language header decorator for swagger and i18n

Author: YuriMascarenhasLourenco

src/presentation/decorators/language-header.decorator.ts

@@ -0,0 +1,12 @@
+import { ApiHeader } from '@nestjs/swagger';
+
+export const LanguageHeader = () =>
+  ApiHeader({
+    name: 'accept-language',
+    description: 'Language for validation messages (eg: pt, en)',
+    required: false,
+    schema: {
+      type: 'string',
+      example: 'en',
+    },
+  });