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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Browser</title>
<style>
*{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#dee1e6;
  --tab-active:#ffffff;
  --blue:#1a73e8;
  --text:#202124;
  --icon:#5f6368;
  --hover:rgba(0,0,0,0.08);
  --green:#188038;
}

html,body{
  height:100vh;overflow:hidden;
  font-family:-apple-system,'Segoe UI',Roboto,sans-serif;
  font-size:13px;background:#202124;
  display:flex;flex-direction:column;
}

/* ── Tab strip ── */
#tab-strip{
  display:flex;align-items:flex-end;
  background:var(--bg);
  padding:6px 0 0 6px;height:36px;
  -webkit-app-region:drag;user-select:none;
}
.tab{
  display:flex;align-items:center;gap:6px;
  padding:0 8px 0 10px;height:28px;
  background:var(--tab-active);
  border-radius:8px 8px 0 0;
  min-width:120px;max-width:200px;flex:0 0 auto;
  position:relative;cursor:default;
}
.tab-fav{width:16px;height:16px;border-radius:2px;flex-shrink:0}
.tab-lbl{
  flex:1;overflow:hidden;white-space:nowrap;
  text-overflow:ellipsis;color:var(--text);font-size:12px;
}
.tab-x{
  width:16px;height:16px;border:none;background:transparent;
  border-radius:50%;cursor:pointer;color:var(--icon);
  font-size:16px;line-height:1;display:flex;
  align-items:center;justify-content:center;flex-shrink:0;
}
.tab-x:hover{background:rgba(0,0,0,0.12)}

/* ── Toolbar ── */
#toolbar{
  display:flex;align-items:center;gap:2px;
  background:var(--bg);padding:4px 8px;height:40px;
}
.nb{
  width:32px;height:32px;border:none;background:transparent;
  border-radius:50%;cursor:pointer;display:flex;
  align-items:center;justify-content:center;
  color:var(--icon);flex-shrink:0;
}
.nb:hover:not([disabled]){background:var(--hover)}
.nb[disabled]{opacity:.38;cursor:default}
.nb svg{width:18px;height:18px;fill:var(--icon)}

/* Omnibox */
#omni{
  flex:1;display:flex;align-items:center;
  background:#fff;border-radius:100px;
  height:32px;padding:0 10px;gap:6px;
  border:1.5px solid transparent;
  transition:border-color .15s,box-shadow .15s;
}
#omni:focus-within{
  border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(26,115,232,.2);
}
#lock{display:flex;align-items:center;flex-shrink:0}
#lock svg{width:13px;height:13px;fill:var(--green)}
#url{
  flex:1;border:none;outline:none;
  font-size:13px;color:var(--text);
  background:transparent;min-width:0;
}
#star{flex-shrink:0;cursor:pointer;color:var(--icon);line-height:0}
#star svg{width:16px;height:16px;fill:var(--icon)}

/* ── Viewport ── */
#vp-wrap{
  flex:1;background:#fff;position:relative;overflow:hidden;
}
#vp{
  width:100%;height:100%;display:block;
  cursor:default;outline:none;
}

/* Loading */
#overlay{
  position:absolute;inset:0;background:#fff;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:14px;z-index:9;transition:opacity .3s;
}
#overlay.gone{opacity:0;pointer-events:none}
.spin{
  width:36px;height:36px;border:3px solid #dee1e6;
  border-top-color:var(--blue);border-radius:50%;
  animation:sp .7s linear infinite;
}
@keyframes sp{to{transform:rotate(360deg)}}

/* Status */
#status{
  position:absolute;bottom:8px;right:10px;
  background:rgba(0,0,0,.5);color:#fff;
  font-size:11px;padding:2px 8px;border-radius:10px;
  z-index:10;pointer-events:none;transition:opacity .5s;
}
#status.ok{opacity:0}
</style>
</head>
<body>

<!-- Tab strip -->
<div id="tab-strip">
  <div class="tab">
    <img class="tab-fav" id="fav"
      src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='7' fill='%23bbb'/%3E%3C/svg%3E">
    <span class="tab-lbl" id="t-title">New Tab</span>
    <button class="tab-x">✕</button>
  </div>
</div>

