package application.controller
  
  import application.model.*
  import javafx.collections.FXCollections
  import javafx.collections.ObservableList
  import javafx.fxml.FXML
  import javafx.fxml.Initializable

  import javafx.scene.control.ListCell
  import javafx.scene.control.ListView

  import kotlinx.coroutines.GlobalScope
  import kotlinx.coroutines.launch

  import org.charts.dataviewer.api.config.DataViewerConfiguration
  import org.charts.dataviewer.api.data.PlotData

  import org.charts.dataviewer.api.trace.ScatterTrace
  import org.charts.dataviewer.javafx.JavaFxDataViewer
  import org.charts.dataviewer.utils.TraceColour

  import org.charts.dataviewer.utils.TraceVisibility

  import java.net.URL
  import java.util.*
  
  
  class DataPanelController : Initializable, SelectedVesselListener {
      private var dataList: ObservableList<Pair<String, ArrayList<MessageData?>>> = FXCollections.observableArrayList()
      private lateinit var timeData: ArrayList<MessageData?>

      private val latitude: ArrayList<MessageData?> = arrayListOf()
      private val longitude: ArrayList<MessageData?> = arrayListOf()
      private val speedOverGround: ArrayList<MessageData?> = arrayListOf()
      private val courseOverGround: ArrayList<MessageData?> = arrayListOf()
      private val heading: ArrayList<MessageData?> = arrayListOf()
      private val vesselName: ArrayList<MessageData?> = arrayListOf()
      private val imo: ArrayList<MessageData?> = arrayListOf()
      private val callSign: ArrayList<MessageData?> = arrayListOf()
      private val vesselType: ArrayList<MessageData?> = arrayListOf()
      private val status: ArrayList<MessageData?> = arrayListOf()
      private val length: ArrayList<MessageData?> = arrayListOf()
      private val width: ArrayList<MessageData?> = arrayListOf()
      private val draft: ArrayList<MessageData?> = arrayListOf()
      private val cargo: ArrayList<MessageData?> = arrayListOf()
  
      private var selectedItem: Pair<String, ArrayList<MessageData?>>? = null

  
      @FXML

      var dataListView = ListView<Pair<String, ArrayList<MessageData?>>>()

      @FXML

      var dataViewer = JavaFxDataViewer()

      private val plotData = PlotData()
      private val config = DataViewerConfiguration()

  
      override fun initialize(location: URL?, resources: ResourceBundle?) {

          setObservableSelectedVesselListener()
          dataListView.items = dataList

          config.showLegend(false)

          config.setLegendInsidePlot(false)

          setObservableCurrentTimeListener()

          dataListView.setCellFactory {
              object : ListCell<Pair<String, ArrayList<MessageData?>>?>() {
                  override fun updateItem(item: Pair<String, ArrayList<MessageData?>>?, empty: Boolean) {
                      super.updateItem(item, empty)
                      text = if (empty) {
                          null
                      } else {
                          item?.first
                      }
                  }
              }
          }
  
          dataListView.selectionModel.selectedItemProperty().addListener { _, _, newValue ->

              selectedItem = newValue

              updateDataList(observableSelectedVessel.value)

              plot(newValue)
          }
  
          plotData.allTraces.clear()
          config.setxAxisTitle("")
          config.setyAxisTitle("")
          config.plotTitle = ""
          dataViewer.updateConfiguration(config)
          dataViewer.updatePlot(plotData)
          initDataList()

      }

      private fun plot() {

          if (selectedItem != null || observableSelectedVessel.value == Vessel(null)) {

              GlobalScope.launch {
                  plot(selectedItem)

              }

          }
      }

      private fun plot(data: Pair<String, ArrayList<MessageData?>>?) {
          if (data == null) {
              plotData.allTraces.clear()
              config.setxAxisTitle("")
              config.setyAxisTitle("")
              dataViewer.updateConfiguration(config)

              dataViewer.resetPlot()

              return

          }else if (data.second.size < timeData.size) return

          val getValueVisitorX = GetValueVisitor()
          val getValueVisitorY = GetValueVisitor()

          val arrayListStringX = arrayListOf<String>()
  //        val arrayListDoubleX = arrayListOf<Double>()
          val arrayListStringY = arrayListOf<String>()
          val arrayListDoubleY = arrayListOf<Double>()

          for (x in 0 until timeData.size) {
              timeData[x]?.accept(getValueVisitorX)
              data.second[x]?.accept(getValueVisitorY)

  
              if (getValueVisitorY.value.toDoubleOrNull() == null) {

                  arrayListStringX.add(getValueVisitorX.value)
                  arrayListStringY.add(getValueVisitorY.value)

              } else {

                  arrayListStringX.add(getValueVisitorX.value)
                  arrayListDoubleY.add(getValueVisitorY.value.toDouble())

              }

          }

          val scatterTrace = ScatterTrace<Any>()
          scatterTrace.traceColour = TraceColour.RED
          scatterTrace.traceVisibility = TraceVisibility.TRUE

          val serieStringX: Array<String> = arrayListStringX.toTypedArray()
  //            val serieDoubleX: Array<Double> = arrayListDoubleX.toTypedArray()
          val serieStringY: Array<String> = arrayListStringY.toTypedArray()
          val serieDoubleY: Array<Double> = arrayListDoubleY.toTypedArray()
  
          if (getValueVisitorY.value.toDoubleOrNull() == null) {
              scatterTrace.setxArray(serieStringX)
              scatterTrace.setyArray(serieStringY)
          } else {
              scatterTrace.setxArray(serieStringX)
              scatterTrace.setyArray(serieDoubleY)

