svela.coffee

# Description:
#   svelame will make you feel all warm .. in your head
#
# Dependencies:
#   None
#
# Configuration:
#   None
#
# Commands:
#   hubot svela me - Receive a svela
#   hubot svela bomb N - get N svela

svelas = [
  "http://laughingsquid.com/wp-content/uploads/253.jpg",
  "http://littlemissredhead.files.wordpress.com/2010/12/bearded-knitted-hats2.jpg",
  "https://img1.etsystatic.com/018/0/8022917/il_570xN.473772019_4zbl.jpg",
  "http://1.bp.blogspot.com/_wg2mnzIH9mI/TKuttjGxOWI/AAAAAAAAHlo/CiAl4Sp65NA/s1600/Funny_Beard_Head_Knit_Caps__2.jpg",
  "http://www.geekalerts.com/u/Star-Wars-Ewok-Knit-Hat.jpg",
  "http://brimages.bikeboardmedia.netdna-cdn.com/wp-content/uploads/2009/10/lucha-libre-balaclava-sarahemcc.jpg",
  "http://www.design-moderne.com/wp-content/uploads/2012/07/cat-in-the-hat-dog-hat.jpeg",
  "http://i.dailymail.co.uk/i/pix/2013/01/08/article-2259253-16D099F0000005DC-681_634x744.jpg",
  "http://thestarryeye.typepad.com/.a/6a00d8341cdd0d53ef0177434acde5970d-500wi",
]

shuffle = (a) ->
  for i in [a.length-1..1]
    # Choose random element `j` to the front of `i` to swap with.
    j = Math.floor Math.random() * (i + 1)
    # Swap `j` with `i`, using destructured assignment
    [a[i], a[j]] = [a[j], a[i]]
  # Return the shuffled array.
  a

module.exports = (robot) ->

  robot.respond /svela me/i, (msg) ->
    msg.send msg.random svelas

  robot.respond /svela bomb( (\d+))?/i, (msg) ->
    count = msg.match[2] || 5
    msg.send svela for svela in shuffle(svelas)[1..count]