/**
* Automatically clean-up all plugin data and remove the plugin DB tables
*
* NOTE: do not call directly, use new /admin/plugins.php?uninstall=component instead!
*
* @param string $type The plugin type, eg. 'mod', 'qtype', 'workshopgrading' etc.
* @param string $name The plugin name, eg. 'forum', 'multichoice', 'accumulative' etc.
* @uses global $OUTPUT to produce notices and other messages
* @return void
*/
function uninstall_plugin($type, $name)
{
global $CFG, $DB, $OUTPUT;
// This may take a long time.
core_php_time_limit::raise();
// Recursively uninstall all subplugins first.
$subplugintypes = core_component::get_plugin_types_with_subplugins();
if (isset($subplugintypes[$type])) {
$base = core_component::get_plugin_directory($type, $name);
if (file_exists("{$base}/db/subplugins.php")) {
$subplugins = array();
include "{$base}/db/subplugins.php";
foreach ($subplugins as $subplugintype => $dir) {
$instances = core_component::get_plugin_list($subplugintype);
foreach ($instances as $subpluginname => $notusedpluginpath) {
uninstall_plugin($subplugintype, $subpluginname);
}
}
}
}
$component = $type . '_' . $name;
// eg. 'qtype_multichoice' or 'workshopgrading_accumulative' or 'mod_forum'
if ($type === 'mod') {
$pluginname = $name;
// eg. 'forum'
if (get_string_manager()->string_exists('modulename', $component)) {
$strpluginname = get_string('modulename', $component);
} else {
$strpluginname = $component;
}
} else {
$pluginname = $component;
if (get_string_manager()->string_exists('pluginname', $component)) {
$strpluginname = get_string('pluginname', $component);
} else {
$strpluginname = $component;
}
}
echo $OUTPUT->heading($pluginname);
// Delete all tag areas, collections and instances associated with this plugin.
core_tag_area::uninstall($component);
// Custom plugin uninstall.
$plugindirectory = core_component::get_plugin_directory($type, $name);
$uninstalllib = $plugindirectory . '/db/uninstall.php';
if (file_exists($uninstalllib)) {
require_once $uninstalllib;
$uninstallfunction = 'xmldb_' . $pluginname . '_uninstall';
// eg. 'xmldb_workshop_uninstall()'
if (function_exists($uninstallfunction)) {
// Do not verify result, let plugin complain if necessary.
$uninstallfunction();
}
}
// Specific plugin type cleanup.
$plugininfo = core_plugin_manager::instance()->get_plugin_info($component);
if ($plugininfo) {
$plugininfo->uninstall_cleanup();
core_plugin_manager::reset_caches();
}
$plugininfo = null;
// perform clean-up task common for all the plugin/subplugin types
//delete the web service functions and pre-built services
require_once $CFG->dirroot . '/lib/externallib.php';
external_delete_descriptions($component);
// delete calendar events
$DB->delete_records('event', array('modulename' => $pluginname));
// Delete scheduled tasks.
$DB->delete_records('task_scheduled', array('component' => $pluginname));
// Delete Inbound Message datakeys.
$DB->delete_records_select('messageinbound_datakeys', 'handler IN (SELECT id FROM {messageinbound_handlers} WHERE component = ?)', array($pluginname));
// Delete Inbound Message handlers.
$DB->delete_records('messageinbound_handlers', array('component' => $pluginname));
// delete all the logs
$DB->delete_records('log', array('module' => $pluginname));
// delete log_display information
$DB->delete_records('log_display', array('component' => $component));
// delete the module configuration records
unset_all_config_for_plugin($component);
if ($type === 'mod') {
unset_all_config_for_plugin($pluginname);
}
// delete message provider
message_provider_uninstall($component);
// delete the plugin tables
$xmldbfilepath = $plugindirectory . '/db/install.xml';
drop_plugin_tables($component, $xmldbfilepath, false);
if ($type === 'mod' or $type === 'block') {
// non-frankenstyle table prefixes
drop_plugin_tables($name, $xmldbfilepath, false);
}
// delete the capabilities that were defined by this module
capabilities_cleanup($component);
// remove event handlers and dequeue pending events
events_uninstall($component);
// Delete all remaining files in the filepool owned by the component.
$fs = get_file_storage();
$fs->delete_component_files($component);
// Finally purge all caches.
purge_all_caches();
// Invalidate the hash used for upgrade detections.
set_config('allversionshash', '');
echo $OUTPUT->notification(get_string('success'), 'notifysuccess');
}
