import { InteractiveObject } from '@/components/InteractiveObjects/InteractiveObject';
import { GameEngine } from '@/lib/GameEngine';
import { Hero } from '@/lib/Hero';
let gameEngine = null;

export default {

    async mounted(){
        gameEngine = new GameEngine();
        //this.gameEngine = gameEngine;
        await gameEngine.init(this.$refs.target, { 
            xr: true, 
            gizmo: this.env == 'GameDesigner', 
            designMode: this.env == 'GameDesigner', 
            depthSense: this.env == 'GameDesigner' ? false : this.store.prefs.xr.depthSense
        });
        //gameEngine.scene.add(new gameEngine.$.GridHelper(100,100));
        if (this.env == 'GameDesigner'){
            gameEngine.scene.add(gameEngine.transformControls.getHelper());
        }else{
            gameEngine.dashboard.enable();
        }
        this.resize();
        //gameEngine.setCamera(gameEngine.orthographicCamera)
        //gameEngine.setCameraOrthographic();
        await this.loadScenario();
        window.addEventListener('resize', this.resize);
    },

    unmounted(){
        window.removeEventListener('resize', this.resize);
        gameEngine.stop();
    },

    computed:{
        scenes(){
            return this.scenario?.scenes || [];
        },
        scene(){
            return this.scenesList[0];
        },
        currentObject(){
            return this.objectsList[0];
        },
        sceneObjects(){
            return this.object.scenes?.[this.scene?.data?.id]?.objects;
        },
        object(){
            return this.modelValue;
        },
        objectAnimations(){
            return this.currentObject?.__g?.animations?.map(a => ({
                name: a.name, id: a.uuid, a
            }));
        }
    },

    watch:{
        async scene(n){
            this.object.scenes = this.object.scenes || {}
            this.object.scenes[n.data.id] = this.object.scenes[n.data.id] || {}
            await this.loadEnvironment(n, this.object.scenes[n.data.id]);
        },
        mode(n){
            gameEngine.transformControls.setMode(n)
        },
        async 'object.scenario'(n){
            await this.loadScenario()
        },
        currentObject(n){
            if (this.env == 'GameDesigner'){
                gameEngine.transformControls.attach(n.__o);
                gameEngine.gizmo.target = n.__o.position;
                gameEngine.camera.updateProjectionMatrix()
            }
        },
        renderType(v){
            gameEngine.renderType = v;
        },
        cameraType(v){
            if (v == 'perspective'){
                gameEngine.setCameraPerspective();
            }else{
                gameEngine.setCameraOrthographic();
            }
        }
    },

    methods:{
        async loadScenario(){
            if (this.object.scenario){
                this.scenario = (await this.$api.scenario.load(this.object.scenario)).data;
            }else{
                this.scenario = null;
            }
        },

        async expandScenarioData(scene){
            const promises = [];
            ['environment', 'scene'].filter(e=>scene.data[e]).forEach(e=>{
                promises.push(this.$api.gameObject.load(scene.data[e]).then(r=>scene.data['$'+e] = r.data))
            })
            
            for (let i of scene.data.items || []) {
                if (i.data.io){
                    if (i.data.io.go){
                        promises.push(this.$api.gameObject.load(i.data.io.go).then(r=>i.data.io.$go = r.data));
                    }
                }else{
                    promises.push(this.$api.gameObject.load(i.data.go).then(r=>i.data.$go = r.data));
                }
            }
            await Promise.all(promises);
        },

        /**
         * loads all environment objects
         * @param scene Scene object from the Scenario Module
         * @param target Target scene definition from Game Module
         */
        async loadEnvironment(scene, target){
            //await gameEngine.loadPanorama(`/asset/default/43.webp`);
            gameEngine.activeObjects.clear();
            await this.expandScenarioData(scene);
            target.objects = target.objects || {};
            let l = target.objects;
            if (this.scene.data.$environment){
                await gameEngine.loadPanorama(`/asset/default/${this.scene.data.$environment.asset.name}`);
            }
            if (this.scene.data.$scene){
                let env = await gameEngine.load(`/asset/default/${this.scene.data.$scene.asset.name}`);
                this.setObjectAttributes(l, this.scene.data, env, 100);
                gameEngine.activeObjects.add(env.scene);
            }
            for (let i of this.scene.data.items || []) {
                let io = new InteractiveObject(i.data, gameEngine)
                await io.ready;

                //let gltf = await gameEngine.load(`/asset/default/${i.data.$go.asset.name}`);
                let objKey = (i.data.type == 'GenericObject' || !i.data.type) ? 'scene' : 'object'
                console.log(i.data, io.object)
                this.setObjectAttributes(l, i.data, io.object, 1, objKey);
                gameEngine.activeObjects.add(io.object[objKey]);
                if (this.env == 'GamePlaying'){
                    if (i.data.$go.type == 'player3d'){
                        let hero = new Hero(io.object, i.data.$go);
                        hero.init(gameEngine);
                    }else{
                        if (io.object.animations?.length){
                            gameEngine.playAnimation(gameEngine.scene, io.object.animations[0]);
                        }
                    }
                }
            }
            // let camera = new gameEngine.$.PerspectiveCamera();
            // let cameraHelper = new gameEngine.$.CameraHelper(camera);
            // gameEngine.activeObjects.add(cameraHelper);
            // gameEngine.activeObjects.add(camera);
            // this.setObjectAttributes(l, { id: 'camera', 'title': 'Main camera' }, { scene: camera })
            // cameraHelper.update();

            //this is needed cause when mounted canvas has different size
            this.resize();
        },
        
        targetPointerDown(){
            this.pointerDownTime = performance.now();
        },
        targetClick(e){
            if (this.env == 'GameDesigner'){
                if (performance.now() - this.pointerDownTime < 200){
                    let intersects = gameEngine.intersect(e, this.$refs.target, gameEngine.activeObjects.children, true);
                    //console.log(intersects)
                    if (intersects.length){
                        //console.log('attaching controls to', intersects[0].object)
                        //gameEngine.transformControls.attach(intersects[0].object);
                        //console.log(this.sceneObjects[intersects[0].object.__pn_id])
                        this.objectsList[0] = this.sceneObjects[intersects[0].object.__pn_id]
                    }else{
                        gameEngine.transformControls.detach();
                    }
                }
            }else{
                gameEngine.onClick(e, this.$refs.target);
            }
        },

        setObjectAttributes(l, data, o, autoScaleFactor = 1, objectKey = 'scene'){
            if (l[data.id]){
                ['position', 'scale', 'rotation'].forEach(p=>{
                    o[objectKey][p].copy(l[data.id][p])
                })
            }else{
                gameEngine.autoScale(o[objectKey], autoScaleFactor);
            }
            l[data.id] = l[data.id] || {};
            ['position', 'scale', 'rotation', 'visible'].forEach(p=>{
                l[data.id][p] = o[objectKey][p];
            })
            l[data.id].__o = o[objectKey];
            l[data.id].__g = o;
            l[data.id].__title = data.title;
            o[objectKey].__pn_id = data.id;
        },

        async toggleAnimation(animation){
            animation.playing = !animation.playing;
            gameEngine.playAnimation(gameEngine.scene, animation.a, animation.playing);
        },
        resize(){
            let r = this.$refs.target;
            gameEngine.resize(r.clientWidth, r.clientHeight);
            //this.zoom = Math.min(r.clientWidth / this.viewBox.w, r.clientHeight / this.viewBox.h);
        },

        control(){
            gameEngine.hero.lockControls();
        }
    }
}