import GameLogic from "../gameLogic/gameLogic";
import bundleManager from "./bundleManager";


class levelManager {

    private _levelPrefab: cc.Node = null;
    private _curOpenID: number;

    remove() {
        if (this._levelPrefab) {
            // this._levelPrefab.destroy();
            // this._levelPrefab = null
            this._levelPrefab.active = false;
        }
    }

    open(id: number, callback?: Function, new_ = false) {
        console.log('zh:LM.ts  open 1'  )
        if (this._levelPrefab && this._curOpenID == id && !new_) {
            this._levelPrefab.active = true;
            callback && callback();
            return;
        }
        let self = this;
        self.saveCurOpenID(id);
        console.log('zh:LM.ts  open 2'  )
        let bundleName = this.getBundleNameByLevel(id);
        setTimeout(() => {
            console.log('zh:LM.ts  open 3,level=',id,bundleName )
            bundleManager.getBundleByName(bundleName).load('level' + id, cc.Prefab, function (err, prefab: cc.Prefab) {
                if (prefab) {
                    let node = cc.instantiate(prefab);
                    var cavans = cc.director.getScene().getChildByName('world')
                    node.parent = cavans;
                    // node.zIndex = 200
                    // self.remove();
                    self._levelPrefab && self._levelPrefab.destroy();
                    self._levelPrefab = node;
                    cavans.getComponent(GameLogic).init(node,new_);
                    if (callback) {
                        callback(node);
                    }
                }
            })
        }, 50);
    }

    private getBundleNameByLevel(level) {
        if (level <= 2) {
            return 'levels'
        } else {
            return 'level' + level;
        }
    }

    preLoadLevel(level: number) {
        console.log('zh:预加载关卡 level=' + level);
        bundleManager.getBundleByName('levels').preload('level' + level, cc.Prefab, () => {
            console.log('预加载关卡' + level + '完成');
        });
    }

    /**
     * 保存当前打开的关卡ID
     * @param id 关卡ID
     */
    saveCurOpenID(id: number) {
        this._curOpenID = id;
    }

    /**
     * 
     * @returns 获取当前打开的关卡ID
     */
    getCurOpenId() {
        return this._curOpenID;
    }
}

export default new levelManager();