mirror of
https://github.com/Yetangitu/ampache
synced 2025-10-03 09:49:30 +02:00
656 lines
20 KiB
PHP
656 lines
20 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 - 2013 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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* Tag Class
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*
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* This class hnadles all of the tag relation operations
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*
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*/
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class Tag extends database_object
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{
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public $id;
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public $name;
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// constructed
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public $weight=0;
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public $count=0;
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public $owner=0;
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/**
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* constructor
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* This takes a tag id and returns all of the relevent information
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*/
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public function __construct($id)
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{
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if (!$id) { return false; }
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$info = $this->get_info($id);
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foreach ($info as $key=>$value) {
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$this->$key = $value;
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} // end foreach
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} // constructor
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/**
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* construct_from_name
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* This attempts to construct the tag from a name, rather then the ID
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*/
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public static function construct_from_name($name)
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{
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$tag_id = self::tag_exists($name);
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$tag = new Tag($tag_id);
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return $tag;
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} // construct_from_name
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/**
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* format
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* This makes the tag presentable to the great humans that use this program, other life forms
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* will just have to fend for themselves
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*/
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public function format($type=0,$object_id=0)
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{
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if ($type AND !self::validate_type($type)) { return false; }
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if ($type) {
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$this->set_object($type,$object_id);
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}
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$size = 3 + ($this->weight-1) - ($this->count-1);
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if (abs($size) > 4) { $size = 4; }
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if (abs($size) < 1) { $size = 1; }
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if ($this->owner == $GLOBALS['user']->id) {
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$action = '?page=tag&action=remove_tag&type=' . scrub_out($type) . '&tag_id=' . intval($this->id) . '&object_id=' . intval($object_id);
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$class = "hover-remove ";
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} else {
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$action = '?page=tag&action=add_tag&type=' . scrub_out($type) . '&tag_id=' . intval($this->id) . '&object_id=' . intval($object_id);
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$class = "hover-add ";
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}
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$class .= 'tag_size' . $size;
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$this->f_class = $class;
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$this->f_name = Ajax::text($action,$this->name,'modify_tag_' . $this->id . '_' . $object_id,'',$class);
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} // format
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/**
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* set_object
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* This associates the tag with a specified object, we try to get the
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* data from the map cache, otherwise I guess we'll just have to look it
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* up.
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*/
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public function set_object($type,$object_id)
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{
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if (parent::is_cached('tag_top_' . $type,$object_id)) {
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$data = parent::get_from_cache('tag_top_' . $type,$object_id);
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} else {
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$data = self::get_top_tags($type,$object_id);
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}
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// If nothing is found, then go ahead and return false
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if (!is_array($data) OR !count($data)) { return false; }
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$this->weight = count($data[$this->id]['users']);
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if (in_array($GLOBALS['user']->id,$data[$this->id]['users'])) {
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$this->owner = $GLOBALS['user']->id;
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}
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$this->count = count($data);
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} // set_object
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/**
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* build_cache
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* This takes an array of object ids and caches all of their information
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* in a single query, cuts down on the connections
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*/
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public static function build_cache($ids)
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{
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if (!is_array($ids) OR !count($ids)) { return false; }
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$idlist = '(' . implode(',',$ids) . ')';
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$sql = "SELECT * FROM `tag` WHERE `id` IN $idlist";
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$db_results = Dba::read($sql);
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while ($row = Dba::fetch_assoc($db_results)) {
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parent::add_to_cache('tag',$row['id'],$row);
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}
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return true;
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} // build_cache
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/**
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* build_map_cache
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* This builds a cache of the mappings for the specified object, no limit is given
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*/
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public static function build_map_cache($type,$ids)
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{
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if (!is_array($ids) OR !count($ids)) { return false; }
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$type = self::validate_type($type);
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$idlist = '(' . implode(',',$ids) . ')';
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$sql = "SELECT `tag_map`.`id`,`tag_map`.`tag_id`,`tag_map`.`object_id`,`tag_map`.`user` FROM `tag_map` " .
