'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');
const moment = require('moment');
//
class ActOrderService extends CrudService {
  constructor(ctx) {
    super(ctx, 'actorder');
    this.model = this.ctx.model.Trade.ActOrder;
    this.orderDetailModel = this.ctx.model.Trade.OrderDetail;
    this.orderModel = this.ctx.model.Trade.Order;
    this.platformActModel = this.ctx.model.System.PlatformAct;
    this.gjaModel = this.ctx.model.Shop.GoodsJoinAct;
    this.tran = new Transaction();
  }

  /**
   * 创建订单与活动的关系
   * @param {String} id 订单id
   * @param {Object} data 订单数据
   * @param {Transaction} tran 数据库事务实例
   */
  async create(id, data, tran) {
    // 检查活动类型为1的 活动,再查下面的商品
    const actList = await this.platformActModel.find({ is_use: '0', type: { $ne: '0' } }, { _id: 1 });
    if (actList.length <= 0) return;
    // 整理出订单内的商品id
    const odGoods = data.goods.map(i => {
      const { _id: spec_id, goods } = i;
      const goods_id = _.get(goods, '_id');
      return { spec_id, goods_id };
    });
    const actOrderList = [];
    // 循环所有活动,找当前购买的商品,是否出现在这些活动之中,如果出现,就需要添加关系
    for (const act of actList) {
      const { _id: platformAct } = act;
      const query = { goods: odGoods.map(i => i.goods_id), platformAct };
      const goodsList = await this.gjaModel.find(query);
      // 获取受影响的商品
      const influenceGoods = goodsList.map(i => i.goods);
      if (influenceGoods.length <= 0) continue;
      const actOrder = { platform_act: platformAct, order_detail: id };
      // 用受影响的 商品id, 在 odGoods 中 找到对应的数据作为 actOrder的goods
      actOrder.goods = odGoods.filter(f => influenceGoods.includes(f.goods_id));
      actOrderList.push(actOrder);
    }
    for (const data of actOrderList) {
      tran.insert('ActOrder', data);
    }
  }
  // 改为聚合查询
  async query(filter, { skip = 0, limit, sort, desc, projection } = {}) {
    const { platform_act, order_detail, is_deal, goods } = filter;
    const pipeline = [];
    const modelMatch = {};
    if (platform_act) modelMatch.platform_act = platform_act;
    if (order_detail) modelMatch.order_detail = order_detail;
    if (is_deal) modelMatch.is_deal = is_deal;
    if (Object.keys(modelMatch).length > 0) pipeline.push({ $match: modelMatch });
    // 表关联

    pipeline.push({ $addFields: { order_detail_id: { $toObjectId: '$order_detail' } } });
    const odLookUp = {
      from: 'orderDetail',
      localField: 'order_detail_id',
      foreignField: '_id',
      as: 'odi',
    };
    // 加入查询条件, 限制下订单状态
    const odPipeline = [{ $match: { status: { $in: [ '1', '2-', '2', '3' ] } } }];
    if (goods) {
      odPipeline.push({ $match: { 'goods.goods.name': new RegExp(goods) } });
    }
    odPipeline.push({ $project: { name: 1, pay_time: 1, no: 1, customer: 1, shop: 1, status: 1, address: { name: 1, phone: 1, address: 1 } } });
    odPipeline.push({ $addFields: { shop_id: { $toObjectId: '$shop' } } });
    odPipeline.push({
      $lookup: {
        from: 'shop',
        localField: 'shop_id',
        foreignField: '_id',
        pipeline: [{ $project: { name: 1 } }],
        as: 'shopInfo',
      },
    });
    odPipeline.push({ $addFields: { customer_id: { $toObjectId: '$customer' } } });
    odPipeline.push({
      $lookup: {
        from: 'user',
        localField: 'customer_id',
        foreignField: '_id',
        pipeline: [{ $project: { name: 1 } }],
        as: 'cInfo',
      },
    });
    odPipeline.push({
      $project: {
        _id: 0,
        order_detail: '$_id',
        name: 1,
        pay_time: 1,
        no: 1,
        custumer_name: { $first: '$cInfo.name' },
        shop_name: { $first: '$shopInfo.name' },
        status: 1,
        address: { name: 1, phone: 1, address: 1 },
      },
    });
    odLookUp.pipeline = odPipeline;
    pipeline.push({ $lookup: odLookUp });
    pipeline.push({ $unwind: '$odi' });
    pipeline.push({ $replaceRoot: { newRoot: { $mergeObjects: [ '$$ROOT', '$$ROOT.odi' ] } } });
    pipeline.push({ $project: { odi: 0 } });
    // 查询管道
    const fp = _.cloneDeep(pipeline);
    pipeline.push({ $sort: { pay_time: 1 } });
    if (_.isNumber(skip) && skip > 0) pipeline.push(skip);
    if (_.isNumber(limit) && limit > 0) pipeline.push(limit);
    const data = await this.model.aggregate(fp);
    // 总数管道
    const tp = _.cloneDeep(pipeline);
    tp.push({ $count: 'total' });
    const tr = await this.model.aggregate(tp);
    return { data, total: _.get(_.head(tr), 'total', 0) };
  }

