<?php

declare(strict_types=1);

/**
 * @copyright 2017 Christoph Wurst <christoph@winzerhof-wurst.at>
 *
 * @author 2017 Christoph Wurst <christoph@winzerhof-wurst.at>
 *
 * @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\Mail\Service\Avatar;

use Exception;
use OCP\Http\Client\IClientService;
use function is_resource;
use function stream_get_contents;

class Downloader {
	/** @var IClientService */
	private $clientService;

	public function __construct(IClientService $clientService) {
		$this->clientService = $clientService;
	}

	/**
	 * @param string $url
	 * @return string|null
	 */
	public function download(string $url) {
		$client = $this->clientService->newClient();

		try {
			$resp = $client->get($url);
		} catch (Exception $e) {
			return null;
		}

		$body = $resp->getBody();
		if (is_resource($body)) {
			return stream_get_contents($body);
		}
		return $body;
	}
}
