# app.py

import gradio as gr
from bs4 import BeautifulSoup
from sentence_transformers import SentenceTransformer
import faiss
import numpy as np
import asyncio
import aiohttp
import re
import base64
import logging
import os
import sys

# Import OpenAI library
import openai

# Set up logging to output to the console
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)

# Create a console handler
console_handler = logging.StreamHandler(sys.stdout)
console_handler.setLevel(logging.INFO)

# Create a formatter and set it for the handler
formatter = logging.Formatter('%(asctime)s %(levelname)s %(name)s %(message)s')
console_handler.setFormatter(formatter)

# Add the handler to the logger
logger.addHandler(console_handler)

# Initialize models and variables
logger.info("Initializing models and variables")
embedding_model = SentenceTransformer('all-MiniLM-L6-v2')
faiss_index = None
bookmarks = []
fetch_cache = {}

# Define the categories
CATEGORIES = [
    "Social Media",
    "News and Media",
    "Education and Learning",
    "Entertainment",
    "Shopping and E-commerce",
    "Finance and Banking",
    "Technology",
    "Health and Fitness",
    "Travel and Tourism",
    "Food and Recipes",
    "Sports",
    "Arts and Culture",
    "Government and Politics",
    "Business and Economy",
    "Science and Research",
    "Personal Blogs and Journals",
    "Job Search and Careers",
    "Music and Audio",
    "Videos and Movies",
    "Reference and Knowledge Bases",
    "Dead Link",
    "Uncategorized",
]

# Set up Groq Cloud API key and base URL
GROQ_API_KEY = os.getenv('GROQ_API_KEY')

if not GROQ_API_KEY:
    logger.error("GROQ_API_KEY environment variable not set.")

# Set OpenAI API key and base URL to use Groq Cloud API
openai.api_key = GROQ_API_KEY
openai.api_base = "https://api.groq.com/openai/v1"

def extract_main_content(soup):
    """
    Extract the main content from a webpage while filtering out boilerplate content.
    """
    # Remove script and style elements
    for element in soup(['script', 'style', 'header', 'footer', 'nav', 'ads', 'sidebar']):
        element.decompose()
    
    # Get text from specific content tags first
    main_content_tags = soup.find_all(['article', 'main', 'div.content', 'div.post'])
    if main_content_tags:
        content = ' '.join([tag.get_text(strip=True, separator=' ') for tag in main_content_tags])
    else:
        # Fallback to body content
        content = soup.body.get_text(strip=True, separator=' ') if soup.body else soup.get_text(strip=True, separator=' ')
    
    # Clean up the text
    content = ' '.join(content.split())
    # Limit content length to avoid token limits
    return content[:3000]

def get_page_metadata(soup):
    """
    Extract metadata from the webpage including title, description, and keywords.
    """
    metadata = {
        'title': '',
        'description': '',
        'keywords': ''
    }
    
    # Get title
    title_tag = soup.find('title')
    if title_tag:
        metadata['title'] = title_tag.string.strip()
    
    # Get meta description
    meta_desc = soup.find('meta', attrs={'name': 'description'}) or \
                soup.find('meta', attrs={'property': 'og:description'})
    if meta_desc:
        metadata['description'] = meta_desc.get('content', '').strip()
    
    # Get meta keywords
    meta_keywords = soup.find('meta', attrs={'name': 'keywords'})
    if meta_keywords:
        metadata['keywords'] = meta_keywords.get('content', '').strip()
    
    return metadata

def generate_summary(bookmark):
    """
    Generate a comprehensive summary for a bookmark using available content and LLM.
    """
    logger.info(f"Generating summary for bookmark: {bookmark.get('url')}")
    
    try:
        # Get the HTML soup object from the bookmark if it exists
        soup = BeautifulSoup(bookmark.get('html_content', ''), 'html.parser')
        
        # Step 1: Try to get description from metadata
        metadata = get_page_metadata(soup)
        if metadata['description']:
            logger.info("Using meta description for summary")
            bookmark['summary'] = metadata['description']
            return bookmark
        
