/*
 * Copyright © HatioLab Inc. All rights reserved.
 */

import { Component, Shape, sceneComponent } from '@hatiolab/things-scene'
import MCSMachine from './mcs-machine'

const NATURE = {
  mutable: false,
  resizable: false,
  rotatable: false,
  properties: [
    {
      type: 'string',
      name: 'NodeMachine',
      label: 'node-machine'
    },
    {
      type: 'nodes',
      label: 'nodes',
      name: 'alias'
    }
  ]
}

@sceneComponent('Node')
export default class Node extends Shape {
  static RADIUS = 8

  is3dish() {
    return true
  }

  isDescendible() {
    return false
  }

  render(context) {
    const { cx, cy } = this.state

    context.beginPath()

    context.ellipse(cx, cy, Math.abs(Node.RADIUS) * 1, Math.abs(Node.RADIUS) * 1, 0, 0, 2 * Math.PI)

    context.closePath()
  }

  get path() {
    var { cx, cy } = this.state

    return [
      {
        x: cx - Node.RADIUS * 1,
        y: cy - Node.RADIUS * 1
      },
      {
        x: cx + Node.RADIUS * 1,
        y: cy - Node.RADIUS * 1
      },
      {
        x: cx + Node.RADIUS * 1,
        y: cy + Node.RADIUS * 1
      },
      {
        x: cx - Node.RADIUS * 1,
        y: cy + Node.RADIUS * 1
      }
    ]
  }

  set path(path) {
    var left_top = path[0]
    var right_bottom = path[2]

    this.set({
      cx: left_top.x + (right_bottom.x - left_top.x) / 2,
      cy: left_top.y + (right_bottom.y - left_top.y) / 2
    })
  }

  get nodeMachine() {
    if (this.state.NodeMachine) {
      return this.state.NodeMachine
    }

    const parent = this.parent

    if (parent && parent instanceof MCSMachine) {
      return parent.state.id
    }
  }

  contains(x, y) {
    var { cx, cy } = this.state

    var normx = (x - cx) / (Node.RADIUS * 2)
    var normy = (y - cy) / (Node.RADIUS * 2)

    return normx * normx + normy * normy < 0.25
  }

  outline(progress) {
    var { cx, cy } = this.state

    return this.transcoordS2T(cx, cy)
  }

  get nature() {
    return NATURE
  }
}

Component.memoize(Node.prototype, 'path', false)