export class ShareHttpError extends Error {
  constructor(
    message: string,
    readonly status: number,
    readonly retryAfter?: number
  ) {
    super(message);
    this.name = "ShareHttpError";
  }
}

export function shareErrorResponse(error: unknown) {
  const known = error instanceof ShareHttpError;
  const status = known ? error.status : 500;
  const message = known ? error.message : "Internal server error";
  const headers = new Headers();
  if (known && error.retryAfter) {
    headers.set("Retry-After", String(error.retryAfter));
  }
  return Response.json({ success: false, error: message }, { status, headers });
}