from datetime import datetime
from datetime import timedelta

class DateTimeHelper:
    def __init__(self):
        pass

    def __init__(self,capturedatetime,timeChange):
        self.datetimestamp=capturedatetime
        self.timeChange=timeChange
        self.offsetTime=DateTimeHelper.applyRelativeTime(self.datetimestamp, self.timeChange)

    def getDateTimeStamp(self):
        return self.datetimestamp
    
    def getTimeChange(self):
        return self.timeChange
    
    def getOffsetTime(self):
        return self.offsetTime
    
    def getOffsetTimeAsString(self):
        return DateTimeHelper.getDateTimeAsString(self.offsetTime)
    
    def toString(self):
        pass

    @staticmethod
    def getDateTimeAsString(someDateTime):
        if(not isinstance(someDateTime,datetime)):
            raise Exception('Invalid type for parameter')
        return someDateTime.strftime("%m-%d-%Y %H:%M:%S")

    @staticmethod 
    def getDateTimeFromString(someDateTimeString):
        if(not isinstance(someDateTimeString,str)):
            raise Exception('Invalid type for parameter')
        return datetime.strptime(someDateTimeString,"%m-%d-%Y %H:%M:%S")

    @staticmethod
    def getCurrentDateTime():
        return datetime.now()

    @staticmethod
    def applyRelativeTime(sometime,relativetime):
        if(not isinstance(sometime,datetime)):
            raise Exception('Invalid type for parameter')
        if(not isinstance(relativetime,str)):
            raise Exception('Invalid type for parameter')
        if relativetime=='just now':
            return sometime
        relativetimesplit=relativetime.split()
        if len(relativetimesplit)==2:
            year=datetime.now().year
            relativetime=relativetime+', '+str(year)
            relativeDate = datetime.strptime(relativetime, '%B %d, %Y')
            days=sometime-relativeDate
            # sometime=sometime-timedelta(days=days)
            sometime=sometime-days
        elif relativetimesplit[1]=='hour' or relativetimesplit[1]=='hours':
            hours=int(relativetimesplit[0])
            sometime=sometime-timedelta(hours=hours)
        elif relativetimesplit[1]=='day' or relativetimesplit[1]=='days':
            days=int(relativetimesplit[0])
            sometime=sometime-timedelta(days=days)
        elif relativetimesplit[1]=='minute' or relativetimesplit[1]=='minutes':
            minutes=int(relativetimesplit[0])
            sometime=sometime-timedelta(minutes=minutes)
        return sometime

list=[]


# date_time_str='03-03-2023 12:00:00'
# capturedatetime = datetime.strptime(date_time_str, '%m-%d-%Y %H:%M:%S')
# Item.applyRelativeTime(capturedatetime, '2 days ago')

deltaTime='March 7'
now = datetime.now()
relativeTime=DateTimeHelper.applyRelativeTime(now, deltaTime)
relativeTimeStr=DateTimeHelper.getDateTimeAsString(relativeTime)

print('time:{p1}'.format(p1=DateTimeHelper.getDateTimeAsString(now)))
print('delta:{p1}'.format(p1=deltaTime))
print('result:{p1}'.format(p1=relativeTimeStr))


#now = Item.getCurrentDateTime()
#capturedatetime = Item.getDateTimeAsString(now)

#Item.applyRelativeTime(capturedatetime, 'February 24')


list.append(Item(capturedatetime,'February 24'))
list.append(Item(capturedatetime,'2 days ago'))
list.append(Item(capturedatetime,'21 days ago'))
list.append(Item(capturedatetime,'1 day ago'))
list.append(Item(capturedatetime,'1 minute ago'))
list.append(Item(capturedatetime,'5 minutes ago'))

for item in list:
    print (item)



# date_time_str='01-01-2023 12:00:00'
# b = datetime.strptime(date_time_str, '%m-%d-%Y %H:%M:%S')

# date_time_str='01-01-2023 18:00:00'
# c = datetime.strptime(date_time_str, '%m-%d-%Y %H:%M:%S')

# list.append(a)
# list.append(b)
# list.append(c)

# print(list)

# another=sorted(list, key=lambda x:x)

# print(another)
# for item in another:
#     print('{:02d}-{:02d}-{:d} {:02d}:{:02d}:{:02d}'.format(item.month,item.day,item.year,item.hour,item.minute,item.second))