Download file cordova ionic

  $scope.download = (url) ->
    filename = url.split('/').pop()
    url = encodeURI(url)
    if ionic.Platform.isIOS()
      directory = cordova.file.documentsDirectory
    else
      directory = "#{cordova.file.externalRootDirectory}Download/"

    document.addEventListener 'deviceready', (->
      $ionicLoading.show template: 'Loading...'
      targetPath = directory + filename
      trustHosts = true
      options = {}
      $cordovaFileTransfer.download(url, targetPath, options, trustHosts).then ((result) ->
        $ionicLoading.hide()
        toastr.success "You have successfully downloaded file to #{targetPath}!"
      ), ((err) ->
        $ionicLoading.hide()
        toastr.error 'Something went wrong! Try again'
      ), (progress) ->
    ), false