import requests 
import os, signal 
from flask import Flask, request 
import openai 

app = Flask(__name__) 

#This is API key for OpenAI 
openai.api_key = '<YOUR OPENAI API KEY>' 

# This is page access token that you get from facebook developer console.
PAGE_ACCESS_TOKEN = '<Your PAGE ACCESS TOKEN>' 

# This is API key for facebook messenger. 
API="https://graph.facebook.com/LATEST-API-VERSION/me/messages?access_token="+PAGE_ACCESS_TOKEN 

@app.route("/", methods=['POST']) 
def fbwebhook(): 
    data = request.get_json() 
    try: 
        if data['entry'][0]['messaging'][0]['sender']['id']:
            message = data['entry'][0]['messaging'][0]['message'] 
            sender_id = data['entry'][0]['messaging'][0]['sender']['id'] 
            chat_gpt_input=message['text'] 
            print(chat_gpt_input) 
            completion = openai.ChatCompletion.create(
                            model="gpt-3.5-turbo", 
                            messages=[{"role": "user", "content": chat_gpt_input}])

            response = completion['choices'][0]['message']['content'] 
            print("ChatGPT Response=>",chatbot_res) 
            return chatbot_res 

    except Exception as e: 
        print(e) 
        pass 
    return '200 OK HTTPS.' 
    
if __name__ =='__main__': 
    app.run()