/**
* This function saves all the invitations of course users and additional users in the database
* and sends the invitations by email
*
* @param array Users array can be both a list of course uids AND a list of additional emailaddresses
* @param string Title of the invitation, used as the title of the mail
* @param string Text of the invitation, used as the text of the mail.
* The text has to contain a **link** string or this will automatically be added to the end
*
* @author Patrick Cool <*****@*****.**>, Ghent University
* @author Julio Montoya - Adding auto-generated link support
* @version January 2007
*
*/
public static function saveInvitations($users_array, $invitation_title, $invitation_text, $reminder = 0, $sendmail = 0, $remindUnAnswered = 0)
{
if (!is_array($users_array)) {
// Should not happen
return 0;
}
// Getting the survey information
$survey_data = SurveyManager::get_survey($_GET['survey_id']);
$survey_invitations = SurveyUtil::get_invitations($survey_data['survey_code']);
$already_invited = SurveyUtil::get_invited_users($survey_data['code']);
// Remind unanswered is a special version of remind all reminder
$exclude_users = array();
if ($remindUnAnswered == 1) {
// Remind only unanswered users
$reminder = 1;
$exclude_users = SurveyManager::get_people_who_filled_survey($_GET['survey_id']);
}
$counter = 0;
// Nr of invitations "sent" (if sendmail option)
$course_id = api_get_course_int_id();
$session_id = api_get_session_id();
$result = CourseManager::separateUsersGroups($users_array);
$groupList = $result['groups'];
$users_array = $result['users'];
foreach ($groupList as $groupId) {
$userGroupList = GroupManager::getStudents($groupId);
$userGroupIdList = array_column($userGroupList, 'user_id');
$users_array = array_merge($users_array, $userGroupIdList);
$params = array('c_id' => $course_id, 'session_id' => $session_id, 'group_id' => $groupId, 'survey_code' => $survey_data['code']);
$invitationExists = self::invitationExists($course_id, $session_id, $groupId, $survey_data['code']);
if (empty($invitationExists)) {
self::save_invitation($params);
}
}
$users_array = array_unique($users_array);
foreach ($users_array as $key => $value) {
if (!isset($value) || $value == '') {
continue;
}
// Skip user if reminding only unanswered people
if (in_array($value, $exclude_users)) {
continue;
}
// Get the unique invitation code if we already have it
if ($reminder == 1 && array_key_exists($value, $survey_invitations)) {
$invitation_code = $survey_invitations[$value]['invitation_code'];
} else {
$invitation_code = md5($value . microtime());
}
$new_user = false;
// User not already invited
// Store the invitation if user_id not in $already_invited['course_users'] OR email is not in $already_invited['additional_users']
$addit_users_array = isset($already_invited['additional_users']) && !empty($already_invited['additional_users']) ? explode(';', $already_invited['additional_users']) : array();
$my_alredy_invited = $already_invited['course_users'] == null ? array() : $already_invited['course_users'];
if (is_numeric($value) && !in_array($value, $my_alredy_invited) || !is_numeric($value) && !in_array($value, $addit_users_array)) {
$new_user = true;
if (!array_key_exists($value, $survey_invitations)) {
$params = array('c_id' => $course_id, 'session_id' => $session_id, 'user' => $value, 'survey_code' => $survey_data['code'], 'invitation_code' => $invitation_code, 'invitation_date' => api_get_utc_datetime());
self::save_invitation($params);
}
}
// Send the email if checkboxed
if (($new_user || $reminder == 1) && $sendmail != 0) {
// Make a change for absolute url
if (isset($invitation_text)) {
$invitation_text = api_html_entity_decode($invitation_text, ENT_QUOTES);
$invitation_text = str_replace('src="../../', 'src="' . api_get_path(WEB_PATH), $invitation_text);
$invitation_text = trim(stripslashes($invitation_text));
}
SurveyUtil::send_invitation_mail($value, $invitation_code, $invitation_title, $invitation_text);
$counter++;
}
}
return $counter;
// Number of invitations sent
}
// Saving the invitations for the course users
$count_course_users = SurveyUtil::save_invitations($values['course_users'], $values['mail_title'], $values['mail_text'], $values['resend_to_all'], $values['send_mail'], $values['remindUnAnswered']);
// Saving the invitations for the additional users
$values['additional_users'] = $values['additional_users'] . ';';
// This is for the case when you enter only one email
$temp = str_replace(',', ';', $values['additional_users']);
// This is to allow , and ; as email separators
$additional_users = explode(';', $temp);
for ($i = 0; $i < count($additional_users); $i++) {
$additional_users[$i] = trim($additional_users[$i]);
}
$counter_additional_users = SurveyUtil::save_invitations($additional_users, $values['mail_title'], $values['mail_text'], $values['resend_to_all'], $values['send_mail'], $values['remindUnAnswered']);
// Updating the invited field in the survey table
SurveyUtil::update_count_invited($survey_data['code']);
$total_count = $count_course_users + $counter_additional_users;
$total_invited = count(SurveyUtil::get_invitations($survey_data['code']));
if ($total_invited > 0) {
$message = '<a href="survey_invitation.php?view=answered&survey_id=' . $survey_data['survey_id'] . '">' . $survey_data['answered'] . '</a> ';
$message .= get_lang('HaveAnswered') . ' ';
$message .= '<a href="survey_invitation.php?view=invited&survey_id=' . $survey_data['survey_id'] . '">' . $total_invited . '</a> ';
$message .= get_lang('WereInvited');
Display::display_normal_message($message, false);
Display::display_confirmation_message($total_count . ' ' . get_lang('InvitationsSend'));
}
} else {
// Getting the invited users
$defaults = SurveyUtil::get_invited_users($survey_data['code']);
// Getting the survey mail text
if (!empty($survey_data['reminder_mail'])) {
$defaults['mail_text'] = $survey_data['reminder_mail'];
} else {
