app.py

import gradio as gr
import tempfile
import os
import requests
import json
import re
from bs4 import BeautifulSoup
from datetime import datetime
import urllib.parse
from pathlib import Path
from typing import List, Dict, Optional, Any, Tuple


# Configuration
SPACE_NAME = 'STEM Adventure Games'
SPACE_DESCRIPTION = 'Interactive choose your own adventure games'

# Default configuration values
DEFAULT_CONFIG = {
    'name': SPACE_NAME,
    'description': SPACE_DESCRIPTION,
    'system_prompt': "Simulate an interactive game-based learning experience through Choose Your Own STEM Adventure games featuring historically significant scientific experiments. Open each session with an unicode-styled arcade menu that reads 'STEM_ADV_GAMES` one stacked on top of the other. Underneath, frame the game in two sentences and widely sample 3-4 optional adventures from Wikipedia's List of Experiments. In the first stage, be brief and incrementally build more narrative content into the chat, immersing players in vivid historical moments written in second person (e.g. 'You are Galileo Galilei') that establish the year, location, prevailing beliefs, and tensions between established wisdom and emerging observations. Each section has 4 numbered decision points per stage that reflect experimental choices that subtly demonstrate a facet of the scientific method, with each choice meaningfully distinct in affording paths forward. Always end scenes with new branching choices that build a narrative progression based on concrete experimental procedures in laboratory environments. Offer backtracking options to emphasize how so-called failed experiments provide  insights, balancing historical accuracy with engaging gameplay that shows how systematic thinking and creative problem-solving combine in scientific breakthroughs. Simulate a playful tone and arcade-styled aesthetic to keep the experience fun and engaging, while still being educational.",
    'temperature': 0.9,
    'max_tokens': 750,
    'model': 'qwen/qwen3-30b-a3b-instruct-2507',
    'api_key_var': 'API_KEY',
    'theme': 'Default',
    'grounding_urls': ["https://en.wikipedia.org/wiki/List_of_experiments", "https://en.wikipedia.org/wiki/Scientific_method"],
    'enable_dynamic_urls': True,
    'enable_file_upload': True,
    'examples': ['Initiate adventure!', 'How do I play?', "What's the meaning of this?"],
    'locked': False
}

# Available themes with proper instantiation
AVAILABLE_THEMES = {
    "Default": gr.themes.Default(),
    "Soft": gr.themes.Soft(),
    "Glass": gr.themes.Glass(),
    "Monochrome": gr.themes.Monochrome(),
    "Base": gr.themes.Base()
}


class ConfigurationManager:
    """Manage configuration with validation and persistence"""
    
    def __init__(self):
        self.config_path = "config.json"
        self.backup_dir = "config_backups"
        self._config = None
    
    def load(self) -> Dict[str, Any]:
        """Load configuration from file with fallback to defaults"""
        try:
            with open(self.config_path, 'r') as f:
                self._config = json.load(f)
                print("✅ Loaded configuration from config.json")
                return self._config
        except FileNotFoundError:
            print("ℹ️ No config.json found, using default configuration")
            self._config = DEFAULT_CONFIG.copy()
            self.save(self._config)
            return self._config
        except Exception as e:
            print(f"⚠️ Error loading config.json: {e}, using defaults")
            self._config = DEFAULT_CONFIG.copy()
            return self._config
    
    def save(self, config: Dict[str, Any]) -> bool:
        """Save configuration with automatic backup"""
        try:
            # Create backup if config exists
            if os.path.exists(self.config_path):
                self._create_backup()
            
