'use client'

import { useState } from 'react'
import { useTranslations } from 'next-intl'
import { Turnstile } from '@/components/Turnstile'

const ERROR_KEYS = ['invalidEmail', 'captchaFailed'] as const
const SITE_KEY = process.env.NEXT_PUBLIC_TURNSTILE_SITE_KEY

export function RecoverForm() {
  const t = useTranslations('Recover')
  const [type, setType] = useState('password')
  const [email, setEmail] = useState('')
  const [captcha, setCaptcha] = useState('')
  const [busy, setBusy] = useState(false)
  const [message, setMessage] = useState<{ ok: boolean; text: string } | null>(null)

  async function handleSubmit(e: React.FormEvent) {
    e.preventDefault()
    if (busy) return
    setBusy(true)
    setMessage(null)
    try {
      const res = await fetch('/api/auth/recover', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ type, email: email.trim(), turnstileToken: captcha }),
      })
      const data: { success?: boolean; error?: string } = await res.json()
      if (data.success) setMessage({ ok: true, text: t('success') })
      else {
        const key = (ERROR_KEYS as readonly string[]).includes(data.error ?? '') ? data.error! : 'genericError'
        setMessage({ ok: false, text: t(key) })
      }
    } catch {
      setMessage({ ok: false, text: t('genericError') })
    } finally {
      setBusy(false)
    }
  }

  return (
    <>
      <form onSubmit={handleSubmit} acceptCharset="utf-8">
        <table className="middle-center-table">
          <tbody>
            <tr>
              <td>
                <select value={type} onChange={(e) => setType(e.target.value)}>
                  <option value="password">{t('typePassword')}</option>
                  <option value="accountname">{t('typeAccountName')}</option>
                  <option value="activation">{t('typeActivation')}</option>
                </select>
              </td>
            </tr>
            <tr>
              <td>
                <input type="email" maxLength={320} placeholder={t('email')} required value={email} onChange={(e) => setEmail(e.target.value)} />
              </td>
            </tr>
            <tr>
              <td>
                <Turnstile onVerify={setCaptcha} />
              </td>
            </tr>
            <tr>
              <td>
                <button type="submit" className="recover-button" disabled={busy || (!!SITE_KEY && !captcha)}>
                  {busy ? t('sending') : t('submit')}
                </button>
              </td>
            </tr>
          </tbody>
        </table>
      </form>
      <hr />
      <div className="alert-message" style={{ display: message ? 'block' : 'none' }}>
        {message && (
          <span className={message.ok ? 'ok-form-response' : 'red-form-response'}>{message.text}</span>
        )}
      </div>
    </>
  )
}
