app.py

from flask import Flask, render_template, request, jsonify
import requests
import os
import time

app = Flask(__name__)

# Function to fetch trending spaces from Huggingface with pagination
def fetch_trending_spaces(offset=0, limit=72):
    try:
        # 단순하게 데이터 가져오기 
        url = "https://huggingface.co/api/spaces"
        params = {"limit": 500}  # 최대 500개 가져오기
        
        # 타임아웃 늘리기
        response = requests.get(url, params=params, timeout=30)
        
        if response.status_code == 200:
            spaces = response.json()
            filtered_spaces = [space for space in spaces if space.get('owner') != 'None' and space.get('id', '').split('/', 1)[0] != 'None']
            
            # 요청된 offset과 limit에 맞게 슬라이싱
            start = min(offset, len(filtered_spaces))
            end = min(offset + limit, len(filtered_spaces))
            
            print(f"Fetched {len(filtered_spaces)} spaces, returning {end-start} items from {start} to {end}")
            
            return {
                'spaces': filtered_spaces[start:end],
                'total': len(filtered_spaces),
                'offset': offset,
                'limit': limit
            }
        else:
            print(f"Error fetching spaces: {response.status_code}")
            # 빈 공간 반환하지만 200개 제한의 가짜 데이터
            return {
                'spaces': generate_dummy_spaces(limit),
                'total': 200,
                'offset': offset,
                'limit': limit
            }
    except Exception as e:
        print(f"Exception when fetching spaces: {e}")
        # 가짜 데이터 생성
        return {
            'spaces': generate_dummy_spaces(limit),
            'total': 200,
            'offset': offset,
            'limit': limit
        }

# 오류 시 가짜 데이터 생성
def generate_dummy_spaces(count):
    spaces = []
    for i in range(count):
        spaces.append({
            'id': f'dummy/space-{i}',
            'owner': 'dummy',
            'title': f'Example Space {i+1}',
            'likes': 100 - i,
            'createdAt': '2023-01-01T00:00:00.000Z'
        })
    return spaces

# Transform Huggingface URL to direct space URL
def transform_url(owner, name):
    # 1. '.' 문자를 '-'로 변경
    name = name.replace('.', '-')
    # 2. '_' 문자를 '-'로 변경
    name = name.replace('_', '-')
    # 3. 대소문자 구분 없이 모두 소문자로 변경
    owner = owner.lower()
    name = name.lower()
    
    return f"https://{owner}-{name}.hf.space"

# Get space details
def get_space_details(space_data, index, offset):
    try:
        # 공통 정보 추출
        if '/' in space_data.get('id', ''):
            owner, name = space_data.get('id', '').split('/', 1)
        else:
            owner = space_data.get('owner', '')
            name = space_data.get('id', '')
        
        # None이 포함된 경우 무시
        if owner == 'None' or name == 'None':
            return None
        
        # URL 구성
        original_url = f"https://huggingface.co/spaces/{owner}/{name}"
        embed_url = transform_url(owner, name)
        
        # 좋아요 수
        likes_count = space_data.get('likes', 0)
        
        # 제목 추출
        title = space_data.get('title', name)
        
        # 태그
        tags = space_data.get('tags', [])
        
        return {
            'url': original_url,
            'embedUrl': embed_url,
            'title': title,
            'owner': owner,
            'name': name,  # Space 이름 추가 저장
            'likes_count': likes_count,
            'tags': tags,
            'rank': offset + index + 1
        }
    except Exception as e:
        print(f"Error processing space data: {e}")
        # 오류 발생 시에도 기본 객체 반환
        return {
            'url': 'https://huggingface.co/spaces',
            'embedUrl': 'https://huggingface.co/spaces',
            'title': 'Error Loading Space',
            'owner': 'huggingface',
            'name': 'error',
            'likes_count': 0,
            'tags': [],
            'rank': offset + index + 1
        }

# Homepage route
@app.route('/')
def home():
    return render_template('index.html')

# Trending spaces API
@app.route('/api/trending-spaces', methods=['GET'])
def trending_spaces():
    search_query = request.args.get('search', '').lower()
    offset = int(request.args.get('offset', 0))
    limit = int(request.args.get('limit', 72))  # 기본값 72개로 변경
    
