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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>WebContainer Live Preview</title>
  <link rel="icon" type="image/x-icon" href="data:image/svg+xml,%3Csvg width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%233b82f6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E">
  <script src="https://cdn.tailwindcss.com"></script>
  <link href="https://unpkg.com/aos@2.3.1/dist/aos.css" rel="stylesheet">
  <script src="https://unpkg.com/aos@2.3.1/dist/aos.js"></script>
  <script src="https://unpkg.com/feather-icons"></script>
  <style>
    /* Custom scrollbar */
    ::-webkit-scrollbar { width: 6px; height: 6px; }
    ::-webkit-scrollbar-track { background: transparent; }
    ::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
    ::-webkit-scrollbar-thumb:hover { background: #94a3b8; }
    /* Animated pulse for live dot */
    @keyframes pulse-dot {
      0%,100%{transform:scale(1);opacity:1;}
      50%{transform:scale(1.4);opacity:.8;}
    }
    .pulse-dot{animation:pulse-dot 1.5s infinite;}
  </style>
</head>
<body class="bg-gray-50 text-gray-900 font-sans antialiased">

  <!-- Header -->
  <header class="sticky top-0 z-20 bg-white/80 backdrop-blur border-b border-gray-200">
    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
      <div class="flex items-center justify-between h-14">
        <div class="flex items-center gap-2">
          <i data-feather="box" class="w-5 h-5 text-blue-600"></i>
          <h1 class="text-lg font-semibold">WebContainer Preview</h1>
        </div>
        <div class="flex items-center gap-3">
          <button id="publishBtn" class="hidden text-sm bg-indigo-600 hover:bg-indigo-700 text-white px-3 py-1.5 rounded-md transition items-center gap-2">
            <i data-feather="upload-cloud" class="w-4 h-4"></i><span>Publish to Space</span>
          </button>
          <div class="flex items-center gap-2 text-sm text-gray-500">
            <span id="status">Offline</span>
            <span class="w-2 h-2 bg-gray-300 rounded-full" id="status-dot"></span>
          </div>
        </div>
      </div>
    </div>
  </header>

  <!-- Main -->
  <main class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-6">
    <section class="grid grid-cols-1 md:grid-cols-6 lg:grid-cols-8 xl:grid-cols-9 gap-4">

      <!-- Controls -->
      <aside class="col-span-full md:col-span-6 lg:col-span-8 xl:col-span-3 flex flex-col gap-4" data-aos="fade-right">
        <!-- Upload -->
        <div class="bg-white rounded-xl border border-gray-200 p-4 shadow-sm">
          <h2 class="text-sm font-semibold mb-3 flex items-center gap-2">
            <i data-feather="upload" class="w-4 h-4 text-indigo-600"></i>Upload Project ZIP
          </h2>
          <label class="group relative flex flex-col items-center justify-center w-full h-28 border-2 border-dashed border-gray-300 rounded-lg cursor-pointer hover:border-indigo-400 hover:bg-indigo-50 transition">
            <i data-feather="folder-plus" class="w-8 h-8 text-gray-400 group-hover:text-indigo-600"></i>
            <span class="mt-2 text-sm text-gray-500 group-hover:text-indigo-600">Click or drop ZIP here</span>
            <input id="zipInput" type="file" accept=".zip" class="absolute opacity-0 w-full h-full">
          </label>
          <p id="fileName" class="mt-2 text-xs text-gray-400 truncate"></p>
        </div>

        <!-- Actions -->
        <div class="bg-white rounded-xl border border-gray-200 p-4 shadow-sm">
          <h2 class="text-sm font-semibold mb-3 flex items-center gap-2">
            <i data-feather="play" class="w-4 h-4 text-green-600"></i>Actions
          </h2>
          <div class="grid grid-cols-2 gap-2">
            <button id="bootBtn" class="flex items-center justify-center gap-2 px-3 py-2 bg-green-600 hover:bg-green-700 text-white text-sm rounded-lg transition">
              <i data-feather="zap"></i><span>Boot</span>
            </button>
            <button id="stopBtn" class="flex items-center justify-center gap-2 px-3 py-2 bg-gray-200 hover:bg-gray-300 text-gray-800 text-sm rounded-lg transition">
              <i data-feather="square"></i><span>Stop</span>
            </button>
          </div>
        </div>

