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109 lines
4.2 KiB
109 lines
4.2 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* Hook to limit session resubscriptions
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*
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* @author Imanol Losada Oriol <imanol.losada@beeznest.com>
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* @package chamilo.plugin.resubscription
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*/
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class HookResubscription extends HookObserver implements HookResubscribeObserverInterface
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{
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/**
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* Class constructor
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*/
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public function __construct()
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{
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parent::__construct(
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'plugin/resubscription/src/Resubscription.php', 'resubscription'
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);
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}
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/**
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* Limit session resubscription when a Chamilo user is resubscribed to a session
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* @param HookCreateUserEventInterface $hook The hook
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*/
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public function hookResubscribe(HookResubscribeEventInterface $hook)
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{
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$data = $hook->getEventData();
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if ($data['type'] === HOOK_EVENT_TYPE_PRE) {
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$resubscriptionLimit = Resubscription::create()->get('resubscription_limit');
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// Initialize variables as a calendar year by default
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$limitDateFormat = 'Y-01-01';
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$limitDate = gmdate($limitDateFormat);
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$resubscriptionOffset = "1 year";
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// No need to use a 'switch' with only two options so an 'if' is enough.
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// However this could change if the number of options increases
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if ($resubscriptionLimit === 'natural_year') {
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$limitDateFormat = 'Y-m-d';
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$limitDate = gmdate($limitDateFormat);
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$limitDate = gmdate($limitDateFormat, strtotime("$limitDate -$resubscriptionOffset"));
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}
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$join = " INNER JOIN ".Database::get_main_table(TABLE_MAIN_SESSION)."ON id = session_id";
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// User sessions and courses
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$userSessions = Database::select(
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'session_id, date_end',
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Database::get_main_table(TABLE_MAIN_SESSION_USER).$join,
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array(
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'where' => array(
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'user_id = ? AND date_end >= ?' => array(
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api_get_user_id(),
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$limitDate
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)
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),
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'order' => 'date_end DESC'
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)
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);
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$userSessionCourses = array();
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foreach ($userSessions as $userSession) {
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$userSessionCourseResult = Database::select(
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'c_id',
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Database::get_main_table(TABLE_MAIN_SESSION_COURSE),
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array(
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'where' => array(
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'session_id = ?' => array(
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$userSession['session_id']
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)
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)
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)
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);
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foreach ($userSessionCourseResult as $userSessionCourse) {
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if (!isset($userSessionCourses[$userSessionCourse['c_id']])) {
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$userSessionCourses[$userSessionCourse['c_id']] = $userSession['date_end'];
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}
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}
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}
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// Current session and courses
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$currentSessionCourseResult = Database::select(
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'c_id',
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Database::get_main_table(TABLE_MAIN_SESSION_COURSE),
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array(
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'where' => array(
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'session_id = ?' => array(
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$data['session_id']
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)
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)
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)
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);
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// Check if current course code matches with one of the users
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foreach ($currentSessionCourseResult as $currentSessionCourse) {
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if (isset($userSessionCourses[$currentSessionCourse['c_id']])) {
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$endDate = $userSessionCourses[$currentSessionCourse['c_id']];
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$resubscriptionDate = gmdate($limitDateFormat, strtotime($endDate." +$resubscriptionOffset"));
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$icon = Display::return_icon('students.gif', get_lang('Student'));
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$canResubscribeFrom = sprintf(get_plugin_lang('CanResubscribeFromX', 'resubscription'), $resubscriptionDate);
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throw new Exception(Display::label($icon.' '.$canResubscribeFrom, "info"));
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}
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}
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}
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}
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}
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