<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\App;
use Illuminate\Support\Facades\Session;
use Symfony\Component\HttpFoundation\Response;

class SetLocale
{
    /**
     * Handle an incoming request.
     *
     * @param  \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response)  $next
     */
    public function handle(Request $request, Closure $next): Response
    {
        $locale = $request->query('lang');

        if ($locale && in_array($locale, config('app.available_locales'))) {
            App::setLocale($locale);
            Session::put('locale', $locale);
        } elseif (Session::has('locale')) {
            App::setLocale(Session::get('locale'));
        } else {
            App::setLocale(config('app.fallback_locale', 'en'));
        }

        return $next($request);
    }
}