/* playlist.c
 * - Functions for playlist handling
 * Copyright (c) 2000 Alexander Haväng
 * Copyright (c) 2001-2 Brendan Cully
 *
 * 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 "definitions.h"
#include "playlist.h"

extern ices_config_t ices_config;
static int playlist_init = 0;

/* Global function definitions */

/* Wrapper function for the specific playlist handler's current line number.
 * This might not be available if your playlist is a database or something
 * weird, but it's just for the cue file so it doesn't matter much */
int
ices_playlist_get_current_lineno (void)
{
  if (ices_config.pm.get_lineno)
     return ices_config.pm.get_lineno ();

  return 0;
}

/* Wrapper for the playlist handler's next file function.
 * Remember that if this returns non-NULL then the return
 * value is free()ed by the caller. */
char *
ices_playlist_get_next (void)
{
  return ices_config.pm.get_next ();
}

/* Allows a script to override file metadata if it wants. Returns NULL
 *   to mean 'do it yourself'. Modules need not implement this. */
char*
ices_playlist_get_metadata (void)
{
  if (ices_config.pm.get_metadata)
    return ices_config.pm.get_metadata ();

  return NULL;
}

/* Initialize the toplevel playlist handler */
int
ices_playlist_initialize (void)
{
  int rc = -1;

  ices_log_debug ("Initializing playlist handler...");

  ices_config.pm.reload = NULL;

  switch (ices_config.pm.playlist_type) {
    case ices_playlist_builtin_e:
      rc = ices_playlist_builtin_initialize (&ices_config.pm);
      break;
    case ices_playlist_python_e:
#ifdef HAVE_LIBPYTHON
      rc = ices_playlist_python_initialize (&ices_config.pm);
#else
      ices_log_error ("This binary has no support for embedded python");
#endif
      break;
    case ices_playlist_perl_e:
#ifdef HAVE_LIBPERL
      rc = ices_playlist_perl_initialize (&ices_config.pm);
#else
      ices_log_error ("This binary has no support for embedded perl");
#endif
      break;
    default:
      ices_log_error ("Unknown playlist module!");
      break;
  }

  if (rc < 0) {
    ices_log ("Initialization of playlist handler failed. [%s]", ices_log_get_error ());
    ices_setup_shutdown ();
  }

  playlist_init = 1;
  return rc;
}

/* Reload the playlist module */
int
ices_playlist_reload (void)
{
  if (ices_config.pm.reload)
    return ices_config.pm.reload ();

  return 0;
}

/* Shutdown the playlist handler */
void
ices_playlist_shutdown (void)
{
  if (playlist_init)
    ices_config.pm.shutdown ();
}