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RadarDrop
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8"/>
<meta name="viewport" content="width=device-width,initial-scale=1.0"/>
<title>RadarDrop v2</title>
<style>
  @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

  :root{
    --bg:#000;
    --surface:rgba(255,255,255,0.04);
    --surface-hover:rgba(255,255,255,0.08);
    --border:rgba(255,255,255,0.1);
    --text:#fff;
    --muted:rgba(255,255,255,0.45);
    --glow:rgba(255,255,255,0.12);
    --danger:rgba(255,80,80,0.85);
    --green:rgba(80,255,140,0.85);
  }

  html,body{height:100%;background:var(--bg);color:var(--text);font-family:'Inter',system-ui,sans-serif;overflow:hidden}

  /* ── Layout ── */
  .app-container{display:none;grid-template-columns:300px 1fr 340px;height:100vh}
  .app-container.active{display:grid}

  /* ── Landing Page ── */
  .landing{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;text-align:center}
  .landing.hidden{display:none}
  .brand-title{font-size:3rem;font-weight:700;letter-spacing:1px;margin-bottom:8px;display:flex;align-items:center;gap:16px}
  .brand-dot{width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 0 16px #fff,0 0 32px #fff}
  .landing-sub{color:var(--muted);font-size:1.1rem;margin-bottom:40px}
  
  .room-box{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px;width:100%;max-width:400px}
  .input-code{width:100%;background:rgba(0,0,0,0.3);border:1px solid var(--border);color:#fff;font-size:1.5rem;text-align:center;padding:16px;border-radius:12px;letter-spacing:8px;outline:none;font-family:monospace;transition:border .2s}
  .input-code:focus{border-color:rgba(255,255,255,0.5)}
  .input-code::placeholder{color:var(--muted);letter-spacing:2px;font-family:'Inter',sans-serif;font-size:1rem}
  
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 24px;border-radius:10px;font-size:.9rem;font-weight:600;
    cursor:pointer;transition:all .2s;border:1px solid var(--border);
    background:rgba(255,255,255,0.08);color:#fff;font-family:inherit;width:100%;
  }
  .btn:hover{background:rgba(255,255,255,0.15);border-color:rgba(255,255,255,0.3);transform:translateY(-1px)}
  .btn-primary{background:#fff;color:#000;border:none}
  .btn-primary:hover{background:rgba(255,255,255,0.85);box-shadow:0 0 16px var(--glow)}
  .btn-sm{padding:6px 14px;font-size:.75rem;border-radius:8px;width:auto}
  .btn-danger{background:rgba(255,50,50,0.1);border-color:rgba(255,80,80,0.3);color:rgba(255,130,130,1)}
  
  .divider{display:flex;align-items:center;text-align:center;color:var(--muted);font-size:.8rem;margin:24px 0}
  .divider::before,.divider::after{content:'';flex:1;border-bottom:1px solid var(--border)}
  .divider:not(:empty)::before{margin-right:.5em}
  .divider:not(:empty)::after{margin-left:.5em}

  /* ── Sidebar (Left) ── */
  .sidebar{
    background:rgba(255,255,255,0.02);border-right:1px solid var(--border);
    display:flex;flex-direction:column;align-items:center;padding:24px 16px;gap:24px;overflow-y:auto;
  }
  .room-badge{background:#fff;color:#000;padding:6px 16px;border-radius:20px;font-weight:700;letter-spacing:2px;font-size:1.1rem;font-family:monospace}
  
  /* ── Radar SVG ── */
  .radar-wrap{position:relative;width:180px;height:180px}
  .radar-wrap svg{width:100%;height:100%}
  .radar-ring{fill:none;stroke:rgba(255,255,255,0.15);stroke-width:1}
  .radar-sweep{transform-origin:90px 90px;animation:sweep 3s linear infinite}
  @keyframes sweep{to{transform:rotate(360deg)}}
  .radar-dot{fill:#fff;animation:blink 2s ease-in-out infinite}
  @keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
  .blip{fill:#fff;opacity:0;animation:blipAnim 4s ease-in-out infinite}
  @keyframes blipAnim{0%,100%{opacity:0}40%{opacity:.9}60%{opacity:.9}80%{opacity:0}}

