'use client'

import { useState, useEffect, Suspense } from 'react'
import { useRouter, useSearchParams } from 'next/navigation'
import Link from 'next/link'

function AdminLoginForm() {
  const [password, setPassword] = useState('')
  const [isLoading, setIsLoading] = useState(false)
  const [error, setError] = useState('')
  const [isMounted, setIsMounted] = useState(false)
  const router = useRouter()
  const searchParams = useSearchParams()
  const redirect = searchParams.get('redirect') || '/admin/dashboard'

  useEffect(() => {
    setIsMounted(true)
  }, [])

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

    try {
      const response = await fetch('/api/admin/login', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({ password }),
      })

      const data = await response.json()

      if (response.ok) {
        router.push(redirect)
      } else {
        setError(data.message || 'Login failed')
      }
    } catch (error) {
      setError('Network error. Please try again.')
    } finally {
      setIsLoading(false)
    }
  }

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50 py-12 px-4 sm:px-6 lg:px-8">
      <div className="max-w-md w-full space-y-8">
        <div>
          <h2 className="mt-6 text-center text-3xl font-extrabold text-gray-900">
            Адмін панель
          </h2>
          <p className="mt-2 text-center text-sm text-gray-600">
            Введіть пароль для входу в систему управління
          </p>
        </div>
        <form className="mt-8 space-y-6" onSubmit={handleSubmit}>
          <div>
            <label htmlFor="password" className="sr-only">
              Пароль
            </label>
            <input
              id="password"
              name="password"
              type="password"
              autoComplete="current-password"
              required
              className="appearance-none rounded-md relative block w-full px-3 py-2 border border-gray-300 placeholder-gray-500 text-gray-900 focus:outline-none focus:ring-primary-500 focus:border-primary-500 focus:z-10 sm:text-sm"
              placeholder="Введіть пароль"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
            />
          </div>

          {error && (
            <div className="rounded-md bg-red-50 p-4">
              <div className="text-sm text-red-700">{error}</div>
            </div>
          )}

          <div>
            <button
              type="submit"
              disabled={isLoading}
              className="group relative w-full flex justify-center py-2 px-4 border border-transparent text-sm font-medium rounded-md text-white bg-primary-900 hover:bg-primary-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-primary-500 disabled:opacity-50 disabled:cursor-not-allowed"
            >
              {isLoading ? 'Вхід...' : 'Увійти'}
            </button>
          </div>

          <div className="text-center">
            <Link
              href="/"
              className="text-sm text-primary-600 hover:text-primary-500"
            >
              ← Повернутися на сайт
            </Link>
          </div>
        </form>
      </div>
    </div>
  )
}

export default function AdminLoginPage() {
  return (
    <Suspense fallback={<div>Loading...</div>}>
      <AdminLoginForm />
    </Suspense>
  )
}