            # Save new configuration
            with open(self.config_path, 'w') as f:
                json.dump(config, f, indent=2)
            
            self._config = config
            return True
        except Exception as e:
            print(f"❌ Error saving configuration: {e}")
            return False
    
    def _create_backup(self):
        """Create timestamped backup"""
        try:
            os.makedirs(self.backup_dir, exist_ok=True)
            timestamp = datetime.now().strftime('%Y%m%d_%H%M%S')
            backup_path = os.path.join(self.backup_dir, f"config_{timestamp}.json")
            
            with open(self.config_path, 'r') as source:
                config_data = json.load(source)
                with open(backup_path, 'w') as backup:
                    json.dump(config_data, backup, indent=2)
            
            self._cleanup_old_backups()
        except Exception as e:
            print(f"⚠️ Error creating backup: {e}")
    
    def _cleanup_old_backups(self, keep=10):
        """Keep only the most recent backups"""
        try:
            backups = sorted([
                f for f in os.listdir(self.backup_dir)
                if f.startswith('config_') and f.endswith('.json')
            ])
            
            if len(backups) > keep:
                for old_backup in backups[:-keep]:
                    os.remove(os.path.join(self.backup_dir, old_backup))
        except Exception as e:
            print(f"⚠️ Error cleaning up backups: {e}")
    
    def get(self, key: str, default: Any = None) -> Any:
        """Get configuration value"""
        if self._config is None:
            self.load()
        return self._config.get(key, default)


# Initialize configuration manager
config_manager = ConfigurationManager()
config = config_manager.load()

# Load configuration values
SPACE_NAME = config.get('name', DEFAULT_CONFIG['name'])
SPACE_DESCRIPTION = config.get('description', DEFAULT_CONFIG['description'])
SYSTEM_PROMPT = config.get('system_prompt', DEFAULT_CONFIG['system_prompt'])
temperature = config.get('temperature', DEFAULT_CONFIG['temperature'])
max_tokens = config.get('max_tokens', DEFAULT_CONFIG['max_tokens'])
MODEL = config.get('model', DEFAULT_CONFIG['model'])
THEME = config.get('theme', DEFAULT_CONFIG['theme'])
GROUNDING_URLS = config.get('grounding_urls', DEFAULT_CONFIG['grounding_urls'])
ENABLE_DYNAMIC_URLS = config.get('enable_dynamic_urls', DEFAULT_CONFIG['enable_dynamic_urls'])
ENABLE_FILE_UPLOAD = config.get('enable_file_upload', DEFAULT_CONFIG.get('enable_file_upload', True))

# Environment variables
ACCESS_CODE = os.environ.get("ACCESS_CODE")
API_KEY_VAR = config.get('api_key_var', DEFAULT_CONFIG['api_key_var'])
API_KEY = os.environ.get(API_KEY_VAR, "").strip() or None
HF_TOKEN = os.environ.get('HF_TOKEN', '')
SPACE_ID = os.environ.get('SPACE_ID', '')


# Utility functions
def validate_api_key() -> bool:
    """Validate API key configuration"""
    if not API_KEY:
        print(f"⚠️  API KEY CONFIGURATION ERROR:")
        print(f"   Variable name: {API_KEY_VAR}")
        print(f"   Status: Not set or empty")
        print(f"   Action needed: Set '{API_KEY_VAR}' in HuggingFace Space secrets")
        return False
    elif not API_KEY.startswith('sk-or-'):
        print(f"⚠️  API KEY FORMAT WARNING:")
        print(f"   Variable name: {API_KEY_VAR}")
        print(f"   Note: OpenRouter keys should start with 'sk-or-'")
        return True
    else:
        print(f"✅ API Key configured successfully")
        return True


def validate_url_domain(url: str) -> bool:
    """Validate URL domain"""
    try:
        from urllib.parse import urlparse
        parsed = urlparse(url)
        return bool(parsed.netloc and parsed.scheme in ['http', 'https'])
    except:
        return False


def fetch_url_content(url: str) -> str:
    """Fetch and convert URL content to text"""
    try:
        if not validate_url_domain(url):
            return f"❌ Invalid URL format: {url}"
        
        headers = {
            'User-Agent': 'Mozilla/5.0 (compatible; HuggingFace-Space/1.0)'
        }
        
        response = requests.get(url, headers=headers, timeout=5)
        response.raise_for_status()
        
        content_type = response.headers.get('content-type', '').lower()
        
        if 'text/html' in content_type:
            soup = BeautifulSoup(response.text, 'html.parser')
            
