# -*- coding: utf-8 -*-
import time
from datetime import datetime

import humanfriendly
import pytz

from kiara.utils import log_message


def get_current_time_incl_timezone() -> datetime:

    current_tz_name = time.tzname[0]
    try:
        current_tz = pytz.timezone(current_tz_name)
    except pytz.exceptions.UnknownTimeZoneError:
        log_message(
            "error.unknown.timezone",
            tz_name=current_tz_name,
            solution="using utc instead",
        )
        current_tz = pytz.utc

    return datetime.now(tz=current_tz)


def get_earliest_time_incl_timezone() -> datetime:
    return datetime(1970, 1, 1, tzinfo=pytz.utc)


def to_human_readable_date_string(datetime: datetime) -> str:

    now = get_current_time_incl_timezone()
    time_gone = (now - datetime).total_seconds()

    relative_time_str: str = humanfriendly.format_timespan(time_gone, max_units=1)
    return relative_time_str