    # Fetch trending spaces
    spaces_data = fetch_trending_spaces(offset, limit)
    
    # Process and filter spaces
    results = []
    for index, space_data in enumerate(spaces_data['spaces']):
        space_info = get_space_details(space_data, index, offset)
        
        if not space_info:
            continue
            
        # Apply search filter if needed
        if search_query:
            title = space_info['title'].lower()
            owner = space_info['owner'].lower()
            url = space_info['url'].lower()
            tags = ' '.join([str(tag) for tag in space_info.get('tags', [])]).lower()
            
            if (search_query not in title and 
                search_query not in owner and 
                search_query not in url and 
                search_query not in tags):
                continue
        
        results.append(space_info)
    
    return jsonify({
        'spaces': results,
        'total': spaces_data['total'],
        'offset': offset,
        'limit': limit
    })

if __name__ == '__main__':
    # Create templates folder
    os.makedirs('templates', exist_ok=True)
    
    # Create index.html file
    with open('templates/index.html', 'w', encoding='utf-8') as f:
        f.write('''
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Huggingface Spaces Gallery</title>
  <style>
    @import url('https://fonts.googleapis.com/css2?family=Nunito:wght@300;400;500;600;700&display=swap');
    
    :root {
      --pastel-pink: #FFD6E0;
      --pastel-blue: #C5E8FF;
      --pastel-purple: #E0C3FC;
      --pastel-yellow: #FFF2CC;
      --pastel-green: #C7F5D9;
      --pastel-orange: #FFE0C3;
      
      --mac-window-bg: rgba(250, 250, 250, 0.85);
      --mac-toolbar: #F5F5F7;
      --mac-border: #E2E2E2;
      --mac-button-red: #FF5F56;
      --mac-button-yellow: #FFBD2E;
      --mac-button-green: #27C93F;
      
      --text-primary: #333;
      --text-secondary: #666;
      --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
      line-height: 1.6;
      color: var(--text-primary);
      background-color: #f8f9fa;
      background-image: linear-gradient(135deg, var(--pastel-blue) 0%, var(--pastel-purple) 100%);
      min-height: 100vh;
      padding: 2rem;
    }
    
    .container {
      max-width: 1600px;
      margin: 0 auto;
    }
    
    /* Mac OS Window Styling */
    .mac-window {
      background-color: var(--mac-window-bg);
      border-radius: 10px;
      box-shadow: var(--box-shadow);
      backdrop-filter: blur(10px);
      overflow: hidden;
      margin-bottom: 2rem;
      border: 1px solid var(--mac-border);
    }
    
    .mac-toolbar {
      display: flex;
      align-items: center;
      padding: 10px 15px;
      background-color: var(--mac-toolbar);
      border-bottom: 1px solid var(--mac-border);
    }
    
    .mac-buttons {
      display: flex;
      gap: 8px;
      margin-right: 15px;
    }
    
    .mac-button {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      cursor: default;
    }
    
    .mac-close {
      background-color: var(--mac-button-red);
    }
    
    .mac-minimize {
      background-color: var(--mac-button-yellow);
    }
    
    .mac-maximize {
      background-color: var(--mac-button-green);
    }
    
    .mac-title {
      flex-grow: 1;
      text-align: center;
      font-size: 0.9rem;
      color: var(--text-secondary);
    }
    
    .mac-content {
      padding: 20px;
    }
    
    /* Header Styling */
    .header {
      text-align: center;
      margin-bottom: 1.5rem;
      position: relative;
    }
    
    .header h1 {
      font-size: 2.2rem;
      font-weight: 700;
      margin: 0;
      color: #2d3748;
      letter-spacing: -0.5px;
    }
    
    .header p {
      color: var(--text-secondary);
      margin-top: 0.5rem;
      font-size: 1.1rem;
    }
    
    /* Controls Styling */
    .search-bar {
      display: flex;
      align-items: center;
      margin-bottom: 1.5rem;
      background-color: white;
      border-radius: 30px;
      padding: 5px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    
    .search-bar input {
      flex-grow: 1;
      border: none;
      padding: 12px 20px;
      font-size: 1rem;
      outline: none;
      background: transparent;
      border-radius: 30px;
    }
    
    .search-bar .refresh-btn {
      background-color: var(--pastel-green);
      color: #1a202c;
      border: none;
      border-radius: 30px;
      padding: 10px 20px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    
    .search-bar .refresh-btn:hover {
      background-color: #9ee7c0;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }
    
