{{- /* dedinit() typewriter: animated topics inside logo parens.
       Pure JS + CSS, no Alpine. Progressive enhancement — no-JS keeps
       the plain "dedinit()" logo. Words configurable via hugo.toml:
       [params.typewriter] words = ["linux", "llm", "politics"] */ -}}
{{- $tw_words := site.Params.typewriter.words | default (slice "linux" "llm" "politics" "homelab" "nix") -}}
<script>
(() => {
  const LOGO_SEL = 'header .logo a, .logo a';
  const queue = [() => {
    const a = document.querySelector(LOGO_SEL);
    if (!a || a.dataset.twDone) return;
    a.dataset.twDone = '1';
    const text = a.textContent.trim();
    const open = text.lastIndexOf('(');
    const close = text.lastIndexOf(')');
    if (open < 0 || close < open) return;
    const words = {{ $tw_words | jsonify | safeJS }};
    const box = document.createElement('span');
    box.id = 'dedinit-typewriter';
    box.className = 'tw';
    box.textContent = '';
    box.appendChild(Object.assign(document.createElement('span'), { className: 'tw-cursor' }));
    // rebuild: <prefix>(<typewriter>)<suffix>
    a.textContent = '';
    a.appendChild(document.createTextNode(text.slice(0, open + 1)));
    a.appendChild(box);
    a.appendChild(document.createTextNode(text.slice(close)));

    // reduced motion: static first word, no animation
    if (matchMedia('(prefers-reduced-motion: reduce)').matches) {
      box.firstChild.before(document.createTextNode(words[0] || ''));
      box.querySelector('.tw-cursor').style.display = 'none';
      return;
    }

    const TYPE = 90, ERASE = 50, HOLD = 1400, GAP = 400;
    let w = 0, i = 0, dir = 1;
    box.querySelector('.tw-cursor').style.display = 'inline-block';
    const tick = () => {
      const word = words[w];
      // keep cursor as the last child; typed text goes before it
      box.replaceChildren(document.createTextNode(word.slice(0, i)), box.querySelector('.tw-cursor'));
      let delay;
      if (dir === 1) {
        if (i < word.length) { i++; delay = TYPE; }
        else { dir = -1; delay = HOLD; }
      } else {
        if (i > 0) { i--; delay = ERASE; }
        else { dir = 1; w = (w + 1) % words.length; delay = GAP; }
      }
      setTimeout(tick, delay);
    };
    tick();
  }];
  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', () => queue.shift()());
  else queue.shift()();
})();
</script>