export class AppError extends Error {
  constructor(
    public readonly code: string,
    message: string,
    public readonly statusCode = 400
  ) {
    super(message);
    this.name = "AppError";
  }
}

export function toErrorResponse(error: unknown) {
  if (error instanceof AppError) {
    return {
      statusCode: error.statusCode,
      body: { error: { code: error.code, message: error.message } },
    };
  }

  console.error("Unhandled error:", error);
  return {
    statusCode: 500,
    body: { error: { code: "INTERNAL_ERROR", message: "An unexpected error occurred" } },
  };
}