import { _decorator, assetManager, Component, director, game, Label, Prefab, Node, profiler, Sprite } from 'cc';

import { PREVIEW } from 'cc/env';
import { SceneDef } from '../../scripts/SceneDef';
import { tgxSceneUtil } from '../../core_tgx/tgx';

const { ccclass, property } = _decorator;

// ========== config begin =================
//the first scene after preloading completes.

const _loadingText = ['Loading.', 'Loading..', 'Loading...'];

@ccclass('LoadingScene')
export class LoadingScene extends Component {
    @property(Label)
    txtLoading: Label;

    @property(Node)
    loadingBar: Node;
    

    start() {
        // 初始化进度条和文本
        // this.loadingBar.fillRange = 0.5;
        this.loadingBar.setScale(0, 1, 1)
        this.txtLoading.string = 'Loading... 0%';
        this.loadTargetScene();
    }

    private loadTargetScene() {
        let targetScene = SceneDef.Next_Scene;
        console.log("要切换的场景 === ",targetScene);
        let sceneName = typeof targetScene === 'string' ? targetScene : targetScene.name;
        // 预加载目标场景
        director.preloadScene(sceneName, (completedCount, totalCount) => {
            let progress = completedCount / totalCount;
            // this.loadingBar.fillRange = progress;
            this.loadingBar.setScale(progress, 1, 1);
            this.txtLoading.string = `Loading... ${Math.floor(progress * 100)}%`;
        }, async () => {
            // 预加载完成后，切换到目标场景
            if(typeof targetScene === 'string'){
                director.loadScene(targetScene);
            }else{
                await tgxSceneUtil.loadScene(targetScene)
            }
        });
    }
}