            # Remove script and style elements
            for script in soup(["script", "style"]):
                script.extract()
            
            # Get text content
            text = soup.get_text(separator=' ', strip=True)
            
            # Clean up whitespace
            text = ' '.join(text.split())
            
            # Limit content length
            if len(text) > 3000:
                text = text[:3000] + "... [truncated]"
            
            return f"📄 Content from {url}:\n{text}\n"
        
        elif any(ct in content_type for ct in ['text/plain', 'application/json']):
            text = response.text
            if len(text) > 3000:
                text = text[:3000] + "... [truncated]"
            return f"📄 Content from {url}:\n{text}\n"
        
        else:
            return f"⚠️ Unsupported content type at {url}: {content_type}"
            
    except requests.exceptions.Timeout:
        return f"⏱️ Timeout accessing {url}"
    except requests.exceptions.RequestException as e:
        return f"❌ Error accessing {url}: {str(e)}"
    except Exception as e:
        return f"❌ Unexpected error with {url}: {str(e)}"


def extract_urls_from_text(text: str) -> List[str]:
    """Extract URLs from message text"""
    url_pattern = r'https?://[^\s<>"{}|\\^`\[\]]+(?:\.[^\s<>"{}|\\^`\[\]])*'
    urls = re.findall(url_pattern, text)
    return [url.rstrip('.,;:)?!') for url in urls]


def process_file_upload(file_path: str) -> str:
    """Process uploaded file with Gradio best practices"""
    if not file_path or not os.path.exists(file_path):
        return "❌ File not found"
    
    try:
        file_size = os.path.getsize(file_path)
        file_name = os.path.basename(file_path)
        _, ext = os.path.splitext(file_path.lower())
        
        # Text file extensions
        text_extensions = {
            '.txt', '.md', '.markdown', '.rst',
            '.py', '.js', '.jsx', '.ts', '.tsx', '.json', '.yaml', '.yml',
            '.html', '.htm', '.xml', '.css', '.scss',
            '.java', '.c', '.cpp', '.h', '.cs', '.go', '.rs',
            '.sh', '.bash', '.log', '.csv', '.sql'
        }
        
        max_chars = 5000  # Define max_chars limit for file reading
        
        if ext in text_extensions:
            with open(file_path, 'r', encoding='utf-8', errors='ignore') as f:
                content = f.read(max_chars)
                if len(content) == max_chars:
                    content += "\n... [truncated]"
                return f"📄 **{file_name}** ({file_size:,} bytes)\n```{ext[1:]}\n{content}\n```"
        
        # Special file types
        elif ext == '.pdf':
            return f"📑 **{file_name}** (PDF, {file_size:,} bytes)\n⚠️ PDF support requires PyPDF2"
        elif ext in {'.jpg', '.jpeg', '.png', '.gif', '.webp'}:
            return f"🖼️ **{file_name}** (Image, {file_size:,} bytes)"
        elif ext in {'.xlsx', '.xls'}:
            return f"📊 **{file_name}** (Spreadsheet, {file_size:,} bytes)"
        elif ext in {'.zip', '.tar', '.gz', '.rar'}:
            return f"🗜️ **{file_name}** (Archive, {file_size:,} bytes)"
        else:
            return f"📎 **{file_name}** ({ext or 'no extension'}, {file_size:,} bytes)"
            
    except Exception as e:
        return f"❌ Error processing file: {str(e)}"


# URL content cache
_url_content_cache = {}


def get_grounding_context() -> str:
    """Get grounding context from configured URLs with caching"""
    urls = GROUNDING_URLS
    if isinstance(urls, str):
        try:
            urls = json.loads(urls)
        except:
            return ""
    
    if not urls:
        return ""
    
    context_parts = ["📚 **Reference Context:**\n"]
    
    for i, url in enumerate(urls[:2], 1):  # Primary URLs only
        if url in _url_content_cache:
            content = _url_content_cache[url]
        else:
            content = fetch_url_content(url)
            _url_content_cache[url] = content
        
        if not content.startswith("❌") and not content.startswith("⏱️"):
            context_parts.append(f"\n**Source {i}:** {content}")
    
    if len(context_parts) > 1:
        return "\n".join(context_parts)
    return ""


def export_conversation_to_markdown(history: List[Dict[str, str]]) -> str:
    """Export conversation history to markdown"""
    if not history:
        return "No conversation to export."
    
