application/front/ShaarliMiddleware.php

   1 <?php
   2
   3 namespace Shaarli\Front;
   4
   5 use Shaarli\Container\ShaarliContainer;
   6 use Shaarli\Front\Exception\ShaarliException;
   7 use Slim\Http\Request;
   8 use Slim\Http\Response;
   9
  10 /**
  11  * Class ShaarliMiddleware
  12  *
  13  * This will be called before accessing any Shaarli controller.
  14  */
  15 class ShaarliMiddleware
  16 {
  17     /** @var ShaarliContainer contains all Shaarli DI */
  18     protected $container;
  19
  20     public function __construct(ShaarliContainer $container)
  21     {
  22         $this->container = $container;
  23     }
  24
  25     /**
  26      * Middleware execution:
  27      *   - execute the controller
  28      *   - return the response
  29      *
  30      * In case of error, the error template will be displayed with the exception message.
  31      *
  32      * @param  Request  $request  Slim request
  33      * @param  Response $response Slim response
  34      * @param  callable $next     Next action
  35      *
  36      * @return Response response.
  37      */
  38     public function __invoke(Request $request, Response $response, callable $next)
  39     {
  40         try {
  41             $response = $next($request, $response);
  42         } catch (ShaarliException $e) {
  43             $this->container->pageBuilder->assign('message', $e->getMessage());
  44             if ($this->container->conf->get('dev.debug', false)) {
  45                 $this->container->pageBuilder->assign(
  46                     'stacktrace',
  47                     nl2br(get_class($this) .': '. $e->getTraceAsString())
  48                 );
  49             }
  50
  51             $response = $response->withStatus($e->getCode());
  52             $response = $response->write($this->container->pageBuilder->render('error'));
  53         }
  54
  55         return $response;
  56     }
  57 }