define ['angular', 'lodash', 'timeSeries', 'volume'], (ng, _) ->
  imageSequence = ng.module('qiprofile.imagesequence',
                            ['qiprofile.timeseries', 'qiprofile.volume'])
  
  imageSequence.factory 'ImageSequence', [
    'TimeSeries', 'Volume', (TimeSeries, Volume) ->
      # Recursively extends the image sequence time series and
      # volumes.
      #
      # @param imageSequence the scan or registration REST object
      #   to extend
      # @returns the extended REST image sequence object
      extend: (imageSequence) ->
        # Extend the time series.
        if imageSequence.timeSeries?
          TimeSeries.extend(imageSequence.timeSeries, imageSequence)

        # Extend each volume.
        if imageSequence.volumes?
          for image, index in imageSequence.volumes.images
            Volume.extend(image, imageSequence, index + 1)

        # @returns whether this image sequence contain more than one
        #   volume
        imageSequence.isMultiVolume = ->
          imageSequence.volumes? and imageSequence.volumes.images.length > 1

        # Return the augmented image sequence.
        imageSequence
  ]