    markdown_content = f"""# Conversation Export
Generated on: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}
Space: {SPACE_NAME}
Model: {MODEL}

---

"""
    
    message_count = 0
    for message in history:
        if isinstance(message, dict):
            role = message.get('role', 'unknown')
            content = message.get('content', '')
            
            if role == 'user':
                message_count += 1
                markdown_content += f"## User Message {message_count}\n\n{content}\n\n"
            elif role == 'assistant':
                markdown_content += f"## Assistant Response {message_count}\n\n{content}\n\n---\n\n"
    
    return markdown_content


def generate_response(message: str, history: List[Dict[str, str]], files: Optional[List] = None) -> str:
    """Generate response using OpenRouter API with file support"""
    
    # API key validation
    if not API_KEY:
        return f"""🔑 **API Key Required**

Please configure your OpenRouter API key:
1. Go to Settings (⚙️) in your HuggingFace Space
2. Click 'Variables and secrets'
3. Add secret: **{API_KEY_VAR}**
4. Value: Your OpenRouter API key (starts with `sk-or-`)

Get your API key at: https://openrouter.ai/keys"""
    
    # Process files if provided
    file_context = ""
    file_notification = ""
    
    if files:
        file_contents = []
        file_names = []
        
        for file_info in files:
            if isinstance(file_info, dict):
                file_path = file_info.get('path', file_info.get('name', ''))
            else:
                file_path = str(file_info)
            
            if file_path and os.path.exists(file_path):
                try:
                    content = process_file_upload(file_path)
                    file_contents.append(content)
                    file_names.append(os.path.basename(file_path))
                    print(f"📄 Processed file: {os.path.basename(file_path)}")
                except Exception as e:
                    print(f"❌ Error processing file: {e}")
        
        if file_contents:
            file_context = "\n\n[UPLOADED FILES]\n" + "\n\n".join(file_contents) + "\n"
            file_notification = f"\n\n[Note: Uploaded files: {', '.join(file_names)}]"
    
    # Get grounding context
    grounding_context = get_grounding_context()
    
    # Check for dynamic URLs in message
    if ENABLE_DYNAMIC_URLS:
        urls_in_message = extract_urls_from_text(message)
        if urls_in_message:
            print(f"🔗 Found {len(urls_in_message)} URLs in message")
            dynamic_context = "\n📎 **Dynamic Context:**\n"
            for url in urls_in_message[:3]:  # Limit to 3 URLs
                content = fetch_url_content(url)
                if not content.startswith("❌"):
                    dynamic_context += f"\n{content}"
            grounding_context += dynamic_context
    
    # Build messages
    messages = [{"role": "system", "content": SYSTEM_PROMPT}]
    
    # Add conversation history
    for msg in history:
        if isinstance(msg, dict) and 'role' in msg and 'content' in msg:
            messages.append({
                "role": msg['role'],
                "content": msg['content']
            })
    
    # Add current message with context
    full_message = message
    if grounding_context:
        full_message = f"{grounding_context}\n\n{message}"
    if file_context:
        full_message = f"{file_context}\n\n{full_message}"
    
    messages.append({
        "role": "user",
        "content": full_message
    })
    
    # Make API request
    try:
        # Make API request
        headers = {
            "Authorization": f"Bearer {API_KEY}",
            "Content-Type": "application/json",
            "HTTP-Referer": f"https://huggingface.co/spaces/{SPACE_ID}" if SPACE_ID else "https://huggingface.co",
            "X-Title": SPACE_NAME
        }
        
        data = {
            "model": MODEL,
            "messages": messages,
            "temperature": temperature,
            "max_tokens": max_tokens,
            "stream": False
        }
        
        response = requests.post(
            "https://openrouter.ai/api/v1/chat/completions",
            headers=headers,
            json=data,
            timeout=30
        )
        
        if response.status_code == 200:
            result = response.json()
            ai_response = result['choices'][0]['message']['content']
            
