added dynamic playlist item support, default and genre currently work

1 files changed, 169 insertions, 0 deletions

diff --git a/lib/class/random.class.php b/lib/class/random.class.php
new file mode 100644
index 00000000..0a72fdf6
--- /dev/null
+++ b/lib/class/random.class.php
@@ -0,0 +1,169 @@
+<?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
+	 */
+	private function __construct($id) { 
+
+		// Rien a faire
+
+	} // constructor
+
+	/**
+	 * play_url
+	 * This generates a random play url based on the passed type
+	 * and returns it
+	 */
+	public static function play_url($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 $results; 
+
+	} // get_genre
+
+	/**
+	 * validiate_type
+	 * this validates the random type, this is a private function
+	 */
+	private static function validate_type($type) { 
+
+                switch ($type) {
+                        case 'special':
+                                $type = $GLOBALS['user']->prefs['random_method'];
+			break;
+                        case 'genre':
+                        case 'album':
+                        case 'artist':
+                        case 'rated':
+                        break;
+                        default:
+                                return false;
+                        break;
+                } // end switch
+		
+		return $type; 
+
+	} // validate_type
+
+} //end of random class
+
+?>