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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
    exit;
}
class ucp_zebra
{
    var $u_action;
    function main($id, $mode)
    {
        global $db, $user, $auth, $template, $phpbb_root_path, $phpEx, $request, $phpbb_dispatcher;
        $submit    = (isset($_POST['submit']) || isset($_GET['add']) || isset($_GET['remove'])) ? true : false;
        $s_hidden_fields = '';
        $l_mode = strtoupper($mode);
        if ($submit)
        {
            $data = $error = array();
            $updated = false;
            $var_ary = array(
                'usernames'    => array(0),
                'add'        => '',
            );
            foreach ($var_ary as $var => $default)
            {
                $data[$var] = $request->variable($var, $default, true);
            }
            if (!empty($data['add']) || count($data['usernames']))
            {
                if (confirm_box(true))
                {
                    // Remove users
                    if (!empty($data['usernames']))
                    {
                        $user_ids = $data['usernames'];
                        /**
                        * Remove users from friends/foes
                        *
                        * @event core.ucp_remove_zebra
                        * @var    string    mode        Zebra type: friends|foes
                        * @var    array    user_ids    User ids we remove
                        * @since 3.1.0-a1
                        */
                        $vars = array('mode', 'user_ids');
                        extract($phpbb_dispatcher->trigger_event('core.ucp_remove_zebra', compact($vars)));
                        $sql = 'DELETE FROM ' . ZEBRA_TABLE . '
                            WHERE user_id = ' . $user->data['user_id'] . '
                                AND ' . $db->sql_in_set('zebra_id', $user_ids);
                        $db->sql_query($sql);
                        $updated = true;
                    }
                    // Add users
                    if ($data['add'])
                    {
                        $data['add'] = array_map('trim', array_map('utf8_clean_string', explode("\n", $data['add'])));
                        // Do these name/s exist on a list already? If so, ignore ... we could be
                        // 'nice' and automatically handle names added to one list present on
                        // the other (by removing the existing one) ... but I have a feeling this
                        // may lead to complaints
                        $sql = 'SELECT z.*, u.username, u.username_clean
                            FROM ' . ZEBRA_TABLE . ' z, ' . USERS_TABLE . ' u
                            WHERE z.user_id = ' . $user->data['user_id'] . '
                                AND u.user_id = z.zebra_id';
                        $result = $db->sql_query($sql);
                        $friends = $foes = array();
                        while ($row = $db->sql_fetchrow($result))
                        {
                            if ($row['friend'])
                            {
                                $friends[] = utf8_clean_string($row['username']);
                            }
                            else
                            {
                                $foes[] = utf8_clean_string($row['username']);
                            }
                        }
                        $db->sql_freeresult($result);
                        // remove friends from the username array
                        $n = count($data['add']);
                        $data['add'] = array_diff($data['add'], $friends);
                        if (count($data['add']) < $n && $mode == 'foes')
                        {
                            $error[] = $user->lang['NOT_ADDED_FOES_FRIENDS'];
                        }
                        // remove foes from the username array
                        $n = count($data['add']);
                        $data['add'] = array_diff($data['add'], $foes);
                        if (count($data['add']) < $n && $mode == 'friends')
                        {
                            $error[] = $user->lang['NOT_ADDED_FRIENDS_FOES'];
                        }
                        // remove the user himself from the username array
                        $n = count($data['add']);
                        $data['add'] = array_diff($data['add'], array(utf8_clean_string($user->data['username'])));
                        if (count($data['add']) < $n)
                        {
                            $error[] = $user->lang['NOT_ADDED_' . $l_mode . '_SELF'];
                        }
                        unset($friends, $foes, $n);
                        if (count($data['add']))
                        {
                            $sql = 'SELECT user_id, user_type
                                FROM ' . USERS_TABLE . '
                                WHERE ' . $db->sql_in_set('username_clean', $data['add']) . '
                                    AND user_type <> ' . USER_INACTIVE;
                            $result = $db->sql_query($sql);
                            $user_id_ary = array();
                            while ($row = $db->sql_fetchrow($result))
                            {
                                if ($row['user_id'] != ANONYMOUS && $row['user_type'] != USER_IGNORE)
                                {
                                    $user_id_ary[] = $row['user_id'];
                                }
                                else if ($row['user_id'] != ANONYMOUS)
                                {
                                    $error[] = $user->lang['NOT_ADDED_' . $l_mode . '_BOTS'];
                                }
                                else
                                {
                                    $error[] = $user->lang['NOT_ADDED_' . $l_mode . '_ANONYMOUS'];
                                }
                            }
                            $db->sql_freeresult($result);
                            if (count($user_id_ary))
                            {