        # Step 2: If no description, extract main content
        content = extract_main_content(soup)
        if not content:
            logger.warning("No content extracted from page")
            # Fallback to title if available
            if metadata['title']:
                bookmark['summary'] = f"Page title: {metadata['title']}"
                return bookmark
            
            bookmark['summary'] = bookmark.get('title', 'No summary available.')
            return bookmark
        
        # Step 3: Generate summary using LLM
        try:
            # Prepare context for LLM
            prompt = f"""
            Webpage Title: {metadata['title']}
            Keywords: {metadata['keywords']}
            
            Content:
            {content}
            
            Please provide a concise summary (2-3 sentences) of this webpage's main content.
            Focus on what the page is about and its key information. Be factual and objective.
            """
            
            response = openai.ChatCompletion.create(
                model='llama3-8b-8192',
                messages=[
                    {"role": "system", "content": "You are a helpful assistant that creates concise webpage summaries."},
                    {"role": "user", "content": prompt}
                ],
                max_tokens=150,
                temperature=0.5,
            )
            
            summary = response['choices'][0]['message']['content'].strip()
            logger.info("Successfully generated LLM summary")
            bookmark['summary'] = summary
            return bookmark
            
        except Exception as e:
            logger.error(f"Error generating LLM summary: {e}")
            # Fallback to extracted content
            bookmark['summary'] = ' '.join(content.split()[:50]) + '...'
            return bookmark
            
    except Exception as e:
        logger.error(f"Error in generate_summary: {e}")
        # Final fallback
        bookmark['summary'] = bookmark.get('title', 'No summary available.')
        return bookmark

def parse_bookmarks(file_content):
    """
    Parse bookmarks from HTML file.
    """
    logger.info("Parsing bookmarks")
    try:
        soup = BeautifulSoup(file_content, 'html.parser')
        extracted_bookmarks = []
        for link in soup.find_all('a'):
            url = link.get('href')
            title = link.text.strip()
            if url and title:
                extracted_bookmarks.append({'url': url, 'title': title})
        logger.info(f"Extracted {len(extracted_bookmarks)} bookmarks")
        return extracted_bookmarks
    except Exception as e:
        logger.error("Error parsing bookmarks: %s", e)
        raise

async def fetch_url_info(session, bookmark):
    """
    Fetch information about a URL asynchronously.
    """
    url = bookmark['url']
    if url in fetch_cache:
        bookmark.update(fetch_cache[url])
        return bookmark

    try:
        logger.info(f"Fetching URL info for: {url}")
        async with session.get(url, timeout=10) as response:
            bookmark['etag'] = response.headers.get('ETag', 'N/A')
            bookmark['status_code'] = response.status

            if response.status >= 400:
                bookmark['dead_link'] = True
                bookmark['description'] = ''
                logger.warning(f"Dead link detected: {url} with status {response.status}")
            else:
                bookmark['dead_link'] = False
                content = await response.text()
                bookmark['html_content'] = content
                bookmark['description'] = ''  # Will be set by generate_summary function
                logger.info(f"Fetched information for {url}")
    except Exception as e:
        bookmark['dead_link'] = True
        bookmark['etag'] = 'N/A'
        bookmark['status_code'] = 'N/A'
        bookmark['description'] = ''
        bookmark['html_content'] = ''
        logger.error(f"Error fetching URL info for {url}: {e}")
    finally:
        fetch_cache[url] = {
            'etag': bookmark.get('etag'),
            'status_code': bookmark.get('status_code'),
            'dead_link': bookmark.get('dead_link'),
            'description': bookmark.get('description'),
            'html_content': bookmark.get('html_content', '')
        }
    return bookmark

