'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');

// 只属于这个项目的工具service
class SpmService extends CrudService {
  constructor(ctx) {
    super(ctx, 'spm');
    this.org = this.ctx.model.Organization;
    this.personal = this.ctx.model.Personal;
  }

  /**
   * 入口,根据method,分配到函数中进行处理,返回结果
   * @param {Object} {method} method:在这个service的函数
   * @param {*} body 条件
   */
  async index({ method }, body) {
    return await this[method](body);
  }

  /**
   * 获取用户信息,个人(专家)/企业都有可能
   * @param {Object} condition 条件
   */
  async getAllUser(condition) {
    const { ids } = condition;
    const projection = 'name phone';
    // 直接先用ids在企业表中查询
    let arr = [];
    const org = await this.org.find({ _id: ids }, projection);
    arr = arr.concat(org);
    if (org.length !== ids.length) {
      // 还有个人用户,再查
      const personal = await this.personal.find({ _id: ids }, projection);
      arr = arr.concat(personal);
    }
    return arr;
  }

  /**
   * 根据条件查找用户
   * @param {Object} condition 查询条件
   */
  async getUser(condition) {
    let res;
    // 先查是不是企业
    const org = await this.org.findOne(condition);
    if (org) res = org;
    else {
      const personal = await this.personal.findOne(condition);
      if (personal) res = personal;
    }
    return res;
  }

  /**
   * 直接操作model做什么
   * @param {Object} condition 条件
   * @property {String} model 表
   * @property {String} method mongoose的函数
   * @property {Object} query 查询条件
   * @property {Object} body 添加/修改数据
   * @property {String/Object} projection 查询使用,选取指定字段
   */
  async useModel(condition = {}) {
    const { method, query = {}, body = {}, projection } = condition;
    let { model } = condition;
    model = _.capitalize(model);
    assert(model, '缺少指定表');
    assert(method, '缺少使用函数');
    // 区分method的情况
    let res;
    // 添加/批量添加
    if (method === 'create' || method === 'insertMany') {
      res = await this.ctx.model[model][method](body);
    }
    // 修改(updateOne)/批量修改(updateMany)
    if (method.includes('update')) {
      res = await this.ctx.model[model][method](query, body);
    }
    // 删除(deleteOne)/批量删除(deleteMany)
    if (method.includes('delete')) {
      res = await this.ctx.model[model][method](query);
    }
    // 查询(find,findById,findOne),反正都是只要query
    if (method.includes('find')) {
      res = await this.ctx.model[model][method](query, projection);
    }
    // 再下来,就是聚合了,聚合就算了吧.这个还跨项目写就没啥必要了
    return res;
  }

  /**
   * 调用service
   * @param {Object} condition 条件
   * @property {String} model 表
   * @property {String} method mongoose的函数
   */
  async useService(condition) {
    const { service, method, body } = condition;
    assert(service, '缺少指定表');
    assert(method, '缺少使用函数');
    const arr = service.split('.');
    let serve = this.ctx.service;
    for (const i of arr) {
      serve = serve[i];
    }
    return await serve[method](body);
  }
}

module.exports = SpmService;