import { BadRequestException } from '@nestjs/common';

export function parseBigIntParam(value: unknown, label = 'ID'): bigint {
  const text = String(value ?? '').trim();
  if (!/^\d+$/.test(text)) {
    throw new BadRequestException(`${label}格式无效`);
  }
  try {
    return BigInt(text);
  } catch {
    throw new BadRequestException(`${label}格式无效`);
  }
}