import os
import gradio as gr
import pandas as pd
import plotly.express as px
import plotly.graph_objects as go
import boto3
import PyPDF2
import io
import uuid
import json
import re
import time
import numpy as np
import pdfplumber
import requests
from dotenv import load_dotenv
from cassandra.cluster import Cluster
from cassandra.auth import PlainTextAuthProvider
from cassandra.query import SimpleStatement
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain_community.vectorstores import Cassandra
from langchain_openai import OpenAIEmbeddings
from PIL import Image, ImageDraw, ImageFont
from astrapy.db import AstraDB as DataAPIClient

# Load environment variables
load_dotenv()

# Global variables to store chat history and analytics data
messages = []
product_images = []
current_product = ""
query_counts = {"circuit breaker": 0, "motor starter": 0, "contactor": 0, "switch": 0, "relay": 0, "other": 0}
daily_queries = [0, 0, 0, 0, 0, 6, 8, 10, 7, 9, 12, 15, 11, 14]  # Mock data for chart

# Initialize OpenAI API
def init_openai_api():
    """Initialize OpenAI API with API key from Hugging Face Secrets"""
    try:
        # Get API key from environment (set by Hugging Face Secrets)
        openai_api_key = os.getenv("OPENAI_API_KEY")
        if not openai_api_key:
            print("OPENAI_API_KEY is not set in environment variables")
            return False
        
        # Set as environment variable for libraries that use it directly
        os.environ["OPENAI_API_KEY"] = openai_api_key
        print("OpenAI API initialized with API key from Hugging Face Secrets")
        return True
        
    except Exception as e:
        print(f"Error initializing OpenAI API: {e}")
        return False

# Initialize Mistral API
def init_mistral_api():
    """Initialize Mistral API with API key from Hugging Face Secrets"""
    try:
        # Get API key from environment (set by Hugging Face Secrets)
        mistral_api_key = os.getenv("MISTRAL_API_KEY")
        if not mistral_api_key:
            print("MISTRAL_API_KEY is not set in environment variables")
            return False
        
        # Set as environment variable for libraries that use it directly
        os.environ["MISTRAL_API_KEY"] = mistral_api_key
        print("Mistral API initialized with API key from Hugging Face Secrets")
        return True
        
    except Exception as e:
        print(f"Error initializing Mistral API: {e}")
        return False

# Initialize Astra DB connection
def init_astra_db():
    """Initialize connection to Astra DB"""
    # Initialize collection variables at the very beginning
    db = None
    product_embeddings = None
    query_analytics = None
    product_images = None
    astra_db_keyspace = None
    
    try:
        # Get credentials from environment variables
        astra_db_id = os.getenv("ASTRA_DB_ID")
        astra_db_region = os.getenv("ASTRA_DB_REGION")
        astra_db_keyspace = os.getenv("ASTRA_DB_KEYSPACE")
        astra_db_application_token = os.getenv("ASTRA_DB_APPLICATION_TOKEN")
        astra_db_endpoint = os.getenv("ASTRA_DB_ENDPOINT", "https://8e3fd85c-5f28-4e1f-8538-9dd28a3ea2b0-us-east-2.apps.astra.datastax.com")
        
        # Initialize the client
        db = DataAPIClient(api_endpoint=astra_db_endpoint, token=astra_db_application_token)
        
        # Try to create or access collections
        try:
            product_embeddings = db.collection("product_embeddings")
            query_analytics = db.collection("query_analytics")
            product_images = db.collection("product_images")
            print("Successfully created/accessed collections")
        except Exception as collection_error:
            print(f"Error creating collections: {collection_error}")
        
        print(f"Connected to Astra DB")
        
    except Exception as e:
        print(f"Error connecting to Astra DB: {e}")
        db = None
    
    # Always return a dictionary, even if there are errors
    return {
        "db": db,
        "keyspace": astra_db_keyspace,
        "collections": {
            "product_embeddings": product_embeddings,
            "query_analytics": query_analytics,
            "product_images": product_images
        }
    }
        
# Initialize AWS S3 client for accessing product catalogs
def init_s3_client():
    """Initialize S3 client for accessing product catalogs"""
    try:
        s3_client = boto3.client(
            's3',
            aws_access_key_id=os.getenv("AWS_ACCESS_KEY_ID"),
            aws_secret_access_key=os.getenv("AWS_SECRET_ACCESS_KEY"),
            region_name=os.getenv("AWS_REGION")
        )
        return s3_client
    except Exception as e:
        print(f"Error initializing S3 client: {e}")
        return None

