GRAL-2093: add JsonSerializer class

Author: ziimk

src/Utils/CamelCaseHelper.php

@@ -11,8 +11,15 @@ public static function keysToCamelCase($input)
         }
 
         if (is_object($input)) {
-            $className = get_class($input);
-            $obj = new $className;
+            // If the input object is not an instance of any SDK model then use the JsonSerializer class
+            // so that json_encode() would use snake_case keys from the raw response.
+            // Otherwise, use the mapped model class where the snake_case keys are assigned by generated code.
+            if ($input instanceof \stdClass) {
+                $obj = new JsonSerializer($input);
+            } else {
+                $className = get_class($input);
+                $obj = new $className;
+            }
         }
 
         $arr = [];

src/Utils/JsonSerializer.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Pipedrive\Utils;
+
+use JsonSerializable;
+
+class JsonSerializer implements JsonSerializable
+{
+    private $args;
+
+    public function __construct($input)
+    {
+        $this->args = $input;
+    }
+
+    /**
+     * Encode this object to JSON
+     */
+    public function jsonSerialize()
+    {
+        return $this->args;
+    }
+}