/* HOA LedgerIQ — Frontend form handler + countdown */

// ── Dynamic Countdown ────────────────────────────────────
// Launch date = March 1, 2026 + 60 days = April 30, 2026
// On 3/1/2026 the banner shows "60 days", then counts down daily.
(function initCountdown() {
  const launchDate = new Date('2026-04-30T00:00:00');
  const now = new Date();
  const msPerDay = 1000 * 60 * 60 * 24;
  const daysLeft = Math.max(0, Math.ceil((launchDate - now) / msPerDay));

  const label = daysLeft === 1 ? 'Day' : 'Days';
  const text = daysLeft > 0
    ? `Launching in ${daysLeft} ${label}`
    : 'Now Live!';

  const bannerEl = document.getElementById('bannerCountdown');
  const signupEl = document.getElementById('signupCountdown');
  if (bannerEl) bannerEl.textContent = text;
  if (signupEl) signupEl.textContent = text;
})();

// ── Form Handler ─────────────────────────────────────────
document.addEventListener('DOMContentLoaded', () => {
  const form       = document.getElementById('signupForm');
  const submitBtn  = document.getElementById('submitBtn');
  const btnText    = submitBtn?.querySelector('.btn-text');
  const btnLoading = submitBtn?.querySelector('.btn-loading');
  const successDiv = document.getElementById('signupSuccess');

  if (!form) return;

  form.addEventListener('submit', async (e) => {
    e.preventDefault();

    const firstName = form.firstName.value.trim();
    const lastName  = form.lastName.value.trim();
    const email     = form.email.value.trim();

    const orgName = form.orgName?.value.trim() || '';
    const state   = form.state?.value || '';

    // Basic client-side validation
    if (!firstName || !lastName || !email || !orgName || !state) {
      highlightEmpty(form);
      return;
    }
    if (!isValidEmail(email)) {
      form.email.style.borderColor = '#ef4444';
      form.email.focus();
      return;
    }

    // Show loading state
    setLoading(true);

    const payload = {
      firstName,
      lastName,
      email,
      orgName:       form.orgName?.value.trim() || '',
      state:         form.state?.value || '',
      role:          form.role.value,
      unitCount:     form.unitCount.value,
      betaInterest:  form.betaInterest?.checked || false,
      source:        'landing_page',
      timestamp:     new Date().toISOString(),
    };

    try {
      const res = await fetch('/api/leads', {
        method:  'POST',
        headers: { 'Content-Type': 'application/json' },
        body:    JSON.stringify(payload),
      });

      if (res.ok) {
        showSuccess();
      } else {
        const data = await res.json().catch(() => ({}));
        if (res.status === 409) {
          // Already registered
          showSuccess('You\'re already on the list! We\'ll be in touch soon.');
        } else {
          alert(data.error || 'Something went wrong. Please try again.');
          setLoading(false);
        }
      }
    } catch (err) {
      // Network error — fall back to localStorage so we don't lose the lead
      saveLocally(payload);
      showSuccess();
    }
  });

  function setLoading(on) {
    if (!btnText || !btnLoading) return;
    submitBtn.disabled = on;
    btnText.classList.toggle('hidden', on);
    btnLoading.classList.toggle('hidden', !on);
  }

  function showSuccess(msg) {
    form.classList.add('hidden');
    if (msg && successDiv) {
      const p = successDiv.querySelector('p');
      if (p) p.textContent = msg;
    }
    successDiv?.classList.remove('hidden');
  }

  function highlightEmpty(f) {
    ['firstName', 'lastName', 'email', 'orgName', 'state'].forEach(name => {
      const el = f[name];
      if (el && !el.value.trim()) {
        el.style.borderColor = '#ef4444';
        el.addEventListener('input', () => { el.style.borderColor = ''; }, { once: true });
        el.addEventListener('change', () => { el.style.borderColor = ''; }, { once: true });
      }
    });
  }

  function isValidEmail(email) {
    return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email);
  }

  function saveLocally(payload) {
    try {
      const existing = JSON.parse(localStorage.getItem('hoa_leads') || '[]');
      existing.push(payload);
      localStorage.setItem('hoa_leads', JSON.stringify(existing));
    } catch (_) { /* best-effort */ }
  }
});