import { useState } from 'react'
import { useRouter } from 'next/router'
import { signIn } from 'next-auth/react'

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

  const handleSubmit = async (e) => {
    e.preventDefault()
    setError('')
    setLoading(true)
    try {
      const result = await signIn('credentials', {
        redirect: false,
        callbackUrl: '/dashboard',
        username,
        password,
      })
      if (result.error) {
        setError(result.error)
      } else if (result.status === 'ok') {
        router.push('/dashboard')
      }
    } catch (err) {
      setError('Authentication error')
    } finally {
      setLoading(false)
    }
  }

  return (
    <div className="min-h-screen bg-gray-50 flex items-center justify-center">
      <div className="bg-white p-8 rounded-lg shadow-md w-96">
        <h2 className="text-2xl font-bold mb-6">Entrar - 1000Apps</h2>
        <form onSubmit={handleSubmit} className="space-y-4">
          <input
            type="text"
            placeholder="Nome de usuário"
            className="w-full p-2 border rounded"
            value={username}
            onChange={(e) => setUsername(e.target.value)}
            required
          />
          <input
            type="password"
            placeholder="Senha"
            className="w-full p-2 border rounded"
            value={password}
            onChange={(e) => setPassword(e.target.value)}
            required
          />
          <button
            type="submit"
            disabled={loading}
            className="w-full bg-blue-600 text-white py-2 rounded-lg disabled:opacity-50"
          >
            {loading ? 'Entrando...' : 'Entrar'}
          </button>
        </form>
        <p className="text-center mt-4 text-sm">
          Não tem conta?{' '}
          <a href="/signup" className="text-blue-600 hover:underline">
            Cadastrar
          </a>
        </p>
        {error && (
          <div className="mt-4 bg-red-100 text-red-700 p-3 rounded">
            {error}
          </div>
        )}
      </div>
    </div>
  )
}