# Compile: coffee -c game.coffee
# Run: coffee game.coffee
# Dependencies: underscore.js / userscore.coffee and backbone.js

# Check if the libs we need are already defined
# When running in browser you will need to bundle or add script tags to include these libs
if not _?
  require('underscore')
if Backbone?
  Events = Backbone.Events
else
  {Events} = require('./backbone.js')

class GameTimer

  constructor: (@time, @interval) ->
    _.extend(this, Events)
    @interval ?= 1000

  start: ->
    @counter = 0
    @ticker = setInterval( (=> @tick()) , @interval)
    @trigger('start')

  tick: ->
    @counter++
    @trigger('tick', {total: @time, counter: @counter, remaining: @time-@counter})
    if @counter >= @time
      clearInterval(@ticker)
      @trigger('finished')

  pause: ->
    clearInterval(@ticker)
    @trigger('paused')

  resume: ->
    @ticker = setInterval( (=> @tick()) , @interval)
    @trigger('resume')

class Game

  constructor: (@data)->
    console.log("new game, game has " + @data['levels'].length+ " levels")

  startLevel: (level)->
    @level = _(@data['levels']).select((x)->x['name']==level)[0]
    @position = 0
    @score = 0
    @timer = new GameTimer(@level['time'])
    @timer.start()
    @timer.pause()
    @timer.bind('finished', (=> @outOfTime()))
    @showQuestion()

  showQuestion: ->
    @timer.resume()
    @question = @level['questions'][@position]
    console.log(@question['question'])
    _(@question['answers']).each (answer) ->
      console.log(answer)
      @score++

  answer: (idx)->
    if @question['answer'] is idx
      console.log('Correct answer!')
      @timer.pause()
    else
      console.log('Incorrect answer! Try again??')
      @timer.pause()

  outOfTime: ->
    console.log("Too slow!")
    @gameOver()

  gameOver: ->
    console.log("You scored: "+@score)

data =
  levels: [
      {
        name: 'easy',
        time: 10,
        questions: [
          { question: "what is ?", answers: ['foo','boo','coo'], answer: 0 }
          { question: "what are ?", answers: ['foo','boo','coo'], answer: 2 }
          { question: "what do ?", answers: ['foo','boo','coo'], answer: 1 }
        ]
      },{
        name: 'medium'
        time: 120,
        questions: [
            { question: "what is ?", answers: ['foo','boo','coo'], answer: 0 }
            { question: "what are ?", answers: ['foo','boo','coo'], answer: 2 }
            { question: "what do ?", answers: ['foo','boo','coo'], answer: 1 }
          ],
      }
    ]

if not window?
  game = new Game(data)
  game.startLevel('easy')