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<?php

/**
 * This taks handles notifying someone that a new event has been
 * added to the calendar - but only when no topic has been created.
 *
 * Simple Machines Forum (SMF)
 *
 * @package SMF
 * @author Simple Machines http://www.simplemachines.org
 * @copyright 2019 Simple Machines and individual contributors
 * @license http://www.simplemachines.org/about/smf/license.php BSD
 *
 * @version 2.1 RC1
 */

/**
 * Class EventNew_Notify_Background
 */
class EventNew_Notify_Background extends SMF_BackgroundTask
{
    /**
     * This executes the task - loads up the information, puts the email in the queue and inserts alerts as needed.
     * @return bool Always returns true
     */
    public function execute()
    {
        global $sourcedir, $smcFunc, $user_profile;

        // Get everyone who could be notified - those are the people who can see the calendar.
        require_once($sourcedir . '/Subs-Members.php');
        $members = membersAllowedTo('calendar_view');

        // Don't alert the event creator
        if (!empty($this->_details['sender_id']))
            $members = array_diff($members, array($this->_details['sender_id']));

        // Having successfully figured this out, now let's get the preferences of everyone.
        require_once($sourcedir . '/Subs-Notify.php');
        $prefs = getNotifyPrefs($members, 'event_new', true);

        // Just before we go any further, we may not have the sender's name. Let's just quickly fix that.
        // If a guest creates the event, we wouldn't be capturing a username or anything.
        if (!empty($this->_details['sender_id']) && empty($this->_details['sender_name']))
        {
            loadMemberData($this->_details['sender_id'], 'minimal');
            if (!empty($user_profile[$this->_details['sender_id']]))
                $this->_details['sender_name'] = $user_profile[$this->_details['sender_id']]['real_name'];
            else
                $this->_details['sender_id'] = 0;
        }

        // So now we find out who wants what.
        $alert_bits = array(
            'alert' => self::RECEIVE_NOTIFY_ALERT,
            'email' => self::RECEIVE_NOTIFY_EMAIL,
        );
        $notifies = array();

        foreach ($prefs as $member => $pref_option)
        {
            foreach ($alert_bits as $type => $bitvalue)
                if ($pref_option['event_new'] & $bitvalue)
                    $notifies[$type][] = $member;
        }

        // Firstly, anyone who wants alerts.
        if (!empty($notifies['alert']))
        {
            // Alerts are relatively easy.
            $insert_rows = array();
            foreach ($notifies['alert'] as $member)
            {
                $insert_rows[] = array(
                    'alert_time' => $this->_details['time'],
                    'id_member' => $member,
                    'id_member_started' => $this->_details['sender_id'],
                    'member_name' => $this->_details['sender_name'],
                    'content_type' => 'event',
                    'content_id' => $this->_details['event_id'],
                    'content_action' => empty($this->_details['sender_id']) ? 'new_guest' : 'new',
                    'is_read' => 0,
                    'extra' => $smcFunc['json_encode'](
                        array(
                            "event_id" => $this->_details['event_id'],
                            "event_title" => $this->_details['event_title']
                        )
                    ),
                );
            }

            $smcFunc['db_insert']('insert',
                '{db_prefix}user_alerts',
                array('alert_time' => 'int', 'id_member' => 'int', 'id_member_started' => 'int',
                    'member_name' => 'string', 'content_type' => 'string', 'content_id' => 'int',
                    'content_action' => 'string', 'is_read' => 'int', 'extra' => 'string'),
                $insert_rows,
                array('id_alert')
            );

            // And update the count of alerts for those people.
            updateMemberData($notifies['alert'], array('alerts' => '+'));
        }

        return true;
    }
}

?>