package nova.monadic_sfx.ui.components.todo

import monix.bio.Task
import nova.monadic_sfx.implicits.FontIcon
import nova.monadic_sfx.implicits.IconLiteral
import nova.monadic_sfx.implicits.JFXListView
import nova.monadic_sfx.implicits.JavaFXMonixObservables._
import scalafx.Includes._
import scalafx.beans.property.StringProperty
import scalafx.scene.control.ContextMenu
import scalafx.scene.control.ListCell
import scalafx.scene.control.SelectionMode
import scalafx.scene.layout.HBox
import scalafx.scene.text.Text
import nova.monadic_sfx.util.reactive._
import org.gerweck.scalafx.util._
import scalafx.beans.property.ObjectProperty
import nova.monadic_sfx.implicits.MenuItem
import monix.execution.cancelables.CompositeCancelable

object TodoListView {
  def apply(
      store: MonixProSubject[
        TodoListStore.Command,
        (TodoListStore.Command, TodoListStore.State)
      ]
  ): Task[JFXListView[Todo]] =
    Task.deferAction(implicit s =>
      Task {
        val cc = CompositeCancelable()
        val todos =
          store.map { case (_, state) => state.todos }

        new JFXListView[Todo] {
          def selectedItems = selectionModel().selectedItems.view

          cc += items <-- todos

          val emptyCell = ObjectProperty(new HBox)
          cellFactory = _ =>
            new ListCell[Todo] {
              val _text = StringProperty("")
              val _graphic = ObjectProperty(
                new HBox {
                  children = Seq(
                    new FontIcon {
                      iconSize = 10
                      iconLiteral = IconLiteral.Gmi10k
                    },
                    new Text {
                      text <== _text
                    }
                  )
                }
              )

              item.asOption.map(
                _.fold("")(todo => s"${todo.id} - ${todo.content}")
              ) --> _text

              graphic <== item.asOption.flatMap(
                _.fold(emptyCell)(_ => _graphic)
              )

            }

          selectionModel().selectionMode = SelectionMode.Multiple

          contextMenu = new ContextMenu {
            items ++= Seq(
              new MenuItem {
                text = "Add"
                obsAction.useLazy(TodoListStore.Add("blah3")) --> store
              },
              new MenuItem {
                text = "Delete"
                obsAction.useIterable(_ =>
                  selectedItems
                    .map(todo => TodoListStore.Delete(todo.id))
                    .toList
                ) --> store
              },
              new MenuItem {
                text = "Edit"
              }
            )
          }
        }
      }
    )
}