/**
 * 数据模型基类
 *
 * @author CaiAoLin
 * @date 2017/6/22
 * @version
 */
import MongooseHelper from "../helper/mongoose_helper";

class BaseModel {

    /**
     * mongoose数据模型
     *
     * @var {object}
     */
    model = null;

    /**
     * 构造函数
     *
     * @return {void}
     */
    constructor() {
        if (new.target === BaseModel) {
            throw new Error('BaseModel不能实例化,只能继承使用。');
        }
    }

    /**
     * 初始化函数
     *
     * @return {void}
     */
    init() {
        if (this.model === null) {
            throw new Error('子类数据有误');
        }

        this.db = new MongooseHelper();
        this.db.model = this.model;
    }

    /**
     * 根据id查找对应数据
     *
     * @param {string} id
     * @return {Promise}
     */
    async findDataById(id) {
        if (id === '' || id === undefined) {
            return null;
        }
        let data = await this.db.findOne({_id: id});
        console.log(data);
    }

}

export default BaseModel;