saver.coffee

class TextSaver
    constructor: (@filename, @options) ->
    @q = require 'Q'
    save: (data) ->
      def = @q.defer()
      def.resolve data
      def.promise

class CloudSaver extends TextSaver
    constructor: (@filename, @options) ->
        super @filename, @options
    save: (data) ->
        def = @q.defer()
        $( =>
            $.post "#{@options.url}/#{@filename}", data, =>
                def.resolve "Saved '#{data}' to #{@filename} at #{@options.url}."
            , =>
                def.reject false
        )
        def.promise

class FileSaver extends TextSaver
    constructor: (@filename, @options) ->
        super @filename, @options
        @fs = require 'fs'
    save: (data) ->
        def = @q.defer()
        @fs.writeFile @filename, data, (err) =>
            if err? then def.reject err
            else def.resolve "Saved '#{data}' to #{@filename} in #{@options.directory}."
        def.promise

filename = "temp.txt"
data = "Example data"

saver = if window?
    new CloudSaver filename, url: 'http://localhost' # => Saved "Example data" to temp.txt at http://localhost
else if root?
    new FileSaver filename, directory: './' # => Saved "Example data" to temp.txt in ./

init = () ->
  saver.save(data).then (d) ->
    console.log d
    return

init()