'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 { ObjectId } = require('mongoose').Types;

//
class NoticeService extends CrudService {
  constructor(ctx) {
    super(ctx, 'notice');
    this.model = this.ctx.model.User.Notice;
  }

  async create(body) {
    const { customer = [], ...others } = body;
    if (!_.isArray(customer)) throw new BusinessError(ErrorCode.DATA_INVALID, '数据格式错误');
    if (customer.length <= 0) throw new BusinessError(ErrorCode.BADPARAM, '缺少发送对象');
    if (!_.get(others, 'source_id') && _.get(others, 'source') === '0') others.source_id = ObjectId();
    const arr = customer.map(i => ({ customer: i, ...others }));
    await this.model.insertMany(arr);
  }

  async msgList(query) {
    const { skip, limit, ...others } = query;
    const pipeline = [];
    const $match = {};
    if (_.get(others, 'source')) $match.source = _.get(others, 'source');
    if (_.get(others, 'source_id')) $match.source_id = _.get(others, 'source_id');
    if (_.get(others, 'customer')) $match.customer = _.get(others, 'customer');
    if (Object.keys($match).length > 0) pipeline.push({ $match });
    pipeline.push({ $group: { _id: '$source_id', source: { $first: '$source' }, time: { $first: '$time' } } });
    pipeline.push({ $sort: { time: -1 } });

    const qp = _.cloneDeep(pipeline);
    if (skip && limit) {
      qp.push({ $skip: parseInt(skip) });
      qp.push({ $limit: parseInt(limit) });
    }
    const data = await this.model.aggregate(qp);
    const tp = _.cloneDeep(pipeline);
    tp.push({ $count: 'total' });
    const tr = await this.model.aggregate(tp);
    const total = _.get(_.head(tr), 'total', 0);
    return { data, total };
  }
}

module.exports = NoticeService;