from datetime import datetime
from typing import Tuple


def get_timestamp_range(ts: int, delta_seconds: int = 5, unit: str = "microseconds") -> Tuple[int, int]:
    """
    返回时间戳前后delta_seconds秒的范围（单位与输入一致）
    """
    if ts <= 0:
        return 0, 0

    scale = {
        "seconds": 1,
        "milliseconds": 1000,
        "microseconds": 1_000_000,
        "nanoseconds": 1_000_000_000

    }.get(unit, 1_000_000)  # 默认微秒

    delta = delta_seconds * scale
    return ts - delta, ts + delta


def format_timestamp(timestamp: int) -> datetime:
    return datetime.fromtimestamp(timestamp / 1_000_000)