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"WHERE `tag_map`.`object_type`='$type' AND `tag_map`.`object_id` IN $idlist ";
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$db_results = Dba::read($sql);
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$tags = array();
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while ($row = Dba::fetch_assoc($db_results)) {
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$tags[$row['object_id']][$row['tag_id']]['users'][] = $row['user'];
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$tag_map[$row['object_id']] = array('id'=>$row['id'],'tag_id'=>$row['tag_id'],'user'=>$row['user'],'object_type'=>$type,'object_id'=>$row['object_id']);
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}
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// Run through our original ids as we also want to cache NULL
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// results
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foreach ($ids as $id) {
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if (!isset($tags[$id])) {
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$tags[$id] = null;
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$tag_map[$id] = null;
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}
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parent::add_to_cache('tag_top_' . $type, $id, $tags[$id]);
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parent::add_to_cache('tag_map_' . $type, $id, $tag_map[$id]);
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}
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return true;
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} // build_map_cache
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/**
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* add
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* This is a wrapper function, it figures out what we need to add, be it a tag
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* and map, or just the mapping
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*/
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public static function add($type,$id,$value,$user=false)
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{
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// Validate the tag type
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if (!self::validate_type($type)) { return false; }
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if (!is_numeric($id)) { return false; }
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$cleaned_value = self::clean_tag($value);
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if (!strlen($cleaned_value)) { return false; }
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$uid = ($user === false) ? intval($user) : intval($GLOBALS['user']->id);
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// Check and see if the tag exists, if not create it, we need the tag id from this
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if (!$tag_id = self::tag_exists($cleaned_value)) {
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$tag_id = self::add_tag($cleaned_value);
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}
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if (!$tag_id) {
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debug_event('Error','Error unable to create tag value:' . $cleaned_value . ' unknown error','1');
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return false;
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}
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// We've got the tag id, let's see if it's already got a map, if not then create the map and return the value
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if (!$map_id = self::tag_map_exists($type,$id,$tag_id,$user)) {
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$map_id = self::add_tag_map($type,$id,$tag_id,$user);
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}
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return $map_id;
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} // add
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/**
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* add_tag
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* This function adds a new tag, for now we're going to limit the tagging a bit
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*/
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public static function add_tag($value)
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{
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// Clean it up and make it tagish
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$value = self::clean_tag($value);
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if (!strlen($value)) { return false; }
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$value = Dba::escape($value);
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$sql = "REPLACE INTO `tag` SET `name`='$value'";
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$db_results = Dba::write($sql);
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$insert_id = Dba::insert_id();
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parent::add_to_cache('tag_name',$value,$insert_id);
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return $insert_id;
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} // add_tag
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/**
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* add_tag_map
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* This adds a specific tag to the map for specified object
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*/
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public static function add_tag_map($type,$object_id,$tag_id,$user='')
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{
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$uid = ($user == '') ? intval($GLOBALS['user']->id) : intval($user);
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$tag_id = intval($tag_id);
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if (!self::validate_type($type)) { return false; }
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$id = intval($object_id);
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if (!$tag_id || !$id) { return false; }
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$sql = "INSERT INTO `tag_map` (`tag_id`,`user`,`object_type`,`object_id`) " .
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"VALUES ('$tag_id','$uid','$type','$id')";
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$db_results = Dba::write($sql);
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$insert_id = Dba::insert_id();
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parent::add_to_cache('tag_map_' . $type,$insert_id,array('tag_id'=>$tag_id,'user'=>$uid,'object_type'=>$type,'object_id'=>$id));
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return $insert_id;
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} // add_tag_map
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/**
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* gc
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*
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* This cleans out tag_maps that are obsolete and then removes tags that
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* have no maps.
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*/
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public static function gc()
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{
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$sql = "DELETE FROM `tag_map` USING `tag_map` LEFT JOIN `song` ON `song`.`id`=`tag_map`.`object_id` " .
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"WHERE `tag_map`.`object_type`='song' AND `song`.`id` IS NULL";
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$db_results = Dba::write($sql);
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$sql = "DELETE FROM `tag_map` USING `tag_map` LEFT JOIN `album` ON `album`.`id`=`tag_map`.`object_id` " .
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"WHERE `tag_map`.`object_type`='album' AND `album`.`id` IS NULL";
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$db_results = Dba::write($sql);
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$sql = "DELETE FROM `tag_map` USING `tag_map` LEFT JOIN `artist` ON `artist`.`id`=`tag_map`.`object_id` " .
