service-visit/app/service/chat.js

'use strict';

const assert = require('assert');
const _ = require('lodash');
const { CrudService } = require('naf-framework-mongoose/lib/service');
const { BusinessError, ErrorCode } = require('naf-core').Error;

class ChatService extends CrudService {
  constructor(ctx) {
    super(ctx, 'chat');
    this.model = this.ctx.model.Chat;
    this.cDoctor = this.ctx.model.Doctor;
    this.cPatient = this.ctx.model.Patient;
    this.cRoom = this.ctx.model.Room;
  }

  async query({ sendid, receiveid, type }, { skip, limit }) {
    assert(sendid, 'sendid不能为空');
    assert(receiveid, 'receiveid不能为空');
    const chatsall = await this.model.find({ $or: [{ sendid, receiveid }, { sendid: receiveid, receiveid: sendid }] });
    const chats = await this.model.find({ $or: [{ sendid, receiveid }, { sendid: receiveid, receiveid: sendid }] }).sort({ sendtime: -1 }).limit(limit)
      .skip(skip);
    const newchats = [];
    for (const el of chats) {
      let icon;
      if (el.type === '1') {
        const patient = await this.cPatient.findById(el.sendid);
        if (patient) icon = patient.icon;
      }
      if (el.type === '0') {
        const doctor = await this.cDoctor.findById(el.sendid);
        if (doctor) icon = doctor.icon;
      }
      const { id, type, sendid, sendname, receiveid, receivename, sendtime, contenttype, content, status, audiotime } = el;
      newchats.push({ id, type, sendid, sendname, receiveid, receivename, sendtime, contenttype, content, status, icon, audiotime });
    }
    const result = { total: chatsall.length, data: newchats };
    return result;
  }

  // 创建群信息
  async create(data) {
    const { sendid, receiveid, type, content, audiotime } = data;
    assert(sendid, '发送人不能为空');
    assert(type, '类别不能为空');
    assert(content, '发送内容不能为空');
    assert(receiveid, '收件人不能为空');

    // 通过群id取得群内医生信息
    let sendname;
    let receivename;
    let receiveopenid;
    let patientid;
    let patientname;
    let doctorid;
    let doctorname;
    let icon;
    if (type === '0') {
      const doctor = await this.cDoctor.findById(sendid);
      if (!doctor) {
        throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '医生不存在');
      }
      sendname = doctor.name;
      const patient = await this.cPatient.findById(receiveid);
      if (!patient) {
        throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '患者信息不存在');
      }
      receivename = patient.name;
      receiveopenid = patient.openid;
      doctorid = sendid;
      patientid = receiveid;
      doctorname = sendname;
      patientname = receivename;
      icon = doctor.icon;
    } else {
      const patient = await this.cPatient.findById(sendid);
      if (!patient) {
        throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '患者信息不存在');
      }
      sendname = patient.name;
      const doctor = await this.cDoctor.findById(receiveid);
      if (!doctor) {
        throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '医生不存在');
      }
      receivename = doctor.name;
      receiveopenid = doctor.openid;
      patientid = sendid;
      doctorid = receiveid;
      doctorname = receivename;
      patientname = sendname;
      icon = patient.icon;
    }
    // TODO: 检查是否已经注册
    const newdata = { type, sendid, audiotime, sendname, receiveid, receivename, content, contenttype: data.contenttype };
    const entity = await this.model.create(newdata);

    // 发送成功的时候创建房间，首先判断是已经创建房间
    let room = await this.cRoom.findOne({ patientid, doctorid });
    if (!room) {
      const newroom = { patientid, patientname, doctorid, doctorname };
      room = await this.cRoom.create(newroom);
    }

    // 调用mq发送消息 只有在医生的情况下才会触发群消息
    const exchange = 'chat';
    const routeKey = room.id;
    const contentMq = sendname + '给' + receivename + '发布了一条消息请及时查收。';
    const parm = {
      durable: true,
      headers: {
        sendid,
        receiveid,
        type,
        icon,
        sendname,
        audiotime,
        receivename,
        createtime: new Date().toLocaleDateString(),
        content,
        contenttype: data.contenttype,
        remark: contentMq,
      },
    };
    const { mq } = this.ctx;
    if (mq) {
      try {
        await mq.topic(exchange, routeKey, content, parm);
      } catch (error) {
        this.ctx.logger.error(error);
      }
    } else {
      this.ctx.logger.error('!!!!!!没有配置MQ插件!!!!!!');
    }
    // 微信提醒
    await this.service.wechat.sendTemplateMsg(this.ctx.app.config.REVIEW_TEMPLATE_ID, receiveopenid, contentMq, sendname, new Date().toLocaleDateString(), '私聊', '请及时查看');
    return await this.fetch({ id: entity.id });
  }

  async delete({ id }) {
    await this.model.findByIdAndDelete(id);
    return 'deleted';
  }
}

module.exports = ChatService;