143 lines
3.3 KiB
PHP
143 lines
3.3 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2023 F7cloud GmbH and F7cloud contributors
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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namespace OCA\Contacts\Service\Social;
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use OCA\Contacts\AppInfo\Application;
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use OCP\Http\Client\IClient;
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use OCP\Http\Client\IClientService;
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use Psr\Log\LoggerInterface;
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class TelegramProvider implements ISocialProvider {
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/** @var IClient */
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private $httpClient;
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/** @var LoggerInterface */
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private $logger;
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/** @var string */
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public $name = 'telegram';
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public function __construct(IClientService $httpClient,
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LoggerInterface $logger) {
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$this->httpClient = $httpClient->newClient();
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$this->logger = $logger;
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}
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/**
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* Returns if this provider supports this contact
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*
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* @param {array} contact info
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*
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* @return bool
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*/
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#[\Override]
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public function supportsContact(array $contact):bool {
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if (!array_key_exists('IMPP', $contact)) {
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return false;
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}
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$socialprofiles = $this->getProfileIds($contact);
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return count($socialprofiles) > 0;
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}
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/**
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* Returns the profile-picture url
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*
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* @param {array} contact information
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*
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* @return array
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*/
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#[\Override]
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public function getImageUrls(array $contact):array {
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$profileIds = $this->getProfileIds($contact);
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$urls = [];
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foreach ($profileIds as $profileId) {
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$recipe = 'https://t.me/{socialId}';
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$connector = str_replace('{socialId}', $profileId, $recipe);
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$connector = $this->getFromHtml($connector, 'tgme_page_photo_image');
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$urls[] = $connector;
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}
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return $urls;
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}
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/**
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* Returns the profile-id
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*
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* @param {string} the value from the contact's x-socialprofile
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*
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* @return string
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*/
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protected function cleanupId(string $candidate):string {
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$candidate = basename($candidate, '.t.me');
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if ($candidate[0] === '@') {
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$candidate = substr($candidate, 1);
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}
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return $candidate;
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}
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/**
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* Returns all possible profile ids for contact
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*
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* @param {array} contact information
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*
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* @return array of string profile ids
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*/
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protected function getProfileIds($contact):array {
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$socialprofiles = $contact['IMPP'];
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$profileIds = [];
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if (isset($socialprofiles)) {
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foreach ($socialprofiles as $profile) {
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if (strtolower($profile['type']) == $this->name) {
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$profileIds[] = $this->cleanupId($profile['value']);
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}
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}
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}
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return $profileIds;
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}
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/**
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* extracts desired value from an html page
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*
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* @param {string} url the target from where to fetch the content
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* @param {String} the desired catchword to filter for
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*
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* @returns {String} the extracted value (first match) or null if not present
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*/
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protected function getFromHtml(string $url, string $desired) : ?string {
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try {
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$result = $this->httpClient->get($url, [
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'headers' => [
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'User-Agent' => 'Googlebot/2.1'
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]
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]);
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$body = $result->getBody();
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if (!is_string($body)) {
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throw new \Exception('Response body is not a string');
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}
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$htmlResult = new \DOMDocument();
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$htmlResult->loadHTML($body);
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$imgs = $htmlResult->getElementsByTagName('img');
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foreach ($imgs as $img) {
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foreach ($img->attributes as $attr) {
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$value = $attr->nodeValue;
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if (strcmp($value, $desired)) {
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return $value;
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}
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}
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}
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return null;
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} catch (\Exception $e) {
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$this->logger->debug('Error fetching telegram urls', [
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'app' => Application::APP_ID,
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'exception' => $e
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]);
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return null;
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}
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}
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}
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