import groovy.xml.StreamingMarkupBuilder
import java.text.SimpleDateFormat

class KmlQueryController
{
  def grailsApplication
  def rasterEntrySearchService
  def sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'")

  def getkml = {
    println params

    // Google sends the BBOX with the request

    if ( params.BBOX )
    {
      def bounds = params.BBOX?.split(',')
      params.aoiMinLon = bounds[0]
      params.aoiMinLat = bounds[1]
      params.aoiMaxLonn = bounds[2]
      params.aoiMaxLat = bounds[3]
    }


    def queryParams = new RasterEntryQuery()

    bindData(queryParams, params)

    params.max = 10
    params.order = 'desc'
    params.sort = 'acquisitionDate'

    queryParams.endDate = new Date()

    log.info(queryParams.toMap())

    def rasterEntries = rasterEntrySearchService.runQuery(queryParams, params)
    def kmlbuilder = new StreamingMarkupBuilder()
    kmlbuilder.encoding = "UTF-8"

    def urlPrefix = "http://${request.serverName}:${request.serverPort}"
    def urlSuffix = createLink(url: [controller: "ogc", action: "wms"])
    String serviceAddress = "${urlPrefix}${urlSuffix}"


    def kmlnode = {
      mkp.xmlDeclaration()
      kml("xmlns": "http://earth.google.com/kml/2.1") {
        Folder() {
          name("OMAR_WMS")
          rasterEntries?.each {rasterEntry ->
            def acquisition = (rasterEntry?.acquisitionDate) ? sdf.format(rasterEntry?.acquisitionDate) : null

            GroundOverlay() {
              name(rasterEntry.mainFile.name)
              open("1")
              visibility("1")
              Icon() {
                href("${serviceAddress}?version=1.1.1&REQUEST=GetMap&layers=${rasterEntry?.id}&SRS=EPSG:4326&WIDTH=512&HEIGHT=512&TRANSPARENT=TRUE&FORMAT=image/png&")
                viewRefreshMode("onStop")
                viewRefreshTime("2")
                viewBoundScale("0.85")
              }
              LatLonBox() {
                north(rasterEntry?.groundGeom?.bounds?.maxLat)
                south(rasterEntry?.groundGeom?.bounds?.minLon)
                east(rasterEntry?.groundGeom?.bounds?.maxLat)
                west(rasterEntry?.groundGeom?.bounds?.minLat)
              }
              if ( acquisition )
              {
                TimeStamp() {
                  when(acquisition)
                }
              }
            }
          }
        }
      }
    }
    def kmlwriter = new StringWriter()

    kmlwriter << kmlbuilder.bind(kmlnode)
    render(contentType: "application/vnd.google-earth.kml+xml", text: kmlwriter.buffer, encoding: "UTF-8")


  }
}