/**
 * 版本管理业务逻辑模型
 *
 * @author CaiAoLin
 * @date 2017/7/28
 * @version
 */
import BaseModel from "../../common/base/base_model";
import VersionSchema from "./schemas/version";

class VersionModel extends BaseModel {

    /**
     * 构造函数
     *
     * @return {void}
     */
    constructor() {
        let parent = super();
        parent.model = VersionSchema;
        parent.init();
    }

    /**
     * 获取版本列表
     *
     * @return {Promise}
     */
    async getVersionList() {
        let versionData = await this.findDataByCondition({name: {$ne: ''}}, null, false);

        return versionData === null ? [] : versionData;
    }

    /**
     * 设置场景
     *
     * @param {string} scene
     * @return {void}
     */
    setScene(scene = '') {
        switch (scene) {
            // 新增
            case 'add':
                this.model.schema.path('name').required(true);
                this.model.schema.path('standard_bill').required(true);
                this.model.schema.path('ration_lib').required(true);
                this.model.schema.path('creator').required(true);
                this.model.schema.path('create_time').required(true);
                break;
        }
    }

    /**
     * 新增版本
     *
     * @param {Object} data
     * @return {Promise}
     */
    async add(data) {
        let result = false;
        if (Object.keys(data).length <= 0) {
            return result;
        }

        this.setScene('add');
        data.create_time = new Date().getTime();
        result = this.db.create(data);
        return result;
    }

    /**
     * 新增标准清单/定额库
     *
     * @param {Object} postData
     * @return {Promise}
     */
    async addLib(postData) {
        if (postData.id === undefined || postData.model === undefined) {
            throw '参数错误';
        }
        let model = postData.model;
        let id = postData.id;
        let standardBillId = postData.standard_bill_id;
        let standardBill = postData.standard_bill;
        let rationLibId = postData.ration_lib_id;
        let rationLib = postData.ration_lib;

        switch (model) {
            case 'bill':
                if (standardBillId === undefined || standardBill === undefined) {
                    throw '参数错误';
                }
                break;
            case 'ration':
                if (rationLibId === undefined || rationLib === undefined) {
                    throw '参数错误';
                }
                break;
        }

        let versionData = await this.findDataByCondition({_id: id});
        if (versionData === null || versionData.standard_bill === undefined) {
            throw '没有找到对应的数据';
        }

        let updateData = {};
        let field = model === 'bill' ? 'standard_bill' : 'ration_lib';
        let tmpData = {
            id: model === 'bill' ? standardBillId : rationLibId,
            name: model === 'bill' ? standardBill : rationLib
        };
        // 判断是否有重复
        if (versionData[field].length > 0) {
            for (let tmp of versionData[field]) {
                if (tmp.id === tmpData.id) {
                    throw '已存在对应数据';
                }
            }
        }
        versionData[field].push(tmpData);
        updateData[field] = versionData[field];

        let result = await this.db.update({_id: id}, updateData);

        return result.ok === undefined ? false : result.ok;
    }

    /**
     * 删除对应的标准清单库/定额库
     *
     * @param {Number} id
     * @param {Number} libId
     * @param {String} model
     * @return {Promise}
     */
    async deleteLib(id, libId, model) {
        let versionData = await this.findDataByCondition({_id: id});
        if (versionData === null || versionData.standard_bill === undefined) {
            throw '没有找到对应的数据';
        }

        let field = model === 'bill' ? 'standard_bill' : 'ration_lib';
        if (versionData[field].length <= 0) {
            throw '没有对应的库数据';
        }

        let own = false;
        for (let index in versionData[field]) {
            if (versionData[field][index].id === libId) {
                versionData[field].splice(index, 1);
                own = true;
                break;
            }
        }

        if (!own) {
            throw '没有对应的库数据';
        }
        let updateData = {};
        updateData[field] = versionData[field];
        let result = await this.db.update({_id: id}, updateData);

        return result.ok === undefined ? false : result.ok;
    }


}

export default VersionModel;