# Initialize embedding model
def get_embeddings_model():
    """Initialize the OpenAI embeddings model for vector generation"""
    try:
        embeddings = OpenAIEmbeddings(
            model="text-embedding-ada-002",
            openai_api_key=os.getenv("OPENAI_API_KEY")
        )
        return embeddings
    except Exception as e:
        print(f"Error initializing embeddings model: {e}")
        return None

# Extract images from PDFs and store in Astra DB
def extract_images_from_pdf(pdf_content, product_type):
    """Extract images from PDF using pdfplumber and store them in Astra DB"""
    if not astra_session:
        return 0
    
    try:
        # Create a BytesIO object from the PDF content
        pdf_file = io.BytesIO(pdf_content)
        
        # Open the PDF with pdfplumber
        with pdfplumber.open(pdf_file) as pdf:
            images_stored = 0
            
            # Iterate through each page
            for page_num, page in enumerate(pdf.pages):
                # Extract images from the page
                for img_index, img in enumerate(page.images):
                    # Get image data
                    image_bytes = img["stream"].get_data()
                    
                    # Skip small images
                    if len(image_bytes) < 5000:
                        continue
                    
                    # Generate a unique ID for the image
                    image_id = str(uuid.uuid4())
                    
                    # Store metadata
                    metadata = json.dumps({
                        "product_type": product_type,
                        "page_number": page_num,
                        "image_index": img_index,
                        "timestamp": time.time(),
                        "image_size": len(image_bytes),
                        "mime_type": "jpg"  # Default to jpg for simplicity
                    })
                    
                    # Insert into Astra DB
                    astra_session.execute(
                        f"""
                        INSERT INTO {astra_keyspace}.product_images 
                        (id, product_type, image_data, page_number, image_index, metadata)
                        VALUES (%s, %s, %s, %s, %s, %s)
                        """,
                        (image_id, product_type, bytearray(image_bytes), page_num, img_index, metadata)
                    )
                    images_stored += 1
            
        return images_stored
    except Exception as e:
        print(f"Error extracting images from PDF: {e}")
        return 0

# Function to download and process PDFs from S3
def process_pdf_catalogs():
    """Download and process PDF catalogs from S3 bucket"""
    if not s3_client:
        print("S3 client not initialized, skipping PDF processing")
        return {"status": "error", "message": "S3 client not initialized"}
    
    try:
        # Get list of PDF files in the bucket
        bucket_name = os.getenv("S3_BUCKET_NAME")
        response = s3_client.list_objects_v2(Bucket=bucket_name, Prefix="catalogs/")
        
        pdf_files = [obj['Key'] for obj in response.get('Contents', []) if obj['Key'].endswith('.pdf')]
        
        processed_chunks = 0
        processed_images = 0
        
        # Process each PDF file
        for pdf_file in pdf_files:
            # Determine product type from filename
            product_type = "other"
            for pt in ["circuit_breaker", "motor_starter", "contactor", "switch", "relay"]:
                if pt in pdf_file.lower():
                    product_type = pt.replace("_", " ")
                    break
            
            # Download PDF from S3
            response = s3_client.get_object(Bucket=bucket_name, Key=pdf_file)
            pdf_content = response['Body'].read()
            
            # Process PDF text content
            pdf_reader = PyPDF2.PdfReader(io.BytesIO(pdf_content))
            text_content = ""
            
            # Extract text from each page
            for page in pdf_reader.pages:
                text_content += page.extract_text() + "\n\n"
            
            # Split text into smaller chunks for efficient embedding
            text_splitter = RecursiveCharacterTextSplitter(
                chunk_size=1000,
                chunk_overlap=200,
                length_function=len,
            )
            chunks = text_splitter.split_text(text_content)
            
            # Store chunks in vector database
            store_chunks_in_db(chunks, product_type)
            
            # Extract and store images
            images_count = extract_images_from_pdf(pdf_content, product_type)
            processed_images += images_count
            
            processed_chunks += len(chunks)
            print(f"Processed {pdf_file}: {len(chunks)} text chunks and {images_count} images extracted")
        
        print(f"PDF processing complete: {len(pdf_files)} files, {processed_chunks} chunks, {processed_images} images")
        return {
            "status": "success", 
            "files_processed": len(pdf_files),
            "chunks_processed": processed_chunks,
            "images_processed": processed_images
        }
    except Exception as e:
        print(f"Error processing PDF catalogs: {e}")
        return {"status": "error", "message": str(e)}

