'use client'

import { useState } from 'react'
import { useRouter } from 'next/navigation'

const API_BASE = process.env.NEXT_PUBLIC_API_BASE_URL || 'http://localhost:8000'

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

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

    try {
      const res = await fetch(
        `${API_BASE}/api/v1/admin/login?username=${username}&password=${password}`,
        { method: 'POST' }
      )
      if (!res.ok) {
        throw new Error('登录失败')
      }
      const data = await res.json()
      localStorage.setItem('admin_token', data.token)
      router.push('/admin')
    } catch {
      setError('用户名或密码错误')
    }
  }

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-100">
      <div className="bg-white p-8 rounded shadow-md w-96">
        <h1 className="text-2xl font-bold mb-6 text-center">管理员登录</h1>

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

        <form onSubmit={handleLogin}>
          <div className="mb-4">
            <label className="block text-sm font-medium mb-1">用户名</label>
            <input
              type="text"
              value={username}
              onChange={(e) => setUsername(e.target.value)}
              className="w-full p-2 border rounded"
            />
          </div>

          <div className="mb-6">
            <label className="block text-sm font-medium mb-1">密码</label>
            <input
              type="password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              className="w-full p-2 border rounded"
            />
          </div>

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