buff/backend/app/utils/timezone.py

"""
时区工具函数
"""
from datetime import datetime, timezone, timedelta


def get_beijing_time() -> datetime:
    """获取当前北京时间 (UTC+8)"""
    beijing_tz = timezone(timedelta(hours=8))
    return datetime.now(beijing_tz)


def beijing_now() -> datetime:
    """获取当前北京时间 (UTC+8) - 别名函数"""
    return get_beijing_time()


def datetime_to_beijing(dt: datetime) -> datetime:
    """将datetime对象转换为北京时间"""
    if dt.tzinfo is None:
        # 如果是naive datetime，假设它是本地时间，转换为北京时间
        beijing_tz = timezone(timedelta(hours=8))
        return dt.replace(tzinfo=timezone.utc).astimezone(beijing_tz)
    else:
        # 如果已经有时区信息，直接转换为北京时间
        beijing_tz = timezone(timedelta(hours=8))
        return dt.astimezone(beijing_tz)