<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\App;

class LanguageMiddleware {

	/**
	 * Handle an incoming request.
	 *
	 * @param  \Illuminate\Http\Request  $request
	 * @param  \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
	 * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
	 */
	public function handle(Request $request, Closure $next) {
		$lang = $request->input('lng');
		if ($lang && in_array($lang, $this->available)) {
			App::setLocale($lang);
			return $next($request);
		}
		$lang = $request->header('Accept-Language');
		if ($lang && in_array($lang, $this->available)) {
			App::setLocale($lang);
			return $next($request);
		}
		return $next($request);
	}

	private $available = ['de', 'en'];

}