        <!-- Terminal -->
        <div class="bg-gray-900 rounded-xl border border-gray-700 p-4 shadow-sm flex-1 flex flex-col">
          <div class="flex items-center justify-between mb-2">
            <h2 class="text-sm font-semibold text-gray-200 flex items-center gap-2">
              <i data-feather="terminal" class="w-4 h-4 text-green-400"></i>Terminal
            </h2>
            <button id="clearTerm" class="text-xs text-gray-400 hover:text-white transition">
              Clear
            </button>
          </div>
          <pre id="terminal" class="flex-1 text-xs text-green-400 overflow-auto whitespace-pre-wrap"></pre>
        </div>
      </aside>

      <!-- Preview -->
      <div id="previewWrapper" class="col-span-full md:col-span-6 lg:col-span-8 xl:col-span-6 h-[calc(70vh-53px)] lg:h-[calc(100vh-54px)] bg-white rounded-xl border border-gray-200 shadow-sm overflow-hidden flex flex-col" data-aos="fade-left">
        <!-- Preview Header -->
        <div class="flex items-center justify-between px-4 py-2 bg-gray-50 border-b border-gray-200">
          <div class="flex items-center gap-2">
            <i data-feather="eye" class="w-4 h-4 text-gray-500"></i>
            <span class="text-sm font-medium text-gray-700">Preview</span>
            <span id="previewHost" class="text-xs text-gray-500 font-mono hidden"></span>
          </div>
          <div class="flex items-center gap-1">
            <button id="refreshBtn" class="p-1.5 hover:bg-gray-200 rounded-md transition disabled:opacity-50" title="Refresh">
              <i data-feather="refresh-cw" class="w-4 h-4 text-gray-600"></i>
            </button>
            <button id="openBtn" class="p-1.5 hover:bg-gray-200 rounded-md transition disabled:opacity-50" title="Open in new tab">
              <i data-feather="external-link" class="w-4 h-4 text-gray-600"></i>
            </button>
            <button id="restartBtn" class="p-1.5 hover:bg-gray-200 rounded-md transition disabled:opacity-50" title="Restart container">
              <i data-feather="rotate-ccw" class="w-4 h-4 text-gray-600"></i>
            </button>
          </div>
        </div>

        <!-- Preview Body -->
        <div class="flex-1 relative">
          <!-- Loading -->
          <div id="loader" class="absolute inset-0 flex items-center justify-center bg-white z-10">
            <div class="text-center">
              <div class="w-8 h-8 border-2 border-gray-300 border-t-blue-600 rounded-full animate-spin mx-auto mb-3"></div>
              <div class="text-sm text-gray-600 font-medium">Booting WebContainer…</div>
              <div class="text-xs text-gray-400 mt-1">This may take a moment</div>
            </div>
          </div>

          <!-- Error -->
          <div id="error" class="absolute inset-0 hidden items-center justify-center bg-white z-10">
            <div class="text-center max-w-md">
              <div class="w-12 h-12 bg-red-100 rounded-full flex items-center justify-center mx-auto mb-4">
                <i data-feather="alert-triangle" class="w-6 h-6 text-red-600"></i>
              </div>
              <h3 class="text-lg font-medium text-gray-900 mb-2">Container Error</h3>
              <p id="errorText" class="text-sm text-red-600 mb-4"></p>
              <button id="retryBtn" class="inline-flex items-center px-4 py-2 bg-red-600 hover:bg-red-700 text-white text-sm font-medium rounded-md transition">
                <i data-feather="rotate-ccw" class="w-4 h-4 mr-2"></i>Restart Container
              </button>
            </div>
          </div>

