mirror of
https://github.com/Yetangitu/ampache
synced 2025-10-03 17:59:21 +02:00
363 lines
9.3 KiB
PHP
363 lines
9.3 KiB
PHP
<?php
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/*
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Copyright (c) Ampache.org
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All rights reserved.
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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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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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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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* TempPlaylist Class
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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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class tmpPlaylist {
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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 $items = array();
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/**
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* Constructor
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* This takes a playlist_id as an optional argument and gathers the information
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* if not playlist_id is passed returns false (or if it isn't found
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*/
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public function __construct($playlist_id='') {
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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 = $value;
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}
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return true;
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} // __construct
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/**
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* _get_info
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* This is an internal (private) function that gathers the information for this object from the
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* playlist_id that was passed in.
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*/
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private function _get_info() {
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$sql = "SELECT * FROM `tmp_playlist` WHERE `id`='" . Dba::escape($this->id) . "'";
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$db_results = Dba::query($sql);
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$results = Dba::fetch_assoc($db_results);
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return $results;
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} // _get_info
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/**
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* get_from_session
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* This returns a playlist object based on the session that is passed to us
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* this is used by the load_playlist on user for the most part
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*/
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public static function get_from_session($session_id) {
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$session_id = Dba::escape($session_id);
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$sql = "SELECT `id` FROM `tmp_playlist` WHERE `session`='$session_id'";
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$db_results = Dba::query($sql);
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$results = Dba::fetch_row($db_results);
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if (!$results['0']) {
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$results['0'] = tmpPlaylist::create($session_id,'user','song');
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}
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$playlist = new tmpPlaylist($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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// This is a little stupid, because we don't have the user_id in the session or
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// in the tmp_playlist table we have 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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$sql = "SELECT `tmp_playlist`.`id` FROM `tmp_playlist` LEFT JOIN `session` ON `session`.`id`=`tmp_playlist`.`session` " .
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" WHERE `session`.`username`='$username' ORDER BY `session`.`expire` DESC";
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$db_results = Dba::query($sql);
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$data = Dba::fetch_assoc($db_results);
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return $data['id'];
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} // get_from_userid
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/**
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* get_items
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* This returns an array of all object_ids currently in this tmpPlaylist. This
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* has gotten a little more complicated because of type, the values are an array
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* 0 being ID 1 being TYPE
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*/
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public function get_items() {
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$order = 'ORDER BY id ASC';
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/* Select all objects from this playlist */
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$sql = "SELECT tmp_playlist_data.object_type, tmp_playlist_data.id, tmp_playlist_data.object_id " .
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"FROM tmp_playlist_data " .
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"WHERE tmp_playlist_data.tmp_playlist='" . Dba::escape($this->id) . "' $order";
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$db_results = Dba::query($sql);
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/* Define the array */
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$items = array();
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while ($results = Dba::fetch_assoc($db_results)) {
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$key = $results['id'];
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$items[$key] = array($results['object_type'],$results['object_id']);
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}
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return $items;
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} // get_items
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/**
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* get_next_object
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* This returns the next object in the tmp_playlist most of the time this
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* will just be the top entry, but if there is a base_playlist and no
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* items in the playlist then it returns a random entry from the base_playlist
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*/
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public function get_next_object() {
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$tmp_id = Dba::escape($this->id);
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$order = " ORDER BY tmp_playlist_data.id DESC";
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$sql = "SELECT tmp_playlist_data.object_id FROM tmp_playlist_data " .
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"WHERE tmp_playlist_data.tmp_playlist = '$tmp_id' $order LIMIT 1";
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$db_results = Dba::query($sql);
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$results = Dba::fetch_assoc($db_results);
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return $results['object_id'];
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} // get_next_object
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/**
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* count_items
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* This returns a count of the total number of tracks that are in this tmp playlist
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*/
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public function count_items() {
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$sql = "SELECT COUNT(`id`) FROM `tmp_playlist_data` WHERE `tmp_playlist_data`.`tmp_playlist`='" . $this->id . "'";
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$db_results = Dba::query($sql);
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$results = Dba::fetch_row($db_results);
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return $results['0'];
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} // count_items
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/**
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* clear
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* This clears all the objects out of a single playlist
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*/
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public function clear() {
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$sql = "DELETE FROM `tmp_playlist_data` WHERE `tmp_playlist_data`.`tmp_playlist`='" . $this->id . "'";
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$db_results = Dba::query($sql);
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return true;
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} // clear
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/**
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* create
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* This function initializes a new tmpPlaylist it is assoicated with the current
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* session rather then a user, as you could have same user multiple locations
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*/
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public static function create($sessid,$type,$object_type) {
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$sessid = Dba::escape($sessid);
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$type = Dba::escape($type);
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$object_type = Dba::escape($object_type);
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$sql = "INSERT INTO `tmp_playlist` (`session`,`type`,`object_type`) " .
