export class AppError extends Error {
  constructor(code, message, status = 400, details = {}) {
    super(message);
    this.name = 'AppError';
    this.code = code;
    this.status = status;
    this.details = details;
  }
}

export function toErrorEnvelope(error, requestId) {
  const status = error?.status && Number.isInteger(error.status) ? error.status : 500;
  const code = error?.code || 'INTERNAL_ERROR';
  const message = error?.message || 'Unexpected error';
  const details = error?.details || {};

  return {
    status,
    body: {
      code,
      message,
      details,
      requestId,
    },
  };
}