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"WHERE `tag_map`.`object_type`='artist' AND `artist`.`id` IS NULL";
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$db_results = Dba::write($sql);
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$sql = "DELETE FROM `tag_map` USING `tag_map` LEFT JOIN `video` ON `video`.`id`=`tag_map`.`object_id` " .
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"WHERE `tag_map`.`object_type`='video' AND `video`.`id` IS NULL";
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$db_results = Dba::write($sql);
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// Now nuke the tags themselves
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$sql = "DELETE FROM `tag` USING `tag` LEFT JOIN `tag_map` ON `tag`.`id`=`tag_map`.`tag_id` " .
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"WHERE `tag_map`.`id` IS NULL";
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$db_results = Dba::write($sql);
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}
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/**
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* tag_exists
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* This checks to see if a tag exists, this has nothing to do with objects or maps
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*/
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public static function tag_exists($value)
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{
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if (parent::is_cached('tag_name',$value)) {
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return parent::get_from_cache('tag_name',$value);
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}
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$value = Dba::escape($value);
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$sql = "SELECT * FROM `tag` WHERE `name`='$value'";
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$db_results = Dba::read($sql);
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$results = Dba::fetch_assoc($db_results);
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parent::add_to_cache('tag_name',$results['name'],$results['id']);
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return $results['id'];
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} // tag_exists
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/**
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* tag_map_exists
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* This looks to see if the current mapping of the current object of the current tag of the current
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* user exists, lots of currents... taste good in scones.
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*/
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public static function tag_map_exists($type,$object_id,$tag_id,$user)
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{
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if (!self::validate_type($type)) { return false; }
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if (parent::is_cached('tag_map_' . $type,$object_id)) {
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$data = parent::get_from_cache('tag_map_' . $type,$object_id);
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return $data['id'];
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}
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$object_id = Dba::escape($object_id);
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$tag_id = Dba::escape($tag_id);
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$user = Dba::escape($user);
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$type = Dba::escape($type);
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$sql = "SELECT * FROM `tag_map` WHERE `tag_id`='$tag_id' AND `user`='$user' AND `object_id`='$object_id' AND `object_type`='$type'";
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$db_results = Dba::read($sql);
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$results = Dba::fetch_assoc($db_results);
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parent::add_to_cache('tag_map_' . $type,$results['id'],$results);
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return $results['id'];
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} // tag_map_exists
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/**
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* get_top_tags
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* This gets the top tags for the specified object using limit
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*/
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public static function get_top_tags($type, $object_id, $limit = 10)
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{
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if (!self::validate_type($type)) { return false; }
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if (parent::is_cached('tag_top_' . $type,$object_id)) {
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return parent::get_from_cache('tag_top_' . $type,$object_id);
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}
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$object_id = intval($object_id);
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$limit = intval($limit);
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$sql = "SELECT `tag_id`, `user` FROM `tag_map` " .
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"WHERE `object_type`='$type' AND `object_id`='$object_id' " .
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"LIMIT $limit";
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$db_results = Dba::read($sql);
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$results = array();
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while ($row = Dba::fetch_assoc($db_results)) {
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$results[$row['tag_id']]['users'][] = $row['user'];
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}
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parent::add_to_cache('tag_top_' . $type,$object_id,$results);
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return $results;
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} // get_top_tags
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/**
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* get_object_tags
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* Display all tags that apply to maching target type of the specified id
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* UNUSED
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*/
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public static function get_object_tags($type, $id)
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{
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if (!self::validate_type($type)) { return array(); }
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$id = Dba::escape($id);
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$sql = "SELECT `tag_map`.`id`, `tag`.`name`, `tag_map`.`user` FROM `tag` " .
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"LEFT JOIN `tag_map` ON `tag_map`.`tag_id`=`tag`.`id` " .
