1 files changed, 34 insertions, 0 deletions

diff --git a/lib/chaos_calendar.rb b/lib/chaos_calendar.rb
new file mode 100644
index 0000000..22ad934
--- /dev/null
+++ b/lib/chaos_calendar.rb
@@ -0,0 +1,34 @@
+require 'vpim/repo'
+
+class Occurrence
+  def initialize start, event, node
+    @dtstart = start
+    @event = event
+    @node = node
+  end
+  attr_reader :dtstart, :event, :node
+end
+
+class ChaosCalendar
+  def initialize
+    @calendar = {}
+  end
+
+  def push cal, node
+    Vpim::Icalendar.decode( cal ).each { |c| c.events.each { |e| @calendar[e] = node } }
+  end
+
+  def occurrences start_time, end_time
+    occurr = []
+    @calendar.each { |e, node|
+      if e.occurs_in?( start_time, end_time )
+        e.occurences( end_time ) { |t|
+          occurr << Occurrence.new(t,e,node) if (t + (e.duration || 0)) >= start_time
+        }
+      end
+    }
+
+    return occurr.sort { |lhs, rhs| lhs.dtstart <=> rhs.dtstart }
+  end
+
+end