          <!-- Iframe -->
          <iframe id="preview" class="w-full h-full border-0" sandbox="allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts"></iframe>

          <!-- Live indicator -->
          <div id="liveIndicator" class="absolute bottom-2 left-2 hidden items-center gap-2 bg-green-50 border border-green-200 rounded-full px-2 py-1">
            <span class="w-2 h-2 bg-green-500 rounded-full pulse-dot"></span>
            <span class="text-xs text-green-700 font-medium">Live</span>
          </div>
        </div>
      </div>
    </section>
  </main>

  <script type="module">
    /* ---------- Feather Icons ---------- */
    feather.replace();

    /* ---------- Elements ---------- */
    const zipInput = document.getElementById('zipInput');
    const fileName = document.getElementById('fileName');
    const bootBtn = document.getElementById('bootBtn');
    const stopBtn = document.getElementById('stopBtn');
    const clearTerm = document.getElementById('clearTerm');
    const terminal = document.getElementById('terminal');
    const status = document.getElementById('status');
    const statusDot = document.getElementById('status-dot');
    const loader = document.getElementById('loader');
    const error = document.getElementById('error');
    const errorText = document.getElementById('errorText');
    const retryBtn = document.getElementById('retryBtn');
    const refreshBtn = document.getElementById('refreshBtn');
    const openBtn = document.getElementById('openBtn');
    const restartBtn = document.getElementById('restartBtn');
    const preview = document.getElementById('preview');
    const previewHost = document.getElementById('previewHost');
    const liveIndicator = document.getElementById('liveIndicator');
    const publishBtn = document.getElementById('publishBtn');

    let webcontainer = null;
    let url = '';

    /* ---------- Util ---------- */
    const log = (msg, type = 'info') => {
      const stamp = `[${new Date().toLocaleTimeString()}]`;
      const color = type === 'error' ? 'text-red-400' : type === 'warn' ? 'text-yellow-400' : 'text-green-400';
      terminal.insertAdjacentHTML('beforeend', `<div><span class="${color}">${stamp}</span> ${msg}</div>`);
      terminal.scrollTop = terminal.scrollHeight;
    };

    const setStatus = (state) => {
      const labels = { offline: 'Offline', booting: 'Booting', online: 'Online', error: 'Error' };
      const colors = {
        offline: 'bg-gray-300',
        booting: 'bg-yellow-400',
        online: 'bg-green-500',
        error: 'bg-red-500'
      };
      status.textContent = labels[state];
      statusDot.className = `w-2 h-2 rounded-full ${colors[state]}`;
    };

    const showLoader = () => {
      loader.classList.remove('hidden');
      loader.classList.add('flex');
      error.classList.add('hidden');
      error.classList.remove('flex');
    };

    const hideLoader = () => {
      loader.classList.add('hidden');
      loader.classList.remove('flex');
    };

    const showError = (msg) => {
      hideLoader();
      errorText.textContent = msg;
      error.classList.remove('hidden');
      error.classList.add('flex');
    };

    const hideError = () => {
      error.classList.add('hidden');
      error.classList.remove('flex');
    };

    const setLive = (u) => {
      url = u;
      preview.src = url;
      previewHost.textContent = new URL(url).host;
      previewHost.classList.remove('hidden');
      liveIndicator.classList.remove('hidden');
      setStatus('online');
      publishBtn.classList.remove('hidden');
      publishBtn.classList.add('inline-flex');
    };

    /* ---------- File Input ---------- */
    zipInput.addEventListener('change', (e) => {
      const f = e.target.files[0];
      if (f) fileName.textContent = f.name;
    });

    /* ---------- Terminal Clear ---------- */
    clearTerm.addEventListener('click', () => terminal.innerHTML = '');

