simple calendar class

1 files changed, 49 insertions, 0 deletions

diff --git a/sublab_calendar.rb b/sublab_calendar.rb
new file mode 100644
index 0000000..4863759
--- /dev/null
+++ b/sublab_calendar.rb
@@ -0,0 +1,49 @@
+require 'rubygems'
+require 'bundler/setup'
+
+require 'icalendar'
+require 'open-uri'
+require 'json'
+
+class SublabCalendar
+
+  URL = "https://sublab.org:5232/calendars/events"
+
+  Event = Struct.new(:summary, :start, :end) do
+    def to_json(*args)
+      to_h.to_json(*args)
+    end
+  end
+
+  attr_reader :calendar
+
+  def initialize(ical)
+    @calendar = Icalendar.parse(ical).first
+  end
+
+  def self.load(url=URL)
+    ical = open(url, {ssl_verify_mode: OpenSSL::SSL::VERIFY_NONE})
+    new(ical)
+  end
+
+  def events
+    calendar.events.map(&method(:readable))
+  end
+
+  def future
+    calendar.events.select {|ev| ev.dtstart >= DateTime.now}.map(&method(:readable))
+  end
+
+  def past
+    calendar.events.select {|ev| ev.dtstart < DateTime.now}.map(&method(:readable))
+  end
+
+  def next(count=1)
+    future.take(count)
+  end
+
+  def readable(event)
+    Event.new(event.summary, event.dtstart.to_s, event.dtend.to_s)
+  end
+
+end