""" In this project, we'll build a basic calendar that the user will be able to interact with from the command line. The user should be able to choose to:

View the calendar
Add an event to the calendar
Update an existing event
Delete an existing event"""

"""
Corrections made by codecademy advisor Alexander:
corrected indentation, compare to your original code to see changes

Syntax error in import statement, you originally had strtime instead of strftime (missing the F)
Syntax error in elif statement: elif try_again == raw_input("Try Again? Y for Yes, N for No: "):
You originally had one equal sign after elif try_again, remember that one equal sign is for
assignment statements only.
In that same elif statement, you forgot to end the elif conditional with a colon.

Other than that, everything was good to go!

-Alexander
"""
from time import sleep, strftime

USER_FIRST_NAME = "Gary"

calendar = {}

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

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."
      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 "An invalid date was 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 "Addition successful."
            print calendar
      elif user_choice == "D":
         if len(calendar.keys()) < 1:
            print "Calendar empty."
         else:
            event = raw_input("Enter event: ")
            for date in calendar.keys():
               if event == calendar[date]:
                  del calendar[date]
                  print "Event successfully deleted."
               else:
                  print "That event does not exist."
      elif 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
start_calendar()