import re
from datetime import timedelta

from model.TimeSlot import TimeSlot


def accumulate_duration(timeslots: list[TimeSlot]) -> timedelta:
    return sum([ts.duration() for ts in timeslots], start=timedelta(0))

def filter(timeslots: list[TimeSlot], query: str) -> list[TimeSlot]:
    pattern = re.compile(query)
    return [ts for ts in timeslots if pattern.search(ts.name)]