 #   None
 #
 # Configuration:
-#   None
+#   KARMA_ALLOW_SELF
 #
 # Commands:
 #   <thing>++ - give thing some karma

  decrementResponse: ->
     @decrement_responses[Math.floor(Math.random() * @decrement_responses.length)]

  get: (thing) ->
    k = if @cache[thing] then @cache[thing] else 0
    return k


module.exports = (robot) ->
  karma = new Karma robot
  allow_self = process.env.KARMA_ALLOW_SELF or "true"

  robot.hear /(\S+[^+:\s])[: ]*\+\+(\s|$)/, (msg) ->
    subject = msg.match[1].toLowerCase()
    if allow_self is true or msg.message.user.name.toLowerCase() != subject
      karma.increment subject
      msg.send "#{subject} #{karma.incrementResponse()} (Karma: #{karma.get(subject)})"
    else
      msg.send msg.random karma.selfDeniedResponses(msg.message.user.name)

  robot.hear /(\S+[^-:\s])[: ]*--(\s|$)/, (msg) ->
    subject = msg.match[1].toLowerCase()
    if allow_self is true or msg.message.user.name.toLowerCase() != subject
      karma.decrement subject
      msg.send "#{subject} #{karma.decrementResponse()} (Karma: #{karma.get(subject)})"
    else
      msg.send msg.random karma.selfDeniedResponses(msg.message.user.name)

  robot.respond /karma empty ?(\S+[^-\s])$/i, (msg) ->
    subject = msg.match[1].toLowerCase()
    if allow_self is true or msg.message.user.name.toLowerCase() != subject
      karma.kill subject
      msg.send "#{subject} has had its karma scattered to the winds."
    else
      msg.send msg.random karma.selfDeniedResponses(msg.message.user.name)

  robot.respond /karma( best)?$/i, (msg) ->
    verbiage = ["The Best"]
