Target repo :ekoen-backend, Route Error Documentation

Use this skill when adding or updating error responses in TSOA controllers under app/rpc/v2/controller/**.

Goal

If a controller method can throw a defined error from app/util/errors/index.ts, document it with TSOA @Response using HttpErrorRes (or HttpErrorRes[] for multiple errors).

Quick Flow

1. Identify the controller method(s) that can throw errors (directly or via use case/service).
2. Locate the matching error definitions in app/util/errors/index.ts (namespace in ekErr).
3. Import HttpErrorRes and ekErr into the controller file.
4. Add @Response decorators above the route method:
   • Single error: @Response<HttpErrorRes>('422', error.message, error)
   • Multiple errors: @Response<HttpErrorRes[]>('409', 'failed, one of list', [errorA, errorB])
5. Use toHttpResBody() to supply the error examples, consistent with existing controllers.

Controller Example Pattern

import { Response } from 'tsoa';
import { ekErr, type HttpErrorRes } from 'app/util';

const exampleA = new ekErr.EkoEN.SomeError().toHttpResBody();
const exampleB = new ekErr.Api.InvalidArgs().toHttpResBody();

@Response<HttpErrorRes>('422', exampleB.message, exampleB)
@Response<HttpErrorRes[]>('409', 'failed, one of list', [exampleA])

Notes

• Keep error documentation in the controller (presentation layer).
• Do not add new error definitions here—only reference existing ones.
• Prefer consistent HTTP codes defined in makeError.