const bcrypt = require('bcryptjs');
const jwt = require('jsonwebtoken');
const {
  promisify
} = require('util');
/**
 * 用户业务操作
 */
const config = require('./../config.js');
const validator = require('validator')
const userModel = require('./../models/user-info')
const userCode = require('./../codes/user')

const user = {

  /**
   * 创建用户
   * @param  {object} user 用户信息
   * @return {object}      创建结果
   */
  async create(user) {
    let salt = await promisify(bcrypt.genSalt)(10);
    let pwd = await promisify(bcrypt.hash)(user.password, salt);
    user.password = pwd;
    let result = await userModel.create(user)
    return result
  },
  /**
   * 更新用户
   * @param  {object} user 用户信息
   * @return {object}      创建结果
   */
  async update(user, id) {
    let data = {
      ...user,
      modifiedTime: new Date().getTime()
    }
    // /不能修改用户名
    delete data.username;
    // 不能修改邮箱
    delete data.email;
    let resultData = await userModel.update(data, id)
    return resultData
  },
  /**
   * 查找存在用户信息
   * @param  {object} formData 查找的表单数据
   * @return {object|null}      查找结果
   */
  async getExistOne(formData) {
    let resultData = await userModel.getExistOne({
      'email': formData.email,
      'username': formData.username
    })
    return resultData
  },
  /**
   * 根据ID查找存在用户信息
   * @param  {object} formData 查找的表单数据
   * @return {object|null}      查找结果
   */
  async getExistOneByIdOrUserName(formData) {
    let resultData = await userModel.getExistOneByIdOrUserName({
      'id': formData.id
    })
    if (resultData) {
      return resultData[0];
    }
    return resultData
  },


  /**
   * 登录Token获取
   * @param  {object} formData 登录表单信息
   * @return {object}          登录业务操作结果
   */
  async validatorPwd(formData, rowData) {
    let token = '';
    let isSame = await promisify(bcrypt.compare)(formData.password, rowData.password);
    if (isSame) {
      // 1小时的登录时间
      token = jwt.sign({
        id: rowData.id,
        username: rowData.username,
      }, config.share_key, {
        expiresIn: '1h'
      });
      token = 'Bearer ' + token;
    }
    return token
  },


  /**
   * 根据用户名查找用户业务操作
   * @param  {string} userName 用户名
   * @return {object|null}     查找结果
   */
  async getUserInfoByUserName(userName) {

    let resultData = await userModel.getUserInfoByUserName(userName) || {}
    // let userInfo = {
    //   // id: resultData.id,
    //   email: resultData.email,
    //   username: resultData.username,
    //   detailInfo: resultData.detail_info,
    //   createTime: resultData.create_time
    // }
    return resultData
  },


  /**
   * 检验用户注册数据
   * @param  {object} userInfo 用户注册数据
   * @return {object}          校验结果
   */
  validatorSignUp(userInfo) {
    let result = {
      success: false,
      message: '',
      data: null
    }
    if (/^[a-z0-9\_\-]{6,16}$/.test(userInfo.username || '') === false) {
      result.message = userCode.ERROR_USER_NAME
      return result
    }
    if (userInfo.email && !validator.isEmail(userInfo.email)) {
      ;
      result.message = userCode.ERROR_EMAIL
      return result
    }
    if (!/[\w+]{6,16}/.test(userInfo.password || '')) {
      result.message = userCode.ERROR_PASSWORD
      return result
    }
    if (userInfo.password !== userInfo.confirmPassword) {
      result.message = userCode.ERROR_PASSWORD_CONFORM
      return result
    }

    result.success = true
    return result
  },
  /**
   * 检验用户必须的数据
   * @param  {object} userInfo 用户数据
   * @return {object}          校验结果
   */
  validatorNeed(userInfo, needPwd = true) {
    let result = {
      success: false,
      message: '',
    }
    if (!userInfo.username && !userInfo.email) {
      result.success = false;
      result.message = '用户名或者邮箱不能为空'
      return result
    }
    if (userInfo.email && !validator.isEmail(userInfo.email)) {
      result.success = false;
      result.message = userCode.ERROR_EMAIL
      return result
    }
    if (needPwd && !userInfo.password) {
      result.success = false;
      result.message = '密码不能为空'
      return result
    }
    result.success = true
    return result
  }
}

module.exports = user