main.py

from flask import Flask, request, make_response
import os
from datetime import datetime
import logging
from dotenv import load_dotenv
from heyoo import WhatsApp
import assemblyai as aai
import openai
from utility import generateResponse, parse_multiple_transactions, create_inventory, create_sale, read_datalake, delete_transaction
from google.cloud import firestore
import ast
import base64
import requests


# load env data
load_dotenv()

# messenger object
messenger = WhatsApp(
    os.environ["whatsapp_token"],
    phone_number_id=os.environ["phone_number_id"]
)

aai.settings.api_key = os.environ["aai_key"]
transcriber = aai.Transcriber()

# Authenticate to Firestore with the JSON account key
db = firestore.Client.from_service_account_json("firestore-key.json")

app = Flask(__name__)

VERIFY_TOKEN = "30cca545-3838-48b2-80a7-9e43b1ae8ce4"


img_ID = "344744a88ad1098"
img_secret = "3c542a40c215327045d7155bddfd8b8bc84aebbf"

url = "https://api.imgur.com/3/image"
headers = {"Authorization": f"Client-ID {img_ID}"}


# Interactive button
def messenger_button(recipient_phone, message, header='Transaction Confirmation', footer='', btn_name='Confirm Details'):
    messenger.send_button(
        recipient_id=recipient_phone,
        button={
            "header": f"{header}",
            "body": f"{message}",
            "footer": f"{footer}",
            "action": {
                "button": f"{btn_name}",
                "sections": [
                    {
                        "title": "iBank",
                        "rows": [
                            {"id": "confirm", "title": "Record Transaction", "description": ""},
                            {"id": "cancel", "title": "Cancel Transaction", "description": ""},
                        ],
                    }
                ],
            },
        },
    )

def messenger_reply_button(recipient_phone, message, header_message = "*Please confirm the details below before we proceed*:\n\n"):
    messenger.send_reply_button(
        recipient_id=f"{recipient_phone}",
        button={
            "type": "button",
            "body": {
                "text": f"{header_message} {message}"
            },
            "action": {
                "buttons": [
                    {
                        "type": "reply",
                        "reply": {
                            "id": "confirm",
                            "title": "Confirm"
                        }
                    },
                    {
                        "type": "reply",
                        "reply": {
                            "id": "cancel",
                            "title": "Cancel"
                        }
                    }
                ]
            }
        },
    )

def respond(query_str: str):
    response = "hello, I don't have a brain yet"
    return response

def persist_temporary_transaction(transactions, mobile):
    """
    Persists the transaction data temporarily in Firestore.
    """
    # intent = transactions[0]['intent'].lower()
    temp_ref = db.collection("users").document(mobile).collection("temp_transactions").document('pending-user-action')
    data = {
        "transactions": transactions,
        "status": "pending",
        "created_at": datetime.now().isoformat()
    }
    temp_ref.set(data)
    return True
    

def process_user_msg(message, mobile):
    response = str(generateResponse(message))
    parsed_trans_data = parse_multiple_transactions(response)
    # messenger.send_message(f"{response} \n\n {parsed_trans_data}", mobile)
    
    logging.info(f"\nAnswer: {response}\n")
    intent = parsed_trans_data[0]['intent'].lower()
    if intent == 'read':
        response2 = str(read_datalake(mobile, message))
        # Check if response is a string and represents a valid image path
        if isinstance(response2, str) and os.path.isfile(os.path.join(response2)):
            image_path = os.path.join(response2)
            print("My image path:", image_path)
            with open(image_path, "rb") as file:
                data = file.read()
                base64_data = base64.b64encode(data)

            # Upload image to Imgur and get URL
            response2 = requests.post(url, headers=headers, data={"image": base64_data})
            url1= response2.json()["data"]["link"]
            print(url1)
        
            messenger.send_image(image=url1, recipient_id=mobile)
        else:
            messenger.send_message(f"{response} \n\n {response2}", recipient_id=mobile)
    else: 
        # Persist transaction data temporarily for Create, Update, or Delete operations
        persist = persist_temporary_transaction(parsed_trans_data, mobile)
        if persist:
            # messenger.send_message(f"{response} \n\n {parsed_trans_data}", mobile)
            # Give user the chance to confirm/cancel transaction before processing other intents
            messenger_reply_button(mobile, f"{response} \n \n{parsed_trans_data}")
        else:
            messenger.send_message("Please try again!", mobile)

    return True 
    

def process_intent(parsed_trans_data, mobile):
    
    intent = parsed_trans_data[0]['intent'].lower()
    trans_type = parsed_trans_data[0]['transaction_type'].lower()
    
    if intent == 'create':
        if trans_type in ('purchase', 'purchases', 'inventory'):
            if create_inventory(mobile, parsed_trans_data):
                firestore_msg = "Transaction recorded successfully!"
            else:
                firestore_msg = "Sorry, could not record transaction!"
                
