4 files changed, 148 insertions, 0 deletions
diff --git a/lib/sublab_calendar.rb b/lib/sublab_calendar.rb
new file mode 100644
index 0000000..66de90d
--- /dev/null
+++ b/lib/sublab_calendar.rb
@@ -0,0 +1,23 @@
+require 'rubygems'
+require 'bundler/setup'
+
+require 'date'
+require 'active_support/core_ext/date_and_time/calculations'
+require 'icalendar/recurrence'
+require 'httpclient'
+require 'httpi'
+require 'json'
+
+require 'sublab_calendar/calendar'
+require 'sublab_calendar/event'
+require 'sublab_calendar/occurrence'
+
+module SublabCalendar
+
+  URL = "https://dav.nashipur.org/cal.php/calendars/sublars/events?export"
+  USER = "sublars"
+  PASS = "sublars14"
+
+  HTTPI.adapter = :httpclient
+
+end
diff --git a/lib/sublab_calendar/calendar.rb b/lib/sublab_calendar/calendar.rb
new file mode 100644
index 0000000..e136ff5
--- /dev/null
+++ b/lib/sublab_calendar/calendar.rb
@@ -0,0 +1,48 @@
+module SublabCalendar
+
+  class Calendar
+
+    attr_reader :calendar
+
+    def initialize(ical)
+      @calendar = Icalendar.parse(ical).first
+    end
+
+    def self.load(url=URL)
+      request = HTTPI::Request.new
+      request.url = URL
+      request.auth.digest(USER, PASS)
+      request.auth.ssl.verify_mode = :none
+      response = HTTPI.get(request)
+
+      ical = response.body
+      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 recurring
+      events.select(&:"recurring?")
+    end
+
+    def next(count=1)
+      future.take(count)
+    end
+
+    def readable(event)
+      SublabCalendar::Event.new(event)
+    end
+
+  end
+
+end
diff --git a/lib/sublab_calendar/event.rb b/lib/sublab_calendar/event.rb
new file mode 100644
index 0000000..d350d51
--- /dev/null
+++ b/lib/sublab_calendar/event.rb
@@ -0,0 +1,39 @@
+module SublabCalendar
+
+  class Event < SimpleDelegator
+
+    BASIC_ATTRIBUTES = [:summary, :dtstart, :dtend]
+
+    def to_h
+      BASIC_ATTRIBUTES.inject({}) {|hsh, attr| hsh[attr] = send(attr).to_s; hsh }
+    end
+
+    def to_json(*args)
+      to_h.to_json(*args)
+    end
+
+    def to_s
+      "<#{self.class} #{self.to_h}>"
+    end
+
+    def inspect
+      to_s
+    end
+
+    def recurring?
+      ! rrule.empty?
+    end
+
+    def occurrences_this_month
+      return nil unless recurring?
+      occurrences_between(*this_month).map {|occ| Occurrence.new(occ, self) }
+    end
+
+    private
+
+    def this_month
+      [Date.today.beginning_of_month, Date.today.next_month.beginning_of_month]
+    end
+
+  end
+end
diff --git a/lib/sublab_calendar/occurrence.rb b/lib/sublab_calendar/occurrence.rb
new file mode 100644
index 0000000..fad58a8
--- /dev/null
+++ b/lib/sublab_calendar/occurrence.rb
@@ -0,0 +1,38 @@
+module SublabCalendar
+
+  class Occurrence < SimpleDelegator
+
+    attr_reader :event
+
+    def initialize(occurrence, event)
+      @event = event
+      super(occurrence)
+    end
+
+    def to_h
+      {
+        summary: summary,
+        start:   start_time,
+        end:     end_time
+      }
+    end
+
+    def inspect
+      to_s
+    end
+
+    def summary
+      event.summary
+    end
+
+    def description
+      event.description
+    end
+
+    def to_s
+      "<#{self.class} #{self.to_h}>"
+    end
+
+  end
+
+end