                                // Remove users from foe list if they are admins or moderators
                                if ($mode == 'foes')
                                {
                                    $perms = array();
                                    foreach ($auth->acl_get_list($user_id_ary, array('a_', 'm_')) as $forum_id => $forum_ary)
                                    {
                                        foreach ($forum_ary as $auth_option => $user_ary)
                                        {
                                            $perms = array_merge($perms, $user_ary);
                                        }
                                    }
                                    $perms = array_unique($perms);
                                    if (count($perms))
                                    {
                                        $error[] = $user->lang['NOT_ADDED_FOES_MOD_ADMIN'];
                                    }
                                    // This may not be right ... it may yield true when perms equate to deny
                                    $user_id_ary = array_diff($user_id_ary, $perms);
                                    unset($perms);
                                }
                                if (count($user_id_ary))
                                {
                                    $sql_mode = ($mode == 'friends') ? 'friend' : 'foe';
                                    $sql_ary = array();
                                    foreach ($user_id_ary as $zebra_id)
                                    {
                                        $sql_ary[] = array(
                                            'user_id'        => (int) $user->data['user_id'],
                                            'zebra_id'        => (int) $zebra_id,
                                            $sql_mode        => 1
                                        );
                                    }
                                    /**
                                    * Add users to friends/foes
                                    *
                                    * @event core.ucp_add_zebra
                                    * @var    string    mode        Zebra type:
                                    *                            friends|foes
                                    * @var    array    sql_ary        Array of
                                    *                            entries we add
                                    * @since 3.1.0-a1
                                    */
                                    $vars = array('mode', 'sql_ary');
                                    extract($phpbb_dispatcher->trigger_event('core.ucp_add_zebra', compact($vars)));
                                    $db->sql_multi_insert(ZEBRA_TABLE, $sql_ary);
                                    $updated = true;
                                }
                                unset($user_id_ary);
                            }
                            else if (!count($error))
                            {
                                $error[] = $user->lang['USER_NOT_FOUND_OR_INACTIVE'];
                            }
                        }
                    }
                    if ($request->is_ajax())
                    {
                        $message = ($updated) ? $user->lang[$l_mode . '_UPDATED'] : implode('<br />', $error);
                        $json_response = new \phpbb\json_response;
                        $json_response->send(array(
                            'success' => $updated,
                            'MESSAGE_TITLE'    => $user->lang['INFORMATION'],
                            'MESSAGE_TEXT'    => $message,
                            'REFRESH_DATA'    => array(
                                'time'    => 3,
                                'url'        => $this->u_action
                            )
                        ));
                    }
                    else if ($updated)
                    {
                        meta_refresh(3, $this->u_action);
                        $message = $user->lang[$l_mode . '_UPDATED'] . '<br />' . implode('<br />', $error) . ((count($error)) ? '<br />' : '') . '<br />' . sprintf($user->lang['RETURN_UCP'], '<a href="' . $this->u_action . '">', '</a>');
                        trigger_error($message);
                    }
                    else
                    {
                        $template->assign_var('ERROR', implode('<br />', $error));
                    }
                }
                else
                {
                    confirm_box(false, $user->lang['CONFIRM_OPERATION'], build_hidden_fields(array(
                        'mode'        => $mode,
                        'submit'    => true,
                        'usernames'    => $data['usernames'],
                        'add'        => $data['add']))
                    );
                }
            }
        }
        $sql_and = ($mode == 'friends') ? 'z.friend = 1' : 'z.foe = 1';
        $sql = 'SELECT z.*, u.username, u.username_clean
            FROM ' . ZEBRA_TABLE . ' z, ' . USERS_TABLE . ' u
            WHERE z.user_id = ' . $user->data['user_id'] . "
                AND $sql_and
                AND u.user_id = z.zebra_id
            ORDER BY u.username_clean ASC";
        $result = $db->sql_query($sql);
        $s_username_options = '';
        while ($row = $db->sql_fetchrow($result))
        {
            $s_username_options .= '<option value="' . $row['zebra_id'] . '">' . $row['username'] . '</option>';
        }
        $db->sql_freeresult($result);
        $template->assign_vars(array(
            'L_TITLE'            => $user->lang['UCP_ZEBRA_' . $l_mode],
            'U_FIND_USERNAME'    => append_sid("{$phpbb_root_path}memberlist.$phpEx", 'mode=searchuser&amp;form=ucp&amp;field=add'),
            'S_USERNAME_OPTIONS'    => $s_username_options,
            'S_HIDDEN_FIELDS'        => $s_hidden_fields,
            'S_UCP_ACTION'            => $this->u_action)
        );
        $this->tpl_name = 'ucp_zebra_' . $mode;
        $this->page_title = 'UCP_ZEBRA_' . $l_mode;
    }
}