    .refresh-icon {
      display: inline-block;
      width: 16px;
      height: 16px;
      border: 2px solid #1a202c;
      border-top-color: transparent;
      border-radius: 50%;
      animation: none;
    }
    
    .refreshing .refresh-icon {
      animation: spin 1s linear infinite;
    }
    
    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    
    /* Grid Styling */
    .grid-container {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
      gap: 1.5rem;
      margin-bottom: 2rem;
    }
    
    .grid-item {
      height: 500px;
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
      border-radius: 15px;
    }
    
    .grid-item:nth-child(6n+1) { background-color: var(--pastel-pink); }
    .grid-item:nth-child(6n+2) { background-color: var(--pastel-blue); }
    .grid-item:nth-child(6n+3) { background-color: var(--pastel-purple); }
    .grid-item:nth-child(6n+4) { background-color: var(--pastel-yellow); }
    .grid-item:nth-child(6n+5) { background-color: var(--pastel-green); }
    .grid-item:nth-child(6n+6) { background-color: var(--pastel-orange); }
    
    .grid-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    }
    
    .grid-header {
      padding: 15px;
      display: flex;
      flex-direction: column;
      background-color: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(5px);
      border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .grid-header-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 8px;
    }
    
    .rank-badge {
      background-color: #1a202c;
      color: white;
      font-size: 0.8rem;
      font-weight: 600;
      padding: 4px 8px;
      border-radius: 50px;
    }
    
    .grid-header h3 {
      margin: 0;
      font-size: 1.2rem;
      font-weight: 700;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    
    .grid-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.9rem;
    }
    
    .owner-info {
      color: var(--text-secondary);
      font-weight: 500;
    }
    
    .likes-counter {
      display: flex;
      align-items: center;
      color: #e53e3e;
      font-weight: 600;
    }
    
    .likes-counter span {
      margin-left: 4px;
    }
    
    .grid-actions {
      padding: 10px 15px;
      text-align: right;
      background-color: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(5px);
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 10;
      display: flex;
      justify-content: flex-end;
    }
    
    .open-link {
      text-decoration: none;
      color: #2c5282;
      font-weight: 600;
      padding: 5px 10px;
      border-radius: 5px;
      transition: all 0.2s;
      background-color: rgba(237, 242, 247, 0.8);
    }
    
    .open-link:hover {
      background-color: #e2e8f0;
    }
    
    .grid-content {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      padding-top: 85px; /* Header height */
      padding-bottom: 45px; /* Actions height */
    }
    
    .iframe-container {
      width: 100%;
      height: 100%;
      overflow: hidden;
      position: relative;
    }
    
    .grid-content iframe {
      width: 100%;
      height: 100%;
      border: none;
      border-radius: 0;
    }
    
    .error-placeholder {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      padding: 20px;
      background-color: rgba(255, 255, 255, 0.9);
      text-align: center;
    }
    
    .error-icon {
      font-size: 3rem;
      margin-bottom: 1rem;
      color: #e53e3e;
    }
    
    /* Pagination Styling */
    .pagination {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 10px;
      margin: 2rem 0;
    }
    
    .pagination-button {
      background-color: white;
      border: none;
      padding: 10px 20px;
      border-radius: 10px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s;
      color: var(--text-primary);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    }
    
    .pagination-button:hover {
      background-color: #f8f9fa;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    .pagination-button.active {
      background-color: var(--pastel-purple);
      color: #4a5568;
    }
    
    .pagination-button:disabled {
      background-color: #edf2f7;
      color: #a0aec0;
      cursor: default;
      box-shadow: none;
    }
    
    /* Loading Indicator */
    .loading {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: rgba(255, 255, 255, 0.8);
      backdrop-filter: blur(5px);
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 1000;
    }
    
    .loading-content {
      text-align: center;
    }
    
    .loading-spinner {
      width: 60px;
      height: 60px;
      border: 5px solid #e2e8f0;
      border-top-color: var(--pastel-purple);
      border-radius: 50%;
      animation: spin 1s linear infinite;
      margin: 0 auto 15px;
    }
    
    .loading-text {
      font-size: 1.2rem;
      font-weight: 600;
      color: #4a5568;
    }
    
    .loading-error {
      display: none;
      margin-top: 10px;
      color: #e53e3e;
      font-size: 0.9rem;
    }
    
    /* Responsive Design */
    @media (max-width: 768px) {
      body {
        padding: 1rem;
      }
      
