Refactor the countdown to remove activesupport

lib/21-day-challenge-countdown.rb

@@ -1,29 +1,29 @@
-# Well I need a bit of rails (for convenience) here!
-require 'active_support'
-require 'active_support/time_with_zone'
-require 'active_support/core_ext/time/zones'
+require 'time'
 
 module TwentyOneDayChallenge
   class Countdown
     attr_reader :time_left
     attr_reader :current_day
 
     def initialize
-      Time.zone = 'UTC'
-      start = ActiveSupport::TimeZone.new('Mountain Time (US & Canada)')
-        .parse('13/04/2015 12:00').to_datetime
-      now = Time.zone.now.to_datetime
-      elapsed = (now - start)
-      @current_day = (elapsed).ceil
-      next_deadline = start + @current_day
-      left_today = next_deadline.to_time - now.to_time
-      @time_left = Time.zone.at(left_today)
+      start_time = Time.parse('2015-06-01 12:00:00 -0600')
+      now = Time.now
+
+      elapsed = (now - start_time)
+      @current_day = (elapsed / 60/ 60 / 24).ceil
+      current_day_in_seconds = @current_day * 60 * 60 * 24
+
+      next_deadline = start_time + current_day_in_seconds - 1
+      left_today = next_deadline - now
+      @time_left = Time.at(left_today).gmtime
       # left_string = @time_left.strftime("%H:%M:%S")
     end
 
     def deadline
-      "Today is day #{current_day}. You have #{time_left.strftime('%H:%M:%S')
-                                             } left to send your pull request."
+      format_string = "Today is day %s. You have %s hours, %s minutes "\
+                      "and %s seconds left to send your pull request."
+      format_string % [current_day, time_left.strftime('%H'),
+                       time_left.strftime('%M'), time_left.strftime('%S')]
     end
   end
 end