    /* ---------- Boot ---------- */
    bootBtn.addEventListener('click', async () => {
      if (!zipInput.files.length) return alert('Please select a ZIP file');
      showLoader();
      hideError();
      setStatus('booting');
      log('Booting WebContainer…');

      try {
        const { WebContainer } = await import('@webcontainer/api');
        webcontainer = await WebContainer.boot();
        log('WebContainer booted');

        const zip = zipInput.files[0];
        const zipBuffer = await zip.arrayBuffer();
        const zipArray = new Uint8Array(zipBuffer);
        const unzip = (await import('unzipit')).unzip;
        const { entries } = await unzip(zipArray);

        const files = {};
        for (const [path, entry] of Object.entries(entries)) {
          if (!entry.isFile) continue;
          const blob = await entry.blob();
          files[path] = { file: { blob } };
        }

        await webcontainer.mount(files);
        log('Files mounted');

        // Default package.json
        const defaultPackageJson = {
          name: 'preview-app',
          type: 'module',
          scripts: { dev: 'vite', build: 'vite build', preview: 'vite preview' },
          devDependencies: { vite: '^5.0.0' }
        };
        if (!files['package.json']) {
          await webcontainer.fs.writeFile('package.json', JSON.stringify(defaultPackageJson, null, 2));
        }

        log('Installing dependencies…');
        const install = await webcontainer.spawn('npm', ['install']);
        await install.exit;
        log('Dependencies installed');

        log('Starting dev server…');
        await webcontainer.spawn('npm', ['run', 'dev']);

        webcontainer.on('server-ready', (port, u) => {
          hideLoader();
          setLive(u);
          log(`Server ready at ${u}`);
        });

      } catch (err) {
        log(err.message, 'error');
        setStatus('error');
        showError(err.message);
      }
    });

    /* ---------- Stop ---------- */
    stopBtn.addEventListener('click', async () => {
      if (!webcontainer) return;
      try {
        await webcontainer.spawn('pkill', ['-f', 'node']);
        webcontainer = null;
        url = '';
        preview.src = '';
        previewHost.textContent = '';
        previewHost.classList.add('hidden');
        liveIndicator.classList.add('hidden');
        setStatus('offline');
        log('Container stopped');
      } catch (e) {
        log(e.message, 'error');
      }
    });

    /* ---------- Refresh ---------- */
    refreshBtn.addEventListener('click', () => {
      if (!url) return;
      preview.src = '';
      setTimeout(() => preview.src = url, 100);
      log('Preview refreshed');
    });

    /* ---------- Open in new tab ---------- */
    openBtn.addEventListener('click', () => {
      if (url) window.open(url, '_blank');
    });

    /* ---------- Restart container ---------- */
    restartBtn.addEventListener('click', async () => {
      if (!webcontainer) return;
      showLoader();
      try {
        await webcontainer.spawn('pkill', ['-f', 'node']);
        await bootBtn.click();
      } catch (e) {
        log(e.message, 'error');
        showError(e.message);
      }
    });

    /* ---------- Retry ---------- */
    retryBtn.addEventListener('click', () => bootBtn.click());

    /* ---------- Publish to Space ---------- */
    publishBtn.addEventListener('click', async () => {
      if (!url) return;
      
      // Get Space name and token from user
      const spaceName = prompt('Enter Space name (lowercase, no spaces):', 'webcontainer-preview');
      if (!spaceName) return;
      
      const hfToken = prompt('Enter Hugging Face token (hf_...):');
      if (!hfToken) return;

      publishBtn.disabled = true;
      publishBtn.innerHTML = '<i data-feather="loader" class="w-4 h-4 animate-spin mr-2"></i>Publishing…';
      feather.replace();

      try {
        // Dynamically import JSZip and publish utilities
        const JSZip = await import('https://cdn.skypack.dev/jszip');
        
        // Create project snapshot with actual files
        const zip = new JSZip.default();
        