<!-- Toolbar -->
<div id="toolbar">
  <!-- Back -->
  <button class="nb" id="b-back" disabled title="Go back">
    <svg viewBox="0 0 24 24"><path d="M20 11H7.83l5.59-5.59L12 4l-8 8 8 8 1.41-1.41L7.83 13H20v-2z"/></svg>
  </button>
  <!-- Forward -->
  <button class="nb" id="b-fwd" disabled title="Go forward">
    <svg viewBox="0 0 24 24"><path d="M12 4l-1.41 1.41L16.17 11H4v2h12.17l-5.58 5.59L12 20l8-8z"/></svg>
  </button>
  <!-- Reload -->
  <button class="nb" id="b-rel" title="Reload">
    <svg viewBox="0 0 24 24"><path d="M17.65 6.35A7.958 7.958 0 0012 4c-4.42 0-7.99 3.58-7.99 8s3.57 8 7.99 8c3.73 0 6.84-2.55 7.73-6h-2.08A5.99 5.99 0 0112 18c-3.31 0-6-2.69-6-6s2.69-6 6-6c1.66 0 3.14.69 4.22 1.78L13 11h7V4l-2.35 2.35z"/></svg>
  </button>

  <!-- Omnibox -->
  <div id="omni">
    <span id="lock">
      <svg viewBox="0 0 24 24"><path d="M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zm-6 9c-1.1 0-2-.9-2-2s.9-2 2-2 2 .9 2 2-.9 2-2 2zm3.1-9H8.9V6c0-1.71 1.39-3.1 3.1-3.1 1.71 0 3.1 1.39 3.1 3.1v2z"/></svg>
    </span>
    <input id="url" type="text" placeholder="Search or type a URL"
           autocomplete="off" spellcheck="false">
    <span id="star">
      <svg viewBox="0 0 24 24"><path d="M22 9.24l-7.19-.62L12 2 9.19 8.63 2 9.24l5.46 4.73L5.82 21 12 17.27 18.18 21l-1.63-7.03L22 9.24zM12 15.4l-3.76 2.27 1-4.28-3.32-2.88 4.38-.38L12 6.1l1.71 4.04 4.38.38-3.32 2.88 1 4.28L12 15.4z"/></svg>
    </span>
  </div>

  <!-- Menu -->
  <button class="nb" title="Chrome menu" style="margin-left:2px">
    <svg viewBox="0 0 24 24"><circle cx="12" cy="5" r="2"/><circle cx="12" cy="12" r="2"/><circle cx="12" cy="19" r="2"/></svg>
  </button>
</div>

<!-- Viewport -->
<div id="vp-wrap">
  <canvas id="vp" tabindex="0"></canvas>
  <div id="overlay">
    <div class="spin"></div>
    <span style="color:#5f6368">Connecting to browser…</span>
  </div>
  <div id="status">●</div>
</div>

<script>
const vp      = document.getElementById('vp');
const ctx     = vp.getContext('2d');
const urlIn   = document.getElementById('url');
const tTitle  = document.getElementById('t-title');
const fav     = document.getElementById('fav');
const overlay = document.getElementById('overlay');
const statusEl= document.getElementById('status');
const bBack   = document.getElementById('b-back');
const bFwd    = document.getElementById('b-fwd');
const bRel    = document.getElementById('b-rel');
const lock    = document.getElementById('lock');

const BW = 1280, BH = 800;