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" VALUES ('$sessid','$type','$object_type')";
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$db_results = Dba::query($sql);
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$id = Dba::insert_id();
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$do_prune = rand(0,4);
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if ($do_prune%2) {
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self::prune_playlists();
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self::prune_tracks();
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}
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/* Clean any other playlists assoicated with this session */
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self::delete($sessid,$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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$playlist_id = Dba::escape($playlist_id);
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$tmp_id = Dba::escape($this->id);
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$sql = "UPDATE `tmp_playlist` SET tmp_playlist.base_playlist='$playlist_id' WHERE `id`='$tmp_id'";
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$db_results = Dba::query($sql);
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return true;
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} // update_playlist
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/**
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* delete
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* This deletes any other tmp_playlists assoicated with this
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* session
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*/
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public static function delete($sessid,$id) {
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$sessid = Dba::escape($sessid);
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$id = Dba::escape($id);
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$sql = "DELETE FROM `tmp_playlist` WHERE `session`='$sessid' AND `id` != '$id'";
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$db_results = Dba::query($sql);
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/* Remove assoicated tracks */
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self::prune_tracks();
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return true;
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} // delete
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/**
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* prune_playlists
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* This deletes and playlists that don't have an assoicated session
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*/
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public static function prune_playlists() {
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/* Just delete if no matching session row */
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$sql = "DELETE FROM `tmp_playlist` USING `tmp_playlist` " .
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"LEFT JOIN session ON session.id=tmp_playlist.session " .
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"WHERE session.id IS NULL AND tmp_playlist.type != 'vote'";
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$db_results = Dba::query($sql);
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return true;
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} // prune_playlists
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/**
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* prune_tracks
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* This prunes tracks that don't have playlists or don't have votes
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*/
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public static function prune_tracks() {
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// This prue is always run clears data for playlists that don't have tmp_playlist anymore
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$sql = "DELETE FROM tmp_playlist_data USING tmp_playlist_data " .
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"LEFT JOIN tmp_playlist ON tmp_playlist_data.tmp_playlist=tmp_playlist.id " .
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"WHERE tmp_playlist.id IS NULL";
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$db_results = Dba::query($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,$object_type) {
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$object_id = Dba::escape($object_id);
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$playlist_id = Dba::escape($this->id);
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$object_type = $object_type ? Dba::escape($object_type) : 'song';
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$sql = "INSERT INTO `tmp_playlist_data` (`object_id`,`tmp_playlist`,`object_type`) " .
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" VALUES ('$object_id','$playlist_id','$object_type')";
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$db_results = Dba::query($sql);
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return true;
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} // add_object
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/**
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* get_vote
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* This returns the current count for a specific song on this tmp_playlist
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*/
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public function get_vote($object_id) {
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$object_id = Dba::escape($object_id);
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$sql = "SELECT COUNT(`user`) AS `count` FROM user_vote " .
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" WHERE object_id='$object_id'";
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$db_results = Dba::query($sql);
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$results = Dba::fetch_assoc($db_results);
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return $results['count'];
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} // get_vote
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/**
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* vote_active
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* This checks to see if this playlist is a voting playlist
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* and if it is active
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*/
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public function vote_active() {
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/* Going to do a little more here later */
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if ($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($id) {
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$id = Dba::escape($id);
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/* delete the track its self */
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$sql = "DELETE FROM `tmp_playlist_data` " .
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" WHERE `id`='$id'";
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$db_results = Dba::query($sql);
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return true;
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} // delete_track
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} // class tmpPlaylist
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