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[quix0rs-gnu-social.git] / plugins / Realtime / RealtimePlugin.php
1 <?php
2 /**
3  * StatusNet, the distributed open-source microblogging tool
4  *
5  * Superclass for plugins that do "real time" updates of timelines using Ajax
6  *
7  * PHP version 5
8  *
9  * LICENCE: This program is free software: you can redistribute it and/or modify
10  * it under the terms of the GNU Affero General Public License as published by
11  * the Free Software Foundation, either version 3 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU Affero General Public License for more details.
18  *
19  * You should have received a copy of the GNU Affero General Public License
20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
21  *
22  * @category  Plugin
23  * @package   StatusNet
24  * @author    Evan Prodromou <evan@status.net>
25  * @copyright 2009 StatusNet, Inc.
26  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
27  * @link      http://status.net/
28  */
29
30 if (!defined('STATUSNET') && !defined('LACONICA')) {
31     exit(1);
32 }
33
34 /**
35  * Superclass for plugin to do realtime updates
36  *
37  * Based on experience with the Comet and Meteor plugins,
38  * this superclass extracts out some of the common functionality
39  *
40  * @category Plugin
41  * @package  StatusNet
42  * @author   Evan Prodromou <evan@status.net>
43  * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
44  * @link     http://status.net/
45  */
46
47 class RealtimePlugin extends Plugin
48 {
49     protected $replyurl = null;
50     protected $favorurl = null;
51     protected $deleteurl = null;
52
53     /**
54      * When it's time to initialize the plugin, calculate and
55      * pass the URLs we need.
56      */
57
58     function onInitializePlugin()
59     {
60         $this->replyurl = common_local_url('newnotice');
61         $this->favorurl = common_local_url('favor');
62         $this->repeaturl = common_local_url('repeat');
63         // FIXME: need to find a better way to pass this pattern in
64         $this->deleteurl = common_local_url('deletenotice',
65                                             array('notice' => '0000000000'));
66         return true;
67     }
68
69     function onEndShowScripts($action)
70     {
71         $timeline = $this->_getTimeline($action);
72
73         // If there's not a timeline on this page,
74         // just return true
75
76         if (empty($timeline)) {
77             return true;
78         }
79
80         $base = $action->selfUrl();
81         if (mb_strstr($base, '?')) {
82             $url = $base . '&realtime=1';
83         } else {
84             $url = $base . '?realtime=1';
85         }
86
87         $scripts = $this->_getScripts();
88
89         foreach ($scripts as $script) {
90             $action->script(common_path($script));
91         }
92
93         $user = common_current_user();
94
95         if (!empty($user->id)) {
96             $user_id = $user->id;
97         } else {
98             $user_id = 0;
99         }
100
101         if ($action->boolean('realtime')) {
102             $realtimeUI = ' RealtimeUpdate.initPopupWindow();';
103         }
104         else {
105             $pluginPath = common_path('plugins/Realtime/');
106             $realtimeUI = ' RealtimeUpdate.initActions("'.$url.'", "'.$timeline.'", "'. $pluginPath .'");';
107         }
108
109         $script = ' $(document).ready(function() { '.
110           $realtimeUI.
111           $this->_updateInitialize($timeline, $user_id).
112           '}); ';
113         $action->inlineScript($script);
114
115         return true;
116     }
117
118     function onEndShowStatusNetStyles($action)
119     {
120         $action->cssLink(common_path('plugins/Realtime/realtimeupdate.css'),
121                          null, 'screen, projection, tv');
122         return true;
123     }
124
125     function onHandleQueuedNotice($notice)
126     {
127         $paths = array();
128
129         // Add to the author's timeline
130
131         $user = User::staticGet('id', $notice->profile_id);
132
133         if (!empty($user)) {
134             $paths[] = array('showstream', $user->nickname);
135         }
136
137         // Add to the public timeline
138
139         if ($notice->is_local == Notice::LOCAL_PUBLIC ||
140             ($notice->is_local == Notice::REMOTE_OMB && !common_config('public', 'localonly'))) {
141             $paths[] = array('public');
142         }
143
144         // Add to the tags timeline
145
146         $tags = $this->getNoticeTags($notice);
147
148         if (!empty($tags)) {
149             foreach ($tags as $tag) {
150                 $paths[] = array('tag', $tag);
151             }
152         }
153
154         // Add to inbox timelines
155         // XXX: do a join
156
157         $ni = $notice->whoGets();
158
159         foreach (array_keys($ni) as $user_id) {
160             $user = User::staticGet('id', $user_id);
161             $paths[] = array('all', $user->nickname);
162         }
163
164         // Add to the replies timeline
165
166         $reply = new Reply();
167         $reply->notice_id = $notice->id;
168
169         if ($reply->find()) {
170             while ($reply->fetch()) {
171                 $user = User::staticGet('id', $reply->profile_id);
172                 if (!empty($user)) {
173                     $paths[] = array('replies', $user->nickname);
174                 }
175             }
176         }
177
178         // Add to the group timeline
179         // XXX: join
180
181         $gi = new Group_inbox();
182         $gi->notice_id = $notice->id;
183
184         if ($gi->find()) {
185             while ($gi->fetch()) {
186                 $ug = User_group::staticGet('id', $gi->group_id);
187                 $paths[] = array('showgroup', $ug->nickname);