// ── WebSocket ─────────────────────────────────────────────────────
const proto = location.protocol === 'https:' ? 'wss:' : 'ws:';
const WS    = `${proto}//${location.host}/browser/ws`;
let ws = null;

function setStatus(msg, ok=false){
  statusEl.textContent = msg;
  statusEl.className   = ok ? 'ok' : '';
}

function connect(){
  ws = new WebSocket(WS);
  ws.onopen  = () => { setStatus('●', true); overlay.classList.add('gone'); };
  ws.onclose = () => { setStatus('Reconnecting…'); setTimeout(connect, 2000); };
  ws.onerror = () => setStatus('Error');
  ws.onmessage = async ({data}) => {
    const msg = JSON.parse(data);
    if (msg.type === 'frame'){
      const ab  = Uint8Array.from(atob(msg.data), c=>c.charCodeAt(0));
      const bmp = await createImageBitmap(new Blob([ab],{type:'image/jpeg'}));
      const cw  = vp.parentElement.clientWidth;
      const ch  = vp.parentElement.clientHeight;
      if (vp.width!==cw) vp.width=cw;
      if (vp.height!==ch) vp.height=ch;
      ctx.drawImage(bmp, 0, 0, cw, ch);
      bmp.close();
    } else if (msg.type === 'nav'){
      urlIn.value = msg.url||'';
      document.title = tTitle.textContent = msg.title||'New Tab';
      // favicon
      try {
        const u = new URL(msg.url);
        fav.src = u.origin+'/favicon.ico';
        fav.onerror = () => fav.src = "data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='7' fill='%23bbb'/%3E%3C/svg%3E";
      } catch{}
      // lock colour
      const secure = msg.url?.startsWith('https');
      lock.style.color = secure ? '#188038' : '#5f6368';
      lock.querySelector('svg').style.fill = lock.style.color;
    }
  };
}

const send = obj => ws?.readyState===1 && ws.send(JSON.stringify(obj));

// ── Coords ────────────────────────────────────────────────────────
const coord = e => {
  const r = vp.getBoundingClientRect();
  return {
    x: Math.round((e.clientX-r.left) * (BW/r.width)),
    y: Math.round((e.clientY-r.top)  * (BH/r.height))
  };
};

// ── Mouse ─────────────────────────────────────────────────────────
vp.onmousedown  = e => { vp.focus(); send({type:'mousedown', ...coord(e)}); };
vp.onmouseup    = e => send({type:'mouseup',   ...coord(e)});
vp.onclick      = e => send({type:'click',     ...coord(e)});
vp.ondblclick   = e => send({type:'dblclick',  ...coord(e)});
vp.onmousemove  = e => send({type:'mousemove', ...coord(e)});
vp.onwheel      = e => { e.preventDefault(); send({type:'wheel',dx:e.deltaX,dy:e.deltaY}); };
vp.oncontextmenu= e => e.preventDefault();

// ── Keyboard ──────────────────────────────────────────────────────
const SPECIALS = new Set([
  'Enter','Backspace','Delete','Tab','Escape',
  'ArrowLeft','ArrowRight','ArrowUp','ArrowDown',
  'Home','End','PageUp','PageDown',
  'F1','F2','F3','F4','F5','F6','F7','F8','F9','F10','F11','F12',
  'Insert','CapsLock'
]);

vp.addEventListener('keydown', e => {
  e.preventDefault();
  const k = e.key;
  if (e.ctrlKey || e.metaKey || e.altKey || SPECIALS.has(k)){
    send({type:'keydown', key:k,
          ctrl:e.ctrlKey, shift:e.shiftKey, alt:e.altKey, meta:e.metaKey});
  } else if (k.length===1){
    send({type:'type', text:k});
  }
});

// ── URL bar ───────────────────────────────────────────────────────
urlIn.addEventListener('keydown', e => {
  if (e.key==='Enter'){
    send({type:'navigate', url:urlIn.value.trim()});
    vp.focus();
  }
  e.stopPropagation();
});
urlIn.onclick = e => e.stopPropagation();

// ── Nav buttons ───────────────────────────────────────────────────
bBack.onclick = () => send({type:'back'});
bFwd.onclick  = () => send({type:'forward'});
bRel.onclick  = () => send({type:'reload'});

// ── Resize ────────────────────────────────────────────────────────
new ResizeObserver(() => {
  vp.width  = vp.parentElement.clientWidth;
  vp.height = vp.parentElement.clientHeight;
}).observe(vp.parentElement);

connect();
</script>
</body>
</html>