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Editing: ContactService.php

<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace OCA\Circles\Service;

use Exception;
use OCA\Circles\Exceptions\ContactAddressBookNotFoundException;
use OCA\Circles\Exceptions\ContactFormatException;
use OCA\Circles\Exceptions\ContactNotFoundException;
use OCA\Circles\Model\Member;
use OCA\Circles\Tools\Traits\TArrayTools;
use OCA\Circles\Tools\Traits\TNCLogger;
use OCA\Circles\Tools\Traits\TStringTools;
use OCA\DAV\CardDAV\ContactsManager;
use OCP\Contacts\IManager;
use OCP\IAddressBook;
use OCP\IURLGenerator;
use OCP\Server;

/**
 * Class ContactService
 *
 * @package OCA\Circles\Service
 */
class ContactService {
	use TArrayTools;
	use TStringTools;
	use TNCLogger;

/** @var IURLGenerator */
	private $urlGenerator;

/** @var ConfigService */
	private $configService;

/**
	 * ContactService constructor.
	 *
	 * @param IURLGenerator $urlGenerator
	 * @param ConfigService $configService
	 */
	public function __construct(IURLGenerator $urlGenerator, ConfigService $configService) {
		$this->urlGenerator = $urlGenerator;
		$this->configService = $configService;
	}

/**
	 * @param string $contactPath
	 *
	 * @return string
	 * @throws ContactAddressBookNotFoundException
	 * @throws ContactFormatException
	 * @throws ContactNotFoundException
	 */
	public function getDisplayName(string $contactPath): string {
		$contact = $this->getContact($contactPath);

if ($this->get('FN', $contact) !== '') {
			return $this->get('FN', $contact);
		}

if ($this->get('EMAIL', $contact) !== '') {
			return $this->get('EMAIL', $contact);
		}

if (!empty($this->getArray('EMAIL', $contact))) {
			return $this->getArray('EMAIL', $contact)[0];
		}

// TODO: no idea if this situation might exists or if displaying the full contactPath is safe, so md5()
		return md5($contactPath);
	}

/**
	 * @param string $contactPath
	 *
	 * @return array
	 * @throws ContactAddressBookNotFoundException
	 * @throws ContactFormatException
	 * @throws ContactNotFoundException
	 */
	public function getMailAddresses(string $contactPath): array {
		$c = $this->getContact($contactPath);

return ($this->get('EMAIL', $c) === '') ? [$this->get('EMAIL', $c)] : $this->getArray('EMAIL', $c);
	}

/**
	 * @throws ContactFormatException
	 * @throws ContactNotFoundException
	 * @throws ContactAddressBookNotFoundException
	 */
	private function getContact(string $contactPath): array {
		[$userId, $addressBookUri, $contactId] = explode('/', $contactPath, 3);

if ($userId === ''
			|| $contactId === ''
			|| $addressBookUri === ''
			|| is_null($contactId)
		) {
			throw new ContactFormatException('issue with contact format USERID/ADDRESSBOOK/CONTACTID');
		}

$contactsManager = Server::get(ContactsManager::class);
		$cm = Server::get(IManager::class);
		$contactsManager->setupContactsProvider($cm, $userId, $this->urlGenerator);

$addressBook = $this->getAddressBook($cm, $addressBookUri);
		$contacts = $addressBook->search(
			$contactId, ['UID'],
			[
				'types' => false,
				'escape_like_param' => false
			]
		);

if (sizeof($contacts) !== 1) {
			throw new ContactNotFoundException();
		}

return $contacts[0];
	}

/**
	 * @param IManager $cm
	 * @param string $addressBookUri
	 *
	 * @return IAddressBook
	 * @throws ContactAddressBookNotFoundException
	 */
	private function getAddressBook(IManager $cm, string $addressBookUri): IAddressBook {
		foreach ($cm->getUserAddressBooks() as $addressBook) {
			if ($addressBook->getUri() === $addressBookUri) {
				return $addressBook;
			}
		}

throw new ContactAddressBookNotFoundException();
	}

/**
	 * @param IManager $cm
	 * @param string $addressBookKey
	 *
	 * @return IAddressBook
	 * @throws ContactAddressBookNotFoundException
	 */
	public function getAddressBoxById(IManager $cm, string $addressBookKey): IAddressBook {
		foreach ($cm->getUserAddressBooks() as $addressBook) {
			if ($addressBook->getKey() === $addressBookKey) {
				return $addressBook;
			}
		}

throw new ContactAddressBookNotFoundException();
	}

/**
	 * @param Member $member
	 *
	 * @return array
	 */
	public function getMailAddressesFromMember(Member $member): array {
		if ($member->getUserType() !== Member::TYPE_CONTACT
			|| !$this->configService->isLocalInstance($member->getInstance())) {
			return [];
		}

try {
			return $this->getMailAddresses($member->getUserId());
		} catch (Exception $e) {
			return [];
		}
	}
}

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