From 9b9f1015771d45a00bf2d336f246231b81443d46 Mon Sep 17 00:00:00 2001
From: David Mehren <git@herrmehren.de>
Date: Sun, 10 Jan 2021 19:21:00 +0100
Subject: [PATCH] MarkdownBody: Register swagger metadata

As explained in https://github.com/nestjs/swagger/issues/32#issuecomment-716169471, it's possible to register swagger metadata in custom decorators by providing an array of `enhancers`.
We now add metadata with the `MarkdownBody` decorator: The request needs a `body` with content-type `text/markdown`.

Signed-off-by: David Mehren <git@herrmehren.de>
---
 src/api/utils/markdownbody-decorator.ts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/api/utils/markdownbody-decorator.ts b/src/api/utils/markdownbody-decorator.ts
index 6d627d462..1c81df3ea 100644
--- a/src/api/utils/markdownbody-decorator.ts
+++ b/src/api/utils/markdownbody-decorator.ts
@@ -10,6 +10,7 @@ import {
   ExecutionContext,
   InternalServerErrorException,
 } from '@nestjs/common';
+import { ApiBody, ApiConsumes } from '@nestjs/swagger';
 import * as getRawBody from 'raw-body';
 
 /**
@@ -37,4 +38,17 @@ export const MarkdownBody = createParamDecorator(
       );
     }
   },
+  [
+    (target, key) => {
+      ApiConsumes('text/markdown')(
+        target,
+        key,
+        Object.getOwnPropertyDescriptor(target, key),
+      );
+      ApiBody({
+        required: true,
+        schema: { example: '# Markdown Body' },
+      })(target, key, Object.getOwnPropertyDescriptor(target, key));
+    },
+  ],
 );