218 lines
5.3 KiB
PHP
218 lines
5.3 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Class for serializing Activity Streams in JSON
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Feed
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @copyright 2011 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET'))
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{
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exit(1);
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}
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/**
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* A class for generating JSON documents that represent an Activity Streams
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*
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* @category Feed
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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class ActivityStreamJSONDocument
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{
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/* Top level array representing the document */
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protected $doc = array();
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/* The current authenticated user */
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protected $cur = null;
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/**
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* Constructor
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*
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* @param User $cur the current authenticated user
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*/
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function __construct($cur = null)
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{
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$this->cur = $cur;
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/* Title of the JSON document */
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$this->doc['title'] = null;
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/* Array of activity items */
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$this->doc['items'] = array();
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/* Array of links associated with the document */
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$this->doc['links'] = array();
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}
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/**
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* Set the title of the document
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*
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* @param String $title the title
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*/
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function setTitle($title)
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{
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$this->doc['title'] = $title;
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}
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/**
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* Add more than one Item to the document
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*
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* @param mixed $notices an array of Notice objects or handle
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*
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*/
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function addItemsFromNotices($notices)
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{
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if (is_array($notices)) {
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foreach ($notices as $notice) {
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$this->addItemFromNotice($notice);
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}
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} else {
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while ($notices->fetch()) {
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$this->addItemFromNotice($notices);
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}
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}
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}
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/**
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* Add a single Notice to the document
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*
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* @param Notice $notice a Notice to add
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*/
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function addItemFromNotice($notice)
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{
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$cur = empty($this->cur) ? common_current_user() : $this->cur;
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$act = $notice->asActivity($cur);
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$act->extra[] = $notice->noticeInfo($cur);
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array_push($this->doc['items'], $act->asArray());
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}
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/**
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* Add a link to the JSON document
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*
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* @param string $url the URL for the link
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* @param string $rel the link relationship
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*/
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function addLink($url = null, $rel = null, $mediaType = null)
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{
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$link = new ActivityStreamsLink($url, $rel, $mediaType);
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$this->doc['link'][] = $link->asArray();
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}
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/*
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* Return the entire document as a big string of JSON
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*
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* @return string encoded JSON output
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*/
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function asString()
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{
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return json_encode(array_filter($this->doc));
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}
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}
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/**
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* A class for representing MediaLinks in JSON Activities
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*
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* @category Feed
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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class ActivityStreamsMediaLink extends ActivityStreamsLink
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{
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private $linkDict;
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function __construct(
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$url = null,
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$width = null,
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$height = null,
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$mediaType = null,
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$rel = null,
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$duration = null
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)
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{
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parent::__construct($url, $rel, $mediaType);
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$this->linkDict = array(
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'width' => $width,
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'height' => $height,
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'duration' => $duration
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);
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}
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function asArray()
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{
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return array_merge(
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parent::asArray(),
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array_filter($this->linkDict)
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);
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}
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}
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/**
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* A class for representing links in JSON Activities
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*
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* @category Feed
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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class ActivityStreamsLink
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{
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private $linkDict;
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function __construct($url = null, $rel = null, $mediaType = null)
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{
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// links MUST have a URL
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if (empty($url)) {
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throw new Exception('Links must have a URL.');
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}
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$this->linkDict = array(
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'url' => $url,
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'rel' => $rel, // extension
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'type' => $mediaType // extension
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);
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}
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function asArray()
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{
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return array_filter($this->linkDict);
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}
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}
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