<?php

namespace OCA\user_sql;

use OCP\Util;

class OC_GROUP_SQL extends \OC_Group_Backend implements \OCP\GroupInterface
{
    protected $settings;
    protected $helper;

    public function __construct()
    {
        $this->helper = new \OCA\user_sql\lib\Helper();
        $domain = \OC::$server->getRequest()->getServerHost();
        $this->settings = $this->helper->loadSettingsForDomain($domain);
        $this->helper->connectToDb($this->settings);
        return false;
    }

    public function getUserGroups($uid)
    {
        if (empty($this->settings['sql_group_table'])) {
            Util::writeLog('OC_USER_SQL', "Group table not configured", Util::DEBUG);
            return [];
        }
        $rows = $this->helper->runQuery('getUserGroups', array('uid' => $uid), false, true);
        if ($rows === false) {
            Util::writeLog('OC_USER_SQL', "Found no group", Util::DEBUG);
            return [];
        }
        $groups = array();
        foreach ($rows as $row) {
            $groups[] = $row[$this->settings['col_group_name']];
        }
        return $groups;
    }

    public function getGroups($search = '', $limit = null, $offset = null)
    {
        if (empty($this->settings['sql_group_table'])) {
            return [];
        }
        $search = "%" . $search . "%";
        $rows = $this->helper->runQuery('getGroups', array('search' => $search), false, true,
            array('limit' => $limit, 'offset' => $offset));
        if ($rows === false) {
            return [];
        }
        $groups = array();
        foreach ($rows as $row) {
            $groups[] = $row[$this->settings['col_group_name']];
        }
        return $groups;
    }

    public function usersInGroup($gid, $search = '', $limit = null, $offset = null)
    {
        if (empty($this->settings['sql_group_table'])) {
            Util::writeLog('OC_USER_SQL', "Group table not configured", Util::DEBUG);
            return [];
        }
        $rows = $this->helper->runQuery('getGroupUsers', array('gid' => $gid), false, true);
        if ($rows === false) {
            Util::writeLog('OC_USER_SQL', "Found no users for group", Util::DEBUG);
            return [];
        }
        $users = array();
        foreach ($rows as $row) {
            $users[] = $row[$this->settings['col_group_username']];
        }
        return $users;
    }

    public function countUsersInGroup($gid, $search = '')
    {
        if (empty($this->settings['sql_group_table'])) {
            return 0;
        }
        $search = "%" . $search . "%";
        $count = $this->helper->runQuery('countUsersInGroup', array('gid' => $gid, 'search' => $search));
        if ($count === false) {
            return 0;
        } else {
            return intval(reset($count));
        }
    }
}