// Forms.jsx — shared form delivery for every form on the site.
// Submissions are emailed to FORM_TO via FormSubmit (https://formsubmit.co):
// no backend, no account. ONE-TIME SETUP: the first submission triggers an
// activation email to FORM_TO; someone must click "Activate" in that email
// before deliveries start. Until then FormSubmit returns success but holds mail.
const FORM_TO = 'info@greysurface.com';
const FORM_ENDPOINT = `https://formsubmit.co/ajax/${FORM_TO}`;

// fields: plain object of name → value. subject: email subject line.
// Resolves on delivery, rejects with an Error on any failure.
async function submitToInbox(fields, { subject = 'Website form submission', page } = {}) {
  const payload = {
    ...fields,
    _subject: subject,
    _template: 'table',
    _captcha: 'false',
    page: page || (typeof location !== 'undefined' ? location.href : ''),
  };
  const res = await fetch(FORM_ENDPOINT, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
    body: JSON.stringify(payload),
  });
  let data = {};
  try { data = await res.json(); } catch (_) { /* non-JSON error body */ }
  if (!res.ok || String(data.success) !== 'true') {
    throw new Error(data.message || `Could not send (HTTP ${res.status})`);
  }
  return data;
}

// Read a <form> into { name: value }. Skips the honeypot so it never reaches the inbox.
function formToObject(form) {
  const out = {};
  new FormData(form).forEach((v, k) => { if (k !== '_honey') out[k] = typeof v === 'string' ? v.trim() : v; });
  return out;
}

// Spam trap: hidden field bots fill in. FormSubmit drops submissions where _honey is set.
const Honeypot = () => (
  <input type="text" name="_honey" tabIndex={-1} autoComplete="off" aria-hidden="true"
    style={{ position: 'absolute', left: -10000, top: 'auto', width: 1, height: 1, overflow: 'hidden' }} />
);

Object.assign(window, { FORM_TO, submitToInbox, formToObject, Honeypot });