gnu-social/plugins/Bookmark/classes/Bookmark.php
2015-10-13 22:55:27 +02:00

365 lines
12 KiB
PHP

<?php
/**
* Data class to mark notices as bookmarks
*
* PHP version 5
*
* @category Data
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
* @link http://status.net/
*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2009, StatusNet, Inc.
*
* 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/>.
*/
if (!defined('GNUSOCIAL')) { exit(1); }
/**
* For storing the fact that a notice is a bookmark
*
* @category Bookmark
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
* @link http://status.net/
*
* @see DB_DataObject
*/
class Bookmark extends Managed_DataObject
{
public $__table = 'bookmark'; // table name
public $id; // char(36) primary_key not_null
public $profile_id; // int(4) not_null
public $url; // varchar(191) not_null not 255 because utf8mb4 takes more space
public $title; // varchar(191) not 255 because utf8mb4 takes more space
public $uri; // varchar(191) not 255 because utf8mb4 takes more space
public $description; // text
public $created; // datetime
public static function schemaDef()
{
return array(
'fields' => array(
'id' => array('type' => 'char',
'length' => 36,
'not null' => true),
'profile_id' => array('type' => 'int', 'not null' => true),
'uri' => array('type' => 'varchar',
'length' => 191,
'not null' => true),
'url' => array('type' => 'varchar',
'length' => 191,
'not null' => true),
'title' => array('type' => 'varchar', 'length' => 191),
'description' => array('type' => 'text'),
'created' => array('type' => 'datetime', 'not null' => true),
),
'primary key' => array('uri'),
'unique keys' => array(
'bookmark_id_key' => array('id'),
),
'foreign keys' => array(
'bookmark_profile_id_fkey' => array('profile', array('profile_id' => 'id')),
'bookmark_uri_fkey' => array('notice', array('uri' => 'uri')),
),
'indexes' => array('bookmark_created_idx' => array('created'),
'bookmark_url_idx' => array('url'),
'bookmark_profile_id_idx' => array('profile_id'),
),
);
}
/**
* Get a bookmark based on a notice
*
* @param Notice $stored Notice activity which represents the Bookmark
*
* @return Bookmark The found bookmark object.
* @throws NoResultException When you don't find it after all.
*/
static public function fromStored(Notice $stored)
{
return self::getByPK(array('uri' => $stored->getUri()));
}
public function getStored()
{
return Notice::getByKeys(array('uri' => $this->getUri()));
}
public function getDescription()
{
return $this->description;
}
public function getTitle()
{
return $this->title;
}
public function getUri()
{
return $this->uri;
}
public function getUrl()
{
if (empty($this->url)) {
throw new InvalidUrlException($this->url);
}
return $this->url;
}
/**
* Get the bookmark that a user made for an URL
*
* @param Profile $profile Profile to check for
* @param string $url URL to check for
*
* @return Bookmark bookmark found or null
*/
static function getByURL(Profile $profile, $url)
{
$nb = new Bookmark();
$nb->profile_id = $profile->getID();
$nb->url = $url;
if (!$nb->find(true)) {
throw new NoResultException($nb);
}
return $nb;
}
/**
* Store a Bookmark object
*
* @param Profile $profile To save the bookmark for
* @param string $title Title of the bookmark
* @param string $url URL of the bookmark
* @param string $description Description of the bookmark
*
* @return Bookmark the Bookmark object
*/
static function saveActivityObject(ActivityObject $actobj, Notice $stored)
{
$url = null;
// each extra element is array('tagname', array('attr'=>'val', ...), 'content')
foreach ($actobj->extra as $extra) {
if ($extra[1]['rel'] !== 'related') {
continue;
}
if ($url===null && strlen($extra[1]['href'])>0) {
$url = $extra[1]['href'];
} elseif ($url !== null) {
// TRANS: Client exception thrown when a bookmark is formatted incorrectly.
throw new ClientException(sprintf(_m('Expected exactly 1 link rel=related in a Bookmark, got %1$d.'), count($relLinkEls)));
}
}
if (is_null($url)) {
// TRANS: Client exception thrown when a bookmark is formatted incorrectly.
throw new ClientException(sprintf(_m('Expected exactly 1 link rel=related in a Bookmark, got %1$d.'), count($relLinkEls)));
}
if (!strlen($actobj->title)) {
throw new ClientException(_m('You must provide a non-empty title.'));
}
if (!common_valid_http_url($url)) {
throw new ClientException(_m('Only web bookmarks can be posted (HTTP or HTTPS).'));
}
try {
$object = self::getByURL($stored->getProfile(), $url);
throw new ClientException(_m('You have already bookmarked this URL.'));
} catch (NoResultException $e) {
// Alright, so then we have to create it.