188             }
189         }
190
191         if (count($paths) > 0) {
192
193             $json = $this->noticeAsJson($notice);
194
195             $this->_connect();
196
197             foreach ($paths as $path) {
198                 $timeline = $this->_pathToChannel($path);
199                 $this->_publish($timeline, $json);
200             }
201
202             $this->_disconnect();
203         }
204
205         return true;
206     }
207
208     function onStartShowBody($action)
209     {
210         $realtime = $action->boolean('realtime');
211         if (!$realtime) {
212             return true;
213         }
214
215         $action->elementStart('body',
216                               (common_current_user()) ? array('id' => $action->trimmed('action'),
217                                                               'class' => 'user_in realtime-popup')
218                               : array('id' => $action->trimmed('action'),
219                                       'class'=> 'realtime-popup'));
220
221         // XXX hack to deal with JS that tries to get the
222         // root url from page output
223
224         $action->elementStart('address');
225         $action->element('a', array('class' => 'url',
226                                   'href' => common_local_url('public')),
227                          '');
228         $action->elementEnd('address');
229
230         if (common_logged_in()) {
231             $action->showNoticeForm();
232         }
233
234         $action->showContentBlock();
235         $action->showScripts();
236         $action->elementEnd('body');
237         return false; // No default processing
238     }
239
240     function noticeAsJson($notice)
241     {
242         // FIXME: this code should be abstracted to a neutral third
243         // party, like Notice::asJson(). I'm not sure of the ethics
244         // of refactoring from within a plugin, so I'm just abusing
245         // the ApiAction method. Don't do this unless you're me!
246
247         require_once(INSTALLDIR.'/lib/api.php');
248
249         $act = new ApiAction('/dev/null');
250
251         $arr = $act->twitterStatusArray($notice, true);
252         $arr['url'] = $notice->bestUrl();
253         $arr['html'] = htmlspecialchars($notice->rendered);
254         $arr['source'] = htmlspecialchars($arr['source']);
255
256         if (!empty($notice->reply_to)) {
257             $reply_to = Notice::staticGet('id', $notice->reply_to);
258             if (!empty($reply_to)) {
259                 $arr['in_reply_to_status_url'] = $reply_to->bestUrl();
260             }
261             $reply_to = null;
262         }
263
264         $profile = $notice->getProfile();
265         $arr['user']['profile_url'] = $profile->profileurl;
266
267         // Add needed repeat data
268
269         if (!empty($notice->repeat_of)) {
270             $original = Notice::staticGet('id', $notice->repeat_of);
271             if (!empty($original)) {
272                 $arr['retweeted_status']['url'] = $original->bestUrl();
273                 $arr['retweeted_status']['html'] = htmlspecialchars($original->rendered);
274                 $arr['retweeted_status']['source'] = htmlspecialchars($original->source);
275                 $originalProfile = $original->getProfile();
276                 $arr['retweeted_status']['user']['profile_url'] = $originalProfile->profileurl;
277                 if (!empty($original->reply_to)) {
278                     $originalReply = Notice::staticGet('id', $original->reply_to);
279                     $arr['retweeted_status']['in_reply_to_status_url'] = $originalReply->bestUrl();
280                 }
281             }
282             $original = null;
283         }
284
285         return $arr;
286     }
287
288     function getNoticeTags($notice)
289     {
290         $tags = null;
291
292         $nt = new Notice_tag();
293         $nt->notice_id = $notice->id;
294
295         if ($nt->find()) {
296             $tags = array();
297             while ($nt->fetch()) {
298                 $tags[] = $nt->tag;
299             }
300         }
301
302         $nt->free();
303         $nt = null;
304
305         return $tags;
306     }
307
308     function _getScripts()
309     {
310         return array('plugins/Realtime/realtimeupdate.js');
311     }
312
313     function _updateInitialize($timeline, $user_id)
314     {
315         return "RealtimeUpdate.init($user_id, \"$this->replyurl\", \"$this->favorurl\", \"$this->repeaturl\", \"$this->deleteurl\"); ";
316     }
317
318     function _connect()
319     {
320     }
321
322     function _publish($timeline, $json)
323     {
324     }
325
326     function _disconnect()
327     {
328     }
329
330     function _pathToChannel($path)
331     {
332         return '';
333     }
334
335     function _getTimeline($action)
336     {
337         $path = null;
338         $timeline = null;
339
340         $action_name = $action->trimmed('action');
341
342         switch ($action_name) {
343          case 'public':
344             $path = array('public');
345             break;
346          case 'tag':
347             $tag = $action->trimmed('tag');
348             if (!empty($tag)) {
349                 $path = array('tag', $tag);
350             }
351             break;
352          case 'showstream':
353          case 'all':
354          case 'replies':
355          case 'showgroup':
356             $nickname = common_canonical_nickname($action->trimmed('nickname'));
357             if (!empty($nickname)) {
358                 $path = array($action_name, $nickname);
359             }
360             break;
361          default:
362             break;
363         }
364
365         if (!empty($path)) {
366             $timeline = $this->_pathToChannel($path);
367         }
368
369         return $timeline;
370     }
371 }