timetracker/common/time.py

64 lines
1.9 KiB
Python

import re
from datetime import datetime, timedelta
from zoneinfo import ZoneInfo
from django.conf import settings
def now() -> datetime:
return datetime.now(ZoneInfo(settings.TIME_ZONE))
def _safe_timedelta(duration: timedelta | int | None):
if duration == None:
return timedelta(0)
elif isinstance(duration, int):
return timedelta(seconds=duration)
elif isinstance(duration, timedelta):
return duration
def format_duration(
duration: timedelta | int | None, format_string: str = "%H hours"
) -> str:
"""
Format timedelta into the specified format_string.
Valid format variables:
- %H hours
- %m minutes
- %s seconds
- %r total seconds
Values don't change into higher units if those units are missing
from the formatting string. For example:
- 61 seconds as "%s" = 61 seconds
- 61 seconds as "%m %s" = 1 minutes 1 seconds"
"""
minute_seconds = 60
hour_seconds = 60 * minute_seconds
day_seconds = 24 * hour_seconds
duration = _safe_timedelta(duration)
# we don't need float
seconds_total = int(duration.total_seconds())
# timestamps where end is before start
if seconds_total < 0:
seconds_total = 0
days = hours = minutes = seconds = 0
remainder = seconds = seconds_total
if "%d" in format_string:
days, remainder = divmod(seconds_total, day_seconds)
if "%H" in format_string:
hours, remainder = divmod(remainder, hour_seconds)
if "%m" in format_string:
minutes, seconds = divmod(remainder, minute_seconds)
literals = {
"%d": str(days),
"%H": str(hours),
"%m": str(minutes),
"%s": str(seconds),
"%r": str(seconds_total),
}
formatted_string = format_string
for pattern, replacement in literals.items():
formatted_string = re.sub(pattern, replacement, formatted_string)
return formatted_string