async def process_bookmarks_async(bookmarks_list):
    """
    Process all bookmarks asynchronously.
    """
    logger.info("Processing bookmarks asynchronously")
    try:
        async with aiohttp.ClientSession() as session:
            tasks = []
            for bookmark in bookmarks_list:
                task = asyncio.ensure_future(fetch_url_info(session, bookmark))
                tasks.append(task)
            await asyncio.gather(*tasks)
        logger.info("Completed processing bookmarks asynchronously")
    except Exception as e:
        logger.error(f"Error in asynchronous processing of bookmarks: {e}")
        raise

def assign_category(bookmark):
    """
    Assign a category to a bookmark based on its content.
    """
    if bookmark.get('dead_link'):
        bookmark['category'] = 'Dead Link'
        logger.info(f"Assigned category 'Dead Link' to bookmark: {bookmark.get('url')}")
        return bookmark

    summary = bookmark.get('summary', '').lower()
    assigned_category = 'Uncategorized'

    # Keywords associated with each category
    category_keywords = {
        "Social Media": ["social media", "networking", "friends", "connect", "posts", "profile"],
        "News and Media": ["news", "journalism", "media", "headlines", "breaking news"],
        "Education and Learning": ["education", "learning", "courses", "tutorial", "university", "academy", "study"],
        "Entertainment": ["entertainment", "movies", "tv shows", "games", "comics", "fun"],
        "Shopping and E-commerce": ["shopping", "e-commerce", "buy", "sell", "marketplace", "deals", "store"],
        "Finance and Banking": ["finance", "banking", "investment", "money", "economy", "stock", "trading"],
        "Technology": ["technology", "tech", "gadgets", "software", "computers", "innovation"],
        "Health and Fitness": ["health", "fitness", "medical", "wellness", "exercise", "diet"],
        "Travel and Tourism": ["travel", "tourism", "destinations", "hotels", "flights", "vacation"],
        "Food and Recipes": ["food", "recipes", "cooking", "cuisine", "restaurant", "dining"],
        "Sports": ["sports", "scores", "teams", "athletics", "matches", "leagues"],
        "Arts and Culture": ["arts", "culture", "museum", "gallery", "exhibition", "artistic"],
        "Government and Politics": ["government", "politics", "policy", "election", "public service"],
        "Business and Economy": ["business", "corporate", "industry", "economy", "markets"],
        "Science and Research": ["science", "research", "experiment", "laboratory", "study", "scientific"],
        "Personal Blogs and Journals": ["blog", "journal", "personal", "diary", "thoughts", "opinions"],
        "Job Search and Careers": ["jobs", "careers", "recruitment", "resume", "employment", "hiring"],
        "Music and Audio": ["music", "audio", "songs", "albums", "artists", "bands"],
        "Videos and Movies": ["video", "movies", "film", "clips", "trailers", "cinema"],
        "Reference and Knowledge Bases": ["reference", "encyclopedia", "dictionary", "wiki", "knowledge", "information"],
    }

    for category, keywords in category_keywords.items():
        for keyword in keywords:
            if re.search(r'\b' + re.escape(keyword) + r'\b', summary):
                assigned_category = category
                logger.info(f"Assigned category '{assigned_category}' to bookmark: {bookmark.get('url')}")
                break
        if assigned_category != 'Uncategorized':
            break

    bookmark['category'] = assigned_category
    if assigned_category == 'Uncategorized':
        logger.info(f"No matching category found for bookmark: {bookmark.get('url')}")
    return bookmark

def vectorize_and_index(bookmarks_list):
    """
    Create vector embeddings for bookmarks and build FAISS index.
    """
    logger.info("Vectorizing summaries and building FAISS index")
    try:
        summaries = [bookmark['summary'] for bookmark in bookmarks_list]
        embeddings = embedding_model.encode(summaries)
        dimension = embeddings.shape[1]
        faiss_idx = faiss.IndexFlatL2(dimension)
        faiss_idx.add(np.array(embeddings))
        logger.info("FAISS index built successfully")
        return faiss_idx, embeddings
    except Exception as e:
        logger.error(f"Error in vectorizing and indexing: {e}")
        raise