        elif trans_type in ('sale', 'sales'):
            if create_sale(mobile, parsed_trans_data):
                firestore_msg = "Transaction recorded successfully!"
            else:
                firestore_msg = "Sorry, could not record transaction!"
                
    elif intent == 'update':
        pass
            
    elif intent == 'delete':
        item = parsed_trans_data[0]['details']['item']
        item_deleted = delete_transaction(mobile, parsed_trans_data)
        if item_deleted:
            firestore_msg = f"You successfully deleted {item} from {trans_type}!"
        else:
            firestore_msg = f"Sorry, could not delete the {item} from {trans_type}!"
            
    # elif intent == 'read':
    #     response = str(read_datalake(mobile, message))
    #     parsed_trans_data = ""
    #     firestore_msg = response
                    
    else:
        firestore_msg = f'The detected intent, {intent}, is not currently supported!'

    # return firestore_msg, parsed_trans_data, response
    return firestore_msg

def handle_interactive_response(mobile, button_id):
    """
    Handles the user's button response (Confirm or Cancel).
    """
    doc_id = 'pending-user-action'
    temp_ref = db.collection("users").document(mobile).collection("temp_transactions").document(doc_id)
    transaction = temp_ref.get()

    if transaction.exists:
        transaction_data = transaction.to_dict()
        
        if button_id == "confirm":
            # Move to the appropriate collection
            transactions = transaction_data["transactions"]
            msg = process_intent(transactions, mobile)
            # Mark as confirmed or delete temporary record
            temp_ref.delete()
            messenger.send_message(f"{msg}", recipient_id = mobile)
        
        elif button_id == "cancel":
            # Delete the temporary record
            temp_ref.delete()
            messenger.send_message("Transaction has been canceled.", recipient_id = mobile)
        
        else:
            messenger.send_message("Invalid action. Please try again.", recipient_id = mobile)
    else:
        messenger.send_message("No pending transaction found.", recipient_id = mobile)



@app.route("/", methods=["GET", "POST"])
def hook():
    if request.method == "GET":
        if request.args.get("hub.verify_token") == VERIFY_TOKEN:
            logging.info("Verified webhook")
            response = make_response(request.args.get("hub.challenge"), 200)
            response.mimetype = "text/plain"
            return response
        logging.error("Webhook Verification failed")
        return "Invalid verification token"

    # get message update..
    data = request.get_json()
    changed_field = messenger.changed_field(data)

    if changed_field == "messages":
        new_message = messenger.get_mobile(data)
        if new_message:
            mobile = messenger.get_mobile(data)
            message_type = messenger.get_message_type(data)
            
            if message_type == "text":
                message = messenger.get_message(data)
                # Handle greetings
                if message.lower() in ("hi", "hello", "hola", "help", "how are you"):
                    response = "Hi there! My name is SmartLedger. How can I help you today?"
                    
                    messenger.send_message(message=f"{response}", recipient_id=mobile)
                else:
                    process_user_msg(message, mobile)
                    # messenger.send_message(message=f"User message processed!", recipient_id=mobile)

            elif message_type == "audio":
                audio = messenger.get_audio(data)
                audio_id, mime_type = audio["id"], audio["mime_type"]
                audio_url = messenger.query_media_url(audio_id)
                audio_filename = messenger.download_media(audio_url, mime_type)
                transcript = transcriber.transcribe(audio_filename)
                print(audio_filename)
                print(transcript.text)
                transcribed_message = transcript.text
            
                # logging.info(f"\nAudio: {audio}\n")
                process_user_msg(transcribed_message, mobile)
                # firestore_msg1, parsed_trans_data1, response1 = process_user_msg(transcribed_message, mobile)
                # messenger.send_message(message=f"Raw Response: {response1}, \n \n Parsed Response: {parsed_trans_data1}, \n \n Final Response: {firestore_msg1}", recipient_id=mobile)
                
            elif message_type == "interactive":
                message_response = messenger.get_interactive_response(data)
                interactive_type = message_response.get("type")
                message_id = message_response[interactive_type]["id"]
                message_text = message_response[interactive_type]["title"]
                logging.info(f"Interactive Message: {interactive_type} {message_id}: {message_text}")
                # messenger.send_message(message = f"Interactive type: {interactive_type}\n Message ID: {message_id} \n Message body: {message_body}", recipient_id=mobile)

                # Handle either create, update, or delete operation based on user action 
                handle_interactive_response(mobile, message_id)
            else:
                messenger.send_message(message=f"Please send me text or audio messages", recipient_id=mobile)

            

    return "ok"

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