server/app/controller/home.js

'use strict';
const _ = require('lodash');
const { BusinessError, ErrorCode } = require('naf-core').Error;
const Controller = require('egg').Controller;
class HomeController extends Controller {
  async index() {
    const { ctx } = this;
    ctx.body = 'hi, egg';
  }
  async m1() {
    let score = 5;
    let arr = [ 5, 4, 1, 2, 4, 3, 2, 5, 5, 2, 3, 5, 0, 5, 2, 3 ];
    arr = arr.sort((a, b) => b - a);
    const length = arr.length;
    console.log(arr);
    console.log(length);
    let mid,
      midIndex;
    const wl = [],
      gl = [];
    if (length % 2 !== 0) {
      midIndex = this.ctx.plus(Math.floor(length / 2), 1);
      mid = arr[midIndex];
    } else {
      midIndex = this.ctx.divide(length, 2);
      mid = this.ctx.divide(this.ctx.plus(arr[midIndex], arr[midIndex + 1]), 2);
    }
    for (const i of arr) {
      if (i >= mid) gl.push(i);
      else wl.push(i);
    }
    const offset = _.floor(this.ctx.divide(gl.length, 10));
    for (let i = 0; i < offset.length; i++) {
      wl.pop();
    }
    score = this.ctx.minus(score, this.ctx.multiply(wl.length, 0.01));

    this.ctx.ok({ data: score });
  }

  async makeCoupons() {
    const dictDataModel = this.ctx.model.Dev.DictData;
    const couponModel = this.ctx.model.Trade.Coupon;
    // 过期字典
    const expList = await dictDataModel.find({ code: 'coupon_expire_type' });
    // 减免字典
    const disList = await dictDataModel.find({ code: 'coupon_discount_type' });
    // 使用字典
    const useList = await dictDataModel.find({ code: 'coupon_use_limit' });
    // 领取字典
    const getList = await dictDataModel.find({ code: 'coupon_get_limit' });

    const arr = [];
    for (const e of expList) {
      const { value: expire_type, label: el } = e;
      for (const d of disList) {
        const { value: discount_type, label: dl } = d;
        for (const u of useList) {
          const { value: use_limit, label: ul } = u;
          for (const g of getList) {
            const { value: get_limit, label: gl } = g;
            const obj = { issue: '0', expire_type, discount_type, use_limit, get_limit, num: 100, status: '0' };
            obj.name = `平台测试优惠券-${el}-${dl}-${ul}-${gl}`;
            arr.push(obj);
          }
        }
      }
    }
    await couponModel.insertMany(arr);
    return arr;
  }
}

module.exports = HomeController;