<?php

declare(strict_types=1);

/**
 * Radio App.
 *
 * @author Jonas Heinrich
 * @copyright 2021 Jonas Heinrich <onny@project-insanity.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or any later version.
 *
 * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
 */

namespace OCA\Radio\Controller;

use OCA\Radio\AppInfo\Application;
use OCA\Radio\Service\FavoriteService;
use OCA\Radio\Service\UserService;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\Attribute\NoAdminRequired;
use OCP\AppFramework\Http\DataDownloadResponse;
use OCP\Defaults;
use OCP\HintException;
use OCP\IDateTimeFormatter;
use OCP\IRequest;

class ExportController extends Controller
{
	use Errors;

	public function __construct(
		IRequest $request,
		private readonly FavoriteService $service,
		private readonly UserService $user,
		private readonly Defaults $defaults,
		private readonly IDateTimeFormatter $dateTime,
	) {
		parent::__construct(Application::APP_ID, $request);
	}

	#[NoAdminRequired]
	public function index(): DataDownloadResponse {
		$user = $this->user->getUser();
		if (is_null($user)) {
			throw new HintException('User not logged in');
		}

		$xml = new \SimpleXMLElement('<?xml version="1.0"?><playlist></playlist>');
		$xml->addAttribute('encoding', 'UTF-8');

		$trackList = $xml->addChild('trackList');
		if ($trackList instanceof \SimpleXMLElement) {
			foreach ($this->service->findAll($user->getUID()) as $station) {
				$track = $trackList->addChild('track');
				if ($track instanceof \SimpleXMLElement) {
					$track->addChild('location', $station->getUrlresolved());
					$track->addChild('title', $station->getName());
					$track->addChild('image', $station->getFavicon());
				}
			}
		}

		$dom = new \DOMDocument('1.0');
		$dom->preserveWhiteSpace = false;
		$dom->formatOutput = true;

		/** @psalm-suppress ArgumentTypeCoercion */
		$dom->loadXML($xml->asXML());
		$returnstring = $dom->saveXML();

		$userName = $user->getDisplayName();
		$productName = $this->defaults->getName();
		$date = $this->dateTime->formatDate(time());
		$export_name = sprintf('%s Radio Favorites (%s) (%s).xspf', $productName, $userName, $date);

		return new DataDownloadResponse($returnstring, $export_name, 'application/xspf+xml');
	}
}