<?php

declare(strict_types=1);

namespace OCA\RePod\Controller;

use Exception;
use OCA\RePod\AppInfo\Application;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\JSONResponse;
use OCP\Http\Client\IClientService;
use OCP\IRequest;
use OCP\IUserSession;
use OCP\L10N\IFactory;

class TopController extends Controller
{
	public function __construct(
		IRequest $request,
		private IClientService $clientService,
		private IFactory $l10nFactory,
		private IUserSession $userSession
	) {
		parent::__construct(Application::APP_ID, $request);
	}

	/**
	 * @NoAdminRequired
	 * @NoCSRFRequired
	 */
	public function index(int $limit = 10): JSONResponse {
		if (!in_array($limit, [10, 25, 50])) {
			return new JSONResponse(['Invalid limit, can be 10, 25 or 50.'], Http::STATUS_BAD_REQUEST);
		}

		try {
			$lang = $this->l10nFactory->getUserLanguage($this->userSession->getUser());
			$lang = explode('_', $lang);
			$lang = count($lang) > 1 ? $lang[1] : $lang[0];
			$lang = $lang === 'en' ? 'us' : $lang;

			$client = $this->clientService->newClient();
			$response = $client->get("https://rss.applemarketingtools.com/api/v2/{$lang}/podcasts/top/{$limit}/podcasts.json");
			/** @var array $json */
			$json = json_decode((string) $response->getBody(), flags: JSON_THROW_ON_ERROR);
			return new JSONResponse($json, $response->getStatusCode());
		} catch (Exception $e) {
			return new JSONResponse([$e->getMessage()], Http::STATUS_INTERNAL_SERVER_ERROR);
		}
	}
}