XOOPS /
XoopsCore
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Notifications often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Notifications, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 21 | class Notifications extends Xoops\Module\Helper\HelperAbstract |
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| 22 | { |
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| 23 | /** |
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| 24 | * Init the module |
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| 25 | * |
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| 26 | * @return null|void |
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| 27 | */ |
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| 28 | public function init() |
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| 29 | { |
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| 30 | $this->setDirname('notifications'); |
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| 31 | define('NOTIFICATIONS_MODE_SENDALWAYS', 0); |
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| 32 | define('NOTIFICATIONS_MODE_SENDONCETHENDELETE', 1); |
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| 33 | define('NOTIFICATIONS_MODE_SENDONCETHENWAIT', 2); |
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| 34 | define('NOTIFICATIONS_MODE_WAITFORLOGIN', 3); |
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| 35 | |||
| 36 | define('NOTIFICATIONS_METHOD_DISABLE', 0); |
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| 37 | define('NOTIFICATIONS_METHOD_PM', 1); |
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| 38 | define('NOTIFICATIONS_METHOD_EMAIL', 2); |
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| 39 | |||
| 40 | define('NOTIFICATIONS_DISABLE', 0); |
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| 41 | define('NOTIFICATIONS_ENABLEBLOCK', 1); |
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| 42 | define('NOTIFICATIONS_ENABLEINLINE', 2); |
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| 43 | define('NOTIFICATIONS_ENABLEBOTH', 3); |
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| 44 | } |
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| 45 | |||
| 46 | /** |
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| 47 | * @return string |
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| 48 | */ |
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| 49 | public static function getInstance() |
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| 53 | |||
| 54 | /** |
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| 55 | * @return NotificationsNotificationHandler |
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| 56 | */ |
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| 57 | public function getHandlerNotification() |
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| 61 | |||
| 62 | /** |
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| 63 | * @param string $style |
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| 64 | * @param null|string $module_dirname |
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| 65 | * |
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| 66 | * @return bool |
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| 67 | */ |
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| 68 | public function enabled($style, $module_dirname = null) |
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| 69 | { |
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| 70 | $xoops = Xoops::getInstance(); |
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| 71 | if ($status = $xoops->getModuleConfig('notifications_enabled')) { |
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| 72 | } else { |
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| 73 | if (!isset($module_dirname)) { |
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| 74 | return false; |
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| 75 | } |
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| 76 | |||
| 77 | if (!$status = $xoops->getModuleConfig('notifications_enabled', $module_dirname)) { |
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| 78 | return false; |
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| 79 | } |
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| 80 | } |
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| 81 | if (($style === 'block') && ($status == NOTIFICATIONS_ENABLEBLOCK || $status == NOTIFICATIONS_ENABLEBOTH)) { |
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| 82 | return true; |
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| 83 | } |
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| 84 | if (($style === 'inline') && ($status == NOTIFICATIONS_ENABLEINLINE || $status == NOTIFICATIONS_ENABLEBOTH)) { |
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| 85 | return true; |
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| 86 | } |
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| 87 | |||
| 88 | return false; |
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| 89 | } |
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| 90 | |||
| 91 | /** |
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| 92 | * @param string $category |
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| 93 | * @param int $item_id |
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| 94 | * @param string $dirname Module dirname |
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| 95 | * |
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| 96 | * @return array|bool |
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| 97 | */ |
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| 98 | View Code Duplication | public function getItem($category, $item_id, $dirname = null) |
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| 99 | { |
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| 100 | $xoops = Xoops::getInstance(); |
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| 101 | if (!isset($dirname)) { |
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| 102 | $dirname = $xoops->module->getVar('dirname'); |
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| 103 | } |
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| 104 | |||
| 105 | /* @var $plugin NotificationsPluginInterface */ |
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| 106 | if ($plugin = \Xoops\Module\Plugin::getPlugin($dirname, 'notifications')) { |
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| 107 | return $plugin->item($category, (int)($item_id)); |
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| 108 | } |
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| 109 | return false; |
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| 110 | } |
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| 111 | |||
| 112 | /** |
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| 113 | * @param string $category |
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| 114 | * @param int $item_id |
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| 115 | * @param string $event |
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| 116 | * @param string $dirname Module dirname |
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| 117 | * |
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| 118 | * @return array|bool |
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| 119 | */ |
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| 120 | View Code Duplication | public function getTags($category, $item_id, $event, $dirname = null) |
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| 121 | { |
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| 122 | $xoops = Xoops::getInstance(); |
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| 123 | if (!isset($dirname)) { |
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| 124 | $dirname = $xoops->module->getVar('dirname'); |
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| 125 | } |
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| 126 | |||
| 127 | /* @var $plugin NotificationsPluginInterface */ |
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| 128 | if ($plugin = \Xoops\Module\Plugin::getPlugin($dirname, 'notifications')) { |
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| 129 | return $plugin->tags($category, (int)($item_id), $event, $dirname); |
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| 130 | } |
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| 131 | return array(); |
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| 132 | } |
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| 133 | |||
