source: branches/1.5/feed.php @ 8406

Last change on this file since 8406 was 1330, checked in by plg, 18 years ago

bug 378 fixed: category_id can't be -1 because the field is an unsigned
integer.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 10.2 KB
Line 
1<?php
2// +-----------------------------------------------------------------------+
3// | PhpWebGallery - a PHP based picture gallery                           |
4// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
5// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
6// +-----------------------------------------------------------------------+
7// | branch        : BSF (Best So Far)
8// | file          : $RCSfile$
9// | last update   : $Date: 2006-05-31 21:36:09 +0000 (Wed, 31 May 2006) $
10// | last modifier : $Author: plg $
11// | revision      : $Revision: 1330 $
12// +-----------------------------------------------------------------------+
13// | This program is free software; you can redistribute it and/or modify  |
14// | it under the terms of the GNU General Public License as published by  |
15// | the Free Software Foundation                                          |
16// |                                                                       |
17// | This program is distributed in the hope that it will be useful, but   |
18// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
19// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
20// | General Public License for more details.                              |
21// |                                                                       |
22// | You should have received a copy of the GNU General Public License     |
23// | along with this program; if not, write to the Free Software           |
24// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
25// | USA.                                                                  |
26// +-----------------------------------------------------------------------+
27
28define('PHPWG_ROOT_PATH','./');
29include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
30
31// +-----------------------------------------------------------------------+
32// |                               functions                               |
33// +-----------------------------------------------------------------------+
34
35/**
36 * new comments between two dates, according to authorized categories
37 *
38 * @param string start (mysql datetime format)
39 * @param string end (mysql datetime format)
40 * @param string forbidden categories (comma separated)
41 * @return array comment ids
42 */
43function new_comments($start, $end)
44{
45  global $user;
46 
47  $query = '
48SELECT DISTINCT c.id AS comment_id
49  FROM '.COMMENTS_TABLE.' AS c
50     , '.IMAGE_CATEGORY_TABLE.' AS ic
51  WHERE c.image_id = ic.image_id
52    AND c.validation_date > \''.$start.'\'
53    AND c.validation_date <= \''.$end.'\'
54    AND category_id NOT IN ('.$user['forbidden_categories'].')
55;';
56  return array_from_query($query, 'comment_id');
57}
58
59/**
60 * unvalidated at a precise date
61 *
62 * Comments that are registered and not validated yet on a precise date
63 *
64 * @param string date (mysql datetime format)
65 * @return array comment ids
66 */
67function unvalidated_comments($date)
68{
69  $query = '
70SELECT DISTINCT id
71  FROM '.COMMENTS_TABLE.'
72  WHERE date <= \''.$date.'\'
73    AND (validated = \'false\'
74         OR validation_date > \''.$date.'\')
75;';
76  return array_from_query($query, 'id');
77}
78
79/**
80 * new elements between two dates, according to authorized categories
81 *
82 * @param string start (mysql datetime format)
83 * @param string end (mysql datetime format)
84 * @param string forbidden categories (comma separated)
85 * @return array element ids
86 */
87function new_elements($start, $end)
88{
89  global $user;
90 
91  $query = '
92SELECT DISTINCT image_id
93  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON image_id = id
94  WHERE date_available > \''.$start.'\'
95    AND date_available <= \''.$end.'\'
96    AND category_id NOT IN ('.$user['forbidden_categories'].')
97;';
98  return array_from_query($query, 'image_id');
99}
100
101/**
102 * updated categories between two dates, according to authorized categories
103 *
104 * @param string start (mysql datetime format)
105 * @param string end (mysql datetime format)
106 * @param string forbidden categories (comma separated)
107 * @return array element ids
108 */
109function updated_categories($start, $end)
110{
111  global $user;
112 
113  $query = '
114SELECT DISTINCT category_id
115  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON image_id = id
116  WHERE date_available > \''.$start.'\'
117    AND date_available <= \''.$end.'\'
118    AND category_id NOT IN ('.$user['forbidden_categories'].')
119;';
120  return array_from_query($query, 'category_id');
121}
122
123/**
124 * new registered users between two dates
125 *
126 * @param string start (mysql datetime format)
127 * @param string end (mysql datetime format)
128 * @return array user ids
129 */
130function new_users($start, $end)
131{
132  $query = '
133SELECT user_id
134  FROM '.USER_INFOS_TABLE.'
135  WHERE registration_date > \''.$start.'\'
136    AND registration_date <= \''.$end.'\'
137;';
138  return array_from_query($query, 'user_id');
139}
140
141/**
142 * currently waiting pictures
143 *
144 * @return array waiting ids
145 */
146function waiting_elements()
147{
148  $query = '
149SELECT id
150  FROM '.WAITING_TABLE.'
151  WHERE validated = \'false\'
152;';
153
154  return array_from_query($query, 'id');
155}
156
157/**
158 * What's new between two dates ?
