from datetime import datetime, timezone, timedelta


class GTime:
    """서버 전역에서 UTC 기준 시간을 사용하기 위한 유틸. (backend 와 동일)"""

    @staticmethod
    def UTC() -> datetime:
        return datetime.now(timezone.utc).replace(tzinfo=None)

    @staticmethod
    def UTCStr(fmt: str = "%Y-%m-%d %H:%M:%S") -> str:
        return GTime.UTC().strftime(fmt)

    @staticmethod
    def AddMinutes(minutes: int) -> datetime:
        return GTime.UTC() + timedelta(minutes=minutes)

    @staticmethod
    def AddDays(days: int) -> datetime:
        return GTime.UTC() + timedelta(days=days)