# app.py - Flask Backend
from flask import Flask, request, jsonify, send_from_directory
import google.generativeai as genai
from dotenv import load_dotenv
import os
from flask_cors import CORS
import markdown2
import re

# Load environment variables
load_dotenv()

# Initialize Flask app
app = Flask(__name__, static_folder='static')
CORS(app)  # Enable CORS for all routes

# Configure Gemini
genai.configure(api_key=os.getenv("GEMINI_API_KEY"))
model = genai.GenerativeModel('gemini-2.5-flash')

def convert_markdown_to_html(text):
    # Convert markdown to HTML
    html = markdown2.markdown(text)
    
    # Add custom styling to code blocks
    html = html.replace('<code>', '<code class="code-block">')
    
    # Convert **bold** to <strong> for better visibility
    html = re.sub(r'\*\*(.*?)\*\*', r'<strong>\1</strong>', html)
    
    # Convert *italic* to <em>
    html = re.sub(r'\*(.*?)\*', r'<em>\1</em>', html)
    
    return html

@app.route('/chat', methods=['POST'])
def chat():
    try:
        data = request.json
        user_message = data.get('message')
        
        if not user_message:
            return jsonify({"error": "No message provided"}), 400
        
        # Generate response using Gemini
        response = model.generate_content(user_message)
        
        # Convert markdown to HTML with styling
        formatted_response = convert_markdown_to_html(response.text)
        
        return jsonify({
            "response": formatted_response
        })
        
    except Exception as e:
        return jsonify({"error": str(e)}), 500

@app.route('/')
def serve_index():
    return send_from_directory('static', 'index.html')

@app.route('/<path:path>')
def serve_static(path):
    return send_from_directory('static', path)

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