      .grid-container {
        grid-template-columns: 1fr;
      }
      
      .search-bar {
        flex-direction: column;
        padding: 10px;
      }
      
      .search-bar input {
        width: 100%;
        margin-bottom: 10px;
      }
      
      .search-bar .refresh-btn {
        width: 100%;
        justify-content: center;
      }
      
      .pagination {
        flex-wrap: wrap;
      }
    }
  </style>
</head>
<body>
  <div class="container">
    <div class="mac-window">
      <div class="mac-toolbar">
        <div class="mac-buttons">
          <div class="mac-button mac-close"></div>
          <div class="mac-button mac-minimize"></div>
          <div class="mac-button mac-maximize"></div>
        </div>
        <div class="mac-title">Huggingface Explorer</div>
      </div>
      
      <div class="mac-content">
        <div class="header">
          <h1>HF Space 'Top Rank' Gallery</h1>
          <p>Discover the top 500 trending spaces from the Huggingface</p>
        </div>
        
        <div class="search-bar">
          <input type="text" id="searchInput" placeholder="Search by name, owner, or tags..." />
          <button id="refreshButton" class="refresh-btn">
            <span class="refresh-icon"></span>
            Refresh
          </button>
        </div>
        
        <div id="gridContainer" class="grid-container"></div>
        
        <div id="pagination" class="pagination">
          <!-- Pagination buttons will be dynamically created by JavaScript -->
        </div>
      </div>
    </div>
  </div>
  
  <div id="loadingIndicator" class="loading">
    <div class="loading-content">
      <div class="loading-spinner"></div>
      <div class="loading-text">Loading amazing spaces...</div>
      <div id="loadingError" class="loading-error">
        If this takes too long, try refreshing the page.
      </div>
    </div>
  </div>
  
  <script>
    // DOM element references
    const elements = {
      gridContainer: document.getElementById('gridContainer'),
      loadingIndicator: document.getElementById('loadingIndicator'),
      loadingError: document.getElementById('loadingError'),
      searchInput: document.getElementById('searchInput'),
      refreshButton: document.getElementById('refreshButton'),
      pagination: document.getElementById('pagination')
    };
    
    // Application state
    const state = {
      isLoading: false,
      spaces: [],
      currentPage: 0,
      itemsPerPage: 72,  // 72 items per page
      totalItems: 0,
      loadingTimeout: null,
      staticModeAttempted: {} // Track which spaces have attempted static mode
    };
    
    // Display loading indicator
    function setLoading(isLoading) {
      state.isLoading = isLoading;
      elements.loadingIndicator.style.display = isLoading ? 'flex' : 'none';
      
      if (isLoading) {
        elements.refreshButton.classList.add('refreshing');
        // Show error message if loading takes too long
        clearTimeout(state.loadingTimeout);
        state.loadingTimeout = setTimeout(() => {
          elements.loadingError.style.display = 'block';
        }, 10000); // Show error message after 10 seconds
      } else {
        elements.refreshButton.classList.remove('refreshing');
        clearTimeout(state.loadingTimeout);
        elements.loadingError.style.display = 'none';
      }
    }
    
    // API error handling
    async function handleApiResponse(response) {
      if (!response.ok) {
        const errorText = await response.text();
        throw new Error(`API Error (${response.status}): ${errorText}`);
      }
      return response.json();
    }
    
    // Create direct URL function with fixes for static sites
    function createDirectUrl(owner, name) {
      try {
        // 1. Replace '.' characters with '-'
        name = name.replace(/\./g, '-');
        // 2. Replace '_' characters with '-'
        name = name.replace(/_/g, '-');
        // 3. Convert everything to lowercase
        owner = owner.toLowerCase();
        name = name.toLowerCase();
        
        return `https://${owner}-${name}.hf.space`;
      } catch (error) {
        console.error('URL creation error:', error);
        return 'https://huggingface.co';
      }
    }
    
    // Load spaces with timeout
    async function loadSpaces(page = 0) {
      setLoading(true);
      
      try {
        const searchText = elements.searchInput.value;
        const offset = page * state.itemsPerPage;
        
        // Set timeout (30 seconds)
        const timeoutPromise = new Promise((_, reject) => 
          setTimeout(() => reject(new Error('Request timeout')), 30000)
        );
        
        const fetchPromise = fetch(`/api/trending-spaces?search=${encodeURIComponent(searchText)}&offset=${offset}&limit=${state.itemsPerPage}`);
        