  /* ── QR Toggle ── */
  .qr-wrap{width:100%;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;display:flex;flex-direction:column;align-items:center;gap:10px}
  .qr-wrap img{width:140px;height:140px;border-radius:8px;border:2px solid rgba(255,255,255,0.1)}
  .qr-toggle{display:flex;width:100%;border:1px solid var(--border);border-radius:8px;overflow:hidden}
  .qr-tab{flex:1;padding:6px;font-size:.7rem;font-weight:600;text-align:center;cursor:pointer;border:none;background:transparent;color:var(--muted);transition:all .2s}
  .qr-tab.active{background:rgba(255,255,255,0.15);color:#fff}
  .public-url-text{font-size:.65rem;color:var(--muted);word-break:break-all;text-align:center}

  /* ── Main area (Center) ── */
  .main{display:flex;flex-direction:column;padding:32px;overflow-y:auto}
  .section-title{font-size:.75rem;text-transform:uppercase;letter-spacing:2px;color:var(--muted);margin-bottom:16px}
  
  .drop-zone{
    border:2px dashed rgba(255,255,255,0.2);border-radius:16px;
    padding:40px 20px;text-align:center;cursor:pointer;
    background:var(--surface);transition:all .2s;margin-bottom:32px;
  }
  .drop-zone:hover,.drop-zone.drag-over{border-color:rgba(255,255,255,0.5);background:var(--surface-hover)}
  .drop-icon{font-size:2.5rem;margin-bottom:8px;display:block}
  #fileInput{display:none}

  /* ── File list ── */
  .files-grid{display:flex;flex-direction:column;gap:8px}
  .file-card{
    display:flex;align-items:center;gap:16px;
    background:var(--surface);border:1px solid var(--border);
    border-radius:12px;padding:12px 16px;transition:transform .2s;
  }
  .file-card:hover{background:var(--surface-hover);transform:translateX(4px)}
  .file-icon{font-size:1.5rem;width:40px;text-align:center}
  .file-info{flex:1;min-width:0}
  .file-name{font-size:.85rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .file-meta{font-size:.65rem;color:var(--muted);margin-top:4px}

  /* ── Chat area (Right) ── */
  .chat-panel{
    background:rgba(255,255,255,0.015);border-left:1px solid var(--border);
    display:flex;flex-direction:column;height:100vh;
  }
  .chat-header{padding:20px;border-bottom:1px solid var(--border);font-weight:600;font-size:.9rem;display:flex;align-items:center;gap:10px}
  .chat-messages{flex:1;padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:16px}
  
  .chat-msg{display:flex;flex-direction:column;align-items:flex-start;max-width:85%}
  .chat-msg.self{align-items:flex-end;align-self:flex-end}
  .msg-sender{font-size:.65rem;color:var(--muted);margin-bottom:4px;margin-left:4px}
  .chat-msg.self .msg-sender{margin-right:4px}
  .msg-bubble{background:var(--surface);border:1px solid var(--border);padding:10px 14px;border-radius:14px;font-size:.85rem;line-height:1.4;word-wrap:break-word}
  .chat-msg.self .msg-bubble{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.2)}
  .msg-time{font-size:.6rem;color:var(--muted);margin-top:4px;align-self:flex-end}

  .chat-input-wrap{padding:16px;border-top:1px solid var(--border);display:flex;gap:10px;background:rgba(0,0,0,0.5)}
  .chat-input{flex:1;background:var(--surface);border:1px solid var(--border);color:#fff;padding:12px 16px;border-radius:24px;outline:none;font-size:.85rem;font-family:inherit;transition:border .2s}
  .chat-input:focus{border-color:rgba(255,255,255,0.4)}
  .chat-send{background:#fff;color:#000;border:none;width:40px;height:40px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .2s}
  .chat-send:hover{transform:scale(1.05)}

  /* ── Toast ── */
  .toast-wrap{position:fixed;top:24px;right:24px;display:flex;flex-direction:column;gap:10px;z-index:9999}
  .toast{
    background:rgba(255,255,255,0.1);backdrop-filter:blur(16px);
    border:1px solid var(--border);border-radius:10px;
    padding:12px 18px;font-size:.8rem;animation:toastIn .3s ease;
  }
  .toast.success{border-color:rgba(80,255,140,0.4);color:rgba(180,255,200,1)}
  @keyframes toastIn{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:none}}

