const DWTool = require("./DWTool");
var Promise = require('../lib/es6-promise').Promise;

class PrefabManager {
    static getPrefabByPath(path, res) {

        let filePath = `prefabs/precedence/${path}`;
        let uuid = cc.loader._getResUuid(filePath, cc.Prefab, true);
        let result = res.filter((item) => {
            return item._uuid === uuid
        });
        if (result != null && result.length != undefined) {
            let prefab = result[0];
            if (prefab) {
                return new cc.instantiate(prefab);
            } else {
                return null;
            }
        }
        return null;
    }

    //prefab预制资源
    static loadPrefab(name) {
        if (GameGlobal.prefabsRes) {
            // let prefab = this.getPrefabByPath(name,GameGlobal.prefabsRes);
            // sprite.spriteFrame = prefab;
            let p = new Promise((resolve, reject) => {
                let prefab = this.getPrefabByPath(name,GameGlobal.prefabsRes);
                if (prefab) {
                    resolve(prefab)
                } else {
                    DWTool.loadResPrefab(`./prefabs/precedence/${name}`)
                        .then((result) => {
                        let alert = cc.instantiate(result);
                        resolve(alert);
                    });
                }
            });
            return p;
        } else {
            let p = new Promise((resolve, reject) => {
                DWTool.loadResPrefab(`./prefabs/precedence/${name}`)
                .then((result) => {
                    let alert = cc.instantiate(result);
                    resolve(alert);
                });
            })
            return p;
        }
    }
}

module.exports = PrefabManager;