package application.controller

import application.model.MessageListener
import application.model.Vessel
import application.model.observableSelectedVessel
import application.model.observableVessel
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 javafx.scene.control.MultipleSelectionModel
import javafx.scene.control.SelectionMode
import javafx.scene.input.MouseEvent
import java.net.URL
import java.util.*


class VesselListPanelController : Initializable, MessageListener {
    @FXML
    var shipListView: ListView<String?> = ListView()

    private var shipList: ObservableList<String?> = FXCollections.observableArrayList()

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


        shipListView.items = shipList
        observableVessel.listeners.add(this)
        shipListView.selectionModel.selectedItemProperty().addListener { _, _, newValue ->
            if (newValue == null) {
                observableSelectedVessel.value = Vessel(null)
            } else {
                observableSelectedVessel.value = observableVessel.vessels[newValue]!!
            }
        }
        setCellFactory()
    }

    override fun onValueChanged(newValue: MutableMap<String?, Vessel>) {
        shipList.clear()
        shipList.addAll(newValue.keys)
    }

    private fun setCellFactory() {
        val selectionModel: MultipleSelectionModel<String?>? = shipListView.selectionModel
        selectionModel?.selectionMode = SelectionMode.SINGLE
        shipListView.setCellFactory {
            val cell = ListCell<String?>()
            cell.textProperty().bind(cell.itemProperty())
            cell.addEventFilter(MouseEvent.MOUSE_PRESSED) { event: MouseEvent ->
                shipListView.requestFocus()
                if (!cell.isEmpty) {
                    val index = cell.index
                    if (selectionModel!!.selectedIndices.contains(index)) {
                        selectionModel.clearSelection()
                    } else {
                        selectionModel.select(index)
                    }
                    event.consume()
                }
            }
            cell
        }
    }
}