Calendar with Event object

calendar.rb

require 'time'
require 'date'

class Invitee
end
class Event
  
  attr_accessor :name
  attr_accessor :date
  attr_accessor :starts_at
  attr_accessor :ends_at
  attr_accessor :invitees
  
  def self.all
    @all ||= []
  end
  
  def ends_at=(value)
    if starts_at and value > starts_at
      @ends_at = value
    end
  end
  
  # def ends_at_later_than_starts_at?
  #   if ends_at and starts_at
  #     ends_at < starts_at
  #   end
  # end
  #
end

# Event.all # => []
# Event.all << event
# Event.all # => [event]


def ask_user_for_selection
  puts "Options:
  1. Press 1 to add an event
  2. Press 2 to show events
  0. Press 0 to exit"
end

def list_all_events

  Event.all.each_with_index do |event,index|
    puts "----- Event #{index +1} -----"
    puts " Name: #{event.name}"
    puts " Date: #{event.date}"
    puts " Start time: #{event.starts_at}"
    puts " End time: #{event.ends_at}"
    puts " invitees #{event.invitees} "
  end
end



def add_an_event
  new_event = Event.new
  new_event.name = ask_for_event_name
  new_event.date =  ask_for_date
  new_event.starts_at = ask_for_start_time
  new_event.ends_at = ask_for_end_time until new_event.ends_at
  new_event.invitees = ask_for_invitees_list

  Event.all << new_event
end

def ask_for_event_name
  event_name = ""

  while event_name.empty?
    puts "what is the event name?"
    event_name = gets.chomp
  end
  return event_name
end

def ask_for_date
  puts "ask_for_date"
  date = ""

  while date !~ /\d\d-\d\d-\d\d\d\d/

		
    puts "what is the date? e.g. 20-04-2014"
    date = Date.parse(gets.chomp)
  end
  return date
end

def ask_for_start_time
  begin
    puts "what is start time? e.g. 11:00am"
    Time.strptime(gets.chomp, "%I:%M%P")
  rescue ArgumentError
    puts "Remeber to use the format 09:00am"
    retry
  end
	
end


def ask_for_end_time
  begin
	
    puts "what is the end time? e.g. 10:10pm"
    Time.strptime(gets.chomp, "%I:%M%P")
  rescue ArgumentError
    retry
  end

end
#HW- END TIME EMPTY, ENSURE DATE IS LATER THAN OR EQUAL TO FIRST TIME

def ask_for_invitees_list
  invite = []
  while invite.empty?
    puts "Who is attending this event (email addresses seperated by a comma)"
    invite = gets.scan(/[a-zA-Z0-9]+@[a-zA-Z0-9]+\.com/)
  end


  return invite

end


def start!
  ask_user_for_selection
  case gets.chomp 
  when "1"
    add_an_event and start!
  when "2"
    list_all_events and start!
  when "0"
    exit()
  else
    start!
  end

end

start!

@TheDreamShake - Let me know if you get this?