  /* ── Name Modal ── */
  .modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.8);backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;z-index:100}
  .modal-overlay.active{display:flex}
</style>
</head>
<body>

<div class="toast-wrap" id="toastWrap"></div>

<!-- Name Modal -->
<div class="modal-overlay" id="nameModal">
  <div class="room-box">
    <h2 style="margin-bottom:8px">What's your name?</h2>
    <p class="landing-sub" style="margin-bottom:20px;font-size:.9rem">This will be shown in the room chat.</p>
    <input type="text" id="usernameInput" class="input-code" placeholder="Enter name" style="letter-spacing:normal;text-align:left;font-family:inherit;margin-bottom:16px">
    <button class="btn btn-primary" onclick="setName()">Continue</button>
  </div>
</div>

<!-- Landing -->
<div class="landing" id="landingPage">
  <div class="brand-title"><span class="brand-dot"></span> RadarDrop</div>
  <div class="landing-sub">Private, secure, real-time file sharing rooms.</div>
  
  <div class="room-box">
    <button class="btn btn-primary" style="padding:16px;font-size:1.05rem" onclick="createRoom()">οΌ‹ Create New Room</button>
    <div class="divider">OR</div>
    <input type="text" id="joinCode" class="input-code" placeholder="PIN" maxlength="4" style="margin-bottom:12px">
    <button class="btn" onclick="joinRoom()">Join Room</button>
  </div>
</div>

<!-- Main App -->
<div class="app-container" id="app">
  
  <!-- Sidebar -->
  <aside class="sidebar">
    <div style="font-weight:700;font-size:1.1rem;display:flex;align-items:center;gap:8px">
      <span class="brand-dot" style="width:10px;height:10px"></span> RadarDrop
    </div>
    
    <div style="text-align:center;margin-top:10px">
      <div style="font-size:.7rem;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:6px">Room Code</div>
      <div class="room-badge" id="roomBadge">----</div>
    </div>

    <!-- Radar -->
    <div class="radar-wrap">
      <svg viewBox="0 0 180 180" xmlns="http://www.w3.org/2000/svg">
        <circle cx="90" cy="90" r="88" fill="rgba(255,255,255,0.02)"/>
        <circle class="radar-ring" cx="90" cy="90" r="70"/>
        <circle class="radar-ring" cx="90" cy="90" r="45"/>
        <circle class="radar-ring" cx="90" cy="90" r="20"/>
        <line x1="90" y1="10" x2="90" y2="170" stroke="rgba(255,255,255,0.1)"/>
        <line x1="10" y1="90" x2="170" y2="90" stroke="rgba(255,255,255,0.1)"/>
        <g class="radar-sweep">
          <defs>
            <radialGradient id="sweepGrad" cx="90" cy="90" r="70" gradientUnits="userSpaceOnUse">
              <stop offset="0%" stop-color="rgba(255,255,255,0)"/>
              <stop offset="100%" stop-color="rgba(255,255,255,0.2)"/>
            </radialGradient>
          </defs>
          <path d="M90,90 L90,20 A70,70 0 0,1 160,90 Z" fill="url(#sweepGrad)"/>
          <line x1="90" y1="90" x2="90" y2="20" stroke="rgba(255,255,255,0.8)" stroke-width="1.5"/>
        </g>
        <circle class="blip" cx="120" cy="50" r="3"/>
        <circle class="blip" cx="60" cy="120" r="2" style="animation-delay:1.5s"/>
        <circle class="radar-dot" cx="90" cy="90" r="3"/>
      </svg>
    </div>

    <!-- QR -->
    <div class="qr-wrap">
      <div class="qr-toggle">
        <button class="qr-tab active" id="tabLocal" onclick="switchQR('local')">Local</button>
        <button class="qr-tab" id="tabPublic" onclick="switchQR('public')">Internet</button>
      </div>
      <img id="qrImg" src="" alt="QR Code"/>
      <div class="public-url-text" id="publicUrlText" style="margin-top:4px">Loading tunnel...</div>
    </div>
    
    <button class="btn btn-danger btn-sm" onclick="leaveRoom()" style="margin-top:auto">← Leave Room</button>
  </aside>

