'use strict';


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

class PatientService extends CrudService {
  constructor(ctx) {
    super(ctx, 'patient');
    this.model = this.ctx.model.Patient;
    this.pDocs = this.ctx.model.Patientdocs;
    this.pGroups = this.ctx.model.Group;
    this.pDoctor = this.ctx.model.Doctor;
    this.chatModel = this.ctx.model.Chat;
    this.remark = this.ctx.model.Remark;
    this.gc = this.ctx.model.Groupchat;
    this.room = this.ctx.model.Room;
  }

  async query({ doctorid, ...query }, { skip, limit }) {
    assert(doctorid, 'doctorid不能为空');
    const pdocall = await this.pDocs.find({ doctorid, ...query });
    const pdoc = await this.pDocs.find({ doctorid, ...query }).limit(limit).skip(skip);
    const patients = [];
    for (const el of pdoc) {
      const patient = await this.model.findById(el.patientid);
      patients.push(patient);
    }
    const result = { total: pdocall.length, data: patients };
    return result;
  }

  // 创建患者信息
  async create(data) {
    const { name, tel, openid, groupid } = data;
    assert(name, '患者名称不能为空');
    // assert(tel, '患者电话不能为空');
    assert(openid, '微信openid不能为空');
    assert(groupid, '缺少群信息项');

    const group = await this.pGroups.findById(groupid, '+patients');
    if (!group) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '群不存在');
    }
    const doctor = await this.pDoctor.findById(group.doctorid);
    // TODO: 检查是否已经注册
    let entity = await this.model.findOne({ openid });
    if (entity) {
      if (group.patients.length === 0) {
        const patient = { patientid: entity.id, url: entity.url, name: entity.name, openid: entity.openid };
        group.patients.push(patient);
        await group.save();
      } else {
        console.log(group.patients);
        console.log(entity._id);
        const groupPatient = group.patients.find(fil => ObjectId(fil.patientid).equals(entity._id));
        if (groupPatient) {
          throw new BusinessError(ErrorCode.DATA_EXIST, '已经注册，无需重复注册');
        } else {
          const patient = { patientid: entity.id, url: entity.url, name: entity.name, openid: entity.openid };
          group.patients.push(patient);
          await group.save();
        }
      }
      const pdoc = await this.pDocs.findOne({ doctorid: doctor.id });
      if (!pdoc) {
        await this.pDocs.create({ patientid: entity.id, patientname: entity.name, doctorid: doctor.id, doctorname: doctor.name });
      }
    } else {
      entity = await this.model.create(data);
      await this.pDocs.create({ patientid: entity.id, patientname: name, doctorid: doctor.id, doctorname: doctor.name });
      const patient = { patientid: entity.id, url: entity.url, name: entity.name, openid: entity.openid };
      group.patients.push(patient);
      await group.save();
    }
    return await this.fetch({ id: entity.id });
  }

  // 查询患者所属医生列表信息
  async doctors({ id }) {
    assert(id, '患者id不能为空');
    const doctors = await this.pDocs.find({ patientid: id });
    const data = [];
    const remarks = await this.remark.find({ remarkid: id });
    for (const elm of doctors) {

      let contenttype = '';
      let content = '';
      let sendtime = '';
      const chats = await this.chatModel.find({ $or: [{ sendid: elm.doctorid, receiveid: elm.patientid }, { sendid: elm.patientid, receiveid: elm.doctorid }] }).sort({ sendtime: -1 }).limit(1)
        .skip(0);
      if (chats && chats.length > 0) {
        contenttype = chats[0].contenttype;
        content = chats[0].content;
        sendtime = chats[0].sendtime;
      }
      let { patientid, patientname, doctorid, doctorname } = elm;
      const s_r = remarks.find(f => ObjectId(f.benoteid).equals(patientid));
      if (s_r) patientname = s_r.name;
      const r_r = remarks.find(f => ObjectId(f.benoteid).equals(doctorid));
      if (r_r) doctorname = r_r.name;
      const newdata = { patientid: elm.patientid, patientname, doctorid: elm.doctorid, doctorname, contenttype, content, sendtime };

      data.push(newdata);
    }
    return data;
  }

  // 查询患者所属医生列表信息
  async groups({ id }) {
    assert(id, '患者id不能为空');
    let groups = await this.pGroups.find({ 'patients.patientid': id });
    if (groups.length > 0) groups = JSON.parse(JSON.stringify(groups));
    for (const g of groups) {
      const chat = await this.gc.findOne({ groupid: g.id }).sort({ 'meta.createdAt': -1 });
      if (chat) {
        const { content, contenttype } = chat;
        g.content = content;
        g.contenttype = contenttype;
      }
    }
    return groups;
  }