            # Add file notification if files were uploaded
            if file_notification:
                ai_response += file_notification
            
            return ai_response
        else:
            error_data = response.json()
            error_message = error_data.get('error', {}).get('message', 'Unknown error')
            return f"❌ API Error ({response.status_code}): {error_message}"
            
    except requests.exceptions.Timeout:
        return "⏰ Request timeout (30s limit). Try a shorter message or different model."
    except requests.exceptions.ConnectionError:
        return "🌐 Connection error. Check your internet connection and try again."
    except Exception as e:
        return f"❌ Error: {str(e)}"


# Chat history for export
chat_history_store = []


def verify_hf_token_access() -> Tuple[bool, str]:
    """Verify HuggingFace token and access"""
    if not HF_TOKEN:
        return False, "No HF_TOKEN found"
    
    if not SPACE_ID:
        return False, "No SPACE_ID found - running locally?"
    
    try:
        headers = {"Authorization": f"Bearer {HF_TOKEN}"}
        response = requests.get(
            f"https://huggingface.co/api/spaces/{SPACE_ID}",
            headers=headers,
            timeout=5
        )
        if response.status_code == 200:
            return True, f"HF Token valid for {SPACE_ID}"
        else:
            return False, f"HF Token invalid or no access to {SPACE_ID}"
    except Exception as e:
        return False, f"Error verifying HF token: {str(e)}"


# Create main interface with clean tab structure
def create_interface():
    """Create the Gradio interface with clean tab structure"""
    
    # Get theme
    theme = AVAILABLE_THEMES.get(THEME, gr.themes.Default())
    
    # Validate API key on startup
    API_KEY_VALID = validate_api_key()
    
    # Check HuggingFace access
    HF_ACCESS_VALID, HF_ACCESS_MESSAGE = verify_hf_token_access()
    
    # Access control check
    has_access = ACCESS_CODE is None  # No access code required
    
    with gr.Blocks(title=SPACE_NAME, theme=theme) as demo:
        # State for access control
        access_granted = gr.State(has_access)
        
        # Header - always visible
        gr.Markdown(f"# {SPACE_NAME}")
        gr.Markdown(SPACE_DESCRIPTION)
        
        # Access control panel (visible when access not granted)
        with gr.Column(visible=(not has_access)) as access_panel:
            gr.Markdown("### 🔐 Access Required")
            gr.Markdown("Please enter the access code:")
            
            with gr.Row():
                access_input = gr.Textbox(
                    label="Access Code",
                    placeholder="Enter access code...",
                    type="password",
                    scale=3
                )
                access_btn = gr.Button("Submit", variant="primary", scale=1)
            
            access_status = gr.Markdown()
        
        # Main interface (visible when access granted)
        with gr.Column(visible=has_access) as main_panel:
            with gr.Tabs() as tabs:
                # Chat Tab
                with gr.Tab("💬 Chat"):
                    # Get examples
                    examples = config.get('examples', [])
                    if isinstance(examples, str):
                        try:
                            examples = json.loads(examples)
                        except:
                            examples = []
                    
                    # State to hold uploaded files
                    uploaded_files = gr.State([])
                    
                    # Create chat interface
                    chatbot = gr.Chatbot(type="messages", height=400)
                    msg = gr.Textbox(label="Message", placeholder="Type your message here...", lines=2)
                    
                    with gr.Row():
                        submit_btn = gr.Button("Send", variant="primary")
                        clear_btn = gr.Button("Clear")
                    
                    # Export functionality
                    with gr.Row():
                        export_btn = gr.DownloadButton(
                            "📥 Export Conversation",
                            variant="secondary",
                            size="sm"
                        )
                    
