server/app/service/trade/orderDetail.js

'use strict';
const { CrudService } = require('naf-framework-mongoose-free/lib/service');
const { BusinessError, ErrorCode } = require('naf-core').Error;
const _ = require('lodash');
const assert = require('assert');
const { ObjectId } = require('mongoose').Types;
const Transaction = require('mongoose-transactions');
//
class OrderDetailService extends CrudService {
  constructor(ctx) {
    super(ctx, 'orderdetail');
    this.model = this.ctx.model.Trade.OrderDetail;
    this.orderModel = this.ctx.model.Trade.Order;
    this.goodsSpecModel = this.ctx.model.Shop.GoodsSpec;
    this.userCouponModel = this.ctx.model.User.UserCoupon;
    this.goodsRateModel = this.ctx.model.Shop.GoodsRate;
    this.afterSaleModel = this.ctx.model.Trade.AfterSale;
    this.tran = new Transaction();
  }
  async searchOrderTransport({ id }) {
    const orderDetail = await this.model.findById(id);
    if (!id) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到订单信息');
    const { transport = {} } = orderDetail;
    const { shop_transport_no: no, shop_transport_type: type } = transport;
    if (!no || !type) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '缺少快递信息');
    const res = await this.ctx.service.util.kd100.search({ no, type });
    return res;
  }

  /**
   * 创建:用户支付完成后的订单
   * @param {Object} body 请求参数体
   * @param body.order_id 下单的id
   * @param {Transaction} tran 数据库事务实例
   */
  async create({ order_id }, tran) {
    assert(order_id, '缺少支付订单信息');
    const order = await this.orderModel.findById(order_id);
    if (!order) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到支付订单的数据');
    const { customer, address, goods: shopGoods, no, status, buy_time, pay, total_detail: otd } = order;
    if (status === '0') throw new BusinessError(ErrorCode.DATA_INVALID, '订单未支付');
    const orderDetailData = { customer, address, order: order_id, buy_time, pay_time: _.get(pay, 'pay_time'), status };
    const shopMoneyDetail = this.ctx.service.util.order.shopMoneyDetail(order);
    // 分订单计数器
    let noTimes = 1;
    for (const s of shopGoods) {
      const shop = _.get(s, 'shop');
      const remarks = _.get(s, 'remarks');
      const goodsList = _.get(s, 'goods', []);
      const detailNo = `${no}-${noTimes}`;
      const total_detail = shopMoneyDetail[shop];
      // 优惠部分分割
      if (_.get(otd, 'discount_detail')) {
        // 如果有优惠部分,那就得找,优惠里面有没有对应的商品规格
        const discount_detail = this.getGoodsListDiscountDetail(goodsList, _.get(otd, 'discount_detail'));
        total_detail.discount_detail = discount_detail;
      }
      noTimes++;
      const obj = { ...orderDetailData, shop, goods: goodsList, no: detailNo, total_detail, remarks };
      // #region 团购
      const type = _.get(order, 'type');
      let group = _.get(order, 'group');
      if (type === '1') {
        // 说明是团购,需要找订单中有没有团的id
        obj.type = '1';
        obj.group = group;
        if (!group) {
          // 需要创建团,这是团长支付的单子,开团;然后把id回补
          group = await this.ctx.service.group.group.create(obj, tran);
          obj.group = group;
          tran.update('Order', order_id, { group, type: '1' });
        } else {
          // 需要参团操作,这是团员的单子,将人加入团中
          await this.ctx.service.group.group.join(customer, group, tran);
        }
      }
      // #endregion
      tran.insert('OrderDetail', obj);
      // arr.push(obj);
    }
    // await this.model.insertMany(arr);
  }

  async afterUpdate(filter, body, data) {
    const status = _.get(data, 'status');
    if (status === '3') {
      // 处理积分,签收再加
      await this.ctx.service.user.point.addPoints(data._id);
    }
    return data;
  }

  /**
   * 将商品规格列表中,优惠的部分提取出来,分单用
   * @param {Array} goodsList 某店的商品列表
   * @param {Object} odd discount_detail 支付订单的优惠券设置
   */
  getGoodsListDiscountDetail(goodsList, odd) {
    const result = {};
    for (const uc_id in odd) {
      const detail = odd[uc_id];
      const obj = {};
      for (const g of goodsList) {
        const { _id } = g;
        const gdd = detail[_id];
        if (gdd) obj[_id] = gdd;
      }
      result[uc_id] = obj;
    }
    return result;
  }

