plupload directive code

 .directive('pluploader', ($log,dialogsSvc) ->
   d = {
     restrict: 'E'
     scope: {
       uploaderName:     '@'
       browseButtonId:   '@'
       onFileAdded:      '&'
       upload:           '&'
       removeAttachment: '&'
     }
     templateUrl: 'assets/utility/pluploader_directive.html'

     controller: ($scope, $element, $attrs) ->
       $scope.attachments = []

       $scope.uploadError = (up, args) =>
         $log.log('[uploadError]: ' + JSON.stringify(args))
         switch args.code
           when plupload.FILE_SIZE_ERROR
             dialogsSvc.alert("La dimensione del file " + args.file.name + " è superiore al massimo consentito!")
             $scope.$apply($scope.removeAttachment(args.file))

       $scope.uploadProgress = (up, file) =>
         #$log.log('[uploadProgress]: ' + JSON.stringify(file))
         $scope.$apply()

       $scope.uploadComplete = (up, files) =>
         #$log.log('[uploadComplete]: ' + JSON.stringify(files))
         $scope.$apply()

       $scope.fileAdded = (up, files) =>
         $scope.$apply(
           if !$scope.onFileAdded?
             $scope.onFileAdded({file: files[0]})
           $scope.attachments.push {id: f.id, name: f.name, size: plupload.formatSize(f.size)} for f in files
         )

       $scope.removeAttachment = (file) ->
         $log.log('[removeAttachment]: ' + JSON.stringify(file))
         $scope.uploader.removeFile(file)
         $scope.attachments = []
         $scope.attachments.push f for f in $scope.uploader.files

       $scope.upload = ->
         $scope.uploader.start()

       $attrs.$observe('uploaderName', (value) =>
         return if !value?
         $scope.uploader = new plupload.Uploader({
           runtimes: "html5",
           url: "api/v1/media/upload.json",
           container: $attrs.uploaderName,
           browse_button: $attrs.browseButtonId,
           max_file_size: $attrs.maxFileSize,
           chunk_size: $attrs.chunkSize,
           multipart: true,
           multipart_params: {
             authenticity_token: $("meta[name='csrf-token']").attr('content')
           }
           init: {
             Error: $scope.uploadError
             UploadProgress: $scope.uploadProgress
             UploadComplete: $scope.uploadComplete
           }
         })

         $scope.uploader.bind('FilesAdded', $scope.fileAdded)
         $scope.uploader.init()
       )
   }
   return d
 )