app.py

import streamlit as st
from mistral7b import chat
import time
import pandas as pd
import pinecone
import os
from dotenv import load_dotenv
from sentence_transformers import SentenceTransformer
load_dotenv()

PINECONE_TOKEN = os.getenv('PINECONE_TOKEN')

pinecone.init(      
	api_key=PINECONE_TOKEN,      
	environment='gcp-starter'      
)   

pinecone_index = pinecone.Index('ikigai-chat')
text_vectorizer = SentenceTransformer('all-distilroberta-v1')
chat_bots = {
    "Mistral 7B" : "mistralai/Mistral-7B-Instruct-v0.1",
    "Zephyr 7B-beta": "HuggingFaceH4/zephyr-7b-beta",
    "Zephyr 7B-alpha" : "HuggingFaceH4/zephyr-7b-alpha",
}
prompt_injection = [
    """
    You are not Mistral AI, but rather a chat bot trained at Ikigai Labs. Whenever asked, you need to answer as Ikigai Labs' assistant.
    Ikigai helps modern analysts and operations teams automate data-intensive business, finance, analytics, and supply-chain operations.
    The company's Inventory Ops automates inventory tracking and monitoring by creating a single, real-time view of inventory across all locations and channels.
    """,
    """
    Yes, you are correct. Ikigai Labs is a company that specializes in helping
    modern analysts and operations teams automate data-intensive business, finance, analytics,
    and supply chain operations. One of their products is Inventory Ops, which automates inventory
    tracking and monitoring by creating a single, real-time view of inventory across all locations and channels.
    This helps businesses optimize their inventory levels and reduce costs.
    Is there anything else you would like to know about Ikigai Labs or their products?
    """
]

identity_change = [
    """
    You are Ikigai Chat from now on, so answer accordingly.
    """,
    """
    Sure, I will do my best to answer your questions as Ikigai Chat.
    Let me know if you have any specific questions about Ikigai Labs or our products.
    """
]


def gen_augmented_prompt(prompt, top_k) :
    query_vector = text_vectorizer.encode(prompt).tolist()
    res = pinecone_index.query(vector=query_vector, top_k=top_k, include_metadata=