Laravel 5.1 Domain Redirect Middleware

DomainRedirect.php

<?php

namespace App\Http\Middleware;

use Closure;
use stdClass;

class DomainRedirect
{
    private $redirects = [
        'za.grayling.com' => 'africa',
        'africa.grayling.com' => 'africa',
        'grayling.ng' => 'africa',
        'grayling.at' => 'at',
        'at.grayling.com' => 'at',
        'grayling.be' => 'be',
        'grayling.eu' => 'be',
        'bg.grayling.com' => 'bg',
        'cn.grayling.com' => 'cn',
        'grayling.hr' => 'hr',
        'grayling.cz' => 'cz',
        'cz.grayling.com' => 'cz',
        'grayling.fr' => 'fr',
        'fr.grayling.com' => 'fr',
        'grayling.de' => 'de',
        'de.grayling.com' => 'de',
        'hk.grayling.com' => 'hk',
        'grayling.hu' => 'hu',
        'hu.grayling.com' => 'hu',
        'me.grayling.com' => 'middle_east',
        'meta.grayling.com' => 'middle_east',
        'grayling.nl' => 'nl',
        'nl.grayling.com' => 'nl',
        'grayling.pl' => 'pl',
        'pl.grayling.com' => 'pl',
        'grayling.ro' => 'ro',
        'ro.grayling.com' => 'ro',
        'rs.grayling.com' => 'ru',
        'grayling.rs' => 'rs',
        'grayling.sg' => 'sg',
        'grayling.sk' => 'sk',
        'sk.grayling.com' => 'sk',
        'grayling.si' => 'si',
        'grayling.es' => 'es',
        'es.grayling.com' => 'es',
        'grayling.se' => 'se',
        'se.grayling.com' => 'se',
        'grayling.ch' => 'ch',
        'ch.grayling.com' => 'ch',
        'trimedia.ch' => 'ch',
        'tr.grayling.com' => 'tr',
        'grayling.co.uk' => 'gb',
        'uk.grayling.com' => 'gb',
        'us.grayling.com' => 'us',
    ];

    /**
     * Redirect incoming domain requests to the correct
     * URI on the grayling.com domain.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  \Closure $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        $domain = $this->getDomain($request);

        $requestedDomain = "{$domain->subdomain}.{$domain->name}.{$domain->tld}";
        $redirectDomain = 'website-grayling.cloudapp.net';

        if ($domain->subdomain === 'www' || is_null($domain->subdomain)) {
            $requestedDomain = "{$domain->name}.{$domain->tld}";
        }

        if (env('APP_ENV') === 'local' || $requestedDomain === $redirectDomain) {
            return $next($request);
        }

        if (isset($this->redirects[$requestedDomain])) {
            return redirect("http://{$redirectDomain}/{$this->redirects[$requestedDomain]}");
        }

        return redirect("http://{$redirectDomain}");
    }

    /**
     * Get the current domain from the request.
     *
     * @param  \Illuminate\Http\Request $request
     * @return object
     */
    private function getDomain($request)
    {
        $parts = explode('.', $request->getHost());

        $domain = new stdClass();
        $domain->subdomain = isset($parts[0]) ? $parts[0] : null;
        $domain->name = isset($parts[1]) ? $parts[1] : null;
        $domain->tld = isset($parts[2]) ? $parts[2] : null;

        if (count($parts) === 2) {
            $domain->subdomain = null;
            $domain->name = $parts[0];
            $domain->tld = $parts[1];
        }

        return $domain;
    }
}