| 134 | /** |
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| 135 | * Get an associative array of info for a particular notification |
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| 136 | * category in the selected module. If no category is selected, |
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| 137 | * return an array of info for all categories. |
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| 138 | * |
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| 139 | * @param string $category_name Category name (default all categories) |
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| 140 | * @param string $dirname ID of the module (default current module) |
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| 141 | * |
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| 142 | * @return mixed |
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| 143 | */ |
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| 144 | public function getCategory($category_name = '', $dirname = null) |
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| 145 | { |
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| 146 | $xoops = Xoops::getInstance(); |
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| 147 | if (!isset($dirname)) { |
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| 148 | $dirname = $xoops->module->getVar('dirname'); |
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| 149 | } |
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| 150 | |||
| 151 | /* @var $plugin NotificationsPluginInterface */ |
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| 152 | if ($plugin = \Xoops\Module\Plugin::getPlugin($dirname, 'notifications')) { |
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| 153 | $categories = $plugin->categories(); |
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| 154 | if (empty($category_name)) { |
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| 155 | return $categories; |
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| 156 | } |
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| 157 | foreach ($categories as $category) { |
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| 158 | if ($category['name'] == $category_name) { |
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| 159 | return $category; |
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| 160 | } |
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| 161 | } |
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| 162 | } |
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| 163 | return false; |
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| 164 | } |
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| 165 | |||
| 166 | /** |
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| 167 | * Get associative array of info for the category to which comment events |
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| 168 | * belong. |
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| 169 | * |
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| 170 | * todo, this belongs in the comment module no? - trabis |
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| 171 | * |
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| 172 | * @param string $dirname Dirname of the module (default current module) |
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| 173 | * |
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| 174 | * @return mixed Associative array of category info |
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| 175 | */ |
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| 176 | public function getCommentsCategory($dirname = null) |
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| 177 | { |
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| 178 | $ret = array(); |
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| 179 | $all_categories = $this->getCategory('', $dirname); |
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| 180 | if (empty($all_categories)) { |
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| 181 | return $ret; |
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| 182 | } |
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| 183 | foreach ($all_categories as $category) { |
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| 184 | $all_events = $this->getEvents($category['name'], false, $dirname); |
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| 185 | if (empty($all_events)) { |
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| 186 | continue; |
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| 187 | } |
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| 188 | foreach ($all_events as $event) { |
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| 189 | if ($event['name'] === 'comment') { |
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| 190 | return $category; |
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| 191 | } |
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| 192 | } |
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| 193 | } |
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| 194 | return $ret; |
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| 195 | } |
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| 196 | |||
| 197 | // TODO: some way to include or exclude admin-only events... |
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| 198 | |||
| 199 | /** |
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| 200 | * Get an array of info for all events (each event has associative array) |
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| 201 | * in the selected category of the selected module. |
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| 202 | * |
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| 203 | * @param string $category_name Category name |
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| 204 | * @param bool $enabled_only If true, return only enabled events |
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| 205 | * @param string $dirname Dirname of the module (default current module) |
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| 206 | * |
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| 207 | * @return mixed |
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| 208 | */ |
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| 209 | public function getEvents($category_name, $enabled_only, $dirname = null) |
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| 348 | |||
| 349 | /** |
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| 350 | * Determine whether a particular notification event is enabled. |
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| 351 | * Depends on module config options. |
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| 352 | * |
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| 353 | * @todo Check that this works correctly for comment and other |
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| 354 | * events which depend on additional config options... |
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| 355 | * |
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| 356 | * @param array &$category Category info array |
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| 357 | * @param array &$event Event info array |
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| 358 | * @param string $dirname Module |
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| 359 | * |
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| 360 | * @return bool |
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| 361 | **/ |
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| 362 | public function eventEnabled(&$category, &$event, $dirname) |
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| 376 | |||
| 377 | /** |
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| 378 | * Get associative array of info for the selected event in the selected |
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| 379 | * category (for the selected module). |
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| 380 | * |
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| 381 | * @param string $category_name Notification category |
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| 382 | * @param string $event_name Notification event |
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| 383 | * @param string $module_dirname Dirname of the module (default current module) |
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| 384 | * |
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| 385 | * @return mixed |
