function lti_sync_enrolments()
{
global $wpdb, $blog_id;
// Load class
require_once 'LTI_User_List_Table.php';
// Load Membership Library functions
require_once 'MembershipLibrary.php';
// Create $_SESSION variables if not present
if (empty($_SESSION[LTI_SESSION_PREFIX . 'all'])) {
$_SESSION[LTI_SESSION_PREFIX . 'all'] = array();
}
if (empty($_SESSION[LTI_SESSION_PREFIX . 'provision'])) {
$_SESSION[LTI_SESSION_PREFIX . 'provision'] = array();
}
if (empty($_SESSION[LTI_SESSION_PREFIX . 'new_to_blog'])) {
$_SESSION[LTI_SESSION_PREFIX . 'new_to_blog'] = array();
}
if (empty($_SESSION[LTI_SESSION_PREFIX . 'newadmins'])) {
$_SESSION[LTI_SESSION_PREFIX . 'newadmins'] = array();
}
if (empty($_SESSION[LTI_SESSION_PREFIX . 'changed'])) {
$_SESSION[LTI_SESSION_PREFIX . 'changed'] = array();
}
if (empty($_SESSION[LTI_SESSION_PREFIX . 'role_changed'])) {
$_SESSION[LTI_SESSION_PREFIX . 'role_changed'] = array();
}
if (empty($_SESSION[LTI_SESSION_PREFIX . 'remove'])) {
$_SESSION[LTI_SESSION_PREFIX . 'remove'] = array();
}
if (empty($_SESSION[LTI_SESSION_PREFIX . 'nochanges'])) {
$_SESSION[LTI_SESSION_PREFIX . 'nochanges'] = 0;
}
// Set up help tab
$screen = get_current_screen();
$screen->add_help_tab(array('id' => 'my_help_tab', 'title' => __('My Help Tab', 'lti-text'), 'content' => '<p>' . __('Descriptive content that will show in My Help Tab-body goes here.', 'lti-text') . '</p>'));
// Get instance of LTI_User_List_Table and get the current action
$ltiuser = new LTI_User_List_Table();
$choice = $ltiuser->current_action();
$consumer = new LTI_Tool_Consumer($_SESSION[LTI_SESSION_PREFIX . 'userkey'], array($wpdb->base_prefix));
$resource_link = new LTI_Resource_Link($consumer, $_SESSION[LTI_SESSION_PREFIX . 'userresourcelink']);
if (!$resource_link->hasMembershipsService()) {
echo '<h2>' . __('No memberships service', 'lti-text') . '</h2>';
return;
}
// Deal with current action
switch ($choice) {
case 'continue':
// Get the users from the resource link
$lti_users = $resource_link->doMembershipsService();
if (!$lti_users) {
echo '<h2>' . __('Error on Synchronisation', 'lti-text') . '</h2>';
echo '<p>' . sprintf(__('Error returned from consumer (%s)', 'lti-text'), $consumer->name) . '</p>';
echo '<p>' . sprintf(__('Request to consumer: %s', 'lti-text'), '<br />' . urldecode(str_replace('&', '<br />', $resource_link->ext_request))) . '</p>';
echo '<p>' . sprintf(__('Response from consumer: %s', 'lti-text'), '<br />' . $resource_link->ext_response) . '</p>';
return;
}
// Get straight-forward list to work with in WordPress
$membership_consumer = lti_create_user_list($lti_users);
// Get current membership of this blog
$wp_user_search = new WP_User_Query($blog_id);
$current_members = $wp_user_search->get_results();
// Create the various lists
$membership_consumer = lti_create_membership_lists($membership_consumer);
// Assign list to $_SESSION variables
$_SESSION[LTI_SESSION_PREFIX . 'all'] = serialize($membership_consumer);
$_SESSION[LTI_SESSION_PREFIX . 'provision'] = serialize(lti_get_members($_SESSION[LTI_SESSION_PREFIX . 'all'], 'provision'));
$_SESSION[LTI_SESSION_PREFIX . 'new_to_blog'] = serialize(lti_get_members($_SESSION[LTI_SESSION_PREFIX . 'all'], 'new_to_blog'));
$_SESSION[LTI_SESSION_PREFIX . 'newadmins'] = serialize(lti_get_members($_SESSION[LTI_SESSION_PREFIX . 'all'], 'newadmins'));
$_SESSION[LTI_SESSION_PREFIX . 'changed'] = serialize(lti_get_members($_SESSION[LTI_SESSION_PREFIX . 'all'], 'changed'));
$_SESSION[LTI_SESSION_PREFIX . 'role_changed'] = serialize(lti_get_members($_SESSION[LTI_SESSION_PREFIX . 'all'], 'rchanged'));
// Blog members for removal need to be handled differently
$_SESSION[LTI_SESSION_PREFIX . 'remove'] = serialize(lti_deleted_members($membership_consumer, $current_members));
