Add FormsResponseBuilder and use it in Forms::get()

[MAILPOET-3035]

lib/API/JSON/ResponseBuilders/FormsResponseBuilder.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace MailPoet\API\JSON\ResponseBuilders;
+
+use MailPoet\Entities\FormEntity;
+
+class FormsResponseBuilder {
+  const DATE_FORMAT = 'Y-m-d H:i:s';
+
+  public function build(FormEntity $form) {
+    return [
+      'id' => (string)$form->getId(), // (string) for BC
+      'name' => $form->getName(),
+      'status' => $form->getStatus(),
+      'body' => $form->getBody(),
+      'settings' => $form->getSettings(),
+      'styles' => $form->getStyles(),
+      'created_at' => $form->getCreatedAt()->format(self::DATE_FORMAT),
+      'updated_at' => $form->getUpdatedAt()->format(self::DATE_FORMAT),
+      'deleted_at' => ($deletedAt = $form->getDeletedAt()) ? $deletedAt->format(self::DATE_FORMAT) : null,
+    ];
+  }
+}