/* Monolith chat library.
 * - by Richard W.M. Jones <rich@annexia.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: lib.c,v 1.3 2003/02/22 15:34:27 rich Exp $
 */

#include "config.h"

#include <stdio.h>
#include <stdlib.h>

#include <pool.h>
#include <pthr_dbi.h>
#include <pthr_iolib.h>

#include <monolith.h>

void
chat_fill_buffer (io_handle io, ml_session session, const char *conninfo)
{
  int userid;
  int bufsize;
  db_handle dbh;
  st_handle sth;
  int i;

  /* Calculate the size of the buffer. Anonymous users always get
   * the default, which is 4096 bytes. For other users, we go to the
   * database. (We always need to go to the database to cope with the
   * case of multiple rws instances ... doh!)
   */
  userid = ml_session_userid (session);
  if (userid == 0)
    bufsize = 4096;
  else
    {
      dbh = get_db_handle (conninfo, DBI_THROW_ERRORS);

      sth = st_prepare_cached
	(dbh,
	 "select fill_buffer from ml_chat_userprefs where userid = ?",
	 DBI_INT);
      st_execute (sth, userid);

      st_bind (sth, 0, bufsize, DBI_INT);

      if (!st_fetch (sth)) bufsize = 4096; /* Default. */

      put_db_handle (dbh);
    }

  /* Send the fill buffer back to the user. */
  for (i = 0; i < bufsize; ++i)
    io_fputc (' ', io);

  io_fflush (io);
}