'use strict';

const assert = require('assert');
const { ObjectId } = require('mongoose').Types;
const { CrudService } = require('naf-framework-mongoose/lib/service');
const { BusinessError, ErrorCode } = require('naf-core').Error;
const jwt = require('jsonwebtoken');
const uuid = require('uuid');

class LoginService extends CrudService {
  constructor(ctx) {
    super(ctx, 'login');
    this.model = this.ctx.model.User;
  }

  // 用户登录
  async login(data) {
    const { mobile, password } = data;
    // 根据用户输入的手机号查询其他用户表中是否存在相应数据
    const user = await this.model.findOne({ mobile }, '+password');
    if (!user) {
      throw new BusinessError(ErrorCode.USER_NOT_EXIST);
    }
    if (user.password.secret !== password) {
      throw new BusinessError(ErrorCode.USER_NOT_EXIST);
    }
    // 取出用户的类型，根据用户类型返回相应信息
    const state = uuid();
    const key = `free:auth:state:${state}`;
    const token = await this.createJwt(user);
    await this.app.redis.set(key, token, 'EX', 60 * 60 * 24);
    return { key };
  }

  // 创建登录Token
  async createJwt({ id, name, mobile, dept_id, gender, remark }) {
    const { secret, expiresIn = '1d' } = this.config.jwt;
    const subject = mobile;
    const res = { uid: id, name, mobile, dept_id, gender, remark };
    const token = await jwt.sign(res, secret, { expiresIn, subject });
    return token;
  }

  // 创建密码
  async createJwtPwd(password) {
    const { secret } = this.config.jwt;
    const token = await jwt.sign(password, secret);
    return token;
  }

  // 取得redis内token信息
  async token({ key }) {
    assert(key, 'key不能为空');
    const token = await this.app.redis.get(key);
    if (!token) {
      throw new BusinessError(ErrorCode.SERVICE_FAULT, 'token已经过期');
    }
    return { token };
  }

  // 删除操作
  async destroy({ key }) {
    const res = await this.app.redis.del(key);
    return res;
  }
}
module.exports = LoginService;