        // Collect files from WebContainer filesystem
        const walkDirectory = async (path = '.') => {
          try {
            const entries = await webcontainer.fs.readdir(path, { withFileTypes: true });
            
            for (const entry of entries) {
              if (entry.name === 'node_modules' || entry.name === '.git' || entry.name.startsWith('.')) {
                continue;
              }

              const fullPath = path === '.' ? entry.name : `${path}/${entry.name}`;
              
              if (entry.isDirectory()) {
                await walkDirectory(fullPath);
              } else {
                try {
                  const content = await webcontainer.fs.readFile(fullPath, 'utf-8');
                  zip.file(fullPath, content);
                } catch (err) {
                  // Try reading as binary if UTF-8 fails
                  try {
                    const content = await webcontainer.fs.readFile(fullPath);
                    zip.file(fullPath, content);
                  } catch (binaryErr) {
                    console.warn(`Failed to read file: ${fullPath}`, binaryErr);
                  }
                }
              }
            }
          } catch (err) {
            console.error(`Failed to read directory: ${path}`, err);
          }
        };

        await walkDirectory();
        
        // Add README.md for Spaces
        const readmeContent = `---
title: ${spaceName}
emoji: 🚀
colorFrom: blue
colorTo: purple
sdk: static
pinned: false
---

# ${spaceName}

This Space was automatically deployed from WebContainer.
`;
        zip.file('README.md', readmeContent);

        // Add .gitignore
        const gitignoreContent = `node_modules/
.env
.DS_Store
*.log
dist/
build/
.next/
.nuxt/
`;
        zip.file('.gitignore', gitignoreContent);

        // Generate ZIP blob
        const zipBlob = await zip.generateAsync({ 
          type: 'blob',
          compression: 'DEFLATE',
          compressionOptions: { level: 6 }
        });

        // Create Space via Hugging Face API
        const username = 'likhonsheikh'; // In production, extract from token
        const spaceId = `${username}/${spaceName}`;

        // Create or update space
        try {
          await fetch('https://huggingface.co/api/repos/create', {
            method: 'POST',
            headers: {
              'Authorization': `Bearer ${hfToken}`,
              'Content-Type': 'application/json',
            },
            body: JSON.stringify({
              type: 'space',
              name: spaceName,
              private: false,
              sdk: 'static',
              description: `Auto-published from WebContainer`
            }),
          });
        } catch (createErr) {
          // Space might already exist, continue with upload
          console.log('Space might already exist, proceeding with upload...');
        }

        // Upload files to Space repository
        const formData = new FormData();
        formData.append('file', zipBlob, 'project.zip');

        const uploadResponse = await fetch(
          `https://huggingface.co/api/repos/${spaceId}/upload/main`,
          {
            method: 'POST',
            headers: {
              'Authorization': `Bearer ${hfToken}`,
            },
            body: formData,
          }
        );

        if (!uploadResponse.ok) {
          const errorText = await uploadResponse.text();
          throw new Error(`Upload failed: ${uploadResponse.statusText} - ${errorText}`);
        }

        // Wait for Space to build (simplified - in production poll the API)
        log('Space created! Building...');
        
        setTimeout(() => {
          const spaceUrl = `https://huggingface.co/spaces/${spaceId}`;
          log(`Space published! View at: ${spaceUrl}`);
          
          if (confirm('Space published! Open in new tab?')) {
            window.open(spaceUrl, '_blank');
          }
        }, 5000);

      } catch (e) {
        log(e.message, 'error');
        alert('Publishing failed: ' + e.message);
      } finally {
        publishBtn.disabled = false;
        publishBtn.innerHTML = '<i data-feather="upload-cloud" class="w-4 h-4 mr-2"></i>Publish to Space';
        feather.replace();
      }
    });

    /* ---------- Init status ---------- */
    setStatus('offline');
  </script>
</body>
</html>