<?php

namespace App\Http\Middleware;

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

class LangCheck
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle(Request $request, Closure $next)
    {
        //if lang provided un request then set it
        if($request->lang) {
            //Set cookie
            Cookie::queue(Cookie::forever('language', $request->lang));
            //set session
            $request->session()->put('lang',strtolower($request->lang));
            //bonus remove lang parameter from query
            return redirect()->to($request->fullUrlWithoutQuery('lang'));
        } else {
            //do we have session ?
            if(!$request->session()->has('lang')) {
                $fromC = Cookie::get('language');
                if (is_null($fromC) || empty($fromC)) {
                    //pas de cookie, recherche sur le navigateur
                    $fromC = substr(Request::server('HTTP_ACCEPT_LANGUAGE'), 0, 2);
                    if (!in_array($fromC, ['fr', 'en', 'es'])) {
                        //default other languages to en
                        $fromC = 'en';
                    }
                }
                //set session
                $request->session()->put('lang',strtolower($fromC));
            }
        }

        $sess_lang = $request->session()->get('lang', config('app.locale'));
        app()->setLocale($sess_lang);
        return $next($request);
    }
}