Event and Date manager used by @classboard for reminding folks to attend online classes ;(

TimeDogg.py

__doc__ = ''' 
~TimeDogg~ 
Used by @Classboard for reminding folks to attend online classes ;(
- Use of `private` modifiers to prevent aliens from invading
- typechecking following Python 3.x standards
- This is not @facts or @uberfacts... 
don't ever ever try to call private class members from the outside world 
or I would .ssh ya!

Author: Precious Akin
'''
from datetime import datetime as dtt, timedelta as td

class Event:
    __date=None
    __time=None
    __datetime=None
    __reminder=None
    
    __is_due = False
    __is_time = False
    __is_past = False
    
    def __init__(self, date, time, title):
        ''' set the full time on initialing the class.

        attr `date` for event date in string E.g `25-08-2020`

        attr `time` for event time in string E.g `05:30`
        '''
        self._set_event(date, time)
        print("Event: %s"%(title))
        print("Day: %s"%(self.get_event_date))
        print("Time: %s"%(self.get_event_time))
        print("Due date: %s"%(self.get_due_date))
        print("====\n")
        
    def _set_event(self, date, time):
        ''' sets the date and time for the event
        by extracting from datetime module'''
        self.__date = dtt.strptime(date, "%d-%m-%Y")
        self.__time = dtt.strptime(time, "%H:%M").time()
        self.__datetime = dtt.combine(self.__date, self.__time)
        self.set_due_date
    
    @property
    def __get_today_date(self)->str:
        return dtt.now().strftime("%d-%m-%Y")

    @property
    def __get_today_time(self)->str:
        return dtt.now().strftime("%H:%M%p")
    
    @property
    def get_event_date(self)->str:
        ''' get the date for event E.g DD/MM/YYYY'''
        return self.__date.strftime("%d-%m-%Y")

    @property
    def get_event_time(self)->str:
        '''get the event time in Hours and minute except seconds'''
        return self.__time.strftime("%H:%M%p")

    @property
    def set_due_date(self)->bool:
        if self.__get_today_date > self.get_event_date:
            self.__is_past = True
        if self.__get_today_date == self.get_event_date:
            self.__is_due = True
            if self.__get_today_time == self.get_event_time:
                self.__is_time = True
    
    @property
    def get_due_date(self)->str:
        if self.__is_past:
            return "That day too old. For old thangs have passed away and new thangs thereof!"
        if self.__is_due and self.__is_time:
            return "Today got some event right now!"
        elif self.__is_due:
            return "Today got some event at %s."%(self.get_event_time)
        else:
            return "Next event is due in %s day(s)."%(self.get_time_diff().days)
    
    def get_reminder_eta(self, **kwargs):
        '''gets time to reminder for an event
        could be used for your cron job e.g Celery

        remind days or minutes before or remind exactly on time.
        '''
        if "days" and "minutes" in kwargs:
            days = kwargs['days']
            minutes = kwargs["minutes"]
            return self.__datetime - td(days, minutes)
        elif "days" in kwargs:
            days = kwargs['days']
            return self.__datetime - td(days=days)
        elif "minutes" in kwargs:
            minutes = kwargs["minutes"]
            return self.__datetime - td(minutes=minutes)
        else:
            return self.__datetime
        
    def get_time_diff(self, **kwargs):
        '''gets day difference between two days
        returns a timedelta obj
        '''
        return self.__datetime - dtt.now()

'''
Event sample data
Dict for sample events in the past or future, 
you can also pass datetime object in the dict.

#TO-DO: 
# Generate list of events
# Cron job for reminder
'''
if __name__ == "__main__":
    events = [
        {"title":"All international Flights open worldwide.", "date":"22-09-2020", "time":"07:00"},
        {"title":"School meeting", "date":"24-08-2020", "time":"15:30"},
        {"title":"Bed time", "date":"22-08-2020", "time":"00:15"},
        {"title":"Presently!", "date":dtt.now().strftime("%d-%m-%Y"), "time":dtt.now().strftime("%H:%M")},
    ]
    for ev in events:
        Event(ev["date"],ev["time"],ev["title"])