usage.js

// Executed inside Gradio's load hook. No cookies, IDs, dataset names or card content
// leave the page. Clipboard text is used locally and never sent as telemetry.
if (!window.kalanosUsage) {
  const enabled = location.origin === 'https://kalanosdev-lerobot-grader.hf.space';
  const emit = (event) => {
    if (!enabled) return;
    fetch('https://hub.kalanos.ai/api/events/hf-space', {
      method: 'POST', credentials: 'omit', referrerPolicy: 'no-referrer',
      headers: {'Content-Type': 'text/plain'}, body: JSON.stringify({event}), keepalive: true
    }).catch(() => {});
  };
  const copy = async (text, button, status) => {
    if (!text) return;
    try {
      await navigator.clipboard.writeText(text);
      emit('hf_card_copied');
      if (status) status.textContent = 'Copied';
      if (button) { button.title = 'Copied'; button.setAttribute('aria-label', 'Copied'); }
    } catch {
      if (status) status.textContent = 'Clipboard unavailable. Select the Markdown and copy manually.';
      if (button) { button.title = 'Copy unavailable — select the Markdown and copy manually'; button.setAttribute('aria-label', button.title); }
    }
  };
  window.kalanosUsage = {emit, copy};
  emit('hf_space_viewed');
  document.addEventListener('toggle', (e) => {
    if (e.target.matches?.('details.k-hf-card') && e.target.open) emit('hf_card_previewed');
  }, true);
  document.addEventListener('click', (e) => {
    const button = e.target.closest?.('.k-copy-card');
    if (button) {
      const panel = button.closest('.k-hf-card');
      copy(panel.querySelector('textarea').value, button, panel.querySelector('.k-copy-status'));
    }
    const link = e.target.closest?.('.k-card a[href]');
    if (link) {
      const url = new URL(link.href);
      if (url.origin === 'https://hub.kalanos.ai' && url.pathname.startsWith('/d/')) emit('hf_report_opened');
    }
  });
  document.addEventListener('copy', (e) => {
    const input = e.target.closest?.('.k-hf-card textarea');
    if (input && input.selectionStart !== input.selectionEnd && !e.defaultPrevented) emit('hf_card_copied');
  });
}