Validate all API request as the API is now open for third parties (references #5)

controllers/BaseApiController.php

@@ -4,8 +4,25 @@ namespace Grocy\Controllers;
 
 class BaseApiController extends BaseController
 {
-	protected function ApiResponse($response)
+
+	public function __construct(\Slim\Container $container)
 	{
-		return json_encode($response);
+		parent::__construct($container);
+		$this->OpenApiSpec = json_decode(file_get_contents(__DIR__ . '/../grocy.openapi.json'));
+	}
+
+	protected $OpenApiSpec;
+
+	protected function ApiResponse($data)
+	{
+		return json_encode($data);
+	}
+
+	protected function VoidApiActionResponse($response, $success = true, $status = 200, $errorMessage = '')
+	{
+		return $response->withStatus($status)->withJson(array(
+			'success' => $success,
+			'error_message' => $errorMessage
+		));
 	}
 }