"""
Flask Web Interface for Conversational AI Bot
Provides a web-based interface for the chatbot.

Developer: RSK World
Website: https://rskworld.in
Email: help@rskworld.in
Phone: +91 93305 39277
Year: 2026
"""

from flask import Flask, render_template, request, jsonify, session
from chatbot import ConversationalAIBot
import uuid
import os

app = Flask(__name__)
app.secret_key = os.urandom(24)

# Store bot instances per session
bot_instances = {}


def get_bot():
    """Get or create bot instance for current session."""
    if 'session_id' not in session:
        session['session_id'] = str(uuid.uuid4())
    
    session_id = session['session_id']
    
    if session_id not in bot_instances:
        bot_instances[session_id] = ConversationalAIBot(session_id)
    
    return bot_instances[session_id]


@app.route('/')
def index():
    """Render main chat interface."""
    return render_template('index.html')


@app.route('/api/chat', methods=['POST'])
def chat():
    """Handle chat API requests."""
    try:
        data = request.get_json()
        user_message = data.get('message', '').strip()
        
        if not user_message:
            return jsonify({
                'success': False,
                'error': 'Message is required'
            }), 400
        
        bot = get_bot()
        response = bot.chat(user_message)
        
        # Get additional metadata
        sentiment = bot.get_sentiment_analysis(user_message)
        context = bot.get_context_summary()
        
        return jsonify({
            'success': True,
            'response': response,
            'sentiment': sentiment.get('sentiment'),
            'sentiment_score': sentiment.get('score'),
            'context': context
        })
    
    except Exception as e:
        return jsonify({
            'success': False,
            'error': str(e)
        }), 500


@app.route('/api/history', methods=['GET'])
def get_history():
    """Get conversation history."""
    try:
        bot = get_bot()
        limit = request.args.get('limit', 10, type=int)
        history = bot.get_conversation_history(limit=limit)
        
        return jsonify({
            'success': True,
            'history': history
        })
    
    except Exception as e:
        return jsonify({
            'success': False,
            'error': str(e)
        }), 500


@app.route('/api/analytics', methods=['GET'])
def get_analytics():
    """Get conversation analytics."""
    try:
        bot = get_bot()
        analytics = bot.get_analytics()
        summary = bot.get_analytics_summary()
        
        return jsonify({
            'success': True,
            'analytics': analytics,
            'summary': summary
        })
    
    except Exception as e:
        return jsonify({
            'success': False,
            'error': str(e)
        }), 500


@app.route('/api/clear', methods=['POST'])
def clear_session():
    """Clear conversation session."""
    try:
        bot = get_bot()
        bot.clear_session()
        
        return jsonify({
            'success': True,
            'message': 'Session cleared successfully'
        })
    
    except Exception as e:
        return jsonify({
            'success': False,
            'error': str(e)
        }), 500


@app.route('/api/language', methods=['POST'])
def set_language():
    """Set conversation language."""
    try:
        data = request.get_json()
        language_code = data.get('language', 'en')
        
        bot = get_bot()
        success = bot.set_language(language_code)
        
        return jsonify({
            'success': success,
            'language': bot.get_current_language(),
            'message': f'Language set to {language_code}' if success else 'Invalid language code'
        })
    
    except Exception as e:
        return jsonify({
            'success': False,
            'error': str(e)
        }), 500


if __name__ == '__main__':
    # Create templates directory if it doesn't exist
    os.makedirs('templates', exist_ok=True)
    os.makedirs('static', exist_ok=True)
    
    app.run(debug=True, host='0.0.0.0', port=5000)

MIT License

Copyright (c) 2026 RSK World

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Developer: RSK World
Website: https://rskworld.in
Email: help@rskworld.in
Phone: +91 93305 39277
Year: 2026