# Add this function to process PDFs from URLs
def process_pdf_from_url(url):
    """Download and process a PDF from a URL"""
    try:
        # Download the PDF
        response = requests.get(url, stream=True)
        if response.status_code != 200:
            return f"Error downloading PDF: HTTP status code {response.status_code}"
        
        # Get the content
        pdf_content = response.content
        
        # Determine product type from URL or filename
        product_type = "other"
        for pt in ["circuit_breaker", "motor_starter", "contactor", "switch", "relay"]:
            if pt in url.lower():
                product_type = pt.replace("_", " ")
                break
        
        # Process PDF text content
        pdf_reader = PyPDF2.PdfReader(io.BytesIO(pdf_content))
        text_content = ""
        
        # Extract text from each page
        for page in pdf_reader.pages:
            text_content += page.extract_text() + "\n\n"
        
        # Split text into smaller chunks for efficient embedding
        text_splitter = RecursiveCharacterTextSplitter(
            chunk_size=1000,
            chunk_overlap=200,
            length_function=len,
        )
        chunks = text_splitter.split_text(text_content)
        
        # Store chunks in vector database (if available)
        if astra_session:
            store_chunks_in_db(chunks, product_type)
        
        # Extract and store images (if database available)
        images_count = 0
        if astra_session:
            images_count = extract_images_from_pdf(pdf_content, product_type)
        
        print(f"Processed PDF from URL: {url}: {len(chunks)} text chunks and {images_count} images extracted")
        return f"Successfully processed PDF from URL: {len(chunks)} chunks, {images_count} images"
    
    except Exception as e:
        print(f"Error processing PDF from URL: {e}")
        return f"Error processing PDF: {str(e)}"        

# Function to store text chunks in Astra DB with embeddings
def store_chunks_in_db(chunks, product_type):
    """Store text chunks with embeddings in Astra DB"""
    if not astra_session or not embeddings_model:
        # Skip if database or embeddings model isn't available
        return
    
    try:
        # Process and store each chunk
        for chunk in chunks:
            # Generate embedding for the chunk
            embedding_vector = embeddings_model.embed_query(chunk)
            
            # Create a unique ID for the chunk
            chunk_id = str(uuid.uuid4())
            
            # Create metadata
            metadata = json.dumps({
                "product_type": product_type,
                "timestamp": time.time(),
                "char_count": len(chunk)
            })
            
            # Insert into Astra DB
            astra_session.execute(
                f"""
                INSERT INTO {astra_keyspace}.product_embeddings 
                (id, product_type, content, embedding_vector, metadata)
                VALUES (%s, %s, %s, %s, %s)
                """,
                (chunk_id, product_type, chunk, embedding_vector, metadata)
            )
    except Exception as e:
        print(f"Error storing chunks in database: {e}")

# Function to search for relevant product information in the vector database
def search_vector_db(query, product_type=None, limit=5):
    """Search for relevant information in the vector database"""
    if not astra_session or not embeddings_model:
        # Return empty results if DB isn't available
        return []
    
    try:
        # Generate embedding for the query
        query_embedding = embeddings_model.embed_query(query)
        
        # Prepare the CQL query
        cql_query = f"""
            SELECT id, product_type, content, embedding_vector
            FROM {astra_keyspace}.product_embeddings
        """
        
        # Add product type filter if specified
        if product_type:
            cql_query += f" WHERE product_type = '{product_type}'"
        
        # Execute query to get all embeddings
        rows = astra_session.execute(cql_query)
        
        # Calculate similarity and rank results
        results = []
        for row in rows:
            # Calculate cosine similarity
            db_embedding = row.embedding_vector
            similarity = np.dot(query_embedding, db_embedding) / (
                np.linalg.norm(query_embedding) * np.linalg.norm(db_embedding)
            )
            
            results.append({
                "id": row.id,
                "product_type": row.product_type,
                "content": row.content,
                "similarity": similarity
            })
        
