import * as THREE from '/app/thirdparty/Three/three.module.js'
import { OrbitControls } from '/app/thirdparty/Three/OrbitControls.module.js'
import * as TWEEN from '/app/thirdparty/Three/tween.module.js'

export class kfArena{
    
    constructor(canvasEl, agentSprites){
        Object.assign(this, app.helpers.helpers3D)
        this.agentSprites = app.Assets.Store.json.agentSprites
        this.canvasEl = canvasEl
        this.agentSprites = agentSprites
        this.renderer = null
        this.mode = '3D'
        this.sceneSize = app.Assets.Store.json.arenaConfig.arenaSize
        this.initScene()
        this.raycaster = new THREE.Raycaster()
        this.agents = {}
        this.onclickAgent = null
    }
    
    initScene(){
        // Scene
        this.scene = new THREE.Scene()
        
        // Camera
        this.camera = new THREE.PerspectiveCamera(75, this.canvasEl.clientWidth / this.canvasEl.clientHeight, 0.1, 1000)
        this.camera.position.set(3, 3, 5)
        this.camera.lookAt(0, 0, 0)
        this.camera.layers.enable(1)
        this.camera.layers.enable(2)
        
        // Lights
        const light = new THREE.DirectionalLight(0xffffff, 1)
        light.position.set(5, 5, 5)
        light.intensity = 2
        this.scene.add(light)
        this.scene.add(new THREE.AmbientLight(0xffffff, 0.4))
        
        this.grid = new THREE.GridHelper(this.sceneSize.x, this.sceneSize.x, 0x8888AA, 0x8888AA)
        this.grid.layers.set(1)
        this.scene.add(this.grid)        
        
        // Base plane
        const planeGeo = new THREE.PlaneGeometry(100, 100)
        const planeMat = new THREE.MeshBasicMaterial({
            color: 0xaaaacc,
            opacity: 0.3,
            transparent: true, // needed for opacity < 1 to take effect
            side: THREE.DoubleSide
        })
        this.basePlane = new THREE.Mesh(planeGeo, planeMat)
        this.basePlane.rotation.x = -Math.PI / 2 // lay it flat (like the grid)
        this.basePlane.position.y=-0.01 // to avoid artefacts on objets bases
        this.scene.add(this.basePlane)        
        
        this.axes = new THREE.AxesHelper(this.sceneSize.x/2)
        this.axes.layers.set(2)
        this.scene.add(this.axes)        
        
        this.renderer = new THREE.WebGLRenderer({ antialias: true, canvas: this.canvasEl })
        this.init3DHighlighter({
                edgeStrength: 3,
                visibleEdgeColor: 0xffff00,
                edgeGlow: 1,
                edgeThickness: 4,
                pulsePeriod: 2,
        })
        this.canvasEl.addEventListener('click', this.onSceneClick.bind(this))
    }
    
    startRendering(){
        this.addControls()       
        this.render()
    }
    
    render() {
        TWEEN.update()
        this.resizeRendererToDisplaySize()
        if(this.composer) this.composer.render()
        else this.renderer.render(this.scene, this.camera)
        requestAnimationFrame(this.render.bind(this))
    }
    
    
    resizeRendererToDisplaySize() {
        const width = this.canvasEl.clientWidth
        const height = this.canvasEl.clientHeight
        if (this.canvasEl.width !== width || this.canvasEl.height !== height) {
            this.renderer.setSize(width, height, false)
            return true
        }
        return false
    }
    
    addControls(){
        this.controls = new OrbitControls(this.camera, this.canvasEl)
        if(this.mode=='2D'){
            this.controls.maxPolarAngle = 0 // Math.PI / 2
            this.controls.minPolarAngle = 0 // Math.PI / 2
        } else if(this.mode=='3D'){
        }
        
        this.controls.mouseButtons = {
            LEFT: THREE.MOUSE.ROTATE,     // keep orbit on left
            MIDDLE: THREE.MOUSE.PAN,      // pan with middle-click
            RIGHT: THREE.MOUSE.DOLLY      // zoom with right-click
        }
    }
        
    
    onSceneClick(event){ // ray from the mouse, through the camera lens, to find the first (most foreground) object
        if(typeof(this.onclickAgent) != 'function') return
        const normalizedPointer = new THREE.Vector2()
        const rect = this.canvasEl.getBoundingClientRect()       
        normalizedPointer.x = ((event.clientX - rect.left) / rect.width) * 2 - 1
        normalizedPointer.y = -((event.clientY - rect.top) / rect.height) * 2 + 1
        this.raycaster.setFromCamera(normalizedPointer, this.camera)
        const intersects = this.raycaster.intersectObjects(this.scene.children, true)

        if (intersects.length > 0) {
            const hit = this.getNamedParent(intersects[0].object)
            if(hit) this.onclickAgent(hit)
        } 
    }
    
    
    addAgent(typeId, aid, properties, values){ 
        const agentSprite = this.agentSprites.find(item => item.atp_id==typeId)
        if(!agentSprite) return
        const agentObj = this.agentFromJSON(aid, agentSprite.asp_3d)

        agentObj.position.set(values.position.x, values.position.z, values.position.y )
        //TODO Speed vector
        this.scene.add(agentObj)
        
        this.agents[aid] = {
            type: typeId,
            props: properties,
            values: values,
        }
    }
    
    removeAgent(aid){ 
        const obj3d = scene.getObjectByName(aid)
        this.scene.remove(obj3d)
        if(aid in this.agents) delete(this.agents[aid])
    }
    
    // getAllAgents(){
    //     const agents = []
    //     scene.traverse(o => o.name && names.push(o.name))
}


// Make this module available to common JS
if(!app.LoadedModules) app.LoadedModules = {}
app.LoadedModules.kfArena = kfArena