  /**
   * 计算某店铺的金额总计
   * @param {Array} goodsList 商品规格列表
   */
  getTotalDetail(goodsList) {
    const goods_total = goodsList.reduce((p, n) => this.ctx.plus(p, this.ctx.multiply(n.sell_money, n.buy_num)), 0);
    const freight_total = goodsList.reduce((p, n) => this.ctx.plus(p, this.ctx.multiply(n.freight, n.buy_num)), 0);
    return { goods_total, freight_total };
  }

  async fetch(filter) {
    assert(filter);
    filter = await this.beforeFetch(filter);
    const { _id, id } = filter;
    if (_id || id) filter = { _id: ObjectId(_id || id) };
    const { populate } = this.getRefMods();
    let res = await this.model.findOne(filter).populate(populate).exec();
    res = JSON.parse(JSON.stringify(res));
    // 找售后和评论
    const afterSale = await this.afterSaleModel.find({ order_detail: res._id });
    const rate = await this.goodsRateModel.find({ orderDetail: res._id });
    const goods = _.get(res, 'goods', []);
    for (const g of goods) {
      const r = afterSale.find(f => ObjectId(_.get(f, 'goods._id')).equals(g._id));
      if (r) g.is_afterSale = true;
      else g.is_afterSale = false;
      const r2 = rate.find(f => ObjectId(_.get(f, 'goods._id')).equals(g._id));
      if (r2) g.is_rate = true;
      else g.is_rate = false;
    }
    res.goods = goods;
    return res;
  }

  async query(filter, { skip = 0, limit, sort, desc, projection } = {}) {
    // 处理排序
    if (sort && _.isString(sort)) {
      sort = { [sort]: desc ? -1 : 1 };
    } else if (sort && _.isArray(sort)) {
      sort = sort.map(f => ({ [f]: desc ? -1 : 1 })).reduce((p, c) => ({ ...p, ...c }), {});
    }
    let condition = _.cloneDeep(filter);
    condition = await this.beforeQuery(condition);
    condition = this.dealFilter(condition);
    // 过滤出ref字段
    const pipline = [{ $sort: { 'meta.createdAt': -1 } }];
    pipline.push({ $match: condition });
    // 整理字段
    // 店铺需要的字段
    pipline.push({ $addFields: { shop_id: { $toObjectId: '$shop' } } });
    pipline.push({
      $lookup: {
        from: 'shop',
        localField: 'shop_id',
        foreignField: '_id',
        as: 'shopInfo',
      },
    });
    pipline.push({ $addFields: { customer_id: { $toObjectId: '$customer' } } });
    pipline.push({
      $lookup: {
        from: 'user',
        localField: 'customer_id',
        foreignField: '_id',
        as: 'customerInfo',
      },
    });

    pipline.push({ $unwind: '$shopInfo' });
    pipline.push({ $unwind: '$customerInfo' });
    const lastProject = {
      $project: {
        _id: 1,
        type: 1,
        order: 1,
        buy_time: 1,
        pay_time: 1,
        status: 1,
        no: 1,
        group: 1,
        address: 1,
        goods: {
          _id: 1,
          sell_money: 1,
          freight: 1,
          name: 1,
          buy_num: 1,
          group_config: 1,
          goods: { name: 1, file: 1 },
          file: 1,
        },
        shop: {
          _id: '$shopInfo._id',
          name: '$shopInfo.name',
        },
        customer: {
          _id: '$customerInfo._id',
          name: '$customerInfo.name',
        },
      },
    };
    pipline.push(lastProject);
    const qPipline = _.cloneDeep(pipline);
    if (parseInt(skip) >= 0) qPipline.push({ $skip: parseInt(skip) });
    if (parseInt(limit)) qPipline.push({ $limit: parseInt(limit) });
    const rs = await this.model.aggregate(qPipline);
    const tPipline = _.cloneDeep(pipline);
    tPipline.push({ $addFields: { id: { $toString: '$_id' } } });
    tPipline.push({ $count: 'id' });
    const t = await this.model.aggregate(tPipline);
    const total = _.get(_.head(t), 'id');
    const list = [];
    for (const i of rs) {
      const { goods } = i;
      const obj = _.cloneDeep(i);
      const real_pay = this.ctx.service.util.orderDetail.computedRealPay(obj);
      obj.real_pay = real_pay;
      obj.buy_num_total = goods.reduce((p, n) => this.ctx.plus(p, n.buy_num), 0);
      for (const og of obj.goods) {
        const { file = [] } = og;
        const gfile = _.get(og, 'goods.file', []);
        const nf = [ ...file, ...gfile ];
        const url = _.get(_.head(nf), 'url');
        og.url = url;
        delete og.file;
        delete og.goods.file;
      }
      // 评价与售后
      const rate = await this.goodsRateModel.findOne({ orderDetail: obj._id }, { _id: 1 });
      obj.rate = _.get(rate, '_id');
      const asum = await this.afterSaleModel.count({ order_detail: obj._id });
      obj.is_afterSale = asum > 0;
      list.push(obj);
    }
    return { data: list, total };
  }

}

module.exports = OrderDetailService;