nextcloud/apps/dav/lib/CardDAV/Converter.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\DAV\CardDAV;
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use OCP\IImage;
use OCP\IUser;
use Sabre\VObject\Component\VCard;
use Sabre\VObject\Property\Text;
class Converter {
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/**
* @param IUser $user
* @return VCard
*/
public function createCardFromUser(IUser $user) {
$uid = $user->getUID();
$displayName = $user->getDisplayName();
$displayName = empty($displayName ) ? $uid : $displayName;
$emailAddress = $user->getEMailAddress();
$cloudId = $user->getCloudId();
$image = $this->getAvatarImage($user);
$vCard = new VCard();
$vCard->add(new Text($vCard, 'UID', $uid));
if (!empty($displayName)) {
$vCard->add(new Text($vCard, 'FN', $displayName));
$vCard->add(new Text($vCard, 'N', $this->splitFullName($displayName)));
}
if (!empty($emailAddress)) {
$vCard->add(new Text($vCard, 'EMAIL', $emailAddress, ['TYPE' => 'OTHER']));
}
if (!empty($cloudId)) {
$vCard->add(new Text($vCard, 'CLOUD', $cloudId));
}
if ($image) {
$vCard->add('PHOTO', $image->data(), ['ENCODING' => 'b', 'TYPE' => $image->mimeType()]);
}
$vCard->validate();
return $vCard;
}
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/**
* @param VCard $vCard
* @param IUser $user
* @return bool
*/
public function updateCard(VCard $vCard, IUser $user) {
$uid = $user->getUID();
$displayName = $user->getDisplayName();
$displayName = empty($displayName ) ? $uid : $displayName;
$emailAddress = $user->getEMailAddress();
$cloudId = $user->getCloudId();
$image = $this->getAvatarImage($user);
$updated = false;
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if($this->propertyNeedsUpdate($vCard, 'FN', $displayName)) {
$vCard->FN = new Text($vCard, 'FN', $displayName);
unset($vCard->N);
$vCard->add(new Text($vCard, 'N', $this->splitFullName($displayName)));
$updated = true;
}
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if($this->propertyNeedsUpdate($vCard, 'EMAIL', $emailAddress)) {
$vCard->EMAIL = new Text($vCard, 'EMAIL', $emailAddress);
$updated = true;
}
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if($this->propertyNeedsUpdate($vCard, 'CLOUD', $cloudId)) {
$vCard->CLOUD = new Text($vCard, 'CLOUD', $cloudId);
$updated = true;
}
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if($this->propertyNeedsUpdate($vCard, 'PHOTO', $image)) {
$vCard->add('PHOTO', $image->data(), ['ENCODING' => 'b', 'TYPE' => $image->mimeType()]);
$updated = true;
}
if (empty($emailAddress) && !is_null($vCard->EMAIL)) {
unset($vCard->EMAIL);
$updated = true;
}
if (empty($cloudId) && !is_null($vCard->CLOUD)) {
unset($vCard->CLOUD);
$updated = true;
}
if (empty($image) && !is_null($vCard->PHOTO)) {
unset($vCard->PHOTO);
$updated = true;
}
return $updated;
}
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/**
* @param VCard $vCard
* @param string $name
* @param string|IImage $newValue
* @return bool
*/
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private function propertyNeedsUpdate(VCard $vCard, $name, $newValue) {
if (is_null($newValue)) {
return false;
}
$value = $vCard->__get($name);
if (!is_null($value)) {
$value = $value->getValue();
$newValue = $newValue instanceof IImage ? $newValue->data() : $newValue;
return $value !== $newValue;
}
return true;
}
/**
* @param string $fullName
* @return string[]
*/
public function splitFullName($fullName) {
// Very basic western style parsing. I'm not gonna implement
// https://github.com/android/platform_packages_providers_contactsprovider/blob/master/src/com/android/providers/contacts/NameSplitter.java ;)
$elements = explode(' ', $fullName);
$result = ['', '', '', '', ''];
if (count($elements) > 2) {
$result[0] = implode(' ', array_slice($elements, count($elements)-1));
$result[1] = $elements[0];
$result[2] = implode(' ', array_slice($elements, 1, count($elements)-2));
} elseif (count($elements) === 2) {
$result[0] = $elements[1];
$result[1] = $elements[0];
} else {
$result[0] = $elements[0];
}
return $result;
}
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/**
* @param IUser $user
* @return null|IImage
*/
private function getAvatarImage(IUser $user) {
try {
$image = $user->getAvatarImage(-1);
return $image;
} catch (\Exception $ex) {
return null;
}
}
}