1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | User Tags - a plugin for Piwigo | |
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4 | // +-----------------------------------------------------------------------+ |
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5 | // | Copyright(C) 2010-2013 Nicolas Roudaire http://www.nikrou.net | |
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6 | // +-----------------------------------------------------------------------+ |
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7 | // | This program is free software; you can redistribute it and/or modify | |
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8 | // | it under the terms of the GNU General Public License version 2 as | |
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9 | // | published by the Free Software Foundation | |
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10 | // | | |
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11 | // | This program is distributed in the hope that it will be useful, but | |
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12 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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13 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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14 | // | General Public License for more details. | |
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15 | // | | |
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16 | // | You should have received a copy of the GNU General Public License | |
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17 | // | along with this program; if not, write to the Free Software | |
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18 | // | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | |
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19 | // | MA 02110-1301 USA. | |
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20 | // +-----------------------------------------------------------------------+ |
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21 | |
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22 | include_once(PHPWG_ROOT_PATH.'admin/include/functions.php'); |
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23 | |
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24 | class t4u_Ws |
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25 | { |
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26 | public function addMethods($arr) { |
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27 | $service = &$arr[0]; |
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28 | |
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29 | $service->addMethod(T4U_WS.'list', array($this, 'tagsList'), |
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30 | array('q' => array()), |
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31 | 'retrieves a list of tags than can be filtered' |
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32 | ); |
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33 | |
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34 | $service->addMethod(T4U_WS.'update', array($this, 'updateTags'), |
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35 | array('image_id' => array(), |
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36 | 'tags' => array('default' => array()) |
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37 | ), |
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38 | 'Updates (add or remove) tags associated to an image (POST method only)' |
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39 | ); |
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40 | } |
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41 | |
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42 | public function tagsList($params, &$service) { |
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43 | $query = 'SELECT id AS tag_id, name AS tag_name FROM '.TAGS_TABLE; |
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44 | if (!empty($params['q'])) { |
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45 | $query .= sprintf(' WHERE LOWER(name) like \'%%%s%%\'', strtolower(pwg_db_real_escape_string($params['q']))); |
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46 | } |
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47 | |
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48 | $tagslist = $this->__makeTagsList($query); |
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49 | unset($tagslist['__associative_tags']); |
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50 | $cmp = create_function('$a,$b', 'return strcasecmp($a[\'name\'], $b[\'name\']);'); |
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51 | usort($tagslist, $cmp); |
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52 | |
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53 | return $tagslist; |
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54 | } |
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55 | |
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56 | public function updateTags($params, &$service) { |
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57 | if (!$service->isPost()) { |
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58 | return new PwgError(405, "This method requires HTTP POST"); |
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59 | } |
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60 | |
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61 | if (!t4u_Config::getInstance()->hasPermission('add') && !t4u_Config::getInstance()->hasPermission('delete')) { |
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62 | return array('error' => l10n('You are not allowed to add nor delete tags')); |
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63 | } |
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64 | |
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65 | if (empty($params['tags'])) { |
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66 | $params['tags'] = array(); |
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67 | } |
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68 | $message = ''; |
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69 | |
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70 | $query = 'SELECT tag_id, name AS tag_name'; |
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71 | $query .= ' FROM '.IMAGE_TAG_TABLE.' AS it'; |
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72 | $query .= ' JOIN '.TAGS_TABLE.' AS t ON t.id = it.tag_id'; |
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73 | $query .= sprintf(' WHERE image_id = %s', pwg_db_real_escape_string($params['image_id'])); |
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74 | |
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75 | $current_tags = $this->__makeTagsList($query); |
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76 | $current_tags_ids = array_keys($current_tags['__associative_tags']); |
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77 | if (empty($params['tags'])) { |
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78 | $tags_to_associate = array(); |
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79 | } else { |
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80 | $tags_to_associate = explode(',', $params['tags']); |
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81 | } |
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82 | |
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83 | $removed_tags = array_diff($current_tags_ids, $tags_to_associate); |
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84 | $new_tags = array_diff($tags_to_associate, $current_tags_ids); |
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85 | |
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86 | if (count($removed_tags)>0) { |
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87 | if (!t4u_Config::getInstance()->hasPermission('delete')) { |
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88 | $message['error'][] = l10n('You are not allowed to delete tags'); |
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89 | } else { |
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90 | $message['info'] = l10n('Tags updated'); |
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91 | } |
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92 | } |
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93 | if (count($new_tags)>0) { |
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94 | if (!t4u_Config::getInstance()->hasPermission('add')) { |
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95 | $message['error'][] = l10n('You are not allowed to add tags'); |
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96 | $tags_to_associate = array_diff($tags_to_associate, $new_tags); |
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97 | } else { |
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98 | $message['info'] = l10n('Tags updated'); |
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99 | } |
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100 | } |
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101 | |
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102 | if (empty($message['error'])) { |
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103 | if (empty($tags_to_associate)) { // remove all tags for an image |
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104 | $query = 'DELETE FROM '.IMAGE_TAG_TABLE; |
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105 | $query .= sprintf(' WHERE image_id = %d', pwg_db_real_escape_string($params['image_id'])); |
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106 | pwg_query($query); |
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107 | } else { |
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108 | $tag_ids = get_tag_ids(implode(',', $tags_to_associate)); |
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109 | set_tags($tag_ids, $params['image_id']); |
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110 | } |
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111 | } |
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112 | |
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113 | return $message; |
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114 | } |
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115 | |
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116 | private function __makeTagsList($query) { |
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117 | $result = pwg_query($query); |
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118 | |
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119 | $tagslist = array(); |
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120 | $associative_tags = array(); |
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121 | while ($row = pwg_db_fetch_assoc($result)) { |
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122 | $associative_tags['~~'.$row['tag_id'].'~~'] = $row['tag_name']; |
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123 | $tagslist[] = array('id' => '~~'.$row['tag_id'].'~~', |
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124 | 'name' => $row['tag_name'] |
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125 | ); |
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126 | |
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127 | } |
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128 | $tagslist['__associative_tags'] = $associative_tags; |
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129 | |
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130 | return $tagslist; |
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131 | } |
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132 | } |
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