class.ilMailAutoCompleteUserProvider.php

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<?php
/* Copyright (c) 1998-2014 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once 'Services/User/classes/class.ilUserAutoComplete.php';
require_once 'Services/Mail/classes/class.ilMailAutoCompleteRecipientProvider.php';

class ilMailAutoCompleteUserProvider extends ilMailAutoCompleteRecipientProvider
{
    public function __construct($quoted_term, $term)
    {
        parent::__construct($quoted_term, $term);
    }

    public function valid()
    {
        $this->data = $this->db->fetchAssoc($this->res);

        return is_array($this->data);
    }

    public function current()
    {
        return array(
            'login' => $this->data['login'],
            'firstname' => $this->data['firstname'],
            'lastname' => $this->data['lastname']
        );
    }

    public function key()
    {
        return $this->data['login'];
    }

    public function rewind()
    {
        if ($this->res) {
            $this->db->free($this->res);
            $this->res = null;
        }
        $select_part = $this->getSelectPart();
        $where_part = $this->getWherePart($this->quoted_term);
        $order_by_part = $this->getOrderByPart();
        $query = implode(" ", array(
            'SELECT ' . $select_part,
            'FROM ' . $this->getFromPart(),
            $where_part ? 'WHERE ' . $where_part : '',
            $order_by_part ? 'ORDER BY ' . $order_by_part : ''
        ));

        $this->res = $this->db->query($query);
    }

    protected function getSelectPart()
    {
        $fields = array(
            'login',
            sprintf(
                "(CASE WHEN (profpref.value = %s OR profpref.value = %s) THEN firstname ELSE '' END) firstname",
                $this->db->quote('y', 'text'),
                $this->db->quote('g', 'text')
            ),
            sprintf(
                "(CASE WHEN (profpref.value = %s OR profpref.value = %s) THEN lastname ELSE '' END) lastname",
                $this->db->quote('y', 'text'),
                $this->db->quote('g', 'text')
            ),
            sprintf(
                "(CASE WHEN ((profpref.value = %s OR profpref.value = %s) AND pubemail.value = %s) THEN email ELSE '' END) email",
                $this->db->quote('y', 'text'),
                $this->db->quote('g', 'text'),
                $this->db->quote('y', 'text')
            ),
        );

        $fields[] = 'profpref.value profile_value';
        $fields[] = 'pubemail.value email_value';

        return implode(', ', $fields);
    }

    protected function getFromPart()
    {
        $joins = array();

        $joins[] = '
                        LEFT JOIN usr_pref profpref
                        ON profpref.usr_id = usr_data.usr_id
                        AND profpref.keyword = ' . $this->db->quote('public_profile', 'text');

        $joins[] = '
                        LEFT JOIN usr_pref pubemail
                        ON pubemail.usr_id = usr_data.usr_id
                        AND pubemail.keyword = ' . $this->db->quote('public_email', 'text');

        if ($joins) {
            return 'usr_data ' . implode(' ', $joins);
        } else {
            return 'usr_data ';
        }
    }

    protected function getWherePart($search_query)
    {
        $outer_conditions = array();
        $outer_conditions[] = 'usr_data.usr_id != ' . $this->db->quote(ANONYMOUS_USER_ID, 'integer');
        $outer_conditions[] = 'usr_data.active != ' . $this->db->quote(0, 'integer');

        $field_conditions = array();
        foreach ($this->getFields() as $field) {
            $field_condition = $this->getQueryConditionByFieldAndValue($field, $search_query);

            if ('email' == $field) {
                // If privacy should be respected, the profile setting of every user concerning the email address has to be
                // respected (in every user context, no matter if the user is 'logged in' or 'anonymous').
                $email_query = array();
                $email_query[] = $field_condition;
                $email_query[] = 'pubemail.value = ' . $this->db->quote('y', 'text');
                $field_conditions[] = '(' . implode(' AND ', $email_query) . ')';
            } else {
                $field_conditions[] = $field_condition;
            }
        }

        // If the current user context ist 'logged in' and privacy should be respected, all fields >>>except the login<<<
        // should only be searchable if the users' profile is published (y oder g)
        // In 'anonymous' context we do not need this additional conditions,
        // because we checked the privacy setting in the condition above: profile = 'g'
        if ($field_conditions) {
            $fields = '(' . implode(' OR ', $field_conditions) . ')';

            $field_conditions = ['(' . implode(' AND ', array(
                $fields,
                $this->db->in('profpref.value', array('y', 'g'), false, 'text')
            )) . ')'];
        }

        // The login field must be searchable regardless (for 'logged in' users) of any privacy settings.
        // We handled the general condition for 'anonymous' context above: profile = 'g'
        $field_conditions[] = $this->getQueryConditionByFieldAndValue('login', $search_query);

        include_once 'Services/User/classes/class.ilUserAccountSettings.php';
        if (ilUserAccountSettings::getInstance()->isUserAccessRestricted()) {
            include_once './Services/User/classes/class.ilUserFilter.php';
            $outer_conditions[] = $this->db->in('time_limit_owner', ilUserFilter::getInstance()->getFolderIds(), false, 'integer');
        }

        if ($field_conditions) {
            $outer_conditions[] = '(' . implode(' OR ', $field_conditions) . ')';
        }

        return implode(' AND ', $outer_conditions);
    }

    protected function getOrderByPart()
    {
        return 'login ASC';
    }

    protected function getQueryConditionByFieldAndValue($field, $a_str)
    {
        return $this->db->like($field, 'text', $a_str . '%');
    }

    protected function getFields()
    {
        $available_fields = array();
        foreach (array('firstname', 'lastname') as $field) {
            include_once 'Services/Search/classes/class.ilUserSearchOptions.php';
            if (ilUserSearchOptions::_isEnabled($field)) {
                $available_fields[] = $field;
            }
        }
        return $available_fields;
    }
}