(function(){
  // Copy-to-clipboard for code blocks
  function setupCopyButtons(){
    document.querySelectorAll('[data-copy-target]').forEach(function(btn){
      btn.addEventListener('click', async function(){
        var sel = btn.getAttribute('data-copy-target');
        var el = document.querySelector(sel);
        if(!el) return;
        var text = el.innerText || el.textContent || '';
        try{
          await navigator.clipboard.writeText(text.trim());
          var old = btn.innerHTML;
          btn.innerHTML = 'Copied';
          btn.classList.add('btn-success');
          btn.classList.remove('btn-outline-secondary');
          setTimeout(function(){
            btn.innerHTML = old;
            btn.classList.remove('btn-success');
            btn.classList.add('btn-outline-secondary');
          }, 1200);
        }catch(e){
          // Fallback
          var ta = document.createElement('textarea');
          ta.value = text.trim();
          document.body.appendChild(ta);
          ta.select();
          try{ document.execCommand('copy'); }catch(_){}
          document.body.removeChild(ta);
        }
      });
    });
  }

  // Asciinema embed helper:
  // Put <div class="asciicast" data-asciinema-id="12345"></div>
  // Or provide a self-hosted player by swapping the script URL.
  function setupAsciinema(){
    document.querySelectorAll('.asciicast[data-asciinema-id]').forEach(function(el){
      var id = el.getAttribute('data-asciinema-id');
      if(!id || id === 'REPLACE_ME'){
        el.innerHTML = '<div class="alert alert-warning mb-0">Add your asciinema id here: <code>data-asciinema-id</code>.</div>';
        return;
      }
      // Avoid injecting twice
      if(document.getElementById('asciinema-embed-'+id)) return;

      var s = document.createElement('script');
      s.src = 'https://asciinema.org/a/' + encodeURIComponent(id) + '.js';
      s.id = 'asciinema-embed-'+id;
      s.async = true;
      // The script replaces a placeholder div with the player if it's directly after it.
      el.appendChild(s);
    });
  }

  document.addEventListener('DOMContentLoaded', function(){
    setupCopyButtons();
    setupAsciinema();
  });
})();