        // Use the first Promise that completes
        const response = await Promise.race([fetchPromise, timeoutPromise]);
        const data = await handleApiResponse(response);
        
        // Update state on successful load
        state.spaces = data.spaces;
        state.totalItems = data.total;
        state.currentPage = page;
        
        renderGrid(data.spaces);
        renderPagination();
      } catch (error) {
        console.error('Error loading spaces:', error);
        
        // Show empty grid with error message
        elements.gridContainer.innerHTML = `
          <div style="grid-column: 1/-1; text-align: center; padding: 40px;">
            <div style="font-size: 3rem; margin-bottom: 20px;">⚠️</div>
            <h3 style="margin-bottom: 10px;">Unable to load spaces</h3>
            <p style="color: #666;">Please try refreshing the page. If the problem persists, try again later.</p>
            <button id="retryButton" style="margin-top: 20px; padding: 10px 20px; background: var(--pastel-purple); border: none; border-radius: 5px; cursor: pointer;">
              Try Again
            </button>
          </div>
        `;
        
        // Add event listener to retry button
        document.getElementById('retryButton')?.addEventListener('click', () => loadSpaces(0));
        
        // Render simple pagination
        renderPagination();
      } finally {
        setLoading(false);
      }
    }
    
    // Render pagination
    function renderPagination() {
      elements.pagination.innerHTML = '';
      
      const totalPages = Math.ceil(state.totalItems / state.itemsPerPage);
      
      // Previous page button
      const prevButton = document.createElement('button');
      prevButton.className = `pagination-button ${state.currentPage === 0 ? 'disabled' : ''}`;
      prevButton.textContent = 'Previous';
      prevButton.disabled = state.currentPage === 0;
      prevButton.addEventListener('click', () => {
        if (state.currentPage > 0) {
          loadSpaces(state.currentPage - 1);
        }
      });
      elements.pagination.appendChild(prevButton);
      
      // Page buttons (maximum of 7)
      const maxButtons = 7;
      let startPage = Math.max(0, state.currentPage - Math.floor(maxButtons / 2));
      let endPage = Math.min(totalPages - 1, startPage + maxButtons - 1);
      
      // Adjust start page if the end page is less than maximum buttons
      if (endPage - startPage + 1 < maxButtons) {
        startPage = Math.max(0, endPage - maxButtons + 1);
      }
      
      for (let i = startPage; i <= endPage; i++) {
        const pageButton = document.createElement('button');
        pageButton.className = `pagination-button ${i === state.currentPage ? 'active' : ''}`;
        pageButton.textContent = i + 1;
        pageButton.addEventListener('click', () => {
          if (i !== state.currentPage) {
            loadSpaces(i);
          }
        });
        elements.pagination.appendChild(pageButton);
      }
      
      // Next page button
      const nextButton = document.createElement('button');
      nextButton.className = `pagination-button ${state.currentPage >= totalPages - 1 ? 'disabled' : ''}`;
      nextButton.textContent = 'Next';
      nextButton.disabled = state.currentPage >= totalPages - 1;
      nextButton.addEventListener('click', () => {
        if (state.currentPage < totalPages - 1) {
          loadSpaces(state.currentPage + 1);
        }
      });
      elements.pagination.appendChild(nextButton);
    }
    
    // Handle iframe error and provide static site fallback
    function handleIframeError(iframe, owner, name, title) {
      const container = iframe.parentNode;
      
      // Error message container
      const errorPlaceholder = document.createElement('div');
      errorPlaceholder.className = 'error-placeholder';
      
      // Error icon
      const errorIcon = document.createElement('div');
      errorIcon.className = 'error-icon';
      errorIcon.textContent = '⚠️';
      errorPlaceholder.appendChild(errorIcon);
      
      // Error message
      const errorMessage = document.createElement('p');
      errorMessage.textContent = `"${title}" space couldn't be loaded`;
      errorPlaceholder.appendChild(errorMessage);
      
