import CharactorManager from "./CharactorManager.js";
import common from "./utils/common.js";
import houseShader from "./shaders/houseShader.js";
import settings from "./utils/settings.js";
import CameraController from "./CameraController.js";

export default class App {

    constructor(engine) {
        
        this.engine = engine
        var scene = new BABYLON.Scene(engine);
        this.scene = scene
        scene.collisionsEnabled = true;

        // Lights
        var light = new BABYLON.HemisphericLight("light1", new BABYLON.Vector3(0, -1, 0), scene);
        light.intensity = 1.0;
        light.specular = BABYLON.Color3.Black();
    
        var light2 = new BABYLON.HemisphericLight("dir01", new BABYLON.Vector3(0, 1, 0), scene);
        light2.intensity = 0.1;
        light2.position = new BABYLON.Vector3(0, 5, 5);
    
        // Skybox
        var skybox = BABYLON.MeshBuilder.CreateBox("skyBox", { size: 1000.0 }, scene);
        var skyboxMaterial = new BABYLON.StandardMaterial("skyBox", scene);
        skyboxMaterial.backFaceCulling = false;
        skyboxMaterial.reflectionTexture = new BABYLON.CubeTexture("textures/environment.env", scene);
        skyboxMaterial.reflectionTexture.coordinatesMode = BABYLON.Texture.SKYBOX_MODE;
        skyboxMaterial.diffuseColor = new BABYLON.Color3(0, 0, 0);
        skyboxMaterial.specularColor = new BABYLON.Color3(0, 0, 0);
        skybox.material = skyboxMaterial;

        this.hasVideoTexture = true

        this.init()
        this.bindEvents()
        setTimeout(() => this.bindSocketEvents(), 1000)

        // document.getElementById("enterBtn").onclick = () => {
        //     document.getElementById("houseTexture").play();
        //     document.getElementById("houseTextureReverse").play();
        //     document.getElementById("mask").style.zIndex = "-10000"
        // }
    }

    init() {

        // document.getElementById("houseTexture").onplay = () => {
        //     console.error("video play!")
        // }
        // window.ty =()=>{
        //     document.getElementById("houseTexture").play();
        // }

        this.initVideo = true
        this.isReverse = false

        let self = this
        BABYLON.SceneLoader.ImportMesh("", "../scenes/house/", "close_to_bottom_L.glb", this.scene, async function (newMeshes, particleSystems, skeletons, animationGroups) {
            
            self.house = newMeshes
            // self.house[0].position = new BABYLON.Vector3(0, 0, -0.5)

            let houseVideo = document.getElementById("houseTexture")

            newMeshes.forEach(m => {
                // m.scaling.scaleInPlace(100);
                m._geometry && (m.checkCollisions = true)

                if(m.material) 
                {
                    BABYLON.Effect.ShadersStore['aFragmentShader'] = houseShader.fragment;
                    BABYLON.Effect.ShadersStore['aVertexShader'] = houseShader.vertex;
                
                    let shaderMaterial = new BABYLON.ShaderMaterial("shader", self.scene, { vertex: "a", fragment: "a", }, {
                        attributes: houseShader.attributes,
                        uniforms: houseShader.uniforms,
                        defines: houseShader.defines
                    });
                    
                    let videoTexture = new BABYLON.VideoTexture("", houseVideo, self.scene)
                    // document.getElementById("houseTexture0").play()
                    // document.getElementById("houseTexture0").loop = "loop"

                    shaderMaterial.setTexture("texture_video", videoTexture)
                    shaderMaterial.setVector3("focal_width_height", new BABYLON.Vector3(
                        864 * window.innerWidth / settings.video.width, // 1500
                        settings.video.width * window.innerHeight / settings.video.height, 
                        window.innerHeight
                        // 864 * window.innerHeight / settings.video.width, // 1500
                        // settings.video.width * window.innerWidth / settings.video.height, 
                        // window.innerWidth
                    ))
                    shaderMaterial.setFloat("isYUV", 0)

                    if(self.hasVideoTexture) m.material = shaderMaterial
                }
            });

            self.charactorManager = new CharactorManager(self)
            await self.charactorManager.readPointData()
            
            setTimeout(() => {
                        
                window.connection.socket.emit("getRotateVideoUrl", {
                    videoPath: "0/0",
                    sceneCode: settings.sceneCode,
                    roomId: settings.roomId,
                    userId: settings.userId,
                });
                window.connection.socket.emit("getRotateVideoUrl", {
                    videoPath: "0/0_rotate" ,
                    sceneCode: settings.sceneCode,
                    roomId: settings.roomId,
                    userId: settings.userId,
                });

                self.charactorManager.importCharactorModel("../scenes/charactors/", "man_YXL.glb")
        
            }, 1500)
        });

        this.cameraController = new CameraController(self)
    }

    bindEvents() {
        
        // let ray = new BABYLON.Ray(new BABYLON.Vector3(0,0,0), new BABYLON.Vector3(0,0,1), 50);

        // document.getElementById("renderCanvas").addEventListener("click", (pointerInfo) => {
        //     if(this.mouseMoving) return
        //     // console.error("click")
        //     let pickPoint = this.screenToWorld({x: pointerInfo.x, y: pointerInfo.y})
        //     ray.origin = pickPoint
        //     ray.direction = BABYLON.Vector3.Normalize( this.cameraController.camera.position.clone().subtract(pickPoint) )
        //     let pickInfo = ray.intersectsMeshes(this.house)[0];
        //     if(pickInfo.hit && this.house.indexOf(pickInfo.pickedMesh)) {
        //         this.charactorManager.clickHouse()
        //     }
        // })

