'use strict';
const { CrudService } = require('naf-framework-mongoose-free/lib/service');
const { BusinessError, ErrorCode } = require('naf-core').Error;
const _ = require('lodash');
const d = require('diskinfo');
const fs = require('fs');
const path = require('path');
const moment = require('moment');
const nodemailer = require('nodemailer');
//
class DiskService extends CrudService {
  constructor(ctx) {
    super(ctx, 'disk');
  }

  async diskInfo() {
    const res = await this.ctx.service.util.getDrives();
    return res;
  }
  async toDir({ route = [ '' ] } = {}) {
    const root = this.app.config.dirRoot;
    const p = path.resolve(root, ...route);
    const dir = fs.readdirSync(p);
    const arr = [];
    for (const file of dir) {
      const fp = path.resolve(p, file);
      const fi = fs.statSync(fp);
      const obj = { name: file };
      if (fi.isDirectory()) obj.type = 'dir';
      else if (fi.isFile()) obj.type = 'file';
      else obj.type = undefined;
      // 文件大小, kb
      obj.size = fi.size / 100;
      // 创建时间
      obj.create_time = moment(fi.ctime).format('YYYY-MM-DD HH:mm:ss');
      arr.push(obj);
    }
    return arr;
  }

  async delFile({ route, target, times }) {
    if (!_.isArray(route)) throw new BusinessError(ErrorCode.BADPARAM, '路径错误');
    const root = this.app.config.dirRoot;
    const p = path.resolve(root, ...route, target || '');
    if (fs.statSync(p).isFile()) {
      if (_.get(times, 'start_time') && _.get(times, 'end_time')) {
        const r = this.inRange(moment(fs.statSync(p).ctime).format('YYYY-MM-DD HH:mm:ss'), times);
        if (!r) return;
      }
      fs.unlinkSync(p);
    } else await this.dirDelete(p, times);
  }
  /**
   * 删除路径下的所有内容
   * @param {String} filePath 路径
   * @param {Object} times 里面有开始时间和结束时间: start_time;end_time
   */
  async dirDelete(filePath, times) {
    if (fs.existsSync(filePath)) {
      const files = fs.readdirSync(filePath);
      if (files.length > 0 && !times) throw new BusinessError(ErrorCode.SERVICE_FAULT, '该目录有文件');

      for (const file of files) {
        const curPath = path.resolve(filePath, file);
        const fi = fs.statSync(curPath);
        if (fi.isDirectory()) {
          // recurse
          this.dirDelete(curPath);
        } else {
          // delete file
          if (_.get(times, 'start_time') && _.get(times, 'end_time')) {
            const r = this.inRange(moment(fi.ctime).format('YYYY-MM-DD HH:mm:ss'), times);
            if (!r) continue;
          }
          fs.unlinkSync(curPath);
        }
      }
      if (!(_.get(times, 'start_time') && _.get(times, 'end_time'))) fs.rmdirSync(filePath);
    }
  }

  /**
   * 判断时间是否在范围内
   * @param {String} create_time 文件的时间范围
   * @param {Object} times 里面有开始时间和结束时间: start_time;end_time
   */
  inRange(create_time, times) {
    console.log(moment(create_time).isBetween(times.start_time, times.end_time, null, '[]'));
    return moment(create_time).isBetween(times.start_time, times.end_time, null, '[]');
  }

  async sendWarningEmail() {
    const { receiver, sender } = this.app.config;
    if (!receiver) return;
    if (!sender) return;
    const config = {
      host: 'smtp.163.com',
      port: 465,
      secure: true,
      auth: sender,
    };
    const mailOptions = {
      from: `"free服务器" <${sender.user}>`, // 邮件来源
      to: receiver, // 邮件发送到哪里，多个邮箱使用逗号隔开
      subject: 'free服务器提示', // 邮件主题
      text: '项目空间不足', // 存文本类型的邮件正文
      html: '<b>清理科企项目空间啦!!</b>', // html类型的邮件正文
    };
    const transporter = nodemailer.createTransport(config);
    transporter.sendMail(mailOptions, (error, info) => {
      if (error) console.log(error);
      else console.log(info);
    });

  }
}

module.exports = DiskService;