}
$nb = new Bookmark();
$nb->id = UUID::gen();
$nb->uri = $stored->getUri();
$nb->profile_id = $stored->getProfile()->getID();
$nb->title = $actobj->title;
$nb->url = $url;
$nb->description = $actobj->summary;
$nb->created = $stored->created;
$result = $nb->insert();
if ($result === false) {
throw new ServerException('Could not insert Bookmark into database!');
}
return $nb;
}
public function asActivityObject()
{
$stored = $this->getStored();
$object = new ActivityObject();
$object->id = $this->getUri();
$object->type = ActivityObject::BOOKMARK;
$object->title = $this->getTitle();
$object->summary = $this->getDescription();
$object->link = $stored->getUrl();
$object->content = $stored->getRendered();
// Attributes of the URL
$attachments = $stored->attachments();
if (count($attachments) != 1) {
// TRANS: Server exception thrown when a bookmark has multiple attachments.
throw new ServerException(_m('Bookmark notice with the '.
'wrong number of attachments.'));
}
$bookmarkedurl = $attachments[0];
$attrs = array('rel' => 'related',
'href' => $bookmarkedurl->getUrl());
if (!strlen($bookmarkedurl->title)) {
$attrs['title'] = $bookmarkedurl->title;
}
$object->extra[] = array('link', $attrs, null);
// Attributes of the thumbnail, if any
try {
$thumbnail = $bookmarkedurl->getThumbnail();
$tattrs = array('rel' => 'preview',
'href' => $thumbnail->getUrl());
if (!empty($thumbnail->width)) {
$tattrs['media:width'] = $thumbnail->width;
}
if (!empty($thumbnail->height)) {
$tattrs['media:height'] = $thumbnail->height;
}
$object->extra[] = array('link', $tattrs, null);
} catch (UnsupportedMediaException $e) {
// No image thumbnail metadata available
}
return $object;
}
/**
* Save a new notice bookmark
*
* @param Profile $profile To save the bookmark for
* @param string $title Title of the bookmark
* @param string $url URL of the bookmark
* @param array $rawtags array of tags
* @param string $description Description of the bookmark
* @param array $options Options for the Notice::saveNew()
*
* @return Notice saved notice
*/
static function addNew(Profile $actor, $title, $url, array $rawtags, $description, array $options=array())
{
$act = new Activity();
$act->verb = ActivityVerb::POST;
$act->time = time();
$act->actor = $actor->asActivityObject();
$actobj = new ActivityObject();
$actobj->type = ActivityObject::BOOKMARK;
$actobj->title = $title;
$actobj->summary = $description;
$actobj->extra[] = array('link', array('rel'=>'related', 'href'=>$url), null);
$act->objects[] = $actobj;
$act->enclosures[] = $url;
$tags = array();
$replies = array();
// filter "for:nickname" tags
foreach ($rawtags as $tag) {
if (strtolower(mb_substr($tag, 0, 4)) == 'for:') {
// skip if done by caller
if (!array_key_exists('replies', $options)) {
$nickname = mb_substr($tag, 4);
$other = common_relative_profile($actor, $nickname);
if (!empty($other)) {
$replies[] = $other->getUri();
}
}
} else {
$tags[] = common_canonical_tag($tag);
}
}
$hashtags = array();
$taglinks = array();
foreach ($tags as $tag) {
$hashtags[] = '#'.$tag;
$attrs = array('href' => Notice_tag::url($tag),
'rel' => $tag,
'class' => 'tag');
$taglinks[] = XMLStringer::estring('a', $attrs, $tag);
}
// Use user's preferences for short URLs, if possible
// FIXME: Should be possible to with the Profile object...
try {
$user = $actor->getUser();
$shortUrl = File_redirection::makeShort($url, empty($user) ? null : $user);
} catch (Exception $e) {
// Don't let this stop us.
$shortUrl = $url;
}
// TRANS: Rendered bookmark content.
// TRANS: %1$s is a URL, %2$s the bookmark title, %3$s is the bookmark description,
// TRANS: %4$s is space separated list of hash tags.
$actobj->content = sprintf(_m('<span class="xfolkentry">'.
'<a class="taggedlink" href="%1$s">%2$s</a> '.
'<span class="description">%3$s</span> '.
'<span class="meta">%4$s</span>'.
'</span>'),
htmlspecialchars($url),
htmlspecialchars($title),
htmlspecialchars($description),
implode(' ', $taglinks));
foreach ($tags as $term) {
$catEl = new AtomCategory();
$catEl->term = $term;
$activity->categories[] = $catEl;
}
$options = array_merge(array('urls' => array($url),
'rendered' => $rendered,
'tags' => $tags,
'replies' => $replies,
'object_type' => ActivityObject::BOOKMARK),
$options);
return Notice::saveActivity($act, $actor, $options);
}
}