159 *
160 * Informations : number of new comments, number of new elements, number of
161 * updated categories. Administrators are also informed about : number of
162 * unvalidated comments, number of new users (TODO : number of unvalidated
163 * elements)
164 *
165 * @param string start date (mysql datetime format)
166 * @param string end date (mysql datetime format)
167 */
168function news($start, $end)
169{
170  global $user;
171
172  $news = array();
173 
174  $nb_new_comments = count(new_comments($start, $end));
175  if ($nb_new_comments > 0)
176  {
177    array_push($news, sprintf(l10n('%d new comments'), $nb_new_comments));
178  }
179
180  $nb_new_elements = count(new_elements($start, $end));
181  if ($nb_new_elements > 0)
182  {
183    array_push($news, sprintf(l10n('%d new elements'), $nb_new_elements));
184  }
185
186  $nb_updated_categories = count(updated_categories($start, $end));
187  if ($nb_updated_categories > 0)
188  {
189    array_push($news, sprintf(l10n('%d categories updated'),
190                              $nb_updated_categories));
191  }
192 
193  if ('admin' == $user['status'])
194  {
195    $nb_unvalidated_comments = count(unvalidated_comments($end));
196    if ($nb_unvalidated_comments > 0)
197    {
198      array_push($news, sprintf(l10n('%d comments to validate'),
199                                $nb_unvalidated_comments));
200    }
201
202    $nb_new_users = count(new_users($start, $end));
203    if ($nb_new_users > 0)
204    {
205      array_push($news, sprintf(l10n('%d new users'), $nb_new_users));
206    }
207
208    $nb_waiting_elements = count(waiting_elements());
209    if ($nb_waiting_elements > 0)
210    {
211      array_push(
212        $news,
213        sprintf(
214          l10n('%d waiting elements'),
215          $nb_waiting_elements
216          )
217        );
218    }
219  }
220
221  return $news;
222}
223
224/**
225 * explodes a MySQL datetime format (2005-07-14 23:01:37) in fields "year",
226 * "month", "day", "hour", "minute", "second".
227 *
228 * @param string mysql datetime format
229 * @return array
230 */
231function explode_mysqldt($mysqldt)
232{
233  $date = array();
234  list($date['year'],
235       $date['month'],
236       $date['day'],
237       $date['hour'],
238       $date['minute'],
239       $date['second'])
240    = preg_split('/[-: ]/', $mysqldt);
241
242  return $date;
243}
244
245/**
246 * creates a Unix timestamp (number of seconds since 1970-01-01 00:00:00
247 * GMT) from a MySQL datetime format (2005-07-14 23:01:37)
248 *
249 * @param string mysql datetime format
250 * @return int timestamp
251 */
252function mysqldt_to_ts($mysqldt)
253{
254  $date = explode_mysqldt($mysqldt);
255  return mktime($date['hour'], $date['minute'], $date['second'],
256                $date['month'], $date['day'], $date['year']);
257}
258
259/**
260 * creates an ISO 8601 format date (2003-01-20T18:05:41+04:00) from Unix
261 * timestamp (number of seconds since 1970-01-01 00:00:00 GMT)
262 *
263 * function copied from Dotclear project http://dotclear.net
264 *
265 * @param int timestamp
266 * @return string ISO 8601 date format
267 */
268function ts_to_iso8601($ts)
269{
270  $tz = date('O',$ts);
271  $tz = substr($tz, 0, -2).':'.substr($tz, -2);
272  return date('Y-m-d\\TH:i:s',$ts).$tz;
273}
274
275// +-----------------------------------------------------------------------+
276// |                            initialization                             |
277// +-----------------------------------------------------------------------+
278
279// clean $user array (include/user.inc.php has been executed)
280$user = array();
281
282// echo '<pre>'.generate_key(50).'</pre>';
283if (isset($_GET['feed'])
284    and preg_match('/^[A-Za-z0-9]{50}$/', $_GET['feed']))
285{
286  $query = '
287SELECT uf.user_id AS id,
288       ui.status,
289       uf.last_check,
290       u.'.$conf['user_fields']['username'].' AS username
291  FROM '.USER_FEED_TABLE.' AS uf
292    INNER JOIN '.USER_INFOS_TABLE.' AS ui
293      ON ui.user_id = uf.user_id
294    INNER JOIN '.USERS_TABLE.' AS u
295      ON u.'.$conf['user_fields']['id'].' = uf.user_id
296  WHERE uf.id = \''.$_GET['feed'].'\'
297;';
298  $user = mysql_fetch_array(pwg_query($query));
299}
300else
301{
302  echo l10n('Unknown feed identifier');
303  exit();
304}
305
306$user['forbidden_categories'] = calculate_permissions($user['id'],
307                                                      $user['status']);
308if ('' == $user['forbidden_categories'])
309{
310  $user['forbidden_categories'] = '0';
311}
312
313list($dbnow) = mysql_fetch_row(pwg_query('SELECT NOW();'));
314
315include_once(PHPWG_ROOT_PATH.'include/feedcreator.class.php');
316
317$rss = new UniversalFeedCreator();
318
319$rss->title = $conf['gallery_title'].', notifications';
320$rss->title.= ' (as '.$user['username'].')';
321
322$rss->link = $conf['gallery_url'];
323
324// +-----------------------------------------------------------------------+
325// |                            Feed creation                              |
326// +-----------------------------------------------------------------------+
327
328$news = news($user['last_check'], $dbnow);
329
330if (count($news) > 0)
331{
332  $item = new FeedItem(); 
333  $item->title = sprintf(l10n('New on %s'), $dbnow);
334  $item->link = $conf['gallery_url'];
335 
336  // content creation
337  $item->description = '<ul>';
338  foreach ($news as $line)
339  {
340    $item->description.= '<li>'.$line.'</li>';
341  }
342  $item->description.= '</ul>';
343  $item->descriptionHtmlSyndicated = true;
344 
345  $item->date = ts_to_iso8601(mysqldt_to_ts($dbnow));
346  $item->author = 'PhpWebGallery notifier'; 
347 
348  $rss->addItem($item);
349}
350
351$query = '
352UPDATE '.USER_FEED_TABLE.'
353  SET last_check = \''.$dbnow.'\'
354  WHERE id = \''.$_GET['feed'].'\'
355;';
356pwg_query($query);
357
358// send XML feed
359echo $rss->saveFeed('RSS2.0', '', true);
360?>
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