def display_bookmarks():
    """
    Generate HTML display for bookmarks.
    """
    logger.info("Generating HTML display for bookmarks")
    cards = ''
    for i, bookmark in enumerate(bookmarks):
        index = i + 1
        status = "❌ Dead Link" if bookmark.get('dead_link') else "✅ Active"
        title = bookmark['title']
        url = bookmark['url']
        etag = bookmark.get('etag', 'N/A')
        summary = bookmark.get('summary', '')
        category = bookmark.get('category', 'Uncategorized')

        if bookmark.get('dead_link'):
            card_style = "border: 2px solid var(--error-color);"
            text_style = "color: var(--error-color);"
        else:
            card_style = "border: 2px solid var(--success-color);"
            text_style = "color: var(--text-color);"

        card_html = f'''
        <div class="card" style="{card_style}; padding: 10px; margin: 10px; border-radius: 5px;">
            <div class="card-content">
                <h3 style="{text_style}">{index}. {title} {status}</h3>
                <p style="{text_style}"><strong>Category:</strong> {category}</p>
                <p style="{text_style}"><strong>URL:</strong> <a href="{url}" target="_blank" style="{text_style}">{url}</a></p>
                <p style="{text_style}"><strong>ETag:</strong> {etag}</p>
                <p style="{text_style}"><strong>Summary:</strong> {summary}</p>
            </div>
        </div>
        '''
        cards += card_html
    logger.info("HTML display generated")
    return cards

def process_uploaded_file(file):
    """
    Process the uploaded bookmarks file.
    """
    global bookmarks, faiss_index
    logger.info("Processing uploaded file")
    
    if file is None:
        logger.warning("No file uploaded")
        return "Please upload a bookmarks HTML file.", ''

    try:
        file_content = file.decode('utf-8')
    except UnicodeDecodeError as e:
        logger.error(f"Error decoding the file: {e}")
        return "Error decoding the file. Please ensure it's a valid HTML file.", ''

    try:
        bookmarks = parse_bookmarks(file_content)
    except Exception as e:
        logger.error(f"Error parsing bookmarks: {e}")
        return "Error parsing the bookmarks HTML file.", ''

    if not bookmarks:
        logger.warning("No bookmarks found in the uploaded file")
        return "No bookmarks found in the uploaded file.", ''

    # Asynchronously fetch bookmark info
    try:
        asyncio.run(process_bookmarks_async(bookmarks))
    except Exception as e:
        logger.error(f"Error processing bookmarks asynchronously: {e}")
        return "Error processing bookmarks.", ''

    # Generate summaries and assign categories
    for bookmark in bookmarks:
        generate_summary(bookmark)
        assign_category(bookmark)

    try:
        faiss_index, embeddings = vectorize_and_index(bookmarks)
    except Exception as e:
        logger.error(f"Error building FAISS index: {e}")
        return "Error building search index.", ''

    message = f"✅ Successfully processed {len(bookmarks)} bookmarks."
    logger.info(message)
    bookmark_html = display_bookmarks()

    return message, bookmark_html

def update_bookmark_selector():
    """
    Update the bookmark selector choices for the Manage Bookmarks tab.
    """
    choices = [f"{i+1}. {bookmark['title']} (Category: {bookmark['category']})" 
              for i, bookmark in enumerate(bookmarks)]
    return gr.update(choices=choices, value=[])

def delete_selected_bookmarks(selected_indices):
    """
    Delete selected bookmarks.
    """
    global bookmarks, faiss_index
    if not selected_indices:
        return "⚠️ No bookmarks selected.", gr.update(choices=[]), ''

    indices = [int(s.split('.')[0])-1 for s in selected_indices]
    indices = sorted(indices, reverse=True)
    for idx in indices:
        if 0 <= idx < len(bookmarks):
            logger.info(f"Deleting bookmark at index {idx + 1}")
            bookmarks.pop(idx)

    if bookmarks:
        faiss_index, embeddings = vectorize_and_index(bookmarks)
    else:
        faiss_index = None

