mirror of
https://github.com/Yetangitu/ampache
synced 2025-10-03 09:49:30 +02:00
362 lines
10 KiB
PHP
362 lines
10 KiB
PHP
<?php
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/* vim:set softtabstop=4 shiftwidth=4 expandtab: */
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/**
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*
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* LICENSE: GNU General Public License, version 2 (GPLv2)
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* Copyright 2001 - 2015 Ampache.org
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License v2
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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/**
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* TempPlaylist Class
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*
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* This class handles the temporary playlists in Ampache. It handles the
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* tmp_playlist and tmp_playlist_data tables, and sneaks out at night to
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* visit user_vote from time to time.
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*
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*/
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class Tmp_Playlist extends database_object
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{
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/* Variables from the Datbase */
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public $id;
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public $session;
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public $type;
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public $object_type;
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public $base_playlist;
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/* Generated Elements */
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public $items = array();
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/**
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* Constructor
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* This takes a playlist_id as an optional argument and gathers the
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* information. If no playlist_id is passed or the requested one isn't
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* found, return false.
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*/
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public function __construct($playlist_id='')
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{
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if (!$playlist_id) { return false; }
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$this->id = intval($playlist_id);
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$info = $this->_get_info();
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foreach ($info as $key=>$value) {
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$this->$key = $value;
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}
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return true;
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} // __construct
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/**
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* _get_info
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* This is an internal (private) function that gathers the information
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* for this object from the playlist_id that was passed in.
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*/
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private function _get_info()
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{
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$sql = "SELECT * FROM `tmp_playlist` WHERE `id`='" . Dba::escape($this->id) . "'";
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$db_results = Dba::read($sql);
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$results = Dba::fetch_assoc($db_results);
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return $results;
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} // _get_info
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/**
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* get_from_session
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* This returns a playlist object based on the session that is passed to
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* us. This is used by the load_playlist on user for the most part.
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*/
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public static function get_from_session($session_id)
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{
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$session_id = Dba::escape($session_id);
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$sql = "SELECT `id` FROM `tmp_playlist` WHERE `session`='$session_id'";
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$db_results = Dba::read($sql);
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$results = Dba::fetch_row($db_results);
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if (!$results['0']) {
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$results['0'] = Tmp_Playlist::create(array(
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'session_id' => $session_id,
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'type' => 'user',
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'object_type' => 'song'
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));
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}
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$playlist = new Tmp_Playlist($results['0']);
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return $playlist;
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} // get_from_session
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/**
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* get_from_userid
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* This returns a tmp playlist object based on a userid passed
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* this is used for the user profiles page
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*/
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public static function get_from_userid($user_id)
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{
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// This is a little stupid, but because we don't have the
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// user_id in the session or in the tmp_playlist table we have
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// to do it this way.
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$client = new User($user_id);
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$username = Dba::escape($client->username);
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$sql = "SELECT `tmp_playlist`.`id` FROM `tmp_playlist` " .
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"LEFT JOIN `session` ON " .
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"`session`.`id`=`tmp_playlist`.`session` " .
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"WHERE `session`.`username`='$username' " .
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"ORDER BY `session`.`expire` DESC";
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$db_results = Dba::read($sql);
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$data = Dba::fetch_assoc($db_results);
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return $data['id'];
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} // get_from_userid
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/**
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* get_items
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* Returns an array of all object_ids currently in this Tmp_Playlist.
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*/
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public function get_items()
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{
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/* Select all objects from this playlist */
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$sql = "SELECT `object_type`, `id`, `object_id` " .
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"FROM `tmp_playlist_data` " .
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"WHERE `tmp_playlist` = ? ORDER BY `id` ASC";
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$db_results = Dba::read($sql, array($this->id));
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/* Define the array */
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$items = array();
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$i = 1;
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while ($results = Dba::fetch_assoc($db_results)) {
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$items[] = array(
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'object_type' => $results['object_type'],
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'object_id' => $results['object_id'],
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'track_id' => $results['id'],
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'track' => $i++,
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);
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}
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return $items;
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} // get_items
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/**
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* get_next_object
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* This returns the next object in the tmp_playlist.
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*/
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public function get_next_object()
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{
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$id = Dba::escape($this->id);
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$sql = "SELECT `object_id` FROM `tmp_playlist_data` " .
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"WHERE `tmp_playlist`='$id' ORDER BY `id` LIMIT 1";
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$db_results = Dba::read($sql);
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$results = Dba::fetch_assoc($db_results);
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return $results['object_id'];
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} // get_next_object
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/**
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* count_items
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* This returns a count of the total number of tracks that are in this
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* tmp playlist
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*/
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public function count_items()
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{
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$id = Dba::escape($this->id);
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$sql = "SELECT COUNT(`id`) FROM `tmp_playlist_data` WHERE " .