                    # Export handler
                    def prepare_export():
                        if not chat_history_store:
                            return None
                        
                        content = export_conversation_to_markdown(chat_history_store)
                        
                        # Create filename
                        space_name_safe = re.sub(r'[^a-zA-Z0-9]+', '_', SPACE_NAME).lower()
                        timestamp = datetime.now().strftime('%Y%m%d_%H%M%S')
                        filename = f"{space_name_safe}_conversation_{timestamp}.md"
                        
                        # Save to temp file
                        temp_path = Path(tempfile.gettempdir()) / filename
                        temp_path.write_text(content, encoding='utf-8')
                        
                        return str(temp_path)
                    
                    export_btn.click(
                        prepare_export,
                        outputs=[export_btn]
                    )
                    
                    # Examples section
                    if examples:
                        gr.Examples(examples=examples, inputs=msg)
                    
                    # Chat functionality
                    def respond(message, chat_history, files_state, is_granted):
                        if not is_granted:
                            return chat_history, "", is_granted
                        
                        if not message:
                            return chat_history, "", is_granted
                        
                        # Format history for the generate_response function
                        formatted_history = []
                        for h in chat_history:
                            if isinstance(h, dict):
                                formatted_history.append(h)
                        
                        # Get response
                        response = generate_response(message, formatted_history, files_state)
                        
                        # Update chat history
                        chat_history = chat_history + [
                            {"role": "user", "content": message},
                            {"role": "assistant", "content": response}
                        ]
                        
                        # Update stored history for export
                        global chat_history_store
                        chat_history_store = chat_history
                        
                        return chat_history, "", is_granted
                    
                    # Wire up the interface
                    msg.submit(respond, [msg, chatbot, uploaded_files, access_granted], [chatbot, msg, access_granted])
                    submit_btn.click(respond, [msg, chatbot, uploaded_files, access_granted], [chatbot, msg, access_granted])
                    clear_btn.click(lambda: ([], ""), outputs=[chatbot, msg])
                    
                    # File upload accordion
                    if ENABLE_FILE_UPLOAD:
                        with gr.Accordion("📎 Upload Files", open=False):
                            file_upload = gr.File(
                                label="Upload Files",
                                file_types=None,
                                file_count="multiple",
                                visible=True,
                                interactive=True
                            )
                            clear_files_btn = gr.Button("Clear Files", size="sm", variant="secondary")
                            uploaded_files_display = gr.Markdown("", visible=False)
                            
                            def handle_file_upload(files):
                                if not files:
                                    return [], "", gr.update(visible=False)
                                
                                file_names = []
                                for file_info in files:
                                    if isinstance(file_info, dict):
                                        file_path = file_info.get('path', file_info.get('name', ''))
                                    else:
                                        file_path = str(file_info)
                                    
                                    if file_path and os.path.exists(file_path):
                                        file_names.append(os.path.basename(file_path))
                                
                                if file_names:
                                    display_text = f"📎 **Uploaded files:** {', '.join(file_names)}"
                                    return files, display_text, gr.update(visible=True)
                                return [], "", gr.update(visible=False)
                            
                            def clear_files():
                                return None, [], "", gr.update(visible=False)
                            
                            file_upload.change(
                                handle_file_upload,
                                inputs=[file_upload],
                                outputs=[uploaded_files, uploaded_files_display, uploaded_files_display]
                            )
                            
                            clear_files_btn.click(
                                clear_files,
                                outputs=[file_upload, uploaded_files, uploaded_files_display, uploaded_files_display]
                            )
                    
                    # Configuration accordion
                    with gr.Accordion("ℹ️ Configuration", open=False):
                        gr.JSON(
                            value=config,
                            label="config.json",
                            show_label=True
                        )
                
                # Configuration Tab
                with gr.Tab("⚙️ Configuration"):
                    gr.Markdown("## Configuration Management")
                    
                    # Show authentication status
                    if HF_ACCESS_VALID:
                        gr.Markdown(f"✅ {HF_ACCESS_MESSAGE}")
                        gr.Markdown("Configuration changes will be saved to the HuggingFace repository.")
                    else:
                        gr.Markdown(f"ℹ️ {HF_ACCESS_MESSAGE}")
                        gr.Markdown("Set HF_TOKEN in Space secrets to enable auto-save.")
                    