  <!-- Center: Files -->
  <main class="main">
    <div class="section-title">Share Files</div>
    <div class="drop-zone" id="dropZone" onclick="document.getElementById('fileInput').click()">
      <span class="drop-icon">πŸ“‘</span>
      <div style="font-weight:600;font-size:1.1rem;margin-bottom:6px">Drop files here</div>
      <div style="font-size:.8rem;color:var(--muted)">or click to browse</div>
      <input type="file" id="fileInput" multiple/>
    </div>

    <div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:12px">
      <div class="section-title" style="margin:0">Room Files</div>
    </div>
    <div class="files-grid" id="filesList"></div>
  </main>

  <!-- Right: Chat -->
  <aside class="chat-panel">
    <div class="chat-header">
      πŸ’¬ Room Chat
    </div>
    <div class="chat-messages" id="chatMsgs">
      <div style="text-align:center;color:var(--muted);font-size:.75rem;margin:auto">Chat history is synced automatically.</div>
    </div>
    <div class="chat-input-wrap">
      <input type="text" id="chatInput" class="chat-input" placeholder="Type a message..." autocomplete="off">
      <button class="chat-send" onclick="sendChat()">
        <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="22" y1="2" x2="11" y2="13"></line><polygon points="22 2 15 22 11 13 2 9 22 2"></polygon></svg>
      </button>
    </div>
  </aside>
</div>

<script>
// ── State ──────────────────────────────────────────────────────────────────
let roomCode = null;
let username = localStorage.getItem('radardrop_name') || '';
let ws = null;
let publicUrl = null;
let localUrl = null;

// ── Init ───────────────────────────────────────────────────────────────────
window.onload = async () => {
  if(!username) {
    document.getElementById('nameModal').classList.add('active');
  }
  
  // Check URL params for room invite
  const params = new URLSearchParams(window.location.search);
  const invite = params.get('room');
  if(invite && invite.length === 4){
    document.getElementById('joinCode').value = invite;
  }
  
  // Load IP for QR codes
  try{
    const r = await fetch('/ip');
    const d = await r.json();
    localUrl = d.local_url;
    publicUrl = d.public_url;
  }catch(e){}
};

function setName(){
  const val = document.getElementById('usernameInput').value.trim();
  if(!val) return;
  username = val;
  localStorage.setItem('radardrop_name', username);
  document.getElementById('nameModal').classList.remove('active');
}

function toast(msg, type='success'){
  const el = document.createElement('div');
  el.className = `toast ${type}`;
  el.textContent = msg;
  document.getElementById('toastWrap').appendChild(el);
  setTimeout(()=>{ el.style.opacity='0'; el.style.transition='opacity .4s'; setTimeout(()=>el.remove(),400); }, 3000);
}

// ── Rooms ──────────────────────────────────────────────────────────────────
function generateCode(){ return Math.floor(1000 + Math.random() * 9000).toString(); }

function createRoom(){
  const code = generateCode();
  enterRoom(code);
}

function joinRoom(){
  const code = document.getElementById('joinCode').value.trim();
  if(code.length !== 4) return toast('Enter 4 digit PIN', 'error');
  enterRoom(code);
}

function enterRoom(code){
  roomCode = code;
  document.getElementById('landingPage').classList.add('hidden');
  document.getElementById('app').classList.add('active');
  document.getElementById('roomBadge').textContent = code;
  
  // Update URL without reload
  const newUrl = window.location.protocol + "//" + window.location.host + window.location.pathname + "?room=" + code;
  window.history.pushState({path:newUrl},'',newUrl);
  
  switchQR('local');
  loadFiles();
  connectWS();
}

function leaveRoom(){
  if(ws) ws.close();
  roomCode = null;
  document.getElementById('app').classList.remove('active');
  document.getElementById('landingPage').classList.remove('hidden');
  window.history.pushState({},'',window.location.pathname);
}

function switchQR(mode){
  const img = document.getElementById('qrImg');
  const txt = document.getElementById('publicUrlText');
  document.getElementById('tabLocal').classList.toggle('active', mode==='local');
  document.getElementById('tabPublic').classList.toggle('active', mode==='public');
  
  if(mode === 'local'){
    img.src = `/qr?room=${roomCode}&t=${Date.now()}`;
    txt.textContent = 'Works on Local Wi-Fi';
  } else {
    if(publicUrl && publicUrl !== 'FAILED'){
      img.src = `/qr/public?room=${roomCode}&t=${Date.now()}`;
      txt.textContent = publicUrl;
    } else {
      img.src = '';
      txt.textContent = 'Tunnel not active';
    }
  }
}