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"WHERE `tag_map`.`object_type`='$type' AND `tag_map`.`object_id`='$id'";
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$results = array();
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$db_results = Dba::read($sql);
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while ($row = Dba::fetch_assoc($db_results)) {
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$results[] = $row;
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}
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return $results;
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} // get_object_tags
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/**
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* get_tag_objects
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* This gets the objects from a specified tag and returns an array of object ids, nothing more
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*/
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public static function get_tag_objects($type,$tag_id,$count='',$offset='')
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{
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if (!self::validate_type($type)) { return array(); }
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if ($count) {
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$limit_sql = "LIMIT ";
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if ($offset) $limit_sql .= intval($offset) . ',';
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$limit_sql .= intval($count);
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}
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$sql = "SELECT DISTINCT `tag_map`.`object_id` FROM `tag_map` " .
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"WHERE `tag_map`.`tag_id` = ? AND `tag_map`.`object_type` = ? $limit_sql";
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$db_results = Dba::read($sql, array($tag_id, $type));
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$results = array();
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while ($row = Dba::fetch_assoc($db_results)) {
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$results[] = $row['object_id'];
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}
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return $results;
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} // get_tag_objects
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/**
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* get_tags
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* This is a non-object non type depedent function that just returns tags
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* we've got, it can take filters (this is used by the tag cloud)
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*/
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public static function get_tags($limit = 0,$filters=array())
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{
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$sql = "SELECT `tag_map`.`tag_id`,COUNT(`tag_map`.`object_id`) AS `count` " .
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"FROM `tag_map` " .
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"LEFT JOIN `tag` ON `tag`.`id`=`tag_map`.`tag_id` " .
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"GROUP BY `tag`.`name` ORDER BY `count` DESC ";
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if ($limit >0) {
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$sql .= " LIMIT $limit";
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}
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$db_results = Dba::read($sql);
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$results = array();
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while ($row = Dba::fetch_assoc($db_results)) {
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if ($row['count'] > $top) { $top = $row['count']; }
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$results[$row['tag_id']] = array('id'=>$row['tag_id'],'count'=>$row['count']);
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$count+= $row['count'];
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}
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// Do something with this
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$min = $row['count'];
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return $results;
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} // get_tags
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/**
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* get_display
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* This returns a human formated version of the tags that we are given
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* it also takes a type so that it knows how to return it, this is used
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* by the formating functions of the different objects
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*/
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public static function get_display($tags)
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{
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if (!is_array($tags)) { return ''; }
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$results = '';