                    # Configuration editor
                    gr.Markdown("### ⚙️ Configuration Editor")
                    
                    # Show lock status if locked
                    if config.get('locked', False):
                        gr.Markdown("⚠️ **Note:** Configuration is locked.")
                    
                    # Basic settings
                    with gr.Column():
                        edit_name = gr.Textbox(
                            label="Space Name",
                            value=config.get('name', ''),
                            max_lines=1
                        )
                        edit_model = gr.Dropdown(
                            label="Model",
                            choices=[
                                "google/gemini-2.0-flash-001",
                                "google/gemma-3-27b-it",
                                "anthropic/claude-3.5-sonnet",
                                "anthropic/claude-3.5-haiku",
                                "openai/gpt-4o-mini-search-preview",
                                "openai/gpt-4.1-nano",
                                "nvidia/llama-3.1-nemotron-70b-instruct",
                                "qwen/qwen3-30b-a3b-instruct-2507"
                            ],
                            value=config.get('model', ''),
                            allow_custom_value=True
                        )
                        
                        edit_description = gr.Textbox(
                            label="Description",
                            value=config.get('description', ''),
                            max_lines=2
                        )
                        
                        edit_system_prompt = gr.Textbox(
                            label="System Prompt",
                            value=config.get('system_prompt', ''),
                            lines=5
                        )
                        
                        with gr.Row():
                            edit_temperature = gr.Slider(
                                label="Temperature",
                                minimum=0,
                                maximum=2,
                                value=config.get('temperature', 0.7),
                                step=0.1
                            )
                            edit_max_tokens = gr.Slider(
                                label="Max Tokens",
                                minimum=50,
                                maximum=4096,
                                value=config.get('max_tokens', 750),
                                step=50
                            )
                        
                        edit_examples = gr.Textbox(
                            label="Example Prompts (one per line)",
                            value='\n'.join(config.get('examples', [])),
                            lines=3
                        )
                        
                        # URL Grounding
                        gr.Markdown("### URL Grounding")
                        edit_grounding_urls = gr.Textbox(
                            label="Grounding URLs (one per line)",
                            placeholder="https://example.com/docs\nhttps://example.com/api",
                            value='\n'.join(config.get('grounding_urls', [])),
                            lines=5,
                            info="Add URLs to provide context. First 2 URLs are primary sources."
                        )
                        
                        with gr.Row():
                            edit_enable_dynamic_urls = gr.Checkbox(
                                label="Enable Dynamic URL Extraction",
                                value=config.get('enable_dynamic_urls', True),
                                info="Extract and fetch URLs from user messages"
                            )
                            edit_enable_file_upload = gr.Checkbox(
                                label="Enable File Upload",
                                value=config.get('enable_file_upload', True),
                                info="Allow users to upload files for context"
                            )
                        
                        # Configuration actions
                        with gr.Row():
                            save_btn = gr.Button("💾 Save Configuration", variant="primary")
                            reset_btn = gr.Button("↩️ Reset to Defaults", variant="secondary")
                        
                        config_status = gr.Markdown()
                        
                        def save_configuration(name, description, system_prompt, model, temp, tokens, examples, grounding_urls, enable_dynamic_urls, enable_file_upload):
                            """Save updated configuration"""
                            try:
                                updated_config = config.copy()
                                updated_config.update({
                                    'name': name,
                                    'description': description,
                                    'system_prompt': system_prompt,
                                    'model': model,
                                    'temperature': temp,
                                    'max_tokens': int(tokens),
                                    'examples': [ex.strip() for ex in examples.split('\n') if ex.strip()],
                                    'grounding_urls': [url.strip() for url in grounding_urls.split('\n') if url.strip()],
                                    'enable_dynamic_urls': enable_dynamic_urls,
                                    'enable_file_upload': enable_file_upload,
                                    'locked': config.get('locked', False)
                                })
                                
