::init_connections()
{
  int i_min_con = tool::string2int( wrap::CONF->get_elem("chat.database.mincon") ),
                  i_max_con = tool::string2int( wrap::CONF->get_elem("chat.database.maxcon") );

  wrap::system_message(DATAIN0 + tool::int2string(i_max_con));
  wrap::system_message(DATAIN1 + tool::int2string(i_min_con));

  for ( int i = 0; i < i_min_con && i < i_max_con; i++ )
    push_back( new con() );
}

data_base::~data_base()
{}

hashmap<string>
data_base::select_user_data( string s_user, string s_query)
{
  print_query( DATAQUE + s_query );
  hashmap<string> map_ret;
  return map_ret;
}

void
data_base::insert_user_data( string s_user, string s_query, hashmap<string> insert_map )
{
  print_query( DATAQUE + s_query );
}


void
data_base::update_user_data( string s_user, string s_query, hashmap<string> update_map )
{
  print_query( DATAQUE + s_query );
}

void
data_base::print_query( string s_query )
{
#ifdef DATA_PRINT_QUERIES
  print_query_( s_query );
#endif
}

#ifdef DATA_PRINT_QUERIES
void
data_base::print_query_( string s_query )
{
  wrap::system_message( s_query );
}
#endif

con*
data_base::get_con()
{

  if ( empty() )
  {
    wrap::system_message( DATANEW + string("(") + tool::int2string(size()+1) + ")" );
    return new con;
  }
  else if ( size() > i_max_con-1 )
  {
    wrap::system_message( DATAMAX + string("(") + tool::int2string(i_max_con) + ")" );
    usleep( 5000000 );
    return get_con();
  }


  con* p_con = *begin();
  pop_front();

  wrap::system_message( DATAGET  );

  p_con->renew_timeout();
  return p_con;
}

void
data_base::push_con( con* p_con )
{
  push_front( p_con );

  wrap::system_message( DATAADD );
}

void
data_base::disconnect_all_connections()
{
  wrap::system_message( DATADIS );

  while ( !empty() )
  {
    con* p_con = *begin();
    pop_front();
    delete p_con;
  }

}

void
data_base::check_data_con_timeout()
{
  int i_timeout_time = tool::string2int(wrap::CONF->get_elem("chat.database.contimeout"));
  int i_last_activity;


  list< list<con*>::iterator > erase_list;
  for ( list<con*>::iterator iter = begin();
        iter != end(); iter++ )
  {
    i_last_activity = (int) (*iter)->get_last_activity();
    if ( i_timeout_time <= i_last_activity )
    {
      con* p_con = *iter;
      erase_list.push_back(iter);
      delete p_con;
      wrap::system_message(DATADI2 + tool::int2string(size()-erase_list.size()+1) + ","
                           + tool::int2string(i_timeout_time) + ","
                           + tool::int2string(i_last_activity) + ")");
    }
  }
  for ( list< list<con*>::iterator >::iterator erase_iter = erase_list.begin();
        erase_iter != erase_list.end(); erase_iter++ )
    erase( *erase_iter );

}


#endif
#endif