gnu-social/classes/Conversation.php

163 lines
6.1 KiB
PHP

<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Data class for Conversations
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Data
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @author Mikael Nordfeldth <mmn@hethane.se>
* @copyright 2010 StatusNet Inc.
* @copyright 2009-2014 Free Software Foundation, Inc http://www.fsf.org
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('GNUSOCIAL')) { exit(1); }
class Conversation extends Managed_DataObject
{
public $__table = 'conversation'; // table name
public $id; // int(4) primary_key not_null auto_increment
public $uri; // varchar(191) unique_key not 255 because utf8mb4 takes more space
public $created; // datetime not_null
public $modified; // timestamp not_null default_CURRENT_TIMESTAMP
public static function schemaDef()
{
return array(
'fields' => array(
'id' => array('type' => 'serial', 'not null' => true, 'description' => 'Unique identifier, (again) unrelated to notice id since 2016-01-06'),
'uri' => array('type' => 'varchar', 'not null'=>true, 'length' => 191, 'description' => 'URI of the conversation'),
'created' => array('type' => 'datetime', 'not null' => true, 'description' => 'date this record was created'),
'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
),
'primary key' => array('id'),
'unique keys' => array(
'conversation_uri_key' => array('uri'),
),
);
}
static public function beforeSchemaUpdate()
{
$table = strtolower(get_called_class());
$schema = Schema::get();
$schemadef = $schema->getTableDef($table);
// 2016-01-06 We have to make sure there is no conversation with id==0 since it will screw up auto increment resequencing
if ($schemadef['fields']['id']['auto_increment']) {
// since we already have auto incrementing ('serial') we can continue
return;
}
// The conversation will be recreated in upgrade.php, which will
// generate a new URI, but that's collateral damage for you.
$conv = new Conversation();
$conv->id = 0;
if ($conv->find()) {
while ($conv->fetch()) {
// Since we have filtered on 0 this only deletes such entries
// which I have been afraid wouldn't work, but apparently does!
// (I thought it would act as null or something and find _all_ conversation entries)
$conv->delete();
}
}
}
/**
* Factory method for creating a new conversation.
*
* Use this for locally initiated conversations. Remote notices should
* preferrably supply their own conversation URIs in the OStatus feed.
*
* @return Conversation the new conversation DO
*/
static function create($uri=null, $created=null)
{
// Be aware that the Notice does not have an id yet since it's not inserted!
$conv = new Conversation();
$conv->created = $created ?: common_sql_now();
$conv->uri = $uri ?: sprintf('%s%s=%s:%s=%s',
TagURI::mint(),
'objectType', 'thread',
'nonce', common_random_hexstr(8));
// This insert throws exceptions on failure
$conv->insert();
return $conv;
}
static function noticeCount($id)
{
$keypart = sprintf('conversation:notice_count:%d', $id);
$cnt = self::cacheGet($keypart);
if ($cnt !== false) {
return $cnt;
}
$notice = new Notice();
$notice->conversation = $id;
$notice->whereAddIn('verb', array(ActivityVerb::POST, ActivityUtils::resolveUri(ActivityVerb::POST, true)), $notice->columnType('verb'));
$cnt = $notice->count();
self::cacheSet($keypart, $cnt);
return $cnt;
}
static public function getUrlFromNotice(Notice $notice, $anchor=true)
{
$conv = Conversation::getByID($notice->conversation);
return $conv->getUrl($anchor ? $notice->getID() : null);
}
public function getUri()
{
return $this->uri;
}
public function getUrl($noticeId=null)
{
// FIXME: the URL router should take notice-id as an argument...
return common_local_url('conversation', array('id' => $this->getID())) .
($noticeId===null ? '' : "#notice-{$noticeId}");
}
// FIXME: ...will 500 ever be too low? Taken from ConversationAction::MAX_NOTICES
public function getNotices(Profile $scoped=null, $offset=0, $limit=500)
{
$stream = new ConversationNoticeStream($this->getID(), $scoped);
$notices = $stream->getNotices($offset, $limit);
return $notices;
}
public function insert()
{
$result = parent::insert();
if ($result === false) {
common_log_db_error($this, 'INSERT', __FILE__);
throw new ServerException(_('Failed to insert Conversation into database'));
}
return $result;
}
}