aboutsummaryrefslogtreecommitdiffstats
path: root/include/functions_category.inc.php
blob: 548e5fe350a58891dbdadf8c3707847fa67f1c6e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
<?php
// +-----------------------------------------------------------------------+
// | PhpWebGallery - a PHP based picture gallery                           |
// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
// +-----------------------------------------------------------------------+
// | branch        : BSF (Best So Far)
// | file          : $RCSfile$
// | last update   : $Date$
// | last modifier : $Author$
// | revision      : $Revision$
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify  |
// | it under the terms of the GNU General Public License as published by  |
// | the Free Software Foundation                                          |
// |                                                                       |
// | 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      |
// | General Public License for more details.                              |
// |                                                                       |
// | You should have received a copy of the GNU General Public License     |
// | along with this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+

/**
 * Provides functions to handle categories.
 *
 * 
 */

/**
 * Is the category accessible to the connected user ?
 *
 * Note : if the user is not authorized to see this category, page creation
 * ends (exit command in this function)
 *
 * @param int category id to verify
 * @return void
 */
function check_restrictions($category_id)
{
  global $user, $lang;

  if (in_array($category_id, explode(',', $user['forbidden_categories'])))
  {
    echo '<div style="text-align:center;">'.$lang['access_forbiden'].'<br />';
    echo '<a href="./category.php">';
    echo $lang['thumbnails'].'</a></div>';
    exit();
  }
}

function get_categories_menu()
{
  global $page,$user;
  
  $infos = array('');
  
  $query = '
SELECT name,id,date_last,nb_images,global_rank
  FROM '.CATEGORIES_TABLE.'
  WHERE 1 = 1'; // stupid but permit using AND after it !
  if (!$user['expand'])
  {
    $query.= '
    AND (id_uppercat is NULL';
    if ( isset( $page['cat'] ) and is_numeric( $page['cat'] ) )
    {
      $query.= ' OR id_uppercat IN ('.$page['uppercats'].')';
    }
    $query.= ')';
  }
  if ($user['forbidden_categories'] != '')
  {
    $query.= '
    AND id NOT IN ('.$user['forbidden_categories'].')';
  }
  $query.= '
;';

  $result = pwg_query($query);
  $cats = array();
  while ($row = mysql_fetch_array($result))
  {
    array_push($cats, $row);
  }
  usort($cats, 'global_rank_compare');

  return get_html_menu_category($cats);
}

/**
 * returns the total number of elements viewable in the gallery by the
 * connected user
 *
 * @return int
 */
function count_user_total_images()
{
  global $user;

  $query = '
SELECT COUNT(DISTINCT(image_id)) as total
  FROM '.IMAGE_CATEGORY_TABLE.'
  WHERE category_id NOT IN ('.$user['forbidden_categories'].')
;';
  list($total) = mysql_fetch_array(pwg_query($query));
  
  return $total;
}

/**
 * Retrieve informations about a category in the database
 *
 * Returns an array with following keys :
 *
 *  - comment
 *  - dir : directory, might be empty for virtual categories
 *  - name : an array with indexes from 0 (lowest cat name) to n (most
 *           uppercat name findable)
 *  - nb_images
 *  - id_uppercat
 *  - site_id
 *  - 
 *
 * @param int category id
 * @return array
 */
function get_cat_info( $id )
{
  $infos = array('nb_images','id_uppercat','comment','site_id'
                 ,'dir','date_last','uploadable','status','visible'
                 ,'representative_picture_id','uppercats','commentable');
  
  $query = '
SELECT '.implode(',', $infos).'
  FROM '.CATEGORIES_TABLE.'
  WHERE id = '.$id.'
;';
  $row = mysql_fetch_array(pwg_query($query));

  $cat = array();
  foreach ($infos as $info)
  {
    if (isset($row[$info]))
    {
      $cat[$info] = $row[$info];
    }
    else
    {
      $cat[$info] = '';
    }
    // If the field is true or false, the variable is transformed into a
    // boolean value.
    if ($cat[$info] == 'true' or $cat[$info] == 'false')
    {
      $cat[$info] = get_boolean( $cat[$info] );
    }
  }
  $cat['comment'] = nl2br($cat['comment']);

  $names = array();
  $query = '
SELECT name,id
  FROM '.CATEGORIES_TABLE.'
  WHERE id IN ('.$cat['uppercats'].')
;';
  $result = pwg_query($query);
  while($row = mysql_fetch_array($result))
  {
    $names[$row['id']] = $row['name'];
  }

  // category names must be in the same order than uppercats list
  $cat['name'] = array();
  foreach (explode(',', $cat['uppercats']) as $cat_id)
  {
    $cat['name'][$cat_id] = $names[$cat_id];
  }
  
  return $cat;
}

// get_complete_dir returns the concatenation of get_site_url and
// get_local_dir
// Example : "pets > rex > 1_year_old" is on the the same site as the
// PhpWebGallery files and this category has 22 for identifier
// get_complete_dir(22) returns "./galleries/pets/rex/1_year_old/"
function get_complete_dir( $category_id )
{
  return get_site_url($category_id).get_local_dir($category_id);
}

