<?php

namespace Sabre\CardDAV\Xml\Request;

use Sabre\CardDAV\Plugin;
use Sabre\DAV\Exception\BadRequest;
use Sabre\Xml\Reader;
use Sabre\Xml\XmlDeserializable;

/**
 * AddressBookQueryReport request parser.
 *
 * This class parses the {urn:ietf:params:xml:ns:carddav}addressbook-query
 * REPORT, as defined in:
 *
 * http://tools.ietf.org/html/rfc6352#section-8.6
 *
 * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
 * @author Evert Pot (http://www.rooftopsolutions.nl/)
 * @license http://sabre.io/license/ Modified BSD License
 */
class AddressBookQueryReport implements XmlDeserializable
{
    /**
     * An array with requested properties.
     *
     * @var array
     */
    public $properties;

    /**
     * An array with requested vcard properties.
     *
     * @var array
     */
    public $addressDataProperties = [];

    /**
     * List of property/component filters.
     *
     * This is an array with filters. Every item is a property filter. Every
     * property filter has the following keys:
     *   * name - name of the component to filter on
     *   * test - anyof or allof
     *   * is-not-defined - Test for non-existence
     *   * param-filters - A list of parameter filters on the property
     *   * text-matches - A list of text values the filter needs to match
     *
     * Each param-filter has the following keys:
     *   * name - name of the parameter
     *   * is-not-defined - Test for non-existence
     *   * text-match - Match the parameter value
     *
     * Each text-match in property filters, and the single text-match in
     * param-filters have the following keys:
     *
     *   * value - value to match
     *   * match-type - contains, starts-with, ends-with, equals
     *   * negate-condition - Do the opposite match
     *   * collation - Usually i;unicode-casemap
     *
     * @var array
     */
    public $filters;

    /**
     * The number of results the client wants.
     *
     * null means it wasn't specified, which in most cases means 'all results'.
     *
     * @var int|null
     */
    public $limit;

    /**
     * Either 'anyof' or 'allof'.
     *
     * @var string
     */
    public $test;

    /**
     * The mimetype of the content that should be returend. Usually
     * text/vcard.
     *
     * @var string
     */
    public $contentType = null;

    /**
     * The version of vcard data that should be returned. Usually 3.0,
     * referring to vCard 3.0.
     *
     * @var string
     */
    public $version = null;

    /**
     * The deserialize method is called during xml parsing.
     *
     * This method is called statically, this is because in theory this method
     * may be used as a type of constructor, or factory method.
     *
     * Often you want to return an instance of the current class, but you are
     * free to return other data as well.
     *
     * You are responsible for advancing the reader to the next element. Not
     * doing anything will result in a never-ending loop.
     *
     * If you just want to skip parsing for this element altogether, you can
     * just call $reader->next();
     *
     * $reader->parseInnerTree() will parse the entire sub-tree, and advance to
     * the next element.
     *
     * @return mixed
     */
    public static function xmlDeserialize(Reader $reader)
    {
        $elems = (array) $reader->parseInnerTree([
            '{urn:ietf:params:xml:ns:carddav}prop-filter' => 'Sabre\\CardDAV\\Xml\\Filter\\PropFilter',
            '{urn:ietf:params:xml:ns:carddav}param-filter' => 'Sabre\\CardDAV\\Xml\\Filter\\ParamFilter',
            '{urn:ietf:params:xml:ns:carddav}address-data' => 'Sabre\\CardDAV\\Xml\\Filter\\AddressData',
            '{DAV:}prop' => 'Sabre\\Xml\\Element\\KeyValue',
        ]);

        $newProps = [
            'filters' => null,
            'properties' => [],
            'test' => 'anyof',
            'limit' => null,
        ];

        if (!is_array($elems)) {
            $elems = [];
        }

        foreach ($elems as $elem) {
            switch ($elem['name']) {
                case '{DAV:}prop':
                    $newProps['properties'] = array_keys($elem['value']);
                    if (isset($elem['value']['{'.Plugin::NS_CARDDAV.'}address-data'])) {
                        $newProps += $elem['value']['{'.Plugin::NS_CARDDAV.'}address-data'];
                    }
                    break;
                case '{'.Plugin::NS_CARDDAV.'}filter':
                    if (!is_null($newProps['filters'])) {
                        throw new BadRequest('You can only include 1 {'.Plugin::NS_CARDDAV.'}filter element');
                    }
                    if (isset($elem['attributes']['test'])) {
                        $newProps['test'] = $elem['attributes']['test'];
                        if ('allof' !== $newProps['test'] && 'anyof' !== $newProps['test']) {
                            throw new BadRequest('The "test" attribute must be one of "allof" or "anyof"');
                        }
                    }

                    $newProps['filters'] = [];
                    foreach ((array) $elem['value'] as $subElem) {
                        if ($subElem['name'] === '{'.Plugin::NS_CARDDAV.'}prop-filter') {
                            $newProps['filters'][] = $subElem['value'];
                        }
                    }
                    break;
                case '{'.Plugin::NS_CARDDAV.'}limit':
                    foreach ($elem['value'] as $child) {
                        if ($child['name'] === '{'.Plugin::NS_CARDDAV.'}nresults') {
                            $newProps['limit'] = (int) $child['value'];
                        }
                    }
                    break;
            }
        }

        if (is_null($newProps['filters'])) {
            /*
             * We are supposed to throw this error, but KDE sometimes does not
             * include the filter element, and we need to treat it as if no
             * filters are supplied
             */
            //throw new BadRequest('The {' . Plugin::NS_CARDDAV . '}filter element is required for this request');
            $newProps['filters'] = [];
        }

        $obj = new self();
        foreach ($newProps as $key => $value) {
            $obj->$key = $value;
        }

        return $obj;
    }
}
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