import { Component, Scene, _decorator, director, sys,Node } from "cc";
import FileEnditor from "./Enditor/FileEnditor";
import FileBase from "./FileBase";
import FileJSB from "./JSB/FileJSB";
import FileWeb from "./web/FileWeb";
import { EDITOR, JSB } from "cc/env";

const { ccclass, property, playOnFocus, executeInEditMode ,executionOrder} = _decorator;

@ccclass
// @executeInEditMode
// @playOnFocus
// @executionOrder(-1)//必须优先执行 此脚本 否者其他脚本在onLoad中 调用单列会进行多次节点创建
export default class FileManager{
    private static _instance: FileManager;
    // protected onLoad(): void {
    //     FileManager._instance = this;
    //     FileManager._instance.Init();
    // }
    public static ins(): FileManager {
        if (!this._instance) {
            this._instance = new FileManager();//  this.CreateFileManagerNode();
            this._instance.Init();
        }
        return this._instance;
    }
    
    public static insFile(): FileBase {
        return this.ins().mFileTools;
    }

    // static CreateFileManagerNode(): FileManager {
    //     let tNode: Node = null;
    //     var scene:Scene = director.getScene();
    //     if (EDITOR) {
    //         tNode = new Node("FileManager");
    //         scene.addChild(tNode);
    //     } else if (sys.isBrowser) {
    //         tNode = new Node("FileManager");
    //         scene.addChild(tNode);
    //     } else if (JSB) {
    //         tNode = new Node("FileManager");
    //         scene.addChild(tNode);
    //     }
    //     return tNode.addComponent(FileManager);
    // }

    mFileTools:FileBase;
    private Init() {
        if(EDITOR){
            this.mFileTools = new FileEnditor();
        }else if(sys.isBrowser){
            this.mFileTools = new FileWeb();
        }else if(JSB){
            this.mFileTools = new FileJSB();
        }
        this.mFileTools.onLoad();
    }
}