  /**
   * 获取本单最大退款金额
   * @param {String} id 数据id
   */
  async getRefundMaxMoney({ id }) {
    const data = await this.model.findById(id);
    if (!data) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到活动订单');
    const { order_detail, goods } = data;
    const orderDetail = await this.orderDetailModel.findById(order_detail);
    if (!orderDetail) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到订单信息');
    const moneyDetail = this.ctx.service.util.orderDetail.moneyDetail(orderDetail);
    let maxMoney = 0;
    // 判断订单类型,取出不同的实付价格
    let priceKey;
    if (_.get(orderDetail, 'type', '0') === '1') priceKey = 'ggrp';
    else priceKey = 'grp';

    for (const g of goods) {
      // 该规格总价明细
      const detail = _.get(moneyDetail, g.spec_id);
      if (!detail) continue;
      // 改规格实际支付价格
      const rp = _.get(detail, priceKey, 0);
      maxMoney = this.ctx.plus(maxMoney, rp);
    }
    // 找total_detail中的act字段,减掉 活动相关 已经退款的金额;
    const act = _.get(orderDetail, 'total_detail.act', []);
    const isRefundParts = act.reduce((p, n) => this.ctx.plus(p, n.money), 0);
    const canRefundParts = this.ctx.minus(maxMoney, isRefundParts);
    return canRefundParts;
  }

  /**
   * 批量返现
   * @param {Object} body 参数体
   * @param {Array} body.data 返现数组数据
   * @property {Number} money 退款金额
   * @property {String} id 数据id
   */
  async toRefund({ data }) {
    for (const i of data) {
      const { id, money, no } = i;
      const max = await this.getRefundMaxMoney({ id });
      if (this.ctx.minus(max, money) < 0) throw new BusinessError(ErrorCode.DATA_INVALID, `订单号:${no} 超过最大退款金额`);

    }
    try {
      const failed = [];
      for (const i of data) {
        const { id: act_id, money } = i;
        const obj = { act_id, money, time: moment().format('YYYY-MM-DD HH:mm:ss') };
        const actOrder = await this.model.findById(act_id, 'order_detail');
        const { order_detail } = actOrder;
        const orderDetail = await this.orderDetailModel.findById(order_detail, 'total_detail');
        const total_detail = _.get(orderDetail, 'total_detail', {});
        // 组织退款信息 {order_no,out_refund_no,money,reson}
        const refundData = await this.toMakeRefundData(i);
        obj.data = refundData;
        total_detail.act = [ ..._.get(total_detail, 'act', []), obj ];
        try {
          // 退款
          await this.ctx.service.trade.pay.refund(refundData);
          this.tran.update('OrderDetail', order_detail, { total_detail });
        } catch (error) {
          // next
          failed.push(obj);
          console.log(error);
        }
      }
      await this.tran.run();
    } catch (error) {
      await this.tran.rollback();
    } finally {
      this.tran.clean();
    }


  }

  /**
   * 根据促销返现数据生成退款数据
   * @param {Object} data 前端退款数据
   */
  async toMakeRefundData(data) {
    const { id, money } = data;
    const obj = { money, reason: '促销返现' };
    const actOrder = await this.model.findById(id);
    if (!actOrder) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到活动订单');
    const orderDetail = await this.orderDetailModel.findById(actOrder.order_detail, 'order');
    if (!orderDetail) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到订单信息');
    const order = await this.orderModel.findById(orderDetail.order, 'pay');
    if (!order) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到支付订单信息');
    const order_no = _.get(order, 'pay.pay_no');
    if (!order_no) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到支付单号');
    obj.order_no = order_no;
    const out_refund_no = `${order_no}-r-${_.random(10000, 99999)}`;
    obj.out_refund_no = out_refund_no;
    return obj;
  }
}

module.exports = ActOrderService;