/* Draw legacy control glyphs only in Glass; restore them on theme changes. */
(function(root) {
  'use strict';
  const paths = {
    add:'<path d="M12 5v14M5 12h14"/>', close:'<path d="m6 6 12 12M18 6 6 18"/>',
    search:'<circle cx="10.5" cy="10.5" r="6.5"/><path d="m16 16 5 5"/>',
    save:'<path d="M12 3v12m-5-5 5 5 5-5M4 17v4h16v-4"/>',
    play:'<path d="m8 5 11 7-11 7z"/>', pause:'<path d="M8 5v14M16 5v14"/>',
    next:'<path d="m5 5 10 7-10 7zM19 5v14"/>', previous:'<path d="m19 5-10 7 10 7zM5 5v14"/>',
    repeat:'<path d="m17 2 4 4-4 4M3 11V8a2 2 0 0 1 2-2h16M7 22l-4-4 4-4m14-1v3a2 2 0 0 1-2 2H3"/>',
    edit:'<path d="m14 5 5 5M4 20l5-1L21 7l-4-4L5 15z"/>',
    lyrics:'<rect x="9" y="3" width="6" height="11" rx="3"/><path d="M5 10v2a7 7 0 0 0 14 0v-2M12 19v3M8 22h8"/>',
    share:'<path d="M12 16V3m-4 4 4-4 4 4M5 12v9h14v-9"/>',
    copy:'<rect x="8" y="8" width="12" height="13" rx="2"/><path d="M16 8V3H3v13h5"/>',
    check:'<path d="m5 12 4 4L19 6"/>', folder:'<path d="M3 7V5h7l2 3h9v12H3z"/>',
    settings:'<path d="M4 6h16M4 12h16M4 18h16"/><circle cx="8" cy="6" r="2"/><circle cx="16" cy="12" r="2"/><circle cx="10" cy="18" r="2"/>',
    chapters:'<rect x="4" y="3" width="16" height="18" rx="2"/><path d="M8 7h8M8 12h8M8 17h5"/>',
    clock:'<circle cx="12" cy="12" r="9"/><path d="M12 7v5l3 2"/>',
    shuffle:'<path d="m18 3 3 3-3 3M3 6h3c5 0 7 12 12 12h3m-3-3 3 3-3 3M3 18h3c2 0 4-3 6-6s4-6 6-6h3"/>',
    down:'<path d="m6 9 6 6 6-6"/>', right:'<path d="m9 6 6 6-6 6"/>', back:'<path d="M20 12H4m6-6-6 6 6 6"/>', more:'<circle cx="5" cy="12" r="1"/><circle cx="12" cy="12" r="1"/><circle cx="19" cy="12" r="1"/>',
    devices:'<rect x="3" y="4" width="14" height="12" rx="2"/><path d="M7 20h6M10 16v4"/><rect x="17" y="10" width="5" height="11" rx="1"/>'
  };
  const glyphs = {'＋':'add','✕':'close','×':'close','✖':'close','🔍':'search','🔎':'search','⬇':'save','⤓':'save','💾':'save','▶':'play','⏸':'pause','⏭':'next','⏮':'previous','↻':'repeat','↺':'repeat','✎':'edit','✏':'edit','📝':'edit','🎤':'lyrics','↗':'share','⧉':'copy','✓':'check','📁':'folder','⚙':'settings','📋':'chapters','🕘':'clock','🔀':'shuffle','📡':'devices','▾':'down','▸':'right','←':'back','⋯':'more'};
  function leadingGlyph(text) {
    const prefix = text.match(/^\s*/)[0], rest = text.slice(prefix.length);
    const glyph = Object.keys(glyphs).find(key => rest.startsWith(key));
    if (!glyph) return null;
    const length = glyph.length + (rest[glyph.length] === '\uFE0F' ? 1 : 0);
    return { kind:glyphs[glyph], original:prefix+rest.slice(0,length), rest:rest.slice(length) };
  }
  function mount(doc) {
    const decorations = new Set(); let scheduled=false;
    const selector = '#listPane button, .sidebar button, .smart-item .pl-name, .notes-tab, .notes-fold, .mini-btn';
    const svg = kind => { const icon=doc.createElementNS('http://www.w3.org/2000/svg','svg'); icon.setAttribute('viewBox','0 0 24 24');icon.setAttribute('aria-hidden','true');icon.classList.add('glass-control-icon');icon.innerHTML=paths[kind];return icon; };
    const observer=new root.MutationObserver(schedule), themeObserver=new root.MutationObserver(schedule);
    function restore(record) {
      record.svg.remove(); if(record.original.isConnected)record.original.replaceWith(doc.createTextNode(record.original.textContent));
      if(record.addedLabel && record.parent.isConnected)record.parent.removeAttribute('aria-label');
    }
    function paint() {
      scheduled=false;observer.disconnect();
      const active=doc.documentElement.dataset.layout==='glass-stage';
      for(const record of decorations)if(!active || !record.svg.isConnected){restore(record);decorations.delete(record);}
      if(active) for(const parent of doc.querySelectorAll(selector)) {
        // Existing SVGs already express the action; only legacy glyphs change.
        if(parent.querySelector('svg:not(.glass-control-icon),.legacy-nav-icon'))continue;
        for(const node of [...parent.childNodes]) {
          if(node.nodeType!==3)continue;const match=leadingGlyph(node.textContent);if(!match)continue;
          const icon=svg(match.kind), original=doc.createElement('span'); original.className='glass-original-glyph';original.textContent=match.original;
          node.textContent=match.rest;parent.insertBefore(icon,node);parent.insertBefore(original,node);
          const addedLabel=parent.tagName==='BUTTON'&&!parent.hasAttribute('aria-label')&&!parent.textContent.replace(match.original,'').trim();
          if(addedLabel)parent.setAttribute('aria-label',parent.title || ({play:'Play',pause:'Pause',close:'Close',add:'Add',save:'Save'}[match.kind] || match.kind));
          decorations.add({parent,svg:icon,original,addedLabel});break;
        }
        if(parent.matches('.notes-tab')&&!parent.querySelector('svg')&&paths[parent.dataset.tab==='markers'?'chapters':parent.dataset.tab]) {
          const kind=parent.dataset.tab==='markers'?'chapters':parent.dataset.tab,icon=svg(kind);parent.prepend(icon);
          const original=doc.createElement('span');decorations.add({parent,svg:icon,original,addedLabel:false});
        }
      }
      if(active)observer.observe(doc.body,{childList:true,subtree:true,characterData:true});
    }
    function schedule(){if(!scheduled){scheduled=true;root.queueMicrotask(paint);}}
    themeObserver.observe(doc.documentElement,{attributes:true,attributeFilter:['data-layout']});paint();
    return ()=>{observer.disconnect();themeObserver.disconnect();for(const record of decorations)restore(record);};
  }
  if(typeof module!=='undefined')module.exports={leadingGlyph,paths};
  else if(root.document.readyState==='loading')root.document.addEventListener('DOMContentLoaded',()=>mount(root.document),{once:true});
  else mount(root.document);
})(typeof window!=='undefined'?window:globalThis);