package listnavapp

import javafx.beans.property.SimpleBooleanProperty
import javafx.beans.property.SimpleObjectProperty
import javafx.beans.property.SimpleStringProperty
import javafx.scene.control.TextField
import javafx.scene.layout.Priority
import javafx.util.Duration
import tornadofx.*
import java.time.LocalDate

class Todo(descr : String = "New Item", completed : Boolean = false, completedBy : LocalDate? = null) {
    val descrProperty = SimpleStringProperty(descr)
    val completedProperty = SimpleBooleanProperty(completed)
    val completedByProperty = SimpleObjectProperty<LocalDate>(completedBy)
}

class TodoItemViewModel : ItemViewModel<Todo>() {
    val selectedDescr  = bind(Todo::descrProperty)
    val selectedCompleted  = bind(Todo::completedProperty)
    val selectedCompletedBy = bind(Todo::completedByProperty)

    init {
        autocommitProperties.addAll(selectedDescr, selectedCompleted, selectedCompletedBy)
    }
}

class ListNavController : Controller() {

    val data = mutableListOf<Todo>().observable()

    fun newItem() {
        data.add( Todo())
    }
}

class ListDetailsView : View("List Nav - Details") {

    val mainView : ListNavView by inject()
    val todoItemViewModel : TodoItemViewModel by inject()

    var tf : TextField by singleAssign()

    override val root = vbox {

        button("<") {
            action {
                this@ListDetailsView.replaceWith(
                        mainView,
                        ViewTransition.Slide(Duration.seconds(0.5), tornadofx.ViewTransition.Direction.RIGHT)
                )
            }
        }
        form {
            fieldset {
                field("Descr") {
                    tf = textfield(todoItemViewModel.selectedDescr)
                }
                field("Completed") {
                    checkbox {
                        bind(todoItemViewModel.selectedCompleted)
                    }
                }
                field("Completed By") {
                    datepicker(todoItemViewModel.selectedCompletedBy)
                }
            }
        }

        spacing = 4.0
        paddingTop = 4.0
    }

    override fun onDock() = tf.requestFocus()
}

class TodoListItemFragment : ListCellFragment<Todo>() {
    val model = TodoItemViewModel().bindTo(this)

    override val root = hbox {
        checkbox(property = model.selectedCompleted)
        vbox {
            label(model.selectedDescr)
            label(model.selectedCompletedBy, converter = javafx.util.converter.LocalDateStringConverter())
        }
    }
}

class ListNavView : View("List Nav") {

    val c : ListNavController by inject()
    val detailsView : ListDetailsView by inject()
    val todoItemViewModel : TodoItemViewModel by inject()

    override val root = vbox {
        button("+") { action { c.newItem() } }
        listview(c.data) {
            bindSelected(todoItemViewModel)
            onDoubleClick {
                this@ListNavView.replaceWith(detailsView, ViewTransition.Slide(Duration.seconds(0.5)))
            }
            cellFragment(TodoListItemFragment::class)
            vgrow = Priority.ALWAYS
        }

        prefHeight = 480.0
        prefWidth = 320.0
        spacing = 4.0
        paddingTop = 4.0
    }
}

class ListNavApp : App(ListNavView::class)

fun main(args: Array<String>) {
    launch<ListNavApp>(args)
}