package com.example.attendance.service.impl;

import com.example.attendance.mapper.TeacherMapper;
import com.example.attendance.entity.Teacher;
import com.example.attendance.service.TeacherService;
import com.example.attendance.util.JWTUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

@Service
public class TeacherServiceImpl implements TeacherService {

    @Autowired
    private TeacherMapper teacherMapper;

    @Autowired
    private PasswordEncoder passwordEncoder; // 使用 PasswordEncoder 接口

    @Override
    public void register(String username, String password) {
        Teacher teacher = new Teacher();
        teacher.setUsername(username);
        teacher.setPassword(passwordEncoder.encode(password));  // 密码加密
        teacherMapper.save(teacher);
    }

    @Override
    public String login(String username, String password) {
        Teacher teacher = teacherMapper.findByUsername(username);
        if (teacher == null || !passwordEncoder.matches(password, teacher.getPassword())) {
            throw new RuntimeException("用户名或密码不正确");
        }
        // 返回 JWT token
        return JWTUtil.generateToken(teacher);
    }
}