import * as THREE from 'three'
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'

const global = (0,eval)("this")
const scene = new THREE.Scene()
const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000)
const raycaster = new THREE.Raycaster()
const renderer = new THREE.WebGLRenderer()
const entities = {}
renderer.setSize(window.innerWidth, window.innerHeight)
renderer.setAnimationLoop(animate)

const geometry = new THREE.PlaneGeometry(1000, 1000)
const material = new THREE.MeshBasicMaterial({ color: 0x115011 })
const ground = new THREE.Mesh(geometry, material)
scene.add(ground)

// const loader = new GLTFLoader()
// loader.load('player.gltf', (gltf) => scene.add(gltf.scene), undefined, (err) => console.log(err))

global.camera = camera
global.scene = scene
camera.position.set(0, -250, 500)
camera.rotation.set((30 / 180) * Math.PI, 0, 0)
// camera.lookAt(0, 0, 0)

function animate() {
	renderer.render(scene, camera)
}

var websocket = null
global.websocket = null
var timerId = null

function connectWebSocket() {
  websocket = new WebSocket('ws://127.0.0.1:1280/ws')
  global.websocket = websocket
  websocket.onerror = () => websocket.close()
  websocket.onopen = () => {
    document.getElementById('connection').innerHTML = 'open'
    clearInterval(timerId)
  }
  websocket.onclose = () => {
    websocket = null
    document.getElementById('connection').innerHTML = 'closed'
    timerId = setInterval(() => {
      if (websocket == null) {
        connectWebSocket()
      }
    }, 2000)
  }

  websocket.onmessage = (event) => {
    let state = JSON.parse(event.data)
    for (const e of state.entities) {
      let entity
      if (e.id in entities) {
        entity = entities[e.id]
      }
      else {
        entity = new THREE.Mesh(new THREE.SphereGeometry(e.radius), new THREE.MeshBasicMaterial({ color: 0xffffff, wireframe: true }))
        entity.userData.type = 'entity'
        entity.userData.id = e.id
        scene.add(entity)
        entities[e.id] = entity
      }

      entity.position.set(e.pos.x, e.pos.y, e.radius)
    }

    document.getElementById('state').innerHTML = JSON.stringify(state, null, 2)
  }
}

window.addEventListener('load', () => {
  connectWebSocket()

  const canvas = renderer.domElement
  canvas.addEventListener('mousedown', (event) => {
    raycaster.setFromCamera(new THREE.Vector2((event.clientX / canvas.clientWidth) * 2 - 1, (event.clientY / canvas.clientHeight) * -2 + 1), camera)
    const intersect = raycaster.intersectObject(ground).at(0)
    if (event.button == 0) {
      const x = Math.round(intersect.point.x)
      const y = Math.round(intersect.point.y)
      websocket.send(JSON.stringify({ action: 'move', id: '1', x, y }))
    }
  })

  document.addEventListener('wheel', (event) => {
    if (event.deltaY < 0) {
      camera.zoom += 0.2
      if (camera.zoom > 3) {
        camera.zoom = 3
      }
      camera.updateProjectionMatrix()
    }
    if (event.deltaY > 0) {
      camera.zoom -= 0.2
      if (camera.zoom < 1) {
        camera.zoom = 1
      }
      camera.updateProjectionMatrix()
    }
  })

  document.body.appendChild(canvas)
})