'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 moment = require('moment');
//
class TempLessonApplyService extends CrudService {
  constructor(ctx) {
    super(ctx, 'templessonapply');
    this.model = this.ctx.model.Apply.TempLessonApply;
    this.payOrderService = this.ctx.service.business.payOrder;
    this.lessonStudentService = this.ctx.service.business.lessonStudent;
  }

  async beforeCreate(data) {
    const query = _.pick(data, [ 'school_id', 'lesson_id', 'student_id', 'coach_id' ]);
    const num = await this.model.count(query);
    if (num > 0) throw new BusinessError(ErrorCode.DATA_EXISTED, '学生已申请临时参加课程');
    return data;
  }

  // 去支付,生成支付单
  async toPay({ id, payer_id }) {
    const data = await this.model.findById(id);
    if (!data) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到临时上课的申请,无法进行支付');
    const { student_id, coach_id, lesson_id, school_id, money } = data;
    const payer_role = payer_id === student_id ? 'Student' : payer_id === coach_id ? 'Coach' : null;
    if (!payer_role) throw new BusinessError(ErrorCode.DATA_INVALID, '该支付用户不是学生也不是教练');
    const obj = { payer_id, payer_role, pay_for: 'Lesson', from_id: lesson_id, school_id, money, time: moment().format('YYYY-MM-DD HH:mm:ss'), desc: '私教课' };
    // 找openid
    const user = await this.ctx.model.User[payer_role].findById(payer_id).populate('user_id');
    if (!user) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到用户信息');
    const openid = _.get(user, 'user_id.openid');
    if (!openid) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到用户微信信息');
    obj.openid = openid;
    const res = await this.payOrderService.create(obj);
    return res;
  }

  // 处理审核成功的情况
  async afterUpdate(filter, body, data) {
    const { pay_id } = data;
    if (pay_id.status !== '1') return data;
    // 付款成功,去添加课程与学生关联
    const obj = _.pick(data, [ 'school_id', 'lesson_id', 'student_id', 'money', 'is_pay', 'pay_id' ]);
    obj.is_pay = '1';
    await this.lessonStudentService.create(obj);
    return data;
  }
}

module.exports = TempLessonApplyService;