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import requests
import concurrent.futures
from flask import Flask, render_template_string, jsonify
from typing import List, Dict, Union
import base64
import os

app = Flask(__name__)

# 환경 변수에서 토큰 가져오기
HF_TOKEN = os.getenv("HF_TOKEN")

def get_headers():
    if not HF_TOKEN:
        raise ValueError("Hugging Face token not found in environment variables")
    return {"Authorization": f"Bearer {HF_TOKEN}"}

def get_most_liked_spaces(limit: int = 100) -> Union[List[Dict], str]:
    url = "https://huggingface.co/api/spaces"
    params = {
        "sort": "likes",
        "direction": -1,
        "limit": limit,
        "full": "true"
    }
    
    try:
        response = requests.get(url, params=params, headers=get_headers())
        response.raise_for_status()
        data = response.json()
        
        if isinstance(data, list):
            return data
        else:
            return f"Unexpected API response format: {type(data)}"
    except requests.RequestException as e:
        return f"API request error: {str(e)}"
    except ValueError as e:
        return f"JSON decoding error: {str(e)}"

def capture_thumbnail(space_id: str) -> str:
    screenshot_url = f"https://huggingface.co/spaces/{space_id}/screenshot.jpg"
    try:
        response = requests.get(screenshot_url, headers=get_headers())
        if response.status_code == 200:
            return base64.b64encode(response.content).decode('utf-8')
    except requests.RequestException:
        pass
    return ""

def get_app_py_content(space_id: str) -> str:
    app_py_url = f"https://huggingface.co/spaces/{space_id}/raw/main/app.py"
    try:
        response = requests.get(app_py_url, headers=get_headers())
        if response.status_code == 200:
            return response.text
        else:
            return f"app.py file not found or inaccessible for space: {space_id}"
    except requests.RequestException:
        return f"Error fetching app.py content for space: {space_id}"

def format_space(space: Dict) -> Dict:
    space_id = space.get('id', 'Unknown')
    space_name = space_id.split('/')[-1] if '/' in space_id else space_id
    
    space_author = space.get('author', 'Unknown')
    if isinstance(space_author, dict):
        space_author = space_author.get('user', space_author.get('name', 'Unknown'))
    
    space_likes = space.get('likes', 'N/A')
    space_url = f"https://huggingface.co/spaces/{space_id}"
    
    thumbnail = capture_thumbnail(space_id)
    
    return {
        "id": space_id,
        "name": space_name,
        "author": space_author,
        "likes": space_likes,
        "url": space_url,
        "thumbnail": thumbnail
    }

def format_spaces(spaces: Union[List[Dict], str]) -> List[Dict]:
    if isinstance(spaces, str):
        return [{"error": spaces}]
    
    with concurrent.futures.ThreadPoolExecutor(max_workers=10) as executor:
        return list(executor.map(format_space, spaces))

@app.route('/')
def index():
    try:
        spaces_list = get_most_liked_spaces()
        formatted_spaces = format_spaces(spaces_list)
    except ValueError as e:
        return str(e), 500

    html_template = """
    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Hugging Face Most Liked Spaces</title>
        <style>
            body { font-family: Arial, sans-serif; margin: 0; padding: 0; }
            .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
            .space-item { margin-bottom: 20px; }
            .space-item img { max-width: 200px; max-height: 200px; }
            .tab { overflow: hidden; border: 1px solid #ccc; background-color: #f1f1f1; }
            .tab button { background-color: inherit; float: left; border: none; outline: none; cursor: pointer; padding: 14px 16px; transition: 0.3s; }
            .tab button:hover { background-color: #ddd; }
            .tab button.active { background-color: #ccc; }
            .tabcontent { display: none; padding: 6px 12px; border: 1px solid #ccc; border-top: none; }
            pre { white-space: pre-wrap; word-wrap: break-word; }
        </style>
    </head>
    <body>
        <div class="container">
            <h1>Hugging Face Most Liked Spaces</h1>
            <div class="tab">
                <button class="tablinks active" onclick="openTab(event, 'MostLiked')">Most Liked</button>
                <button class="tablinks" onclick="openTab(event, 'AppContent')">App.py Content</button>
            </div>
            <div id="MostLiked" class="tabcontent" style="display: block;">
                <ol>
                {% for space in spaces %}
                    <li class="space-item">
                        <a href="{{ space.url }}" target="_blank">
                            {{ space.name }} by {{ space.author }} (Likes: {{ space.likes }})
                        </a>
                        {% if space.thumbnail %}
                            <br>
                            <img src="data:image/jpeg;base64,{{ space.thumbnail }}" alt="{{ space.name }} thumbnail">
                        {% endif %}
                    </li>
                {% endfor %}
                </ol>
            </div>
            <div id="AppContent" class="tabcontent">
                <h2>Select a space to view its app.py content:</h2>
                <select id="spaceSelector" onchange="showAppContent()">
                    <option value="">Select a space</option>
                    {% for space in spaces %}
                        <option value="{{ space.id }}">{{ space.name }} by {{ space.author }}</option>
                    {% endfor %}
                </select>
                <pre id="appContent"></pre>
            </div>
        </div>
        <script>
            function openTab(evt, tabName) {
                var i, tabcontent, tablinks;
                tabcontent = document.getElementsByClassName("tabcontent");
                for (i = 0; i < tabcontent.length; i++) {
                    tabcontent[i].style.display = "none";
                }
                tablinks = document.getElementsByClassName("tablinks");
                for (i = 0; i < tablinks.length; i++) {
                    tablinks[i].className = tablinks[i].className.replace(" active", "");
                }
                document.getElementById(tabName).style.display = "block";
                evt.currentTarget.className += " active";
            }
            function showAppContent() {
                var selector = document.getElementById("spaceSelector");
                var spaceId = selector.value;
                if (spaceId) {
                    fetch('/app_content/' + encodeURIComponent(spaceId))
                        .then(response => response.json())
                        .then(data => {
                            document.getElementById("appContent").textContent = data.content;
                        })
                        .catch(error => {
                            document.getElementById("appContent").textContent = "Error fetching app.py content: " + error;
                        });
                } else {
                    document.getElementById("appContent").textContent = "";
                }
            }
        </script>
    </body>
    </html>
    """
    
    return render_template_string(html_template, spaces=formatted_spaces)

@app.route('/app_content/<path:space_id>')
def app_content(space_id):
    try:
        content = get_app_py_content(space_id)
        return jsonify({'content': content})
    except ValueError as e:
        return jsonify({'error': str(e)}), 500

if __name__ == "__main__":
    app.run(host='0.0.0.0', port=7860)