MAPG-10 refactor view-controller to be able to handle JSON response

src/View/JsonView.php

@@ -0,0 +1,21 @@
+<?php namespace MapGuesser\View;
+
+class JsonView extends ViewBase
+{
+    public function __construct(array &$data = [])
+    {
+        $this->data = &$data;
+    }
+
+    public function &render(): string
+    {
+        $content = json_encode($this->data);
+
+        return $content;
+    }
+
+    public function getContentType(): string
+    {
+        return 'application/json';
+    }
+}