app.py

import streamlit as st
from streamlit_chat import message
import requests

url = 'https://api.webraft.in/v1/chat/completions'

import json
# Setting page title and header
st.set_page_config(page_title="WebraftAI Chat", page_icon=":robot_face:")
st.markdown("<h1 style='text-align: center;'>WebraftAI Chat/h1>", unsafe_allow_html=True)



# Initialise session state variables
if 'generated' not in st.session_state:
    st.session_state['generated'] = []
if 'past' not in st.session_state:
    st.session_state['past'] = []
if 'messages' not in st.session_state:
    st.session_state['messages'] = [
        {"role": "system", "content": "You are a helpful assistant."}
    ]
if 'model_name' not in st.session_state:
    st.session_state['model_name'] = []
if 'cost' not in st.session_state:
    st.session_state['cost'] = []
if 'total_tokens' not in st.session_state:
    st.session_state['total_tokens'] = []
if 'total_cost' not in st.session_state:
    st.session_state['total_cost'] = 1
if 'api_key' not in st.session_state:
    st.session_state['api_key']=""

# Sidebar - let user choose model, show total cost of current conversation, and let user clear the current conversation
st.sidebar.title("Settings")
model_name = st.sidebar.selectbox("Model:", ("gpt3.5","gpt4-32k"))
counter_placeholder = st.sidebar.empty()
api_key = st.sidebar.text_input("API_Key", value=st.session_state['api_key'], max_chars=None, key=None, type="password", label_visibility="visible")
st.session_state['api_key'] = api_key
clear_button = st.sidebar.button("Clear Conversation", key="clear")
headers = {
    'Content-Type': 'application/json',
    'Authorization': f'Bearer {api_key}',
}
# Map model names to OpenAI model IDs
if model_name == "gpt3.5":
    model = "gpt-3.5-turbo"
else:
    model = "gpt4-32k"

# reset everything
if clear_button:
    st.session_state['generated'] = []
    st.session_state['past'] = []
    st.session_state['messages'] = [
        {"role": "system", "content": "You are a helpful assistant."}
    ]
    st.session_state['number_tokens'] = []
    st.session_state['model_name'] = []
    st.session_state['cost'] = []
    st.session_state['total_cost'] = 0.0
    st.session_state['total_tokens'] = []



def evaluate(model, question, max_tokens=4096, top_p=0.7,temperature=0.1):

    data = {
        "model": model,
        "max_tokens": max_tokens,
        "messages": question,
        "temperature":temperature,
        "top_p":top_p

    }
    response = requests.post(url, headers=headers, json=data)
    response = response.json()
    sentence = response['choices'][0]['message']['content']

    return sentence

# generate a response
def generate_response(prompt):
    st.session_state['messages'].append({"role": "user", "content": prompt})
    question = st.session_state['messages']

    sentence = evaluate(model, question)

    response = sentence
    st.session_state['messages'].append({"role": "assistant", "content": response})

    # print(st.session_state['messages'])
    total_tokens = "153"
    prompt_tokens = "153"
    completion_tokens = "153"
    return response, total_tokens, prompt_tokens, completion_tokens


# container for chat history
response_container = st.container()
# container for text box
container = st.container()

with container:
    with st.form(key='my_form', clear_on_submit=True):
        user_input = st.text_area("You:", key='input', height=2)
        submit_button = st.form_submit_button(label='✉')

    if submit_button and user_input:
        output, total_tokens, prompt_tokens, completion_tokens = generate_response(user_input)
        st.session_state['past'].append(user_input)
        st.session_state['generated'].append(output)
        st.session_state['model_name'].append(model_name)
        st.session_state['total_tokens'].append(total_tokens)

        # from https://openai.com/pricing#language-models
        if model_name == "30M_6.1K":
            cost = "1"
        else:
            cost = "2"



if st.session_state['generated']:
    with response_container:
        for i in range(len(st.session_state['generated'])):
            message(st.session_state["past"][i], is_user=True, key=str(i) + '_user')
            message(st.session_state["generated"][i], key=str(i))