        # Sort by similarity (highest first) and limit results
        results.sort(key=lambda x: x["similarity"], reverse=True)
        return results[:limit]
    except Exception as e:
        print(f"Error searching vector database: {e}")
        return []

def log_query_analytics(query, product_type, response_time):
    """Log query analytics to Astra DB"""
    if not astra_session:
        return
    
    try:
        query_id = str(uuid.uuid4())
        astra_session.execute(
            f"""
            INSERT INTO {astra_keyspace}.query_analytics 
            (id, query, product_type, timestamp, response_time)
            VALUES (%s, %s, %s, %s, %s)
            """,
            (query_id, query, product_type, time.time(), response_time)
        )
    except Exception as e:
        print(f"Error logging query analytics: {e}")

# Get product images from Astra DB
def get_product_images(product):
    """Get product images from Astra DB, save them temporarily, and serve them"""
    global product_images
    
    if not astra_session:
        return []
    
    try:
        # Query Astra DB for images related to the product
        query = f"""
            SELECT id, product_type, image_data, metadata
            FROM {astra_keyspace}.product_images
            WHERE product_type = %s
            LIMIT 4
        """
        
        rows = astra_session.execute(query, (product,))
        
        # Store image URLs for display
        image_urls = []
        for row in rows:
            image_id = row.id
            image_data = row.image_data
            
            # Save image data to a temporary file
            temp_dir = os.path.join(os.getcwd(), 'temp_images')
            os.makedirs(temp_dir, exist_ok=True)
            
            temp_path = os.path.join(temp_dir, f"image-{image_id}.jpg")
            with open(temp_path, 'wb') as f:
                f.write(image_data)
            
            # Create a URL that can be served by your web server
            image_url = f"/temp_images/image-{image_id}.jpg"
            image_urls.append(image_url)
        
        # If no images found, use placeholder URLs
        if not image_urls:
            image_urls = [
                f"https://placeholder.com/abb-{product.lower().replace(' ', '-')}-1",
                f"https://placeholder.com/abb-{product.lower().replace(' ', '-')}-2"
            ]
        
        return image_urls
    except Exception as e:
        print(f"Error retrieving product images: {e}")
        return []

# Get response from OpenAI API
def get_openai_response(query, context_chunks=None):
    """Get enhanced response from OpenAI model using RAG"""
    start_time = time.time()
    
    try:
        # Detect product type from query
        product_keywords = {"circuit breaker": 0, "motor starter": 0, "contactor": 0, "switch": 0, "relay": 0}
        detected_product = "other"
        
        for keyword in product_keywords:
            if keyword in query.lower():
                product_keywords[keyword] += 1
                if product_keywords[keyword] > product_keywords.get(detected_product, -1):
                    detected_product = keyword
        
        # If no context chunks provided, search the vector DB
        if not context_chunks:
            context_chunks = search_vector_db(query, product_type=detected_product if detected_product != "other" else None)
            
        # Build context from retrieved chunks
        context_text = "\n\n".join([chunk["content"] for chunk in context_chunks]) if context_chunks else ""
        
        # Create prompt with context
        prompt = f"""
        You are an assistant specialized in ABB products and solutions. Answer the following query about ABB products with accurate and helpful information.
        
        Use the following product information to inform your response:
        {context_text}
        
        If the information above doesn't contain relevant details, use your general knowledge about industrial electrical equipment, but be clear about what information comes from the ABB catalog versus general knowledge.
        
        User query: {query}
        """
        
        # Call OpenAI API
        headers = {
            "Content-Type": "application/json",
            "Authorization": f"Bearer {os.getenv('OPENAI_API_KEY')}"
        }
        
        payload = {
            "model": "gpt-4o",
            "messages": [
                {"role": "system", "content": "You are an assistant specialized in ABB products and solutions."},
                {"role": "user", "content": prompt}
            ],
            "temperature": 0.7,
            "max_tokens": 800
        }
        
        response = requests.post(
            "https://api.openai.com/v1/chat/completions",
            headers=headers,
            json=payload
        )
        
        if response.status_code == 200:
            response_json = response.json()
            response_text = response_json["choices"][0]["message"]["content"]
        else:
            # Fallback to Mistral if OpenAI fails
            print(f"OpenAI API error: {response.status_code}, {response.text}")
            response_text = get_mistral_response(query, context_chunks)
        
        # Update query counts for analytics
        if detected_product in query_counts:
            query_counts[detected_product] += 1
        else:
            query_counts["other"] += 1
            
