box-nestjs-monorepo/libs/common/src/time/time.util.ts

// Utility helpers for time-related operations
const MS_THRESHOLD = 1_000_000_000_000;

/**
 * Strictly for persisted timestamps:
 * return epoch seconds as bigint (floor)
 */
export function nowSecBigInt(): bigint {
  return BigInt(Math.floor(Date.now() / 1000));
}

/**
 * Convert a runtime value into epoch seconds (bigint).
 * Numbers > 1e12 are treated as milliseconds and converted down.
 */
export function toSecBigInt(value: number | bigint): bigint {
  if (typeof value === 'bigint') {
    return value;
  }
  if (!Number.isFinite(value)) {
    return BigInt(0);
  }
  if (Math.abs(value) > MS_THRESHOLD) {
    return BigInt(Math.floor(value / 1000));
  }
  return BigInt(Math.floor(value));
}

export function nowEpochMsBigInt(): bigint {
  return BigInt(Date.now());
}

export function nowMs(): number {
  return Date.now();
}