// ── WebSockets ─────────────────────────────────────────────────────────────
function connectWS(){
  if(ws) ws.close();
  const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
  const wsUrl = `${protocol}//${window.location.host}/ws/${roomCode}`;
  
  ws = new WebSocket(wsUrl);
  ws.onmessage = (e) => {
    const data = JSON.parse(e.data);
    if(data.type === 'chat'){
      renderMessage(data);
    } else if(data.type === 'files_updated'){
      loadFiles();
    }
  };
  ws.onclose = () => {
    if(roomCode) setTimeout(connectWS, 2000); // Reconnect if still in room
  };
}

function renderMessage(msg){
  const box = document.getElementById('chatMsgs');
  const isSelf = msg.sender === username;
  const el = document.createElement('div');
  el.className = `chat-msg ${isSelf ? 'self' : ''}`;
  el.innerHTML = `
    <div class="msg-sender">${isSelf ? 'You' : msg.sender}</div>
    <div class="msg-bubble">${msg.text}</div>
    <div class="msg-time">${msg.timestamp || ''}</div>
  `;
  box.appendChild(el);
  box.scrollTop = box.scrollHeight;
}

function sendChat(){
  const input = document.getElementById('chatInput');
  const text = input.value.trim();
  if(!text || !ws) return;
  ws.send(JSON.stringify({type: 'chat', sender: username, text: text}));
  input.value = '';
}

document.getElementById('chatInput').addEventListener('keypress', e => {
  if(e.key === 'Enter') sendChat();
});

// ── Files ──────────────────────────────────────────────────────────────────
function fileIcon(mime=''){
  if(mime.startsWith('image/'))  return 'πŸ–ΌοΈ';
  if(mime.startsWith('video/'))  return '🎬';
  if(mime.startsWith('audio/'))  return '🎡';
  if(mime.includes('pdf'))       return 'πŸ“„';
  if(mime.includes('zip'))       return 'πŸ—œοΈ';
  if(mime.includes('text')||mime.includes('json')||mime.includes('javascript')) return 'πŸ“';
  return 'πŸ“„';
}

async function loadFiles(){
  if(!roomCode) return;
  try{
    const r = await fetch(`/api/rooms/${roomCode}/files`);
    const files = await r.json();
    const el = document.getElementById('filesList');
    if(!files.length){
      el.innerHTML = `<div style="text-align:center;padding:40px;color:var(--muted)">No files in this room yet.</div>`;
      return;
    }
    el.innerHTML = files.map(f=>`
      <div class="file-card">
        <div class="file-icon">${fileIcon(f.mime)}</div>
        <div class="file-info">
          <div class="file-name" title="${f.name}">${f.name}</div>
          <div class="file-meta">${f.size_hr} Β· ${f.modified}</div>
        </div>
        <div style="display:flex;gap:6px">
          <a href="/api/rooms/${roomCode}/download/${encodeURIComponent(f.name)}" download class="btn btn-sm">⬇</a>
          <button class="btn btn-sm btn-danger" onclick="deleteFile('${f.name.replace(/'/g,"\\'")}')">βœ•</button>
        </div>
      </div>
    `).join('');
  }catch(e){
    console.error(e);
  }
}

async function deleteFile(name){
  if(!confirm(`Delete "${name}"?`)) return;
  const r = await fetch(`/api/rooms/${roomCode}/files/${encodeURIComponent(name)}`, {method:'DELETE'});
  if(r.ok) toast('Deleted', 'success');
}

const dz = document.getElementById('dropZone');
dz.ondragover = e => { e.preventDefault(); dz.classList.add('drag-over'); };
dz.ondragleave = () => dz.classList.remove('drag-over');
dz.ondrop = e => { e.preventDefault(); dz.classList.remove('drag-over'); uploadFiles([...e.dataTransfer.files]); };
document.getElementById('fileInput').onchange = e => uploadFiles([...e.target.files]);

async function uploadFiles(files){
  if(!files.length || !roomCode) return;
  for(let f of files){
    const fd = new FormData(); fd.append('file', f);
    await fetch(`/api/rooms/${roomCode}/upload`, { method:'POST', body:fd });
  }
  toast(`Uploaded ${files.length} file(s)`, 'success');
}
</script>
</body>
</html>