"""
Creating a calender
Add an event to the calender
Update an existing event
Delete an existing event

"""
from time import sleep, strftime

USER_FIRST_NAME = "Jason"
calendar = {

}


def welcome():
    print "Welcome " + USER_FIRST_NAME + "."
    sleep(1)
    print "Today is: " + strftime("%A %B %d, %Y")
    print "The time is: " + strftime("%H:%M:%S")
    sleep(1)
    print "What would you like to do?"


def start_calendar():
    welcome()
    start = True
    while start:
        user_choice = raw_input("A to Add, U to Update, V to View, D to Delete, X to Exit: ")
        user_choice = user_choice.upper()
        if user_choice == "V":
            if len(calendar.keys()) < 1:
                print "Calendar is empty!"
            else:
                print calendar
        elif user_choice == "U":
            date = raw_input("What date? ")
            update = raw_input("Enter the update: ")
            calendar[date] = update
            print "Update successful"
            print calendar
        elif user_choice == "A":
            event = raw_input("Enter event: ")
            date = raw_input("Enter date (MM/DD/YYYY): ")
            if len(date) > 10 or int(date[6:]) < int(strftime("%Y")):
                print "Invalid date entered"
                try_again = raw_input("Try again? Y for Yes, N for No: ")
                try_again = try_again.upper()
                if try_again == "Y":
                    continue
                else:
                    start = False
            else:
                calendar[date] = event
                print "Event successfully added"
        elif user_choice == "D":
            if len(calendar.keys()) < 1:
                print "The calendar is empty"
            else:
                event = raw_input("What event? ")
                for date in calendar.keys():
                    if event == calendar[date]:
                        del calendar[date]
                        print "Event successfully deleted"
                        print calendar
                    else:
                        print "Incorrect event was specified"
        elif user_choice == "X":
            start = False
        else:
            print "Invalid command was entered"
            start = False


start_calendar()