        // document.getElementById("renderCanvas").addEventListener("pointerdown", (pointerInfo) => {
        //     console.error("down")
        //     this.cameraController.startMouseRotate({event: pointerInfo})
        //     this.mouseMoving = false
        // })

        // document.getElementById("renderCanvas").addEventListener("pointerup", (pointerInfo) => {
        //     this.cameraController.endMouseRotate()
        //     // console.error("up")
        // })

        // document.getElementById("renderCanvas").addEventListener("pointermove", (pointerInfo) => {
        //     if(this.cameraController.lastFramePoint) {
        //         // console.error("move")
        //         this.cameraController.mouseRotating({event: pointerInfo})
        //         this.mouseMoving = true
        //     }
        // })

        this.scene.onPointerObservable.add((pointerInfo) => {

            switch (pointerInfo.type) {
                case BABYLON.PointerEventTypes.POINTERDOWN:
                    this.cameraController.startMouseRotate(pointerInfo)
                    break;

                case BABYLON.PointerEventTypes.POINTERUP:
                    this.cameraController.endMouseRotate()
                    break;

                case BABYLON.PointerEventTypes.POINTERMOVE:
                    if(this.cameraController.lastFramePoint) 
                        this.cameraController.mouseRotating(pointerInfo)
                    break;

                case BABYLON.PointerEventTypes.POINTERWHEEL:
                    break;

                case BABYLON.PointerEventTypes.POINTERPICK:
                    break;

                case BABYLON.PointerEventTypes.POINTERTAP:
                    if(pointerInfo.pickInfo.hit && this.house.indexOf(pointerInfo.pickInfo.pickedMesh)) {
                        this.charactorManager.clickHouse()
                    }
                    break;

                case BABYLON.PointerEventTypes.POINTERDOUBLETAP:
                    break;
            }

        });

        this.scene.onBeforeAnimationsObservable.add(() => {

            if(this.charactorManager && this.charactorManager.charactor)
                this.charactorManager.onBeforeAnimation()

        })

        this.scene.onBeforeRenderObservable.add(() => {

            this.cameraController.updateCameraPos()

        })
    }

    bindSocketEvents() {

        let walkPointsTemp = []

        // 获得旋转视频
        window.connection.socket.on('getRotateVideoUrl', async(data) => {    
            console.log("[3D] getRotateVideoUrl: ", data)
            const url = data
                            
            let video = data.indexOf("_rotate") > -1 
                ? document.getElementById("houseTextureReverse") 
                : document.getElementById("houseTexture")

            video.src = url

            // 页面刷新后初次加载视频
            if(this.initVideo) {
                // this.updateHouseVideo(video, true)
                this.initVideo = false
                this.cameraController.camera.minZ = 0.001
            }
        })

        // 获得行走视频
        window.connection.socket.on('getVideoUrl', async(data) => {    
            console.log("[3D] getVideoUrl: ", data)
            const urlArr = data

            let path = walkPointsTemp.map((point, i) => { 
                return { 
                    id: point.id,
                    point: new BABYLON.Vector3(-point.location.x, 0, point.location.z), 
                    video: urlArr[i] ? common.createVideoElement0(urlArr[i]) : null,
                } 
            })

            // 行走时锁定camera
            console.log("Walk Start: ", path)
            this.cameraController.lockCamera(true)
            this.charactorManager.charactor.startWalk(path, this.charactorManager)
        })
        
        // 获得行走路径
        window.connection.socket.on("getRoute", (data) => {

            console.log("[3D] getRoute", data);

            if(!data || data.length < 2) return

            walkPointsTemp = data
 
            let dir = this.charactorManager.getVideoDirecNum()
            let videoNames = []
            for(let i = 0; i < data.length-1; i++) {
                videoNames.push(data[i].id + "/" + data[i].id + "_" + data[i+1].id + "_" + dir)
            }

            this.getSocketVideoType = "walkPath"
            let sendData = {
                videoList: videoNames,
                sceneCode: settings.sceneCode,
                roomId: settings.roomId,
                userId: settings.userId,
            }
            console.log("[3D] send(getVideoUrl): ", sendData);
            connection.socket.emit("getVideoUrl", sendData);
        });
    }

    updateHouseVideo(video, notPlay) {
        let videoTexture = new BABYLON.VideoTexture("", video, this.scene)
        this.hasVideoTexture && this.house.forEach(mesh => {
            mesh.material && mesh.material.setTexture("texture_video", videoTexture)
        })
        !notPlay && video.play()
    }

    async updateHouseVideoBlob(blobUrl, notPlay) {
        let video = await common.createVideoElement(blobUrl)
        // video.loop = "loop"
        let videoTexture = new BABYLON.VideoTexture("", video, this.scene)
        this.hasVideoTexture && this.house.forEach(mesh => {
            mesh.material && mesh.material.setTexture("texture_video", videoTexture)
        })
        !notPlay && video.play()
    }

    screenToWorld(point) {
        let camera = this.cameraController.camera
        const viewport = camera.viewport.toGlobal(this.engine.getRenderWidth(), this.engine.getRenderHeight());
        return BABYLON.Vector3.Unproject(new BABYLON.Vector3(point.x, point.y, 0), viewport.width, viewport.height, 
            BABYLON.Matrix.Identity(), camera.getViewMatrix(), camera.getProjectionMatrix());
    }
    
    worldToSceen(point) {
        let camera = this.cameraController.camera
        const viewPort = camera.viewport.toGlobal(this.engine.getRenderWidth(), this.engine.getRenderHeight());
        return BABYLON.Vector3.Project(point, BABYLON.Matrix.Identity(), this.scene.getTransformMatrix(), viewPort);
    }
}