Hubot script for countdowns

countdown.coffee

# Description:
#   Countdown timer. Starts at the specified number and counts down to 0.
#
# Dependencies:
#   None
#
# Configuration:
#   None
#
# Commands:
#   hubot countdown <x> - Count down from [x] to 0, at one second intervals
#
# Author:
#   erynofwales

module.exports = (robot) ->
    robot.respond /countdown (\d+)/i, (msg) ->
        count = parseInt(msg.match[1], 10)
        tick = () ->
            msg.send "#{count--}"
            if count > 0
                setTimeout(tick, 1000)
            else
                setTimeout(go, 1000)
        go = () ->
            msg.send "go"
        if count <= 0
            return
        tick()