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| 386 | */ |
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| 387 | public function getEvent($category_name, $event_name, $module_dirname = null) |
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| 388 | { |
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| 389 | $all_events = $this->getEvents($category_name, false, $module_dirname); |
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| 390 | foreach ($all_events as $event) { |
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| 391 | if ($event['name'] == $event_name) { |
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| 392 | return $event; |
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| 393 | } |
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| 394 | } |
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| 395 | return false; |
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| 396 | } |
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| 397 | |||
| 398 | /** |
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| 399 | * Get an array of associative info arrays for subscribable categories |
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| 400 | * for the selected module. |
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| 401 | * |
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| 402 | * @param string $module_dirname ID of the module |
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| 403 | * |
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| 404 | * @return mixed |
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| 405 | */ |
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| 406 | public function getSubscribableCategories($module_dirname = null) |
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| 407 | { |
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| 408 | $all_categories = $this->getCategory('', $module_dirname); |
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| 409 | |||
| 410 | // FIXME: better or more standardized way to do this? |
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| 411 | $script_url = explode('/', $_SERVER['PHP_SELF']); |
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| 412 | $script_name = $script_url[count($script_url) - 1]; |
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| 413 | |||
| 414 | $sub_categories = array(); |
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| 415 | foreach ($all_categories as $category) { |
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| 416 | // Check the script name |
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| 417 | $subscribe_from = $category['subscribe_from']; |
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| 418 | if (!is_array($subscribe_from)) { |
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| 419 | if ($subscribe_from === '*') { |
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| 420 | $subscribe_from = array( |
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| 421 | $script_name |
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| 422 | ); |
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| 423 | // FIXME: this is just a hack: force a match |
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| 424 | } else { |
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| 425 | $subscribe_from = array( |
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| 426 | $subscribe_from |
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| 427 | ); |
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| 428 | } |
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| 429 | } |
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| 430 | if (!in_array($script_name, $subscribe_from)) { |
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| 431 | continue; |
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| 432 | } |
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| 433 | // If 'item_name' is missing, automatic match. Otherwise |
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| 434 | // check if that argument exists... |
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| 435 | if (empty($category['item_name'])) { |
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| 436 | $category['item_name'] = ''; |
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| 437 | $category['item_id'] = 0; |
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| 438 | $sub_categories[] = $category; |
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| 439 | } else { |
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| 440 | $item_name = $category['item_name']; |
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| 441 | $id = ($item_name != '' && isset($_GET[$item_name])) ? (int)($_GET[$item_name]) : 0; |
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| 442 | if ($id > 0) { |
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| 443 | $category['item_id'] = $id; |
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| 444 | $sub_categories[] = $category; |
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| 445 | } |
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| 446 | } |
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| 447 | } |
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| 448 | return $sub_categories; |
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| 449 | } |
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| 450 | |||
| 451 | /** |
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| 452 | * Generate module config info for a particular category, event pair. |
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| 453 | * The selectable config options are given names depending on the |
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| 454 | * category and event names, and the text depends on the category |
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| 455 | * and event titles. These are pieced together in this function in |
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| 456 | * case we wish to alter the syntax. |
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| 457 | * |
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| 458 | * @param array &$category Array of category info |
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| 459 | * @param array &$event Array of event info |
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| 460 | * @param string $type The particular name to generate |
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| 461 | * |
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| 462 | * @return bool|string |
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| 463 | */ |
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| 464 | public function generateConfig(&$category, &$event, $type) |
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| 479 | |||
| 480 | /** |
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| 481 | * @param XoopsModule $module |
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| 482 | */ |
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| 483 | View Code Duplication | public function insertModuleRelations(XoopsModule $module) |
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| 484 | { |
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| 485 | $xoops = Xoops::getInstance(); |
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| 486 | $config_handler = $xoops->getHandlerConfig(); |
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| 487 | $configs = $this->getPluginableConfigs($module); |
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| 521 | |||
| 522 | /** |
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| 523 | * @param XoopsModule $module |
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| 524 | */ |
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| 525 | View Code Duplication | public function deleteModuleRelations(XoopsModule $module) |
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| 544 | |||
| 545 | /** |
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| 546 | * @param XoopsModule $module |
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| 547 | * |
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| 548 | * @return array |
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| 549 | */ |
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| 550 | public function getPluginableConfigs(XoopsModule $module) |
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| 595 | } |
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| 596 |
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Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: