<?php

namespace App\Middleware;

use Psr\Container\ContainerInterface;
use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Slim\Routing\RouteContext;
use Slim\Exception\HttpNotFoundException;

use App\Domain\Language\LanguageData;


final class LanguageMiddleware implements MiddlewareInterface
{	
	protected $settings;
	
    public function __construct(
		ContainerInterface $container,
		ResponseFactoryInterface $responseFactory,
		LanguageData $language		
	){
        $this->container = $container;
		$this->responseFactory = $responseFactory;
		$this->language = $language;
    }
	
	
	public function process(
		ServerRequestInterface $request, 
		RequestHandlerInterface $handler
	) : ResponseInterface {
		
		
		
		// Set localization
		$this->localization = $this->container->get('settings')['localization']; 			
		
        $uri 	= $request->getUri();
        $path 	= $uri->getPath();
		
        //Split path into chunks
        $pathChunks = explode("/", $path); 
		
        if ( count($pathChunks) > 1 && in_array($pathChunks[1], $this->localization['available_languages']) ) {
            
			// override default settings with language variables
			$this->language->setLanguage($pathChunks[1]);
 
            //Produce new URI without language reference 
            unset($pathChunks[1]); 
            $newPath = implode('/', $pathChunks);
            $newUri = $uri->withPath($newPath);

  			return $handler->handle($request->withUri($newUri));
        }
		
		
			
		return $handler->handle($request);
	}

	
}