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// Iterate through the tags, format them according to type and element id
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foreach ($tags as $tag_id=>$value) {
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$tag = new Tag($tag_id);
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$results .= $tag->name . ', ';
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}
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$results = rtrim($results,', ');
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return $results;
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} // get_display
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/**
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* update_tag_list
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* Update the tags list based on commated list (ex. tag1,tag2,tag3,..)
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*/
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public static function update_tag_list($tags_comma, $type, $object_id)
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{
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debug_event('tag.class', 'Updating tags for values {'.$tags_comma.'} type {'.$type.'} object_id {'.$object_id.'}', '5');
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$ctags = Tag::get_top_tags($type, $object_id);
|
|
$editedTags = explode(",", $tags_comma);
|
|
|
|
foreach ($ctags as $ctid => $ctv) {
|
|
$ctag = new Tag($ctid);
|
|
foreach ($editedTags as $tk => $tv) {
|
|
if ($ctag->name == $tv) {
|
|
debug_event('tag.class', 'Tag {'.$ctag->name.'} already found. Do nothing.', '5');
|
|
// Removing the tag from the new tags array
|
|
unset($editedTags[$tk]);
|
|
break;
|
|
} else {
|
|
debug_event('tag.class', 'Tag {'.$ctag->name.'} not found in the new list. Delete it.', '5');
|
|
$ctag->remove_map($type, $object_id);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Look if we need to add some new tags
|
|
foreach ($editedTags as $tk => $tv) {
|
|
debug_event('tag.class', 'Adding new tag {'.$tv.'}', '5');
|
|
Tag::add($type, $object_id, $tv, false);
|
|
}
|
|
} // update_tag_list
|
|
|
|
/**
|
|
* count
|
|
* This returns the count for the all objects associated with this tag
|
|
* If a type is specific only counts for said type are returned
|
|
*/
|
|
public function count($type='')
|
|
{
|
|
if ($type) {
|
|
$filter_sql = " AND `object_type`='" . Dba::escape($type) . "'";
|
|
}
|
|
|
|
$results = array();
|
|
|
|
$sql = "SELECT COUNT(`id`) AS `count`,`object_type` FROM `tag_map` WHERE `tag_id`='" . Dba::escape($this->id) . "'" . $filter_sql . " GROUP BY `object_type`";
|
|
$db_results = Dba::read($sql);
|
|
|
|
while ($row = Dba::fetch_assoc($db_results)) {
|
|
$results[$row['object_type']] = $row['count'];
|
|
}
|
|
|
|
return $results;
|
|
|
|
} // count
|
|
|
|
/**
|
|
* filter_with_prefs
|
|
* This filters the tags based on the users preference
|
|
*/
|
|
public static function filter_with_prefs($l)
|
|
{
|
|
$colors = array('#0000FF',
|
|
'#00FF00', '#FFFF00', '#00FFFF','#FF00FF','#FF0000');
|
|
$prefs = 'tag company';
|
|
// $prefs = Config::get('tags_userlist');
|
|
|
|
$ulist = explode(' ', $prefs);
|
|
$req = '';
|
|
|
|
foreach ($ulist as $i) {
|
|
$req .= "'" . Dba::escape($i) . "',";
|
|
}
|
|
$req = rtrim($req, ',');
|
|
|
|
$sql = 'SELECT `id`,`username` FROM `user` WHERE ';
|
|
|
|
if ($prefs=='all') {
|
|
$sql .= '1';
|
|
} else {
|
|
$sql .= 'username in ('.$req.')';
|
|
}
|
|
|
|
$db_results = Dba::read($sql);
|
|
|
|
$uids=array();
|
|
$usernames = array();
|
|
$p = 0;
|
|
while ($r = Dba::fetch_assoc($db_results)) {
|
|
$usernames[$r['id']] = $r['username'];
|
|
$uids[$r['id']] = $colors[$p];
|
|
$p++;
|
|
if ($p == sizeof($colors)) {
|
|
$p = 0;
|
|
}
|
|
}
|
|
|
|
$res = array();
|
|
|
|
foreach ($l as $i) {
|
|
if ($GLOBALS['user']->id == $i['user']) {
|
|
$res[] = $i;
|
|
} elseif (isset($uids[$i['user']])) {
|
|
$i['color'] = $uids[$i['user']];
|
|
$i['username'] = $usernames[$i['user']];
|
|
$res[] = $i;
|
|
}
|
|
}
|
|
|
|
return $res;
|
|
|
|
} // filter_with_prefs
|
|
|
|
/**
|
|
* remove_map
|
|
* This will only remove tag maps for the current user
|
|
*/
|
|
public function remove_map($type,$object_id)
|
|
{
|
|
if (!self::validate_type($type)) { return false; }
|
|
|
|
$type = Dba::escape($type);
|
|
$tag_id = Dba::escape($this->id);
|
|
$object_id = Dba::escape($object_id);
|
|
$user_id = Dba::escape($GLOBALS['user']->id);
|
|
|
|
$sql = "DELETE FROM `tag_map` WHERE `tag_id`='$tag_id' AND `object_type`='$type' AND `object_id`='$object_id' AND `user`='$user_id'";
|
|
$db_results = Dba::write($sql);
|
|
|
|
return true;
|
|
|
|
} // remove_map
|
|
|
|
/**
|
|
* validate_type
|
|
* This validates the type of the object the user wants to tag, we limit this to types
|
|
* we currently support
|
|
*/
|
|
public static function validate_type($type)
|
|
{
|
|
$valid_array = array('song','artist','album','video','playlist','live_stream');
|
|
|
|
if (in_array($type,$valid_array)) { return $type; }
|
|
|
|
return false;
|
|
|
|
} // validate_type
|
|
|
|
/**
|
|
* clean_tag
|
|
* This takes a string and makes it Tagish
|
|
*/
|
|
public static function clean_tag($value)
|
|
{
|
|
$tag = preg_replace("/[^\w\_\-\s\&]/","",$value);
|
|
|
|
return $tag;
|
|
|
|
} // clean_tag
|
|
|
|
} // end of Tag class
|