Current File : //www/varak.net/nextcloud.varak.net/apps_old/apps/contacts/lib/Service/Social/TelegramProvider.php
<?php
/**
* @copyright Copyright (c) 2023 Matthias Heinisch <nextcloud@matthiasheinisch.de>
*
* @author Matthias Heinisch <nextcloud@matthiasheinisch.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Contacts\Service\Social;
use GuzzleHttp\Exception\RequestException;
use GuzzleHttp\RequestOptions;
use OCA\Contacts\AppInfo\Application;
use OCP\Http\Client\IClient;
use OCP\Http\Client\IClientService;
use Psr\Log\LoggerInterface;
class TelegramProvider implements ISocialProvider {
/** @var IClient */
private $httpClient;
/** @var LoggerInterface */
private $logger;
/** @var string */
public $name = 'telegram';
public function __construct(IClientService $httpClient,
LoggerInterface $logger) {
$this->httpClient = $httpClient->newClient();
$this->logger = $logger;
}
/**
* Returns if this provider supports this contact
*
* @param {array} contact info
*
* @return bool
*/
public function supportsContact(array $contact):bool {
if (!array_key_exists('IMPP', $contact)) {
return false;
}
$socialprofiles = $this->getProfileIds($contact);
return isset($socialprofiles) && count($socialprofiles) > 0;
}
/**
* Returns the profile-picture url
*
* @param {array} contact information
*
* @return array
*/
public function getImageUrls(array $contact):array {
$profileIds = $this->getProfileIds($contact);
$urls = [];
foreach ($profileIds as $profileId) {
$recipe = 'https://t.me/{socialId}';
$connector = str_replace('{socialId}', $profileId, $recipe);
$connector = $this->getFromHtml($connector, 'tgme_page_photo_image');
$urls[] = $connector;
}
return $urls;
}
/**
* Returns the profile-id
*
* @param {string} the value from the contact's x-socialprofile
*
* @return string
*/
protected function cleanupId(string $candidate):string {
$candidate = basename($candidate, ".t.me");
if ($candidate[0] === '@') {
$candidate = substr($candidate, 1);
}
return $candidate;
}
/**
* Returns all possible profile ids for contact
*
* @param {array} contact information
*
* @return array of string profile ids
*/
protected function getProfileIds($contact):array {
$socialprofiles = $contact['IMPP'];
$profileIds = [];
if (isset($socialprofiles)) {
foreach ($socialprofiles as $profile) {
if (strtolower($profile['type']) == $this->name) {
$profileIds[] = $this->cleanupId($profile['value']);
}
}
}
return $profileIds;
}
/**
* extracts desired value from an html page
*
* @param {string} url the target from where to fetch the content
* @param {String} the desired catchword to filter for
*
* @returns {String} the extracted value (first match) or null if not present
*/
protected function getFromHtml(string $url, string $desired) : ?string {
try {
$result = $this->httpClient->get($url, [
RequestOptions::HEADERS => [
'User-Agent' => 'Googlebot/2.1'
]
]);
$htmlResult = new \DOMDocument();
$htmlResult->loadHTML($result->getBody());
$imgs = $htmlResult->getElementsByTagName('img');
foreach ($imgs as $img) {
foreach ($img->attributes as $attr) {
$value = $attr->nodeValue;
if (strcmp($value, $desired)) {
return $value;
}
}
}
return null;
} catch (RequestException $e) {
$this->logger->debug('Error fetching telegram urls', [
'app' => Application::APP_ID,
'exception' => $e
]);
return null;
}
}
}
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