'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 Transaction = require('mongoose-transactions');
const { ObjectId } = require('mongoose').Types;

// 对账
class BillService extends CrudService {
  constructor(ctx) {
    super(ctx, 'bill');
    this.orderDetailModel = this.ctx.model.Trade.OrderDetail;
    this.afterSaleModel = this.ctx.model.Trade.AfterSale;
    this.tran = new Transaction();
  }
  /**
   * 对账标记
   * @param {Object} body 参数体
   * @param body.order 对账的订单内容
  //  ** _id:orderDetail的id
  //  ** spec_id: 商品规格id
   * @param body.afterSale 对账的售后id集合
   */
  async outBill({ order = [], afterSale = [] }) {
    const data = { out_bill: '0' };
    await this.orderDetailModel.updateMany({ _id: order.map(i => ObjectId(i)) }, data);
    await this.afterSaleModel.updateMany({ _id: afterSale.map(i => ObjectId(i)) }, data);
  }


  /**
   * 生成店铺对账单
   ** 根据店铺id,开始时间和结束时间,形成对账单
   * @param {Object} query 查询条件
   */
  async getBill(query) {
    const { shop, start, end } = query;
    assert(start, '缺少开始时间');
    assert(end, '缺少结束时间');
    const orderList = await this.makeBillOrderPart(query);
    const afterSaleList = await this.makeBillAfterSalePart(query);
    const ot = orderList.reduce((p, n) => this.ctx.plus(p, n.total), 0);
    const oa = afterSaleList.reduce((p, n) => this.ctx.plus(p, n.money), 0);
    const total = this.ctx.minus(ot, oa);
    return { total, orderList, afterSaleList };
  }

  /**
   * 对账单售后部分
   * @param {Object} query 查询条件
   */
  async makeBillAfterSalePart(query) {
    const { shop, start, end } = query;
    const pipline = [];
    // 商店过滤&时间过滤
    const q = { $match: { $and: [{ apply_time: { $gte: start } }, { apply_time: { $lte: end } }], status: { $in: [ '-1', '-2' ] } } }; // 退款,退货的完成状态, status:{$in:['-1','-2']}, out_bill:{$ne:'0'}
    if (shop) q.$match.shop = shop;
    pipline.push(q);
    // 组织数据
    // 单号,商品,规格,退款金额,退款时间
    // 单号是要用orderDetail关联获取;商品&规格&退款时间&退款金额有;
    pipline.push({ $addFields: { orderDetail_id: { $toObjectId: '$order_detail' } } });
    pipline.push({
      $lookup: {
        from: 'orderDetail',
        localField: 'orderDetail_id',
        foreignField: '_id',
        pipeline: [{ $project: { no: 1, _id: 1 } }],
        as: 'orderDetailInfo',
      },
    });
    // 组织数据
    pipline.push({ $unwind: '$orderDetailInfo' });
    pipline.push({
      $project: {
        no: '$orderDetailInfo.no',
        goods: '$goods.goods.name',
        spec: '$goods.name',
        end_time: 1,
        money: { $toString: '$money' },
        rowKey: { $concat: [{ $toString: '$_id' }, '_', '$goods.goods._id', '_', '$goods._id', '_', '$apply_time' ] },
      },
    });
    const afterSaleList = await this.afterSaleModel.aggregate(pipline);
    return afterSaleList;
  }

  /**
   * 对账单订单部分
   * @param {Object} query 查询条件
   */
  async makeBillOrderPart(query) {
    const { shop, start, end } = query;
    const pipline = [];
    // 商店过滤&时间过滤
    const q = { $match: { $and: [{ pay_time: { $gte: start } }, { pay_time: { $lte: end } }] } }; // , out_bill:{$ne:'0'}
    if (shop) q.$match.shop = shop;
    pipline.push(q);
    // #region 整理数据
    // 整理最外层的orderDetail,没用的裁掉
    const $project = {
      type: 1,
      total_detail: 1,
      no: 1,
      pay_time: 1,
      goods: {
        _id: 1,
        sell_money: 1,
        buy_num: 1,
        freight: 1,
        group_config: { money: 1 },
        name: 1,
        goods: { name: 1, _id: 1 },
      },
    };
    pipline.push({ $project });
    // 按规格平铺开
    pipline.push({ $unwind: '$goods' });
    // #endregion
    const orderList = await this.orderDetailModel.aggregate(pipline);
    const dictData = await this.ctx.model.Dev.DictData.find({ code: 'order_type' });
    const list = [];
    for (const order of orderList) {
      const o = _.cloneDeep(order);
      const type = dictData.find(f => f.value === o.type);
      const moneyDetail = this.moneyDetail(order);
      const obj = {
        _id: _.get(o, '_id'),
        no: _.get(o, 'no'),
        type: _.get(type, 'label'),
        pay_time: _.get(o, 'pay_time'),
        goods_id: _.get(o, 'goods._id'),
        goods: _.get(o, 'goods.goods.name'),
        spec: _.get(o, 'goods.name'),
        spec_id: _.get(o, 'goods._id'),
        freight: _.get(o, 'goods.freight'),
        buy_num: _.get(o, 'goods.buy_num'),
        price: o.type === '1' ? _.get(o, 'goods.group_config.money') : _.get(o, 'goods.sell_money'),
        discount: _.get(moneyDetail, 'dt'),
        total: o.type === '1' ? _.get(moneyDetail, 'ggrp') : _.get(moneyDetail, 'grp'),
        rowKey: `${_.get(o, '_id')}_${_.get(o, 'goods.goods._id')}_${_.get(o, 'goods._id')}`,
      };
      list.push(obj);
    }
    return list;
  }

  moneyDetail(data) {
    const ddt = _.get(data, 'total_detail.discount_detail', {});
    const { sell_money: sm, freight: f, buy_num: bn, group_config, _id } = data.goods;
    const st = this.ctx.multiply(sm, bn);
    const ft = this.ctx.multiply(f, bn);
    const gt = this.ctx.plus(st, ft);
    const dd = {};
    for (const uc_id in ddt) {
      const detail = _.get(ddt, uc_id, {});
      const value = detail[_id];
      if (value) dd[uc_id] = value;
    }
    const dt = Object.values(dd).reduce((p, n) => this.ctx.plus(p, n), 0);
    const grp = this.ctx.minus(gt, dt);
    let obj = { sm, f, bn, st, ft, gt, dd, dt, grp };
    const gsm = _.get(group_config, 'money');
    if (gsm) {
      const gst = this.ctx.multiply(gsm, bn);
      const ggt = this.ctx.plus(gst, ft);
      const ggrp = this.ctx.minus(ggt, dt);
      obj = { ...obj, gsm, gst, ggt, ggrp };
    }
    return obj;
  }
}

module.exports = BillService;