# Project: WhatsApp Chatbot
# Author: RSK World
# Email: info@rskworld.com, support@rskworld.com
# Website: https://rskworld.in
# Phone: +91 93305 39277
# Year: 2026
# Description: WhatsApp-integrated chatbot for business messaging and customer engagement.

from flask import Flask, request, render_template, jsonify, send_file
from twilio.twiml.messaging_response import MessagingResponse
from bot_logic import process_message, load_bookings, get_analytics_data
import os
import csv
import io
from datetime import datetime

app = Flask(__name__)

@app.route("/")
def home():
    """Renders the landing page for the WhatsApp Chatbot demo."""
    return render_template("index.html")

@app.route("/admin")
def admin():
    """Renders the Admin Dashboard."""
    bookings = load_bookings()
    return render_template("admin.html", bookings=bookings)

@app.route("/api/analytics")
def analytics():
    """API endpoint for dashboard charts."""
    return jsonify(get_analytics_data())

@app.route("/api/export_bookings")
def export_bookings():
    """Exports bookings to CSV."""
    bookings = load_bookings()
    
    # Create CSV in memory
    si = io.StringIO()
    cw = csv.writer(si)
    cw.writerow(["Timestamp", "Name", "Phone", "Preferred Date", "Topic"])
    
    for b in bookings:
        cw.writerow([b.get("timestamp"), b.get("name"), b.get("phone"), b.get("date"), b.get("topic")])
        
    output = io.BytesIO()
    output.write(si.getvalue().encode('utf-8'))
    output.seek(0)
    
    filename = f"bookings_{datetime.now().strftime('%Y%m%d')}.csv"
    return send_file(output, mimetype="text/csv", as_attachment=True, download_name=filename)

@app.route("/api/broadcast", methods=["POST"])
def broadcast():
    """Simulates sending a broadcast message."""
    data = request.json
    message = data.get("message", "")
    # In a real app, you would iterate over a User DB and call Twilio API here.
    return jsonify({"status": "success", "count": 142}) # Simulated count

@app.route("/webhook", methods=["POST"])
def webhook():
    """Receives incoming WhatsApp messages from Twilio."""
    incoming_msg = request.values.get('Body', '').lower()
    sender = request.values.get('From', '')

    response = MessagingResponse()
    msg = response.message()
    
    # Process the message and get the reply text
    reply_text = process_message(incoming_msg, sender)
    msg.body(reply_text)

    return str(response)

if __name__ == "__main__":
    app.run(debug=True, port=5000)