// app/login/page.tsx
'use client';

import { useState } from 'react';
import { useRouter } from 'next/navigation';
import { COOKIE_NAME, COOKIE_MAX_AGE } from '@/lib/constants';

export default function LoginPage() {
  const router = useRouter();
  const [username, setUsername] = useState('');
  const [password, setPassword] = useState('');
  const [error, setError] = useState('');

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setError('');

    // 这里应该调用 API 验证，简化起见直接比对
    // 实际项目中应该使用 API route 进行验证
    const response = await fetch('/api/login', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ username, password }),
    });

    if (response.ok) {
      router.push('/download');
    } else {
      setError('用户名或密码错误');
    }
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50">
      <div className="max-w-md w-full bg-white rounded-lg shadow-md p-8">
        <h1 className="text-2xl font-bold text-center mb-6">资源下载</h1>
        <h2 className="text-lg text-gray-600 text-center mb-6">登录</h2>

        {error && (
          <div className="bg-red-50 text-red-600 px-4 py-3 rounded mb-4">
            {error}
          </div>
        )}

        <form onSubmit={handleSubmit} className="space-y-4">
          <div>
            <label htmlFor="username" className="block text-sm font-medium text-gray-700 mb-2">
              用户名
            </label>
            <input
              type="text"
              id="username"
              value={username}
              onChange={(e) => setUsername(e.target.value)}
              className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
              required
            />
          </div>

          <div>
            <label htmlFor="password" className="block text-sm font-medium text-gray-700 mb-2">
              密码
            </label>
            <input
              type="password"
              id="password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
              required
            />
          </div>

          <button
            type="submit"
            className="w-full bg-blue-600 text-white py-2 px-4 rounded-md hover:bg-blue-700 transition-colors"
          >
            登录
          </button>
        </form>
      </div>
    </div>
  );
}