OwncloudContactsOfficial/ajax/contact/list.php

<?php
/**
 * Copyright (c) 2011 Thomas Tanghus <thomas@tanghus.net>
 * This file is licensed under the Affero General Public License version 3 or
 * later.
 * See the COPYING-README file.
 */

function cmp($a, $b)
{
    if ($a['fullname'] == $b['fullname']) {
        return 0;
    }
    return ($a['fullname'] < $b['fullname']) ? -1 : 1;
}

OCP\JSON::checkLoggedIn();
OCP\JSON::checkAppEnabled('contacts');

$offset = isset($_GET['offset']) ? $_GET['offset'] : 0;
$aid = isset($_GET['aid'])?$_GET['aid']:null;

$active_addressbooks = array();
if(is_null($aid)) {
	// Called initially to get the active addressbooks.
	$active_addressbooks = OCA\Contacts\AddressbookLegacy::active(OCP\USER::getUser());
} else {
	// called each time more contacts has to be shown.
	$active_addressbooks = array(OCA\Contacts\AddressbookLegacy::find($aid));
}

$lastModified = OCA\Contacts\App::lastModified();
if(!is_null($lastModified)) {
	OCP\Response::enableCaching();
	OCP\Response::setLastModifiedHeader($lastModified);
	OCP\Response::setETagHeader(md5($lastModified->format('U')));
}
session_write_close();

// create the addressbook associate array
$contacts_addressbook = array();
$ids = array();
foreach($active_addressbooks as $addressbook) {
	$ids[] = $addressbook['id'];
}

$contacts_alphabet = array();

// get next 50 for each addressbook.
$contacts_alphabet = array_merge(
	$contacts_alphabet,
	OCA\Contacts\VCard::all($ids)
);

uasort($contacts_alphabet, 'cmp');

$contacts = array();


// Our new array for the contacts sorted by addressbook
if($contacts_alphabet) {
	foreach($contacts_alphabet as $contact) {
		try {
			$vcard = Sabre\VObject\Reader::read($contact['carddata']);
			$details = OCA\Contacts\VCard::structureContact($vcard);
			$contacts[] = array(
					'id' => $contact['id'],
					'aid' => $contact['addressbookid'],
					'data' => $details,
				);
		} catch (Exception $e) {
			\OCP\Util::writeLog('contacts', 'Exception: ' . $e->getMessage(), \OCP\Util::DEBUG);
			continue;
		}
	}
}

OCP\JSON::success(array(
	'data' => array(
		'contacts' => $contacts,
		'addressbooks' => $active_addressbooks,
		'is_indexed' => OCP\Config::getUserValue(OCP\User::getUser(), 'contacts', 'contacts_indexed', 'no') === 'yes'
	)
));