      // Try static site version button
      const directStaticLink = document.createElement('a');
      directStaticLink.href = `https://${owner}-${name}.hf.space/index.html`;
      directStaticLink.target = '_blank';
      directStaticLink.textContent = 'Try Static Version';
      directStaticLink.style.color = '#3182ce';
      directStaticLink.style.marginTop = '10px';
      directStaticLink.style.display = 'inline-block';
      directStaticLink.style.padding = '8px 16px';
      directStaticLink.style.background = '#ebf8ff';
      directStaticLink.style.borderRadius = '5px';
      directStaticLink.style.fontWeight = '600';
      directStaticLink.style.marginRight = '10px';
      errorPlaceholder.appendChild(directStaticLink);
      
      // Direct HF link
      const directLink = document.createElement('a');
      directLink.href = `https://huggingface.co/spaces/${owner}/${name}`;
      directLink.target = '_blank';
      directLink.textContent = 'Visit HF Space';
      directLink.style.color = '#3182ce';
      directLink.style.marginTop = '10px';
      directLink.style.display = 'inline-block';
      directLink.style.padding = '8px 16px';
      directLink.style.background = '#ebf8ff';
      directLink.style.borderRadius = '5px';
      directLink.style.fontWeight = '600';
      errorPlaceholder.appendChild(directLink);
      
      // Hide iframe and show error message
      iframe.style.display = 'none';
      container.appendChild(errorPlaceholder);
    }
    
    // Render grid
    function renderGrid(spaces) {
      elements.gridContainer.innerHTML = '';
      
      if (!spaces || spaces.length === 0) {
        const noResultsMsg = document.createElement('p');
        noResultsMsg.textContent = 'No spaces found matching your search.';
        noResultsMsg.style.padding = '2rem';
        noResultsMsg.style.textAlign = 'center';
        noResultsMsg.style.fontStyle = 'italic';
        noResultsMsg.style.color = '#718096';
        elements.gridContainer.appendChild(noResultsMsg);
        return;
      }
      
      spaces.forEach((item) => {
        try {
          const { url, title, likes_count, owner, name, rank } = item;
          
          // Skip if owner is 'None'
          if (owner === 'None') {
            return;
          }
          
          // Create grid item - Apply rotating pastel colors
          const gridItem = document.createElement('div');
          gridItem.className = 'grid-item';
          
          // Header
          const header = document.createElement('div');
          header.className = 'grid-header';
          
          // Header top part with rank
          const headerTop = document.createElement('div');
          headerTop.className = 'grid-header-top';
          
          // Title
          const titleEl = document.createElement('h3');
          titleEl.textContent = title;
          titleEl.title = title; // For tooltip on hover
          headerTop.appendChild(titleEl);
          
          // Rank badge
          const rankBadge = document.createElement('div');
          rankBadge.className = 'rank-badge';
          rankBadge.textContent = `#${rank}`;
          headerTop.appendChild(rankBadge);
          
          header.appendChild(headerTop);
          
          // Grid meta info
          const metaInfo = document.createElement('div');
          metaInfo.className = 'grid-meta';
          
          // Owner info
          const ownerEl = document.createElement('div');
          ownerEl.className = 'owner-info';
          ownerEl.textContent = `by ${owner}`;
          metaInfo.appendChild(ownerEl);
          
          // Likes counter
          const likesCounter = document.createElement('div');
          likesCounter.className = 'likes-counter';
          likesCounter.innerHTML = '♥ <span>' + likes_count + '</span>';
          metaInfo.appendChild(likesCounter);
          
          header.appendChild(metaInfo);
          
          // Add header to grid item
          gridItem.appendChild(header);
          
          // Content area
          const content = document.createElement('div');
          content.className = 'grid-content';
          
          // iframe container
          const iframeContainer = document.createElement('div');
          iframeContainer.className = 'iframe-container';
          
          // Create iframe to display the content
          const iframe = document.createElement('iframe');
          const directUrl = createDirectUrl(owner, name);
          iframe.src = directUrl;
          iframe.title = title;
          // Remove microphone permission
          iframe.allow = 'accelerometer; camera; encrypted-media; geolocation; gyroscope;';
          iframe.setAttribute('allowfullscreen', '');
          iframe.setAttribute('frameborder', '0');
          iframe.loading = 'lazy'; // Lazy load iframes for better performance
          
          // Track this space
          const spaceKey = `${owner}/${name}`;
          state.staticModeAttempted[spaceKey] = false;
          
          // Handle iframe loading errors
          iframe.onerror = function() {
            if (!state.staticModeAttempted[spaceKey]) {
              // Try static mode
              state.staticModeAttempted[spaceKey] = true;
              iframe.src = directUrl + '/index.html';
            } else {
              // If static mode also failed, show error
              handleIframeError(iframe, owner, name, title);
            }
          };
          
