'use strict';

const assert = require('assert');
const moment = require('moment');
const Service = require('egg').Service;
class ContentService extends Service {
  constructor(ctx) {
    super(ctx);
    this.model = this.ctx.model.Content;
  }
  async create({ title, describe, content, bind, istop, date, thumbnail, recommend, annex, keywords, svip, isShow, status }) {
    assert(title, '标题不存在');
    assert(describe, '描述不存在');
    assert(content, '内容不存在');
    assert(bind, '绑定栏目不存在');
    try {
      const createAt = moment().format('x');
      const updateAt = moment().format('x');
      const item = await this.model.create({ title, describe, content, bind, istop, date, thumbnail, recommend, annex, createAt, updateAt, keywords, svip, isShow, status });
      return { errcode: 0, errmsg: '', data: item };
    } catch (error) {
      throw error;
    }
  }
  async update({ id, title, describe, content, bind, istop, date, thumbnail, recommend, annex, keywords, svip, isShow, status }) {
    assert(id, 'id不存在');
    try {
      const res = await this.model.findOne({ _id: id });
      if (!res) return { errcode: -1001, errmsg: '数据不存在', data: '' };
      const updateAt = moment().format('x');
      await this.model.updateOne({ _id: id }, { title, describe, content, bind, istop, date, thumbnail, recommend, annex, updateAt, keywords, svip, isShow, status });
      return { errcode: 0, errmsg: '', data: 'update' };
    } catch (error) {
      throw error;
    }
  }
  async delete({ id }) {
    assert(id, 'id不存在');
    try {
      const res = await this.model.findOne({ _id: id });
      if (!res) return { errcode: -1001, errmsg: '数据不存在', data: '' };
      await this.model.remove({ _id: id });
      return { errcode: 0, errmsg: '', data: 'delete' };
    } catch (error) {
      throw error;
    }
  }
  async query({ skip, limit, title, date, bind, keywords, svip, isShow, status }) {
    const filter = {};
    const arr = { title, date, bind, keywords, svip, isShow, status };
    for (const e in arr) {
      let datas;
      if (e === 'keywords') {
        datas = `{ "${e}": { "$elemMatch": { "$eq": "${arr[e]}" } } }`;
      } else {
        datas = `{ "${e}": { "$regex": "${arr[e]}" } }`;
      }
      if (arr[e]) {
        filter.$or = [];
        filter.$or.push(JSON.parse(datas));
      }
    }
    try {
      let res;
      const total = await this.model.find({ ...filter }, { content: false });
      if (skip && limit) {
        res = await this.model.find({ ...filter }, { content: false })
          .skip(Number(skip) * Number(limit))
          .limit(Number(limit))
          .sort({ date: 1 });
      } else {
        res = await this.model.find({ ...filter }, { content: false }).sort({ date: 1 });
      }
      return { errcode: 0, errmsg: '', data: res, total: total.length };
    } catch (error) {
      throw error;
    }
  }
  async fetch({ id }) {
    try {
      const res = await this.model.findOne({ _id: id });
      if (!res) return { errcode: -1001, errmsg: '数据不存在', data: '' };
      await this.model.updateOne({ _id: id }, { visit: res.visit + 1 });
      return { errcode: 0, errmsg: '', data: res };
    } catch (error) {
      throw error;
    }
  }
}

module.exports = ContentService;