          }

          config.plotTitle = ""

          config.setxAxisTitle("Time (s)")
          config.setyAxisTitle(data.first)
          dataViewer.resetPlot()
          plotData.allTraces.clear()
          plotData.addTrace(scatterTrace)

          dataViewer.updateConfiguration(config)
          dataViewer.updatePlot(plotData)

      }

      private fun setObservableSelectedVesselListener() {
          observableSelectedVessel.listeners.add(this)
      }
  
      private fun populateTime(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllTimeBeforeSelectedTime()
          } else {
              vessel.getAllTime()
          }

      }

      private fun populateLatitude(vessel: Vessel): ArrayList<MessageData?> {
          return if (observableIsReplayState.value) {
              vessel.getAllLatitudeBeforeSelectedTime()
          } else {
              vessel.getAllLatitude()
          }

      }
  
      private fun populateLongitude(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllLongitudeBeforeSelectedTime()
          } else {
              vessel.getAllLongitude()
          }

      }
  
      private fun populateSpeedOverGround(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllSpeedOverGroundBeforeSelectedTime()
          } else {
              vessel.getAllSpeedOverGround()
          }

      }
  
      private fun populateCourseOverGround(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllCourseOverGroundBeforeSelectedTime()
          } else {
              vessel.getAllCourseOverGround()
          }

      }
  
      private fun populateHeading(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllHeadingBeforeSelectedTime()
          } else {
              vessel.getAllHeading()
          }

      }

      private fun populateVesselName(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllVesselNameBeforeSelectedTime()
          } else {
              vessel.getAllVesselName()
          }

      }

      private fun populateIMO(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllIMOBeforeSelectedTime()
          } else {
              vessel.getAllIMO()
          }

      }

      private fun populateCallSign(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllCallSignBeforeSelectedTime()
          } else {
              vessel.getAllCallSign()
          }

      }

      private fun populateVesselType(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllVesselTypeBeforeSelectedTime()
          } else {
              vessel.getAllVesselType()
          }

      }

      private fun populateStatus(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllStatusBeforeSelectedTime()
          } else {
              vessel.getAllStatus()
          }

      }

      private fun populateLength(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllLengthBeforeSelectedTime()
          } else {
              vessel.getAllLength()
          }

      }

      private fun populateWidth(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllWidthBeforeSelectedTime()
          } else {
              vessel.getAllWidth()
          }

      }

      private fun populateDraft(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllDraftBeforeSelectedTime()
          } else {
              vessel.getAllDraft()
          }

      }

      private fun populateCargo(vessel: Vessel): ArrayList<MessageData?> {

          return if (observableIsReplayState.value) {
              vessel.getAllCargoBeforeSelectedTime()
          } else {
              vessel.getAllCargo()
          }

      }

      private fun initDataList() {

          val data = arrayListOf<Pair<String, ArrayList<MessageData?>>>()

          data.add(Pair("Latitude", latitude))
          data.add(Pair("Longitude", longitude))
          data.add(Pair("Speed Over Ground", speedOverGround))
          data.add(Pair("Course Over Ground", courseOverGround))
          data.add(Pair("Heading", heading))
          data.add(Pair("Vessel Name", vesselName))
          data.add(Pair("IMO", imo))
          data.add(Pair("Call Sign", callSign))
          data.add(Pair("Vessel Type", vesselType))
          data.add(Pair("Status", status))
          data.add(Pair("Length", length))
          data.add(Pair("Width", width))
          data.add(Pair("Draft", draft))
          data.add(Pair("Cargo", cargo))
  
          dataList.addAll(data)
      }
  
      private fun updateDataList(vessel: Vessel) {

          timeData = populateTime(vessel)

          if(dataListView.selectionModel.selectedItem == null) return

          when (dataListView.selectionModel.selectedItem.first) {
              "Latitude" -> {
                  latitude.clear()
                  latitude.addAll(populateLatitude(vessel))
              }
              "Longitude" -> {
                  longitude.clear()
                  longitude.addAll(populateLongitude(vessel))
              }
              "Speed Over Ground" -> {
                  speedOverGround.clear()
                  speedOverGround.addAll(populateSpeedOverGround(vessel))
              }
              "Course Over Ground" -> {
                  courseOverGround.clear()
                  courseOverGround.addAll(populateCourseOverGround(vessel))
              }
              "Heading" -> {
                  heading.clear()
                  heading.addAll(populateHeading(vessel))
              }
              "Vessel Name" -> {
                  vesselName.clear()
                  vesselName.addAll(populateVesselName(vessel))
              }
              "IMO" -> {
                  imo.clear()
                  imo.addAll(populateIMO(vessel))
              }
              "Call Sign" -> {
                  callSign.clear()
                  callSign.addAll(populateCallSign(vessel))
              }
              "Vessel Type" -> {
                  vesselType.clear()
                  vesselType.addAll(populateVesselType(vessel))
              }
              "Status" -> {
                  status.clear()
                  status.addAll(populateStatus(vessel))
              }
              "Length" -> {
                  length.clear()
                  length.addAll(populateLength(vessel))
              }
              "Width" -> {
                  width.clear()
                  width.addAll(populateWidth(vessel))
              }
              "Draft" -> {
                  draft.clear()
                  draft.addAll(populateDraft(vessel))
              }
              "Cargo" -> {
                  cargo.clear()
                  cargo.addAll(populateCargo(vessel))
              }
          }

      }

      private fun setObservableCurrentTimeListener() {
          observableCurrentTime.listeners.add(object : CurrentTime {
              override fun onValueChanged(newValue: Int) {
                  updateDataList(observableSelectedVessel.value)
                  plot()
              }
          })
      }

      override fun onValueChanged(newValue: Vessel) {
          updateDataList(newValue)
          plot()

      }
  
  }