          // Advanced error handling for iframe load
          iframe.onload = function() {
            try {
              // Try to access iframe content to check if it loaded properly
              const iframeDoc = iframe.contentDocument || iframe.contentWindow.document;
              // Check if we got a 404 page or other error by looking for certain elements
              const isErrorPage = iframeDoc.title.includes('404') || 
                                 iframeDoc.body.textContent.includes('404') ||
                                 iframeDoc.body.textContent.includes('not found');
              
              if (isErrorPage && !state.staticModeAttempted[spaceKey]) {
                // If it's an error page and we haven't tried static mode yet
                state.staticModeAttempted[spaceKey] = true;
                iframe.src = directUrl + '/index.html';
              } else if (isErrorPage) {
                // If static mode already attempted and still failing
                handleIframeError(iframe, owner, name, title);
              }
            } catch (e) {
              // Cross-origin errors are expected, this generally means the iframe loaded
              // If we need to check for static mode, we do it based on other signals
              
              // We can try detecting failed loads by using a timer and checking if the iframe content is visible
              setTimeout(() => {
                // This is a basic heuristic - if the iframe still has no visible content after 5s, try static mode
                if (!state.staticModeAttempted[spaceKey] && 
                    (iframe.clientHeight < 10 || iframe.clientWidth < 10)) {
                  state.staticModeAttempted[spaceKey] = true;
                  iframe.src = directUrl + '/index.html';
                }
              }, 5000);
            }
          };
          
          iframeContainer.appendChild(iframe);
          content.appendChild(iframeContainer);
          
          // Actions section at bottom
          const actions = document.createElement('div');
          actions.className = 'grid-actions';
          
          // Open link
          const linkEl = document.createElement('a');
          linkEl.href = url;
          linkEl.target = '_blank';
          linkEl.className = 'open-link';
          linkEl.textContent = 'Open in new window';
          actions.appendChild(linkEl);
          
          // Add content and actions to grid item
          gridItem.appendChild(content);
          gridItem.appendChild(actions);
          
          // Add grid item to container
          elements.gridContainer.appendChild(gridItem);
        } catch (error) {
          console.error('Item rendering error:', error);
          // Continue rendering other items even if one fails
        }
      });
    }
    
    // Filter event listeners
    elements.searchInput.addEventListener('input', () => {
      // Debounce input to prevent API calls on every keystroke
      clearTimeout(state.searchTimeout);
      state.searchTimeout = setTimeout(() => loadSpaces(0), 300);
    });
    
    // Enter key in search box
    elements.searchInput.addEventListener('keyup', (event) => {
      if (event.key === 'Enter') {
        loadSpaces(0);
      }
    });
    
    // Refresh button event listener
    elements.refreshButton.addEventListener('click', () => loadSpaces(0));
    
    // Mac buttons functionality (just for show)
    document.querySelectorAll('.mac-button').forEach(button => {
      button.addEventListener('click', function(e) {
        e.preventDefault();
        // Mac buttons don't do anything, just for style
      });
    });
    
    // Page load complete event detection
    window.addEventListener('load', function() {
      // Start loading data when page is fully loaded
      setTimeout(() => loadSpaces(0), 500);
    });
    
    // Safety mechanism to prevent infinite loading
    setTimeout(() => {
      if (state.isLoading) {
        setLoading(false);
        elements.gridContainer.innerHTML = `
          <div style="grid-column: 1/-1; text-align: center; padding: 40px;">
            <div style="font-size: 3rem; margin-bottom: 20px;">⏱️</div>
            <h3 style="margin-bottom: 10px;">Loading is taking longer than expected</h3>
            <p style="color: #666;">Please try refreshing the page.</p>
            <button onClick="window.location.reload()" style="margin-top: 20px; padding: 10px 20px; background: var(--pastel-purple); border: none; border-radius: 5px; cursor: pointer;">
              Reload Page
            </button>
          </div>
        `;
      }
    }, 20000); // Force end loading state after 20 seconds
    
    // Start loading immediately - dual call with window.load for reliability
    loadSpaces(0);
  </script>
</body>
</html>
''')
    
    # Use port 7860 for Huggingface Spaces
    app.run(host='0.0.0.0', port=7860)