neet/refined-itsukara-link

import { ErrorRequestHandler, Response } from 'express';

import * as Rest from '../../adapters/generated/@types';
import {
  AppError,
  DrainTokenNotFoundError,
  RemoveStreamNotFoundError,
  ShowMediaAttachmentNotFoundError,
  ShowOrganizationNotFoundError,
  ShowPerformerNotFoundError,
  ShowStreamNotFoundError,
  ShowUserNotFoundError,
  UnexpectedError,
} from '../../app';

export const appErrorHandler: ErrorRequestHandler = (
  error,
  _req,
  res,
  next,
): Response | void => {
  if (!(error instanceof AppError)) {
    return next(error);
  }

  if (error instanceof UnexpectedError) {
    res.status(500);
  }
  if (error instanceof DrainTokenNotFoundError) {
    res.status(404);
  }
  if (error instanceof ShowUserNotFoundError) {
    res.status(404);
  }
  if (error instanceof RemoveStreamNotFoundError) {
    res.status(404);
  }
  if (error instanceof ShowMediaAttachmentNotFoundError) {
    res.status(404);
  }
  if (error instanceof ShowOrganizationNotFoundError) {
    res.status(404);
  }
  if (error instanceof ShowPerformerNotFoundError) {
    res.status(404);
  }
  if (error instanceof ShowStreamNotFoundError) {
    res.status(404);
  }

  const payload: Rest.Error = {
    error: error.name,
    message: error.message,
  };

  res.json(payload);
};