import {Color3, Engine, FreeCamera, Scene, Vector3, WebGPUEngine} from "@babylonjs/core";
import '@babylonjs/loaders';
import {DiagramManager} from "./diagram/diagramManager";
import log, {Logger} from "loglevel";
import {GamepadManager} from "./controllers/gamepadManager";
import {CustomEnvironment} from "./util/customEnvironment";
import {Spinner} from "./objects/spinner";
import {PouchdbPersistenceManager} from "./integration/pouchdbPersistenceManager";
import {addSceneInspector} from "./util/functions/sceneInspector";
import {groundMeshObserver} from "./util/functions/groundMeshObserver";
import {buildQuestLink} from "./util/functions/buildQuestLink";
import {exportGltf} from "./util/functions/exportGltf";
import {DefaultScene} from "./defaultScene";
import {Introduction} from "./tutorial/introduction";

const webGpu = false;

log.setLevel('debug', false);
const canvas = (document.querySelector('#gameCanvas') as HTMLCanvasElement);
export class VrApp {


    //preTasks = [havokModule];
    private logger: Logger = log.getLogger('App');

    constructor() {
        this.initializeEngine().then(() => {
            this.logger.info('Engine initialized');
        });
    }

    private async initializeEngine() {
        let engine: WebGPUEngine | Engine = null;
        if (webGpu) {
            engine = new WebGPUEngine(canvas);
            await (engine as WebGPUEngine).initAsync();
        } else {
            engine = new Engine(canvas, true);
        }
        engine.setHardwareScalingLevel(1 / window.devicePixelRatio);
        window.onresize = () => {
            engine.resize();
        }
        const scene = new Scene(engine);
        DefaultScene.Scene = scene;
        scene.ambientColor = new Color3(.1, .1, .1);
        //log.resetLevel();
        //log.setDefaultLevel('error');
        await this.initialize(scene);
        engine.runRenderLoop(() => {
            scene.render();
        });
    }
    public async initialize(scene: Scene) {
        setMainCamera(scene);
        const spinner = new Spinner();
        spinner.show();
        const diagramManager = new DiagramManager();
        await initDb(diagramManager);
        initEnvironment(diagramManager, spinner);
        const gamepadManager = new GamepadManager(scene);
        addSceneInspector();
        const el = document.querySelector('#download');
        if (el) {
            el.addEventListener('click', () => {
                exportGltf();
            })
        }
        if (!localStorage.getItem('tutorialCompleted')) {
            this.logger.info('Starting tutorial');
            const intro = new Introduction();
        }
        this.logger.info('Render loop started');
    }


}
const vrApp = new VrApp();
buildQuestLink();

function setMainCamera(scene: Scene) {
    const CAMERA_NAME = 'Main Camera';
    const camera: FreeCamera = new FreeCamera(CAMERA_NAME,
        new Vector3(0, 1.6, 0), scene);
    scene.setActiveCameraByName(CAMERA_NAME);
}

async function initDb(diagramManager: DiagramManager) {
    const db = new PouchdbPersistenceManager();
    db.setDiagramManager(diagramManager);
    await db.initialize();

}

function initEnvironment(diagramManager: DiagramManager, spinner: Spinner) {
    const environment = new CustomEnvironment("default", diagramManager.config);
    environment.groundMeshObservable.add((ground) => {
        groundMeshObserver(ground, diagramManager, spinner).then(() => {

        });
    }, -1, false, this);
}