    message = "🗑️ Selected bookmarks deleted successfully."
    logger.info(message)
    
    bookmark_selector_update = update_bookmark_selector()
    bookmarks_html = display_bookmarks()
    
    return message, bookmark_selector_update, bookmarks_html

def edit_selected_bookmarks_category(selected_indices, new_category):
    """
    Edit category of selected bookmarks.
    """
    if not selected_indices:
        return "⚠️ No bookmarks selected.", gr.update(choices=[]), ''
    if not new_category:
        return "⚠️ No new category selected.", gr.update(choices=[]), ''

    indices = [int(s.split('.')[0])-1 for s in selected_indices]
    for idx in indices:
        if 0 <= idx < len(bookmarks):
            bookmarks[idx]['category'] = new_category
            logger.info(f"Updated category for bookmark {idx + 1} to {new_category}")

    message = "✏️ Category updated for selected bookmarks."
    logger.info(message)
    
    bookmark_selector_update = update_bookmark_selector()
    bookmarks_html = display_bookmarks()
    
    return message, bookmark_selector_update, bookmarks_html

def export_bookmarks():
    """
    Export bookmarks to HTML file.
    """
    if not bookmarks:
        logger.warning("No bookmarks to export")
        return "⚠️ No bookmarks to export."

    try:
        logger.info("Exporting bookmarks to HTML")
        soup = BeautifulSoup("<!DOCTYPE NETSCAPE-Bookmark-file-1><Title>Bookmarks</Title><H1>Bookmarks</H1>", 'html.parser')
        dl = soup.new_tag('DL')
        for bookmark in bookmarks:
            dt = soup.new_tag('DT')
            a = soup.new_tag('A', href=bookmark['url'])
            a.string = bookmark['title']
            dt.append(a)
            dl.append(dt)
        soup.append(dl)
        html_content = str(soup)
        b64 = base64.b64encode(html_content.encode()).decode()
        href = f'data:text/html;base64,{b64}'
        logger.info("Bookmarks exported successfully")
        return f'<a href="{href}" download="bookmarks.html">💾 Download Exported Bookmarks</a>'
    except Exception as e:
        logger.error(f"Error exporting bookmarks: {e}")
        return "⚠️ Error exporting bookmarks."

def chatbot_response(user_query):
    """
    Generate chatbot response using Groq Cloud API.
    """
    if not GROQ_API_KEY:
        logger.warning("GROQ_API_KEY not set.")
        return "⚠️ API key not set. Please set the GROQ_API_KEY environment variable."

    if not bookmarks:
        logger.warning("No bookmarks available for chatbot")
        return "⚠️ No bookmarks available. Please upload and process your bookmarks first."

    logger.info(f"Chatbot received query: {user_query}")

    try:
        max_bookmarks = 50
        bookmark_data = ""
        for idx, bookmark in enumerate(bookmarks[:max_bookmarks]):
            bookmark_data += f"{idx+1}. Title: {bookmark['title']}\nURL: {bookmark['url']}\nSummary: {bookmark['summary']}\n\n"

        prompt = f"""
        You are an assistant that helps users find relevant bookmarks from their collection based on their queries.

        User Query:
        {user_query}

        Bookmarks:
        {bookmark_data}

        Please identify the most relevant bookmarks that match the user's query. Provide a concise list including the index, title, URL, and a brief summary.
        """

        response = openai.ChatCompletion.create(
            model='llama3-8b-8192',
            messages=[
                {"role": "system", "content": "You help users find relevant bookmarks based on their queries."},
                {"role": "user", "content": prompt}
            ],
            max_tokens=500,
            temperature=0.7,
        )

        answer = response['choices'][0]['message']['content'].strip()
        logger.info("Chatbot response generated using Groq Cloud API")
        return answer

    except Exception as e:
        error_message = f"⚠️ Error processing your query: {str(e)}"
        logger.error(error_message)
        return error_message

def build_app():
    """
    Build and launch the Gradio app.
    """
    try:
        logger.info("Building Gradio app")
        with gr.Blocks(css="app.css") as demo:
            # General Overview
            gr.Markdown("""
            # 📚 SmartMarks - AI Browser Bookmarks Manager

            Welcome to **SmartMarks**, your intelligent assistant for managing browser bookmarks. SmartMarks leverages AI to help you organize, search, and interact with your bookmarks seamlessly.

