progress towards a working agent.

src/App.php

@@ -2,6 +2,7 @@
 
 namespace Benzine;
 
+use Benzine\Exceptions\JsonErrorHandler;
 use Benzine\ORM\Connection\Databases;
 use Benzine\ORM\Laminator;
 use Benzine\Redis\Redis;
@@ -47,6 +48,7 @@ use Symfony\Component\Translation;
 use Tuupola\Middleware\ServerTimingMiddleware;
 use Twig;
 use Twig\Loader\FilesystemLoader;
+use Zeuxisoo\Whoops\Slim\WhoopsMiddleware;
 
 class App
 {
@@ -106,7 +108,7 @@ class App
         if ($this->debugMode) {
             $this->app->addErrorMiddleware(true, true, true, $this->logger);
         }
-
+        
         $this->debugBar['time']->startMeasure('interrogateTranslations', 'Time to interrogate translation files');
         $this->interrogateTranslations();
         $this->debugBar['time']->stopMeasure('interrogateTranslations');

src/Exceptions/JsonErrorHandler.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace Benzine\Exceptions;
+
+use Slim\Interfaces\ErrorRendererInterface;
+use Throwable;
+
+class JsonErrorHandler implements ErrorRendererInterface {
+    public function __invoke(Throwable $exception, bool $displayErrorDetails): string
+    {
+        return json_encode([
+            'error' => $exception->getMessage(),
+            'where' => $exception->getFile() . ":" . $exception->getLine(),
+            'code' => $exception->getCode(),
+        ], JSON_PRETTY_PRINT);
+    }
+}