class BirthdayEntry():
  def __init__(self, given_name = None, family_name = None, email_address = None, DOB = None):
  
    self.given_name = given_name
    self.family_name = family_name
    self.email_address = email_address
    self.DOB = DOB


  def display(self):
    print('{} {}: {} {}'.format(self.given_name, self.family_name, self.email_address, self.DOB))
   


class BirthdayBook():
  def __init__(self):
    self.friends = []

  def add_newentry(self, new_entry):
    self.friends.append(new_entry)

  def display(self):
    for friend in self.friends:
        friend.display()



class UserInterface():
  def __init__(self,book):
    self.birthday_book=book
    self.choices()

  def add_entry(self):
    print ("Adding a new person")
    given_name = input("Given Name? ")
    family_name = input("Family Name? ")
    email_address = input("Email address? ")
    DOB_PROMPT = "Date of Birth in form DD MM YY? "
    DOB = input(DOB_PROMPT)

    birthday_entry = BirthdayEntry(given_name, family_name, email_address, DOB)
    self.birthday_book.add_newentry(birthday_entry)
  
  def choices(self):
    print("""An OOP Birthday Book Python program
                Use:
                a to add an entry
                d to display all save entries in Address Book
                i to see the instructions
                q to quit
                """)
    while True:
        choice = input("Make a selection from the above ")
        if choice=="a":
          self.add_entry()
        elif choice=="i":
          print("Students devise Instruction menu")
        elif choice =="d":
          self.display_summaries()
 


  def display_summaries(self):
    self.birthday_book.display()
    

book = BirthdayBook()

book.add_newentry(BirthdayEntry('Bob', 'Smith', 'bsmith@python.com', '11111'))
book.add_newentry(BirthdayEntry('Mary', 'Smith', 'msmith@python.com', '22222'))
UserInterface(book)