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<?php
/**
* @copyright Copyright (c) 2020 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 OCP\Http\Client\IClientService;
class TwitterProvider implements ISocialProvider {
/** @var IClientService */
private $httpClient;
/** @var string */
public $name = "twitter";
public function __construct(IClientService $httpClient) {
$this->httpClient = $httpClient->NewClient();
}
/**
* Returns if this provider supports this contact
*
* @param {array} contact info
*
* @return bool
*/
public function supportsContact(array $contact):bool {
$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://mobile.twitter.com/{socialId}';
$connector = str_replace("{socialId}", $profileId, $recipe);
$connector = $this->getFromHtml($connector, '_normal');
$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);
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['X-SOCIALPROFILE'];
$profileIds = [];
if (isset($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);
$htmlResult = new \DOMDocument();
$htmlResult->loadHTML($result->getBody());
$imgs = $htmlResult->getElementsByTagName('img');
foreach ($imgs as $img) {
foreach ($img->attributes as $attr) {
$value = $attr->nodeValue;
if (strpos($value, $desired)) {
$value = str_replace("normal", "400x400", $value);
return $value;
}
}
}
return null;
} catch (\Exception $e) {
return null;
}
}
}
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