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"`tmp_playlist`='$id'";
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$db_results = Dba::read($sql);
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$results = Dba::fetch_row($db_results);
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return $results['0'];
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} // count_items
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/**
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* clear
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* This clears all the objects out of a single playlist
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*/
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public function clear()
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{
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$sql = "DELETE FROM `tmp_playlist_data` WHERE `tmp_playlist` = ?";
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Dba::write($sql, array($this->id));
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return true;
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} // clear
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/**
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* create
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* This function initializes a new Tmp_Playlist. It is associated with
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* the current session rather than a user, as you could have the same
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* user logged in from multiple locations.
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*/
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public static function create($data)
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{
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$sql = "INSERT INTO `tmp_playlist` " .
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"(`session`,`type`,`object_type`) " .
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" VALUES (?, ?, ?)";
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Dba::write($sql, array($data['session_id'], $data['type'], $data['object_type']));
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$id = Dba::insert_id();
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/* Clean any other playlists associated with this session */
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self::session_clean($data['session_id'], $id);
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return $id;
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} // create
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/**
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* update_playlist
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* This updates the base_playlist on this tmp_playlist
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*/
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public function update_playlist($playlist_id)
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{
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$sql = "UPDATE `tmp_playlist` SET " .
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"`base_playlist`= ? WHERE `id`= ?";
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Dba::write($sql, array($playlist_id, $this->id));
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return true;
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} // update_playlist
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/**
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* session_clean
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* This deletes any other tmp_playlists associated with this
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* session
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*/
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public static function session_clean($sessid, $id)
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{
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$sql = "DELETE FROM `tmp_playlist` WHERE `session`= ? AND `id` != ?";
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Dba::write($sql, array($sessid, $id));
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/* Remove associated tracks */
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self::prune_tracks();
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return true;
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} // session_clean
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/**
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* gc
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* This cleans up old data
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*/
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public static function gc()
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{
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self::prune_playlists();
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self::prune_tracks();
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//Dba::write("DELETE FROM `tmp_playlist_data` USING `tmp_playlist_data` LEFT JOIN `song` ON `tmp_playlist_data`.`object_id` = `song`.`id` WHERE `song`.`id` IS NULL");
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}
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/**
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* prune_playlists
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* This deletes any playlists that don't have an associated session
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*/
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public static function prune_playlists()
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{
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/* Just delete if no matching session row */
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$sql = "DELETE FROM `tmp_playlist` USING `tmp_playlist` " .
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"LEFT JOIN `session` " .
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"ON `session`.`id`=`tmp_playlist`.`session` " .
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"WHERE `session`.`id` IS NULL " .
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"AND `tmp_playlist`.`type` != 'vote'";
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Dba::write($sql);
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return true;
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} // prune_playlists
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/**
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* prune_tracks
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* This prunes tracks that don't have playlists or don't have votes
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*/
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public static function prune_tracks()
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{
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// This prune is always run and clears data for playlists that
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// don't exist anymore
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$sql = "DELETE FROM `tmp_playlist_data` USING " .
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"`tmp_playlist_data` LEFT JOIN `tmp_playlist` ON " .
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"`tmp_playlist_data`.`tmp_playlist`=`tmp_playlist`.`id` " .
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"WHERE `tmp_playlist`.`id` IS NULL";
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Dba::write($sql);
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} // prune_tracks
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/**
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* add_object
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* This adds the object of $this->object_type to this tmp playlist
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* it takes an optional type, default is song
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*/
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public function add_object($object_id,$object_type)
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{
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$sql = "INSERT INTO `tmp_playlist_data` " .
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"(`object_id`,`tmp_playlist`,`object_type`) " .
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" VALUES (?, ?, ?)";
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Dba::write($sql, array($object_id, $this->id, $object_type));
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return true;
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} // add_object
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public function add_medias($medias)
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{
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foreach ($medias as $media) {
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$this->add_object($media['object_id'], $media['object_type']);
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}
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}
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/**
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* vote_active
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* This checks to see if this playlist is a voting playlist
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* and if it is active
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*/
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public function vote_active()
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{
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/* Going to do a little more here later */
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if ($this->type == 'vote') { return true; }
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return false;
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} // vote_active
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/**
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* delete_track
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* This deletes a track from the tmpplaylist
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*/
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public function delete_track($id)
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{
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/* delete the track its self */
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$sql = "DELETE FROM `tmp_playlist_data` WHERE `id` = ?";
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Dba::write($sql, array($id));
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return true;
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} // delete_track
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} // class Tmp_Playlist
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