Todo/app/auth/error/page.tsx

'use client'

import { useSearchParams } from 'next/navigation'
import Link from 'next/link'
import { Suspense } from 'react'

function ErrorContent() {
  const searchParams = useSearchParams()
  const error = searchParams.get('error')

  const getErrorMessage = (errorCode: string | null) => {
    switch (errorCode) {
      case 'Configuration':
        return 'There is a problem with the server configuration.'
      case 'AccessDenied':
        return 'You do not have permission to sign in.'
      case 'Verification':
        return 'The verification token has expired or has already been used.'
      case 'OAuthSignin':
        return 'Error in constructing an authorization URL.'
      case 'OAuthCallback':
        return 'Error in handling the response from an OAuth provider.'
      case 'OAuthCreateAccount':
        return 'Could not create OAuth provider user in the database.'
      case 'EmailCreateAccount':
        return 'Could not create email provider user in the database.'
      case 'Callback':
        return 'Error in the OAuth callback handler route.'
      case 'OAuthAccountNotLinked':
        return 'Email on the account is already linked, but not with this OAuth account.'
      case 'EmailSignin':
        return 'Sending the email with the verification token failed.'
      case 'CredentialsSignin':
        return 'Invalid email or password. Please check your credentials and try again.'
      case 'SessionRequired':
        return 'Please sign in to access this page.'
      default:
        return 'An authentication error occurred. Please try again.'
    }
  }

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50 px-4 py-12">
      <div className="max-w-md w-full space-y-8">
        <div className="text-center">
          <div className="mx-auto h-16 w-16 flex items-center justify-center rounded-full bg-red-100 mb-4">
            <svg
              className="h-8 w-8 text-red-600"
              fill="none"
              viewBox="0 0 24 24"
              stroke="currentColor"
              aria-hidden="true"
            >
              <path
                strokeLinecap="round"
                strokeLinejoin="round"
                strokeWidth={2}
                d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"
              />
            </svg>
          </div>
          <h1 className="text-3xl sm:text-4xl font-bold text-gray-900 mb-2">
            Authentication Error
          </h1>
          <p className="text-sm sm:text-base text-gray-600 mb-8">
            {getErrorMessage(error)}
          </p>
        </div>

        <div className="bg-white rounded-xl shadow-md p-6 sm:p-8">
          <div className="space-y-4">
            <Link
              href="/auth/login"
              className="block w-full px-4 py-3 bg-blue-500 hover:bg-blue-600 active:bg-blue-700 text-white rounded-lg transition-colors text-center font-medium text-sm sm:text-base"
            >
              Try Logging In Again
            </Link>
            <Link
              href="/auth/register"
              className="block w-full px-4 py-3 bg-gray-100 hover:bg-gray-200 active:bg-gray-300 text-gray-700 rounded-lg transition-colors text-center font-medium text-sm sm:text-base"
            >
              Create New Account
            </Link>
          </div>

          {error && (
            <div className="mt-6 p-4 bg-gray-50 rounded-lg">
              <p className="text-xs text-gray-500">
                Error code: <code className="font-mono">{error}</code>
              </p>
            </div>
          )}
        </div>
      </div>
    </div>
  )
}

export default function AuthErrorPage() {
  return (
    <Suspense fallback={
      <div className="min-h-screen flex items-center justify-center bg-gray-50">
        <div className="text-gray-600">Loading...</div>
      </div>
    }>
      <ErrorContent />
    </Suspense>
  )
}