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             $action->script($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         $inbox = new Notice_inbox();
 158         $inbox->notice_id = $notice->id;
 159
 160         if ($inbox->find()) {
 161             while ($inbox->fetch()) {
 162                 $user = User::staticGet('id', $inbox->user_id);
 163                 $paths[] = array('all', $user->nickname);
 164             }
 165         }
 166
 167         // Add to the replies timeline
 168
 169         $reply = new Reply();
 170         $reply->notice_id = $notice->id;
 171
 172         if ($reply->find()) {
 173             while ($reply->fetch()) {
 174                 $user = User::staticGet('id', $reply->profile_id);
 175                 if (!empty($user)) {
 176                     $paths[] = array('replies', $user->nickname);
 177                 }
 178             }
 179         }
 180
 181         // Add to the group timeline
 182         // XXX: join
 183
 184         $gi = new Group_inbox();
 185         $gi->notice_id = $notice->id;
 186
 187         if ($gi->find()) {
 188             while ($gi->fetch()) {
 189                 $ug = User_group::staticGet('id', $gi->group_id);
 190                 $paths[] = array('showgroup', $ug->nickname);
 191             }
 192         }
 193
 194         if (count($paths) > 0) {
 195
 196             $json = $this->noticeAsJson($notice);
 197
 198             $this->_connect();
 199
 200             foreach ($paths as $path) {
 201                 $timeline = $this->_pathToChannel($path);
 202                 $this->_publish($timeline, $json);
 203             }
 204
 205             $this->_disconnect();
 206         }
 207
 208         return true;
 209     }
 210
 211     function onStartShowBody($action)
 212     {
 213         $realtime = $action->boolean('realtime');
 214         if (!$realtime) {
 215             return true;
 216         }
 217
 218         $action->elementStart('body',
 219                               (common_current_user()) ? array('id' => $action->trimmed('action'),
 220                                                               'class' => 'user_in realtime-popup')
 221                               : array('id' => $action->trimmed('action'),
 222                                       'class'=> 'realtime-popup'));
 223
 224         // XXX hack to deal with JS that tries to get the
 225         // root url from page output
 226
 227         $action->elementStart('address');
 228         $action->element('a', array('class' => 'url',
 229                                   'href' => common_local_url('public')),
 230                          '');
 231         $action->elementEnd('address');
 232
 233         if (common_logged_in()) {
 234             $action->showNoticeForm();
 235         }
 236
 237         $action->showContentBlock();
 238         $action->showScripts();
 239         $action->elementEnd('body');
 240         return false; // No default processing
 241     }
 242
 243     function noticeAsJson($notice)
 244     {
 245         // FIXME: this code should be abstracted to a neutral third
 246         // party, like Notice::asJson(). I'm not sure of the ethics
 247         // of refactoring from within a plugin, so I'm just abusing
 248         // the ApiAction method. Don't do this unless you're me!
 249
 250         require_once(INSTALLDIR.'/lib/api.php');
 251
 252         $act = new ApiAction('/dev/null');
 253
 254         $arr = $act->twitterStatusArray($notice, true);
 255         $arr['url'] = $notice->bestUrl();
 256         $arr['html'] = htmlspecialchars($notice->rendered);
 257         $arr['source'] = htmlspecialchars($arr['source']);
 258
 259         if (!empty($notice->reply_to)) {
 260             $reply_to = Notice::staticGet('id', $notice->reply_to);
 261             if (!empty($reply_to)) {
 262                 $arr['in_reply_to_status_url'] = $reply_to->bestUrl();
 263             }
 264             $reply_to = null;
 265         }
 266
 267         $profile = $notice->getProfile();
 268         $arr['user']['profile_url'] = $profile->profileurl;
 269
 270         // Add needed repeat data
 271
 272         if (!empty($notice->repeat_of)) {
 273             $original = Notice::staticGet('id', $notice->repeat_of);
 274             if (!empty($original)) {
 275                 $arr['retweeted_status']['url'] = $original->bestUrl();
 276                 $arr['retweeted_status']['html'] = htmlspecialchars($original->rendered);
 277                 $arr['retweeted_status']['source'] = htmlspecialchars($original->source);
 278                 $originalProfile = $original->getProfile();
 279                 $arr['retweeted_status']['user']['profile_url'] = $originalProfile->profileurl;
 280                 if (!empty($original->reply_to)) {
 281                     $originalReply = Notice::staticGet('id', $original->reply_to);
 282                     $arr['retweeted_status']['in_reply_to_status_url'] = $originalReply->bestUrl();
 283                 }
 284             }
 285             $original = null;
 286         }
 287
 288         return $arr;
 289     }
 290
 291     function getNoticeTags($notice)
 292     {
 293         $tags = null;
 294
 295         $nt = new Notice_tag();
 296         $nt->notice_id = $notice->id;
 297
 298         if ($nt->find()) {
 299             $tags = array();
 300             while ($nt->fetch()) {
 301                 $tags[] = $nt->tag;
 302             }
 303         }
 304
 305         $nt->free();
 306         $nt = null;
 307
 308         return $tags;
 309     }
 310
 311     function _getScripts()
 312     {
 313         return array('plugins/Realtime/realtimeupdate.js',
 314                      'plugins/Realtime/json2.js');
 315     }
 316
 317     function _updateInitialize($timeline, $user_id)
 318     {
 319         return "RealtimeUpdate.init($user_id, \"$this->replyurl\", \"$this->favorurl\", \"$this->repeaturl\", \"$this->deleteurl\"); ";
 320     }
 321
 322     function _connect()
 323     {
 324     }
 325
 326     function _publish($timeline, $json)
 327     {
 328     }
 329
 330     function _disconnect()
 331     {
 332     }
 333
 334     function _pathToChannel($path)
 335     {
 336         return '';
 337     }
 338
 339     function _getTimeline($action)
 340     {
 341         $path = null;
 342         $timeline = null;
 343
 344         $action_name = $action->trimmed('action');
 345
 346         switch ($action_name) {
 347          case 'public':
 348             $path = array('public');
 349             break;
 350          case 'tag':
 351             $tag = $action->trimmed('tag');
 352             if (!empty($tag)) {
 353                 $path = array('tag', $tag);
 354             }
 355             break;
 356          case 'showstream':
 357          case 'all':
 358          case 'replies':
 359          case 'showgroup':
 360             $nickname = common_canonical_nickname($action->trimmed('nickname'));
 361             if (!empty($nickname)) {
 362                 $path = array($action_name, $nickname);
 363             }
 364             break;
 365          default:
 366             break;
 367         }
 368
 369         if (!empty($path)) {
 370             $timeline = $this->_pathToChannel($path);
 371         }
 372
 373         return $timeline;
 374     }
 375 }