fix: little fixes

src/common/decorators/api-safe-error-response.decorator.ts

@@ -1,19 +1,43 @@
-import { ApiInternalServerErrorResponse, ApiProperty } from '@nestjs/swagger';
+import { applyDecorators } from '@nestjs/common';
+import {
+  ApiExtraModels,
+  ApiProperty,
+  ApiResponse,
+  getSchemaPath,
+} from '@nestjs/swagger';
 
-export class SafeErrorResponseDto {
-  @ApiProperty({ example: 500 })
-  statusCode: number;
+export class ProblemDetailsDto {
+  @ApiProperty({ example: 401 })
+  status: number;
 
-  @ApiProperty({ example: 'Internal server error' })
-  message: string;
+  @ApiProperty({ example: 'UNAUTHORIZED' })
+  code: string;
 
-  @ApiProperty({ example: '/api/v1' })
-  path: string;
+  @ApiProperty({
+    required: false,
+    example: [{ pointer: '#/email', detail: 'must be a valid email address' }],
+  })
+  errors?: { pointer: string; detail: string }[];
 }
 
-export function ApiSafeErrorResponse(): MethodDecorator & ClassDecorator {
-  return ApiInternalServerErrorResponse({
-    description: 'Internal server error',
-    type: SafeErrorResponseDto,
+function problemResponse(status: number, description: string) {
+  return ApiResponse({
+    status,
+    description,
+    content: {
+      'application/problem+json': {
+        schema: { $ref: getSchemaPath(ProblemDetailsDto) },
+      },
+    },
   });
 }
+
+export function ApiProblemResponses(): MethodDecorator & ClassDecorator {
+  return applyDecorators(
+    ApiExtraModels(ProblemDetailsDto),
+    problemResponse(400, 'Invalid request'),
+    problemResponse(401, 'Authentication required'),
+    problemResponse(404, 'Resource not found'),
+    problemResponse(500, 'Internal server error'),
+  );
+}