IMAP sort of works now

Gemfile

@@ -1,4 +1,6 @@
 source :gemcutter
 
+gem 'ruby-debug'
+
 # Specify your gem's dependencies in enso.gemspec
 gemspec

Gemfile.lock

@@ -8,9 +8,16 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
+    columnize (0.3.2)
     eventmachine (0.12.10)
     json (1.4.6)
+    linecache (0.43)
     roauth (0.0.3)
+    ruby-debug (0.10.4)
+      columnize (>= 0.1)
+      ruby-debug-base (~> 0.10.4.0)
+    ruby-debug-base (0.10.4)
+      linecache (>= 0.3)
     twitter-stream (0.1.10)
       eventmachine (>= 0.12.8)
       roauth (>= 0.0.2)
@@ -22,4 +29,5 @@ DEPENDENCIES
   bundler (>= 1.0.0)
   enso!
   json
+  ruby-debug
   twitter-stream (~> 0.1.10)

lib/enso/stream/imap.rb

@@ -4,27 +4,37 @@ module Stream
   class IMAP < Base
 
     def initialize(domain, port, ssl, username, password)
-      @imap = Net::IMAP.new(domain, port, ssl)
-      @imap.login(username, password)
-      @imap.select("INBOX")
+      @domain = domain
+      @port = port
+      @ssl = ssl
+      @username = username
+      @password = password
 
-      @imap.add_response_handler proc { |resp|
-        if resp.name == "EXISTS"
-          fetch_message(resp.data)
-        end 
-      }
+      @imap = Net::IMAP.new(@domain, @port, @ssl)
+      @imap.login(@username, @password)
+      @imap.select("INBOX")
+
+      @top_mid = @imap.search('ALL').last
+      @top_uid = @imap.fetch(@top_mid, 'UID')[0].attr['UID']
     end 
 
     def tick_quantum
       15
     end 
-
-    def fetch_message(data)
-      @imap.fetch([data], "(ENVELOPE)")
-    end 
 
     def tick
-      @imap.noop
+      mids = []
+      query = "UID #{@top_uid}:*"
+      @imap.check
+      @imap.search(query).each do |message_id|
+        next if message_id == @top_mid 
+        @top_mid = [@top_mid, message_id].max
+        mids << message_id.to_i
+      end 
+      messages = mids.any? ? @imap.fetch(mids, "(UID ENVELOPE)") : []
+      @top_uid = [@top_uid, messages.map{|m|m.attr['UID']}.max].compact.max
+
+      messages.map{|m|format_message(m.attr['ENVELOPE'])}
     end 
 
     def format_message(msg)