def is_time_period_available(user_id, user_given_start_date, user_given_end_date):
def time_periods_overlap(ftpsd, ftped, stpsd, stped):
return stpsd <= ftpsd <= stped or stpsd <= ftped <= stped \
or stpsd <= ftpsd <= stped or stpsd <= ftped <= stped
if user_given_end_date <= user_given_start_date:
return False
busytimes = UserService.get_user_busy_times(user_id)
return list(
filter((lambda busytime: time_periods_overlap(
user_given_start_date, user_given_end_date, busytime.start, busytime.end)), busytimes)
) == []
def events_by_availability_filter_builder(user_id):
def time_periods_overlap(ftpsd, ftped, stpsd, stped):
return stpsd <= ftpsd <= stped or stpsd <= ftped <= stped \
or stpsd <= ftpsd <= stped or stpsd <= ftped <= stped
busytimes = UserService.get_user_busy_times(user_id)
if not busytimes:
return lambda busytime: True
return lambda event: reduce(
(lambda x, y: x and y),
map(
(lambda busytime: not time_periods_overlap(
event.busytime.start, event.busytime.end, busytime.start, busytime.end)),
busytimes
)
)