revert(install): redirect to install in homepage if no database was set

use App\Models\PodcastModel;

use CodeIgniter\HTTP\RedirectResponse;

use Config\Services;

use Exception;

class HomeController extends BaseController

{

    public function index(): RedirectResponse | string

    {

        $db = db_connect();

        if ($db->getDatabase() === '' || ! $db->tableExists('podcasts')) {

            // Database has not been set or could not find the podcasts table

            // Redirecting to install page because it is likely that Castopod has not been installed yet.

            // NB: as base_url wouldn't have been defined here, redirect to install wizard manually

            $route = Services::routes()->reverseRoute('install');

            return redirect()->to(rtrim(host_url(), '/') . $route);

        }

        $sortOptions = ['activity', 'created_desc', 'created_asc'];

        $sortBy = in_array($this->request->getGet('sort'), $sortOptions, true) ? $this->request->getGet(

            'sort'

        ) : 'activity';

        try {

        $allPodcasts = (new PodcastModel())->getAllPodcasts($sortBy);

        } catch (Exception) {

            // Database connection has not been set or could not find the podcasts table

            // Redirecting to install page because it is likely that Castopod has not been installed yet.

            // NB: as base_url wouldn't have been defined here, redirect to install wizard manually

            $route = Services::routes()->reverseRoute('install');

            return redirect()->to(rtrim(host_url(), '/') . $route);

        }

        // check if there's only one podcast to redirect user to it

        if (count($allPodcasts) === 1) {