 # <thing>-- - take away some of thing's karma
 # karma <thing> - check thing's karma, if <thing> is ommitted get top and bottom 3
 class Karma
+  
   constructor: (@robot) ->
     @cache = {}
+    
+    @increment_responses = [
+      "+1!", "gained a level!", "is on the rise!", "leveled up!"
+    ]
+  
+    @decrement_responses = [
+      "took a hit! Ouch.", "took a dive.", "lost a life.", "lost a level."
+    ]
     
     @robot.brain.on 'loaded', =>
       if @robot.brain.data.karma
         @cache = @robot.brain.data.karma
 
-  add: (thing) ->
+  increment: (thing) ->
     @cache[thing] ?= 0
     @cache[thing] += 1
     @robot.brain.data.karma = @cache
 
-  subtract: (thing) ->
+  decrement: (thing) ->
     @cache[thing] ?= 0
     @cache[thing] -= 1
     @robot.brain.data.karma = @cache
+  
+  incrementResponse: ->
+     @increment_responses[Math.floor(Math.random() * @increment_responses.length)]
+  
+  decrementResponse: ->
+     @decrement_responses[Math.floor(Math.random() * @decrement_responses.length)]
 
   get: (thing) ->
     k = if @cache[thing] then @cache[thing] else 0

module.exports = (robot) ->
  karma = new Karma robot
  robot.hear /(\S+[^+\s])\+\+(\s|$)/, (msg) ->
    karma.add msg.match[1].toLowerCase()
    msg.reply "The operation succeeded."

  robot.hear /(\S+[^-\s])--(\s|$)/, (msg) ->
    karma.subtract msg.match[1].toLowerCase()
    msg.reply "The operation succeeded."

  robot.respond /karma ?(\S*)/, (msg) ->
    if msg.match[1]
      match = msg.match[1].toLowerCase()
      msg.send "\"#{match}\" has #{karma.get(match)} karma."

               "(#{s[s.length-2].karma}), and \"#{s[s.length-3].name}\" " +
               "(#{s[s.length-3].karma})."
      else
        msg.send "There aren't enough items with karma to give a top and bottom 3"