        # Log analytics
        response_time = time.time() - start_time
        log_query_analytics(query, detected_product, response_time)
        
        return response_text, detected_product
    except Exception as e:
        print(f"Error processing chat request with OpenAI: {e}")
        # Fallback to Mistral
        try:
            return get_mistral_response(query, context_chunks)
        except:
            return "Sorry, I encountered an error processing your request. Please try again.", "other"

# Get response from Mistral API (fallback)
def get_mistral_response(query, context_chunks=None):
    """Get enhanced response from Mistral model using RAG (fallback)"""
    start_time = time.time()
    
    try:
        # Detect product type from query
        product_keywords = {"circuit breaker": 0, "motor starter": 0, "contactor": 0, "switch": 0, "relay": 0}
        detected_product = "other"
        
        for keyword in product_keywords:
            if keyword in query.lower():
                product_keywords[keyword] += 1
                if product_keywords[keyword] > product_keywords.get(detected_product, -1):
                    detected_product = keyword
        
        # If no context chunks provided, search the vector DB
        if not context_chunks:
            context_chunks = search_vector_db(query, product_type=detected_product if detected_product != "other" else None)
            
        # Build context from retrieved chunks
        context_text = "\n\n".join([chunk["content"] for chunk in context_chunks]) if context_chunks else ""
        
        # Create prompt with context
        prompt = f"""
        You are an assistant specialized in ABB products and solutions. Answer the following query about ABB products with accurate and helpful information.
        
        Use the following product information to inform your response:
        {context_text}
        
        If the information above doesn't contain relevant details, use your general knowledge about industrial electrical equipment, but be clear about what information comes from the ABB catalog versus general knowledge.
        
        User query: {query}
        """
        
        # Call Mistral API
        headers = {
            "Content-Type": "application/json",
            "Authorization": f"Bearer {os.getenv('MISTRAL_API_KEY')}"
        }
        
        payload = {
            "model": "mistral-large-latest",
            "messages": [
                {"role": "system", "content": "You are an assistant specialized in ABB products and solutions."},
                {"role": "user", "content": prompt}
            ],
            "temperature": 0.7,
            "max_tokens": 800
        }
        
        response = requests.post(
            "https://api.mistral.ai/v1/chat/completions",
            headers=headers,
            json=payload
        )
        
        if response.status_code == 200:
            response_json = response.json()
            response_text = response_json["choices"][0]["message"]["content"]
        else:
            print(f"Mistral API error: {response.status_code}, {response.text}")
            response_text = "Sorry, I encountered an error processing your request. Please try again."
        
        # Update query counts for analytics
        if detected_product in query_counts:
            query_counts[detected_product] += 1
        else:
            query_counts["other"] += 1
            
        # Log analytics
        response_time = time.time() - start_time
        log_query_analytics(query, detected_product, response_time)
        
        return response_text, detected_product
    except Exception as e:
        print(f"Error processing chat request with Mistral: {e}")
        return "Sorry, I encountered an error processing your request. Please try again.", "other"

def process_message(query, history):
    """Process query using RAG and generate response with product images"""
    global messages, product_images, current_product
    
    if not query.strip():
        return history
    
    # Get context from vector database
    context_chunks = search_vector_db(query)
    
    # Get LLM response with RAG (try OpenAI first, fallback to Mistral)
    try:
        response_text, detected_product = get_openai_response(query, context_chunks)
    except Exception as e:
        print(f"Error with OpenAI, falling back to Mistral: {e}")
        response_text, detected_product = get_mistral_response(query, context_chunks)
    
    # Format new history entry
    new_history = history.copy()
    new_history.append((query, response_text))
    
    # Get product images if product detected
    if detected_product != "other":
        current_product = detected_product
        product_images = get_product_images(detected_product)
    else:
        product_images = []
    
    # Update daily query data for analytics (in a real app, this would be in a database)
    daily_queries[-1] += 1
    
    return new_history

def reset_chat(history):
    """Reset the chat history"""
    return []

def process_pdfs_from_s3(bucket_name, prefix):
    """Process PDFs from S3 bucket"""
    # Set environment variable for S3 bucket
    os.environ["S3_BUCKET_NAME"] = bucket_name
    
