const login = async (username, password) => {
  const response = await fetch('/api/auth');
  if (response.ok) return response.json();
  throw new Error('Authentication failed');
};

import { useState } from 'react';
function LoginForm() {
  const [loading, setLoading] = useState(false);
  const handleSubmit = (e) => {
    e.preventDefault();
    // validate & login...
  };
}

<template>
  <div class="login-wrapper">
    <form @submit="handleLogin">
      <input v-model="username" />
      <input v-model="password" type="password" />
    </form>
  </div>
</template>

class UserController {
  public function login() {
    $username = $_POST['username'];
    $password = $_POST['password'];
    if ($this->auth->verify($username, $password)) {
      return $this->success('登录成功');
    }
  }
}

SELECT u.id, u.username, u.avatar
FROM users u
WHERE u.status = 1
  AND u.username = :username
LIMIT 1;