  async delete({ id }) {
    // 删除病人和医生的关联
    await this.pDocs.deleteMany({ patientid: id });
    // 删除群组中的病人
    const res = await this.pGroups.find({ 'patients.patientid': id }, '+patients');
    for (const i of res) {
      i.patients = i.patients.filter(f => f.patientid !== id);
      await i.save();
    }
    // 删除该病人
    await this.model.findByIdAndDelete(id);

    return 'deleted';
  }

  async updateInfo({ id }, data) {
    // TODO: 检查数据是否存在
    const entity = await this.model.findById(id);
    if (!entity) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '患者信息不存在');
    }
    entity.name = data.name;
    entity.cardno = data.cardno;
    entity.gender = data.gender;
    entity.birthday = data.birthday;
    entity.address = data.address;
    entity.tel = data.tel;
    entity.urgentname = data.urgentname;
    entity.urgenttel = data.urgenttel;
    entity.content = data.content;
    entity.openid = data.openid;
    entity.icon = data.icon;
    return await entity.save();
  }

  // 用户创建患者病历信息
  async createEmr({ patientid }, data) {
    const { indate, outdate, title, content, doctorid, doctorname } = data;
    assert(patientid, '患者ID不能为空');
    assert(title, '标题不能为空');

    // TODO: 检查数据是否存在
    const patient = await this.model.findById(patientid, '+emrs');
    if (!patient) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '患者信息不存在');
    }

    // 准备数据
    const newData = { indate, outdate, title, content, doctorid, doctorname };
    // TODO: 保存数据
    const newemr = patient.emrs.create(newData);
    patient.emrs.push(newemr);
    await patient.save();
    return newemr;
  }

  // 删除患者病历信息
  async deleteEmr({ patientid, id }) {
    assert(id, 'id不能为空');

    // TODO: 检查数据是否存在
    let patient;
    if (patientid) {
      patient = await this.model.findById(patientid, '+emrs');
    }
    if (!patient) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '患者信息不存在');
    }
    // TODO: 保存数据
    patient.emrs.id(id).remove();
    return await patient.save();
  }

  // 修改患者病历信息
  async updateEmr({ patientid, id }, data) {
    assert(id, 'id不能为空');

    // TODO: 检查数据是否存在
    let patient;
    if (patientid) {
      patient = await this.model.findById(patientid, '+emrs');
    }
    if (!patient) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '患者信息不存在');
    }

    // TODO: 保存数据
    const emr = patient.emrs.id(id);
    const { indate, outdate, title, content, doctorid, doctorname, img } = data;
    emr.indate = indate;
    emr.outdate = outdate;
    emr.title = title;
    emr.content = content;
    emr.doctorid = doctorid;
    emr.doctorname = doctorname;
    emr.img = img;
    return await patient.save();
  }

  // 取得患者病历信息
  async fetchEmr({ patientid, emrid }) {
    assert(patientid, '患者id不能为空');
    assert(emrid, '病历id不能为空');
    // TODO: 检查数据是否存在
    const patient = await this.model.findById(patientid, '+emrs');
    const emr = patient.emrs.id(emrid);
    return emr;
  }

  // 根据openid 取得医生信息
  async findByOpenid(data) {
    return await this.model.findOne({ openid: data.openid });
  }
  // 医生移除病人
  async fromDoctorDelete({ doctorid, patientid } = {}) {
    assert(doctorid, '缺少医生信息');
    assert(patientid, '缺少病人信息');
    // 切断医生和病人的关系
    // 删除医生群组下的这个病人
    const res = await this.pGroups.find({ 'patients.patientid': patientid, doctorid }, '+patients');
    for (const i of res) {
      i.patients = i.patients.filter(f => f.patientid !== patientid);
      await i.save();
    }
    // 删除医生和病人的关系,patient_doctor
    await this.pDocs.deleteMany({ patientid, doctorid });
    // 删除医生和病人的聊天房间
    await this.room.deleteMany({ patientid, doctorid });
    // 删除医生和病人的单聊,群聊的聊天记录
    await this.chatModel.deleteMany({ $or: [{ sendid: doctorid, receiveid: patientid }, { sendid: patientid, receiveid: doctorid }] });
    await this.gc.deleteMany({ doctorid, sendid: patientid });

  }

}

module.exports = PatientService;