            ---

            ## 🚀 **How to Use SmartMarks**

            SmartMarks is divided into three main sections:

            1. **📂 Upload and Process Bookmarks:** Import your existing bookmarks and let SmartMarks analyze and categorize them for you.
            2. **💬 Chat with Bookmarks:** Interact with your bookmarks using natural language queries to find relevant links effortlessly.
            3. **🛠️ Manage Bookmarks:** View, edit, delete, and export your bookmarks with ease.
            """)

            # Upload and Process Bookmarks Tab
            with gr.Tab("Upload and Process Bookmarks"):
                gr.Markdown("""
                ## 📂 **Upload and Process Bookmarks**

                ### 📝 **Steps:**
                1. Click on the "Upload Bookmarks HTML File" button
                2. Select your bookmarks file
                3. Click "Process Bookmarks" to analyze and organize your bookmarks
                """)

                upload = gr.File(label="📁 Upload Bookmarks HTML File", type='binary')
                process_button = gr.Button("⚙️ Process Bookmarks")
                output_text = gr.Textbox(label="✅ Output", interactive=False)
                bookmark_display = gr.HTML(label="📄 Processed Bookmarks")

                process_button.click(
                    process_uploaded_file,
                    inputs=upload,
                    outputs=[output_text, bookmark_display]
                )

            # Chat with Bookmarks Tab
            with gr.Tab("Chat with Bookmarks"):
                gr.Markdown("""
                ## 💬 **Chat with Bookmarks**

                Ask questions about your bookmarks and get relevant results.
                """)

                user_input = gr.Textbox(
                    label="✍️ Ask about your bookmarks",
                    placeholder="e.g., Do I have any bookmarks about AI?"
                )
                chat_button = gr.Button("📨 Send")
                chat_output = gr.Textbox(label="💬 Response", interactive=False)

                chat_button.click(
                    chatbot_response,
                    inputs=user_input,
                    outputs=chat_output
                )

            # Manage Bookmarks Tab
            with gr.Tab("Manage Bookmarks"):
                gr.Markdown("""
                ## 🛠️ **Manage Bookmarks**

                Select bookmarks to delete or edit their categories.
                """)

                manage_output = gr.Textbox(label="🔄 Status", interactive=False)
                bookmark_selector = gr.CheckboxGroup(
                    label="✅ Select Bookmarks",
                    choices=[]
                )
                new_category = gr.Dropdown(
                    label="🆕 New Category",
                    choices=CATEGORIES,
                    value="Uncategorized"
                )

                with gr.Row():
                    delete_button = gr.Button("🗑️ Delete Selected")
                    edit_category_button = gr.Button("✏️ Edit Category")
                    export_button = gr.Button("💾 Export")

                bookmark_display_manage = gr.HTML(label="📄 Bookmarks")
                download_link = gr.HTML(label="📥 Download")

                delete_button.click(
                    delete_selected_bookmarks,
                    inputs=bookmark_selector,
                    outputs=[manage_output, bookmark_selector, bookmark_display_manage]
                )

                edit_category_button.click(
                    edit_selected_bookmarks_category,
                    inputs=[bookmark_selector, new_category],
                    outputs=[manage_output, bookmark_selector, bookmark_display_manage]
                )

                export_button.click(
                    export_bookmarks,
                    outputs=download_link
                )

        logger.info("Launching Gradio app")
        demo.launch(debug=True)
    except Exception as e:
        logger.error(f"Error building the app: {e}")
        print(f"Error building the app: {e}")

if __name__ == "__main__":
    build_app()