case 'all':
// Not currently used
// Display all the members from the consumer
lti_display($_SESSION[LTI_SESSION_PREFIX . 'all'], $ltiuser);
break;
case 'provision':
// Not currently used
echo "<h2>" . __('Membership Synchronisation - New Members', 'lti-text') . "</h2>";
if (!empty($_SESSION[LTI_SESSION_PREFIX . 'provision'])) {
lti_display($_SESSION[LTI_SESSION_PREFIX . 'provision'], $ltiuser);
}
break;
// Display the various lists
// Display the various lists
case 'new_to_blog':
// Not currently used
echo "<h2>" . __('Membership Synchronisation - New Blog Members', 'lti-text') . "</h2>";
if (!empty($_SESSION[LTI_SESSION_PREFIX . 'new_to_blog'])) {
lti_display($_SESSION[LTI_SESSION_PREFIX . 'new_to_blog'], $ltiuser);
}
break;
case 'newadmins':
echo "<h2>" . __('Membership Synchronisation - New Administrators to Blog', 'lti-text') . "</h2>";
if (!empty($_SESSION[LTI_SESSION_PREFIX . 'newadmins'])) {
lti_display($_SESSION[LTI_SESSION_PREFIX . 'newadmins'], $ltiuser);
}
break;
case 'changed':
// Not currently used
echo "<h2>" . __('Membership Synchronisation - Changed Members', 'lti-text') . "</h2>";
if (!empty($_SESSION[LTI_SESSION_PREFIX . 'changed'])) {
lti_display($_SESSION[LTI_SESSION_PREFIX . 'changed'], $ltiuser);
}
break;
case 'rchanged':
echo "<h2>" . __('Membership Synchronisation - Role Changed', 'lti-text') . "</h2>";
if (!empty($_SESSION[LTI_SESSION_PREFIX . 'role_changed'])) {
lti_display($_SESSION[LTI_SESSION_PREFIX . 'role_changed'], $ltiuser);
}
break;
case 'remove':
echo "<h2>" . __('Membership Synchronisation - Members for Removal from Blog', 'lti-text') . "</h2>";
if (!empty($_SESSION[LTI_SESSION_PREFIX . 'remove'])) {
lti_display($_SESSION[LTI_SESSION_PREFIX . 'remove'], $ltiuser);
}
break;
case 'error':
echo "<h2>" . __('Synchronisation Errors', 'lti-text') . "</h2>";
echo "<p>" . $_SESSION[LTI_SESSION_PREFIX . 'error'] . "</p>";
echo "<p>" . __('Remaining users from consumer added', 'lti-text') . "</p>";
$_SESSION[LTI_SESSION_PREFIX . 'error'] = '';
break;
default:
// If consumer has setting service then get date/time of last synchronisation
$last_sync = '';
if ($resource_link->hasSettingService()) {
$last_sync = $resource_link->doSettingService(LTI_Resource_Link::EXT_READ, NULL);
}
// Simply produce descriptive text when page first encountered.
?>
<h2><?php
_e('Membership Synchronisation', 'lti-text');
?>
</h2>
<p><?php
_e('This page allows you to update this group with any changes to the enrolments in the course
which is the source for this group. These updates may include:', 'lti-text');
?>
</p>
<ul style="list-style-type: disc; margin-left: 15px; padding-left: 15px;">
<li><?php
_e('new members', 'lti-text');
?>
</li>
<li><?php
_e('changes to the names of existing members', 'lti-text');
?>
</li>
<li><?php
_e('changes to the type (instructor or student) of an existing member', 'lti-text');
?>
</li>
<li><?php
_e('deletion of members which no longer exist in the course', 'lti-text');
?>
</li>
</ul>
<p><?php
_e('Click on the <i>Continue</i> to obtain a list of the changes to be processed. The updates
will not be made until you confirm them.', 'lti-text');
?>
</p>
<?php
if (!empty($last_sync)) {
echo '<p>' . sprintf(__('Last Synchronisation: %s', 'lti-text'), $last_sync) . '</p>';
}
?>
<form method="post" action="<?php
get_admin_url();
?>
users.php?page=lti_sync_enrolments">
<input type="hidden" name="action" value="continue" />
<p class="submit">
<input id="membership" class="button-primary" type="submit" value="<?php
_e('Continue', 'lti-text');
?>
" name="membership">
</p>
</form>
<?php
// Set sessions changes to 0
$_SESSION[LTI_SESSION_PREFIX . 'nochanges'] = 0;
}
}