    # Process PDFs
    result = process_pdf_catalogs()
    
    # Return result as string
    if result["status"] == "success":
        return f"Successfully processed {result['files_processed']} files, {result['chunks_processed']} chunks, and {result['images_processed']} images."
    else:
        return f"Error: {result['message']}"

def render_images():
    """Render product images as HTML (if available)"""
    if not product_images:
        return ""
    
    html = "<div style='margin-top: 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px;'>"
    for i, url in enumerate(product_images):
        html += f"""
        <div style='background: #f3f4f6; border-radius: 6px; padding: 8px; text-align: center;'>
            <div style='height: 100px; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,0.05); border-radius: 4px;'>
                <svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect width="18" height="18" x="3" y="3" rx="2" ry="2"/><circle cx="9" cy="9" r="2"/><path d="m21 15-3.086-3.086a2 2 0 0 0-2.828 0L6 21"/></svg>
            </div>
            <p style='margin-top: 4px; font-size: 12px;'>{url}</p>
        </div>
        """
    html += "</div>"
    return html

def setup_and_update():
    """Setup the system and update status"""
    # Initialize APIs
    openai_initialized = init_openai_api()
    mistral_initialized = init_mistral_api()
    
    # Initialize database and other services
    global astra_session, astra_keyspace, s3_client, embeddings_model
    astra_result = init_astra_db()
    
    if astra_result:
        astra_session = astra_result.get("db")
        astra_keyspace = astra_result.get("keyspace")
    else:
        astra_session = None
        astra_keyspace = None
        
    s3_client = init_s3_client()
    embeddings_model = get_embeddings_model()
    
    # Return status
    status_msg = "System is ready. "
    if not openai_initialized:
        status_msg += "OpenAI API not initialized. "
    if not mistral_initialized:
        status_msg += "Mistral API not initialized. "
    if not astra_session:
        status_msg += "Astra DB not connected. "
    if not s3_client:
        status_msg += "S3 client not initialized. "
    
    return status_msg

def create_gradio_app():
    # Define CSS styles for a more modern, appealing interface
    custom_css = """
    :root {
        --primary-color: #FF000C;
        --secondary-color: #212832;
        --background-color: var(--body-background-fill);
        --card-color: var(--block-background-fill);
        --text-color: var(--body-text-color);
        --border-radius: 12px;
        --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    .app-header {
        background-color: var(--secondary-color);
        padding: 20px;
        border-radius: var(--border-radius);
        margin-bottom: 20px;
        box-shadow: var(--shadow);
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .app-header img {
        max-width: 120px;
    }

    .app-title {
        color: white;
        margin: 0;
        font-size: 24px;
        font-weight: 600;
    }

    .status-card, .catalog-card, .chat-card {
        background-color: var(--card-color);
        border-radius: var(--border-radius);
        padding: 15px;
        margin-bottom: 20px;
        box-shadow: var(--shadow);
    }

    .chat-card {
        height: 100%;
    }

    .message {
        padding: 10px 15px;
        border-radius: 8px;
        margin-bottom: 10px;
        max-width: 85%;
    }

    .user-message {
        background-color: var(--primary-color);
        color: white;
        margin-left: auto;
    }

    .bot-message {
        background-color: #f0f0f0;
        color: var(--text-color);
        margin-right: auto;
    }

    .footer {
        text-align: center;
        margin-top: 20px;
        font-size: 12px;
        color: var(--text-color);
    }

    .action-button {
        background-color: var(--primary-color);
        color: white;
        border: none;
        border-radius: var(--border-radius);
        padding: 8px 16px;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .action-button:hover {
        opacity: 0.9;
    }
    """

    # Create the Gradio interface
    with gr.Blocks(css=custom_css) as app:
        # Setup status variable
        setup_status = gr.State("System is setting up. Please wait...")
        status_display = gr.Markdown("System is setting up. Please wait...")

        with gr.Column(scale=1):
            # Modern header
            with gr.Row(elem_classes="app-header"):
                with gr.Column(scale=1):
                    gr.Image(value="https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/ABB_logo.svg/2560px-ABB_logo.svg.png",
                             width=120,
                             height=120,
                             interactive=False,
                             label="ABB Logo")
                with gr.Column(scale=3):
                    gr.HTML('<h1 class="app-title">Ginnie</h1>')
                    gr.HTML('<p class="app-subtitle">Your AI assistant for ABB product information</p>')

