app.py

import os
os.system("pip install --upgrade pip")
import streamlit as st
import openai
import json
from io import StringIO

openai.api_key = "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"  # YOUR_API_KEY 

st.title("🤖 AI ChatBot")

def load_chat_history():
    try:
        with open("chat_history.json", "r") as file:
            chat_history = json.load(file)
    except FileNotFoundError:
        chat_history = []
    return chat_history

def save_chat_history(chat_history):
    with open("chat_history.json", "w") as file:
        json.dump(chat_history, file)


def get_response(prompt, chat_history):
    chat_history.append({"user": prompt})
    response = openai.Completion.create(
        engine="text-davinci-003",
        prompt=generate_prompt(chat_history),
        max_tokens=50,
        temperature=0.7,
        top_p=1.0,
        frequency_penalty=0.0,
        presence_penalty=0.0,
    )
    chat_history.append({"bot": response.choices[0].text.strip()})
    return chat_history

###############################################
#######<<< generate_prompt >>>#################
###############################################

def generate_prompt(chat_history):
    prompt = ""
    user_count = 1
    bot_count = 1
    for message in chat_history:
        if "user" in message:
            prompt += f"User {user_count}: " + message["user"] + "\n"
            user_count += 1
        elif "bot" in message:
            prompt += f"Bot {bot_count}: " + message["bot"] + "\n"
            bot_count += 1
    return prompt

###############################################
##########<<<     chatbot     >>>##############
###############################################\

def chatbot():
    chat_history = load_chat_history()
   
    user_input = st.text_input("User Input:", max_chars=100)  
  
    col1, col2, col3 = st.columns([1, 1, 7])
    if col1.button("Send"):
        chat_history = get_response(user_input, chat_history)
        save_chat_history(chat_history)
    if col2.button("Clear"):
        chat_history = []
        save_chat_history(chat_history)
    if col3.button("Download"):
        chat_history_json = json.dumps(chat_history)
        st.download_button(
            "Download Chat History",
            data=StringIO(chat_history_json).read(),
            file_name="chat_history.json",
            mime="application/json"
        )
    
    st.subheader("Chat History")
    user_count = 1
    bot_count = 1
    for message in chat_history:
        if "user" in message:
            st.text_area(f"User {user_count}:", message["user"], height=100)
            user_count += 1
        elif "bot" in message:
            st.markdown(f"**Bot {bot_count}:** {message['bot']}", unsafe_allow_html=True)
            bot_count += 1

chatbot()