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<?php
/*
Copyright 2001 - 2007 Ampache.org
All Rights Reserved
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; version 2
of the License.
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.
*/
/**
* Random Class
* All of the 'random' type events, elements, voodoo done by ampache is done
* by this class, there isn't a table for this class so most of it's functions
* are static
*/
class Random {
/**
* Constructor
* nothing to see here, move along
*/
public function __construct() {
// Rien a faire
} // constructor
/**
* play_url
* This generates a random play url based on the passed type
* and returns it
*/
public static function play_url($type) {
if (!$type = self::validate_type($type)) {
return false;
}
if (Config::get('require_session')) {
$session_string = '&sid=' . session_id();
}
$web_path = Config::get('web_path');
if (Config::get('force_http_play') OR !empty($force_http)) {
$port = Config::get('http_port');
if (preg_match("/:\d+/",$web_path)) {
$web_path = str_replace("https://", "http://",$web_path);
}
else {
$web_path = str_replace("https://", "http://",$web_path);
}
}
$uid = $GLOBALS['user']->id;
$url = $web_path . "/play/index.php?random=1&type=$type&uid=$uid$session_string";
return $url;
} // play_url
/**
* get_single_song
* This returns a single song pulled based on the passed random method
*/
public static function get_single_song($type) {
if (!$type = self::validate_type($type)) {
return false;
}
$method_name = 'get_' . $type;
if (method_exists('Random',$method_name)) {
$song_ids = self::$method_name(1);
$song_id = array_pop($song_ids);
}
return $song_id;
} // get_single_song
/**
* get_default
* This just randomly picks a song at whim from all catalogs
* nothing special here...
*/
public static function get_default($limit) {
$results = array();
$sql = "SELECT `id` FROM `song` ORDER BY RAND() LIMIT $limit";
$db_results = Dba::query($sql);
while ($row = Dba::fetch_assoc($db_results)) {
$results[] = $row['id'];
}
return $results;
} // get_default
/**
* get_genre
* This looks at the last object played by the current user and
* then picks a song of the same genre at random...
*/
public static function get_genre($limit) {
$results = array();
// Get the last genre played by us
$data = $GLOBALS['user']->get_recently_played('1','genre');
if ($data['0']) {
$where_sql = " WHERE `genre`='" . $data['0'] . "' ";
}
$sql = "SELECT `id` FROM `song` $where_sql ORDER BY RAND() LIMIT $limit";
$db_results = Dba::query($sql);
while ($row = Dba::fetch_assoc($db_results)) {
$results[] = $row['id'];
}
return $results;
} // get_genre
/**
* get_album
* This looks at the last album played by the current user and
* picks something else in the same album
*/
public static function get_album($limit) {
$results = array();
// Get the last album playbed by us
$data = $GLOBALS['user']->get_recently_played('1','album');
if ($data['0']) {
$where_sql = " WHERE `album`='" . $data['0'] . "' ";
}
$sql = "SELECT `id` FROM `song` $where_sql ORDER BY RAND() LIMIT $limit";
$db_results = Dba::query($sql);
while ($row = Dba::fetch_assoc($db_results)) {
$results[] = $row['id'];
}
return $results;
} // get_album
/**
* get_artist
* This looks at the last artist played and then randomly picks a song from the
* same artist
*/
public static function get_artist($limit) {
$results = array();
$data = $GLOBALS['user']->get_recently_played('1','artist');
if ($data['0']) {
$where_sql = " WHERE `artist`='" . $data['0'] . "' ";
}
$sql = "SELECT `id` FROM `song` $where_sql ORDER BY RAND() LIMIT $limit";
$db_results = Dba::query($sql);
while ($row = Dba::fetch_assoc($db_results)) {
$results[] = $row['id'];
}
return $results;
} // get_artist
/**
* get_type_name
* This returns a 'purrty' name for the differnt random types
*/
public static function get_type_name($type) {
switch ($type) {
case 'album':
return _('Related Album');
break;
case 'genre':
return _('Related Genre');
break;
case 'artist':
return _('Related Artist');
break;
default:
return _('Pure Random');
break;
} // end switch
} // get_type_name
/**
* validiate_type
* this validates the random type
*/
public static function validate_type($type) {
switch ($type) {
case 'default':
case 'genre':
case 'album':
case 'artist':
case 'rated':
return $type;
break;
default:
return 'default';
break;
} // end switch
return $type;
} // validate_type
} //end of random class
?>
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