fruits = {}

main = ->
  array = [
    {
      fruit: 'apple'
      param: 1
    }
    {
      fruit: 'banana'
      param: 2
    }
    {
      fruit: 'cherry'
      param: 3
    }
  ]

  array_r = array.reverse()
  callback_chain = null
  #把 array 的事件反過來讀取，以建立 callback chain
  #產生 callback function

  createFunction = (funcToInvoke, p, callback) ->
    ->
      funcToInvoke.call this, p, callback
      return

  #產生 callback chain

  callbackChainFactory = (fruit, param, callback) ->
    createFunction fruit, param, callback

  while array_r.length
    current_fruit = array_r.shift()
    fruit = current_fruit.fruit
    #fruit
    fruitFunction = fruits[fruit]
    #字串轉實際 function
    param = current_fruit.param
    #parameter
    callback_chain = callbackChainFactory(fruitFunction, param, callback_chain)
    #建立　callback function
  #執行 callback chain
  callback_chain()
  return

fruits.apple = (p, callback) ->
  console.log 'apple, p = ' + p
  setTimeout (->
    if typeof callback == 'function'
      callback()
    return
  ), 1000
  return

fruits.banana = (p, callback) ->
  console.log 'banana, p = ' + p
  setTimeout (->
    if typeof callback == 'function'
      callback()
    return
  ), 2000
  return

fruits.cherry = (p, callback) ->
  console.log 'cherry, p = ' + p
  setTimeout (->
    if typeof callback == 'function'
      callback()
    return
  ), 3000
  return

main()

# ---
# generated by js2coffee 2.2.0