// get_local_dir returns an array with complete path without the site url
// Example : "pets > rex > 1_year_old" is on the the same site as the
// PhpWebGallery files and this category has 22 for identifier
// get_local_dir(22) returns "pets/rex/1_year_old/"
function get_local_dir( $category_id )
{
  global $page;

  $uppercats = '';
  $local_dir = '';

  if ( isset( $page['plain_structure'][$category_id]['uppercats'] ) )
  {
    $uppercats = $page['plain_structure'][$category_id]['uppercats'];
  }
  else
  {
    $query = 'SELECT uppercats';
    $query.= ' FROM '.CATEGORIES_TABLE.' WHERE id = '.$category_id;
    $query.= ';';
    $row = mysql_fetch_array( pwg_query( $query ) );
    $uppercats = $row['uppercats'];
  }

  $upper_array = explode( ',', $uppercats );

  $database_dirs = array();
  $query = 'SELECT id,dir';
  $query.= ' FROM '.CATEGORIES_TABLE.' WHERE id IN ('.$uppercats.')';
  $query.= ';';
  $result = pwg_query( $query );
  while( $row = mysql_fetch_array( $result ) )
  {
    $database_dirs[$row['id']] = $row['dir'];
  }
  foreach ($upper_array as $id)
  {
    $local_dir.= $database_dirs[$id].'/';
  }

  return $local_dir;
}

// retrieving the site url : "http://domain.com/gallery/" or
// simply "./galleries/"
function get_site_url($category_id)
{
  global $page;

  $query = '
SELECT galleries_url
  FROM '.SITES_TABLE.' AS s,'.CATEGORIES_TABLE.' AS c
  WHERE s.id = c.site_id
    AND c.id = '.$category_id.'
;';
  $row = mysql_fetch_array(pwg_query($query));
  return $row['galleries_url'];
}

// returns an array of image orders available for users/visitors
function get_category_preferred_image_orders()
{
  global $conf;
  return array(
    array('Default', '', true),
    array(l10n('Average rate'), 'average_rate DESC', $conf['rate']),
    array(l10n('most_visited_cat'), 'hit DESC', true),
    array(l10n('Creation date'), 'date_creation DESC', true),
    array(l10n('Availability date'), 'date_available DESC', true),
    array(l10n('File name'), 'file ASC', true)
  );
}

function display_select_categories($categories,
                                   $selecteds,
                                   $blockname,
                                   $fullname = true)
{
  global $template;

  foreach ($categories as $category)
  {
    $selected = '';
    if (in_array($category['id'], $selecteds))
    {
      $selected = ' selected="selected"';
    }

    if ($fullname)
    {
      $option = get_cat_display_name_cache($category['uppercats'],
                                           '',
                                           false);
    }
    else
    {
      $option = str_repeat('&nbsp;',
                           (3 * substr_count($category['global_rank'], '.')));
      $option.= '- '.$category['name'];
    }
    
    $template->assign_block_vars(
      $blockname,
      array('SELECTED'=>$selected,
            'VALUE'=>$category['id'],
            'OPTION'=>$option
        ));
  }
}

function display_select_cat_wrapper($query, $selecteds, $blockname,
                                    $fullname = true)
{
  $result = pwg_query($query);
  $categories = array();
  if (!empty($result))
  {
    while ($row = mysql_fetch_array($result))
    {
      array_push($categories, $row);
    }
  }
  usort($categories, 'global_rank_compare');
  display_select_categories($categories, $selecteds, $blockname, $fullname);
}

/**
 * returns all subcategory identifiers of given category ids
 *
 * @param array ids
 * @return array
 */
function get_subcat_ids($ids)
{
  $query = '
SELECT DISTINCT(id)
  FROM '.CATEGORIES_TABLE.'
  WHERE ';
  foreach ($ids as $num => $category_id)
  {
    if ($num > 0)
    {
      $query.= '
    OR ';
    }
    $query.= 'uppercats REGEXP \'(^|,)'.$category_id.'(,|$)\'';
  }
  $query.= '
;';
  $result = pwg_query($query);

  $subcats = array();
  while ($row = mysql_fetch_array($result))
  {
    array_push($subcats, $row['id']);
  }
  return $subcats;
}

function global_rank_compare($a, $b)
{
  return strnatcasecmp($a['global_rank'], $b['global_rank']);
}

function rank_compare($a, $b)
{
  if ($a['rank'] == $b['rank'])
  {
    return 0;
  }

  return ($a['rank'] < $b['rank']) ? -1 : 1;
}
?>