3-4:实现登录的校验逻辑

1.创建sign-in.dto.ts

同样的，定义sign-in的数据类型：

import { IsEmail, IsString, MinLength } from 'class-validator';

export class SignInDto {
  @IsEmail()
  email: string;

  @IsString()
  @MinLength(6)
  password: string;
}

2.在auth.service.ts中实现登录的逻辑

async signIn(email: string, pass: string): Promise<any> {
    const user = await this.usersService.findOne(email);
    if (!user) {
      throw new NotFoundException('User not found');
    }
    const isPasswordValid = await bcrypt.compare(pass, user.password);
    if (!isPasswordValid) {
      throw new UnauthorizedException('Invalid credentials');
    }
    const { password, ...result } = user;
    return result;
  }

注意，同样的这里最后的返回值应当是jwt鉴权后的token，这里暂且搁置。

3.在auth.controller.ts中将路由和登录逻辑匹配

  @Post('login')
  SignIn(@Body() signInDto: SignInDto) {
    return this.authService.signIn(signInDto.email, signInDto.password);
  }