"at" command shoing who is now at warsaw hackerspace.

plugins/commands/at.rb

@@ -0,0 +1,23 @@
+require 'net/http'
+require 'json'
+require 'time'
+
+Client.register_command("at") { |args|
+    now = []
+    recently = []
+    r_msg = ""
+    h = JSON.parse(Net::HTTP.get(URI(Config[:commands][:at][:url])))
+    h["users"].each { |u|
+        if (Time.now.to_i - u["timestamp"]) > 600 then
+            recently << u["login"]
+        else
+            now << u["login"]
+        end
+    }
+
+    r_msg += "now: #{now.join(' ')} " if not now.empty?
+    r_msg += "recently: #{recently.join(' ')} " if not recently.empty?
+    r_msg += "unknown: #{h["unknown"]} " if h["unknown"] > 0
+
+    r_msg
+}