                                if config_manager.save(updated_config):
                                    # Auto-commit if HF token is available
                                    if HF_TOKEN and SPACE_ID:
                                        try:
                                            from huggingface_hub import HfApi, CommitOperationAdd
                                            api = HfApi(token=HF_TOKEN)
                                            
                                            operations = [
                                                CommitOperationAdd(
                                                    path_or_fileobj=config_manager.config_path,
                                                    path_in_repo="config.json"
                                                )
                                            ]
                                            
                                            api.create_commit(
                                                repo_id=SPACE_ID,
                                                operations=operations,
                                                commit_message="Update configuration via web UI",
                                                commit_description=f"Configuration update at {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}",
                                                repo_type="space",
                                                token=HF_TOKEN
                                            )
                                            return "✅ Configuration saved and committed to repository!"
                                        except Exception as e:
                                            return f"✅ Configuration saved locally. ⚠️ Auto-commit failed: {str(e)}"
                                    else:
                                        return "✅ Configuration saved locally (no HF token for auto-commit)"
                                else:
                                    return "❌ Failed to save configuration"
                                    
                            except Exception as e:
                                return f"❌ Error: {str(e)}"
                        
                        save_btn.click(
                            save_configuration,
                            inputs=[edit_name, edit_description, edit_system_prompt, edit_model, 
                                   edit_temperature, edit_max_tokens, edit_examples, edit_grounding_urls,
                                   edit_enable_dynamic_urls, edit_enable_file_upload],
                            outputs=[config_status]
                        )
                        
                        def reset_configuration():
                            """Reset to default configuration"""
                            try:
                                if config_manager.save(DEFAULT_CONFIG):
                                    return (
                                        DEFAULT_CONFIG['name'],
                                        DEFAULT_CONFIG['description'],
                                        DEFAULT_CONFIG['system_prompt'],
                                        DEFAULT_CONFIG['model'],
                                        DEFAULT_CONFIG['temperature'],
                                        DEFAULT_CONFIG['max_tokens'],
                                        '\n'.join(DEFAULT_CONFIG['examples']),
                                        '\n'.join(DEFAULT_CONFIG['grounding_urls']),
                                        DEFAULT_CONFIG['enable_dynamic_urls'],
                                        DEFAULT_CONFIG['enable_file_upload'],
                                        "✅ Reset to default configuration"
                                    )
                                else:
                                    return (*[gr.update() for _ in range(10)], "❌ Failed to reset")
                            except Exception as e:
                                return (*[gr.update() for _ in range(10)], f"❌ Error: {str(e)}")
                        
                        reset_btn.click(
                            reset_configuration,
                            outputs=[edit_name, edit_description, edit_system_prompt, edit_model, 
                                    edit_temperature, edit_max_tokens, edit_examples, edit_grounding_urls,
                                    edit_enable_dynamic_urls, edit_enable_file_upload, config_status]
                        )
        
        # Access control handler
        if ACCESS_CODE:
            def handle_access(code, current_state):
                if code == ACCESS_CODE:
                    return (
                        gr.update(visible=False),  # Hide access panel
                        gr.update(visible=True),   # Show main panel
                        gr.update(value="✅ Access granted!"),  # Status message
                        True  # Update state
                    )
                else:
                    return (
                        gr.update(visible=True),   # Keep access panel visible
                        gr.update(visible=False),  # Keep main panel hidden
                        gr.update(value="❌ Invalid access code. Please try again."),  # Status message
                        False  # State remains false
                    )
            
            access_btn.click(
                handle_access,
                inputs=[access_input, access_granted],
                outputs=[access_panel, main_panel, access_status, access_granted]
            )
            
            access_input.submit(
                handle_access,
                inputs=[access_input, access_granted],
                outputs=[access_panel, main_panel, access_status, access_granted]
            )
    
    return demo


# Create and launch the interface
if __name__ == "__main__":
    demo = create_interface()
    demo.launch()