            # Chat interface
            with gr.Row():
                with gr.Column(scale=3):
                    # Chat interface with custom styling
                    gr.HTML('<div class="content-card">')
                    chatbot = gr.Chatbot(
                        value=[],
                        elem_id="chatbot",
                        height=500,
                        show_copy_button=True,
                        avatar_images=["https://ui-avatars.com/api/?name=You&background=0D8ABC&color=fff",
                                      "https://ui-avatars.com/api/?name=Ginnie&background=FF000C&color=fff"]
                    )

                    # Message input with better styling
                    with gr.Row(elem_classes="input-area"):
                        msg = gr.Textbox(
                            placeholder="Ask about ABB products...",
                            label="",
                            lines=2,
                            max_lines=5,
                            show_label=False
                        )

                        send_btn = gr.Button("Send", elem_classes="primary-button")

                    with gr.Row():
                        clear_btn = gr.Button("Clear Chat", elem_classes="secondary-button")
                    gr.HTML('</div>')

                with gr.Column(scale=1):
                    # Quick tips card
                    gr.HTML('<div class="status-card">')
                    gr.HTML('''
                    <h3>Quick Tips</h3>
                    <ul>
                        <li>Ask about specific ABB products</li>
                        <li>Inquire about technical specifications</li>
                        <li>Ask about installation and maintenance</li>
                        <li>Get help with troubleshooting</li>
                        <li>S3 Bucket Name=agent-product-discovery</li>
                        <li>ABB Ability™ System 800xA® 6.2.pdf, Enclosed Softstarters.pdf, Ex-Solutions.pdf, Low_power_UPS_catalogue_EN.pdf</li>
                    </ul>
                    ''')
                    gr.HTML('</div>')

                    # Admin settings
                    with gr.Accordion("Admin Settings", open=False):
                        with gr.Tab("Process PDFs"):
                            s3_bucket = gr.Textbox(label="S3 Bucket Name")
                            s3_prefix = gr.Textbox(label="S3 Prefix (folder)", value="catalogs/")
                            process_btn = gr.Button("Process PDFs from S3", elem_classes="action-button")

                            # Add direct PDF URL input
                            with gr.Tab("Direct PDF URLs"):
                                pdf_url = gr.Textbox(label="PDF URL", placeholder="https://example.com/sample.pdf")
                                pdf_dropdown = gr.Dropdown(
                                    label="ABB Catalog PDFs",
                                    choices=[
                                        "https://agent-product-discovery.s3.ap-south-1.amazonaws.com/ABB-catalog/ABB+Ability%E2%84%A2+System+800xA%C2%AE+6.2.pdf",
                                        "https://agent-product-discovery.s3.ap-south-1.amazonaws.com/ABB-catalog/Enclosed+Softstarters.pdf",
                                        "https://agent-product-discovery.s3.ap-south-1.amazonaws.com/ABB-catalog/Ex-Solutions.pdf",
                                        "https://agent-product-discovery.s3.ap-south-1.amazonaws.com/ABB-catalog/Low_power_UPS_catalogue_EN.pdf"
                                    ],
                                    interactive=True
                                )
                                process_url_btn = gr.Button("Process PDF from URL", elem_classes="action-button")

                            result_text = gr.Textbox(label="Processing Result")
    

            # Set up event handlers
            send_btn.click(
                process_message,
                [msg, chatbot],
                [chatbot],
                api_name="send_message"
            )

            msg.submit(
                process_message,
                [msg, chatbot],
                [chatbot],
                api_name="send_message_enter"
            )

            clear_btn.click(
                reset_chat,
                [chatbot],
                [chatbot],
                api_name="clear_chat"
            )

            process_btn.click(
                process_pdfs_from_s3,
                [s3_bucket, s3_prefix],
                [result_text],
                api_name="process_pdfs"
            )

            # Add this event handler
            process_url_btn.click(
            process_pdf_from_url,
            [pdf_url],
            [result_text],
            api_name="process_pdf_url"
            )

            # Add this dropdown change event
            pdf_dropdown.change(
            lambda x: x,
            [pdf_dropdown],
            [pdf_url],
            api_name="update_pdf_url"
            )

        # Add the system setup to run when the app loads
        app.load(setup_and_update, None, status_display)

    return app

# Start the application
if __name__ == "__main__":
    # Create and launch the UI
    demo = create_gradio_app()
    demo.launch(share=True)