import org.springframework.beans.factory.InitializingBean
import joms.oms.ImageStager

class StagerService implements InitializingBean
{

  def grailsApplication
  def thumbnailService

  boolean transactional = true

  def runStager(Repository repository)
  {

    repository.scanEndDate = new Date()
    repository.scanEndDate = null
    repository.save()

    println "Staging: ${repository.baseDir}"
    println "Start: ${repository.scanStartDate}"

    Thread.start {
      def Stager stager = new Stager(repository)

      stager.scan(repository.baseDir as File)
      repository.save()


      pregenerateThumbnailsForRepository(repository)
      createHistogramsAndOverviews(repository)
      
      repository.scanEndDate = new Date()
      repository.save()

      println " Stop: ${repository.scanEndDate}"
    }
  }

  def pregenerateThumbnailsForRepository(def repository)
  {
    def projectionType = "imagespace"
    def mimeType = "image/jpeg"
    def rasterDataSets = RasterDataSet.findAllByRepository(repository)
    def videoDataSets = VideoDataSet.findAllByRepository(repository)
    def cacheDirPath = grailsApplication.config.thumbnail.cacheDir

    [128, 512].each {size ->
      rasterDataSets.each {rasterDataSet ->
        def rasterEntries = RasterEntry.findAllByRasterDataSet(rasterDataSet)

        rasterEntries.each {rasterEntry ->


          def thumbnailPrefix = "${rasterEntry.id}-${size}-${projectionType}"
          def inputFilename = rasterEntry.mainFile.name
          def entryId = rasterEntry.entryId

          thumbnailService.getThumbnail(cacheDirPath, thumbnailPrefix, size, mimeType,
              inputFilename, entryId, projectionType)
        }
      }

      videoDataSets.each {videoDataSet ->
        VideoFile videoFile = VideoFile.findWhere(videoDataSet: videoDataSet, type: "main")
        def thumbnailPrefix = "${videoDataSet.id}-${size}-${projectionType}"

        thumbnailService.getFrame(cacheDirPath, thumbnailPrefix, size, videoFile.name)
      }
    }
  }

  def createHistogramsAndOverviews(repository)
  {
    def imageStager = new ImageStager()
    def rasterDataSets = RasterDataSet.findAllByRepository(repository)

    rasterDataSets.each {rasterDataSet ->
      def rasterEntries = RasterEntry.findAllByRasterDataSet(rasterDataSet)
      rasterEntries.each {rasterEntry ->
        imageStager.filename = rasterEntry.mainFile.name
        imageStager.setDefaults()
        imageStager.stage()
      }

    }
  }

  void afterPropertiesSet()
  {
  }

}