mascotty.scala

package Mascotty

import javafx.application.Application
import javafx.stage.StageStyle
import javafx.stage.Stage
import javafx.scene.Scene
import javafx.scene.layout.VBox
import javafx.scene.paint.Color
import javafx.scene.image.ImageView
import javafx.scene.image.Image
import javafx.scene.control.TextField
import javafx.scene.input.KeyCode
import kotlin.dom.parseXml
import java.util.ArrayList
import org.w3c.dom.Node
import java.util.regex.Pattern
import com.sun.org.apache.xalan.internal.xsltc.compiler.util.NodeType
import org.w3c.dom.Element
import java.io.File
import javax.sound.sampled.AudioSystem
import javax.sound.sampled.Clip

fun main(args:Array<String>){
  Application.launch(Mascotty.javaClass)
}

fun org.w3c.dom.Node.getAttribute(name:String):String?{
  return this.getAttributes().getNamedItem(name)?.getNodeValue()
}

fun org.w3c.dom.Node.childs():ArrayList<Node>{
  val result = ArrayList<Node>()
  val children = this.getChildNodes()
  for(i in 0..children.getLength()){
    val item = children.item(i)
    if(item is Element) result.add(item)
  }
  return result
}

data class Rule(
  val pattern :Pattern,
  val audio   :String? = null,
  val image   :String? = null
)

object Mascotty :Application(){
  var line :Clip? = null

  override fun start(stage :Stage?){
    if(stage == null) return

    val ruleFile  = File("rule.xml")
    if(!ruleFile.canRead()) throw RuntimeException("rule.xml が存在しません。")
    val rules     = ArrayList<Rule>()
    val element   = parseXml(ruleFile).getDocumentElement()!!
    val ruleNodes = element.childs()

    for(ruleNode in ruleNodes){
      val message = ruleNode.getAttribute("message")
      if(message == null) continue

      val children     = ruleNode.childs()

      val audioNodes   = children.filter { (node) -> node.getNodeName() == "audio" }
      val audioRelPath = audioNodes.firstOrNull()?.getAttribute("path")
      val audioAbsPath = if(audioRelPath != null) File(ruleFile.getParent(), audioRelPath).getCanonicalPath() else null

      val imageNodes   = children.filter { (node) -> node.getNodeName() == "image" }
      val imageRelPath = imageNodes.firstOrNull()?.getAttribute("path")
      val imageAbsPath = if(imageRelPath != null) File(ruleFile.getParent(), imageRelPath).getCanonicalPath() else null

      rules.add(Rule(message.toRegex(), audioAbsPath, imageAbsPath))
    }

    println(rules)
    val mainContainer = VBox()
    val scene = Scene(mainContainer)
    scene.setFill(Color.color(1.0, 1.0, 1.0, 0.0))
    val imageView = ImageView(File("default.png").toURI().toString())
    val textBox   = TextField("話しかけたい言葉を入れてEnterを押してね")

    mainContainer.getChildren()?.add(imageView)
    mainContainer.getChildren()?.add(textBox)

    var initialX = 0.0
    var initialY = 0.0

    imageView.setOnMousePressed({(e) ->
      initialX = e?.getX()!!
      initialY = e?.getY()!!
    })

    imageView.setOnMouseDragged({(e) ->
      stage.setX(e?.getScreenX()!! - initialX)
      stage.setY(e?.getScreenY()!! - initialY)
    })

    textBox.setOnKeyPressed(
      {(keyEvent) ->
        if(keyEvent?.getCode() == KeyCode.ENTER){
          val rule = rules.find { (rule) -> rule.pattern.matcher(textBox.getText()!!).matches() }
          if(rule != null){
            textBox.setText("")
            if(rule.image != null) setImage(imageView, rule.image)
            if(rule.audio != null) playAudio(rule.audio)
          }
        }
      }
    )

    stage.setTitle("Mascotty")
    stage.setScene(scene)
    stage.setMinWidth(100.0)
    stage.initStyle(StageStyle.TRANSPARENT)
    stage.show()
  }

  fun setImage(imageView:ImageView, path:String){
    val file = File(path)
    if(!file.canRead()) return
    imageView.setImage(Image(file.toURI().toString()))
  }

  fun playAudio(path:String){
    val file = File(path)
    if(!file.canRead()) return
    if(line != null){
      line?.stop()
    }

    val ais  = AudioSystem.getAudioInputStream(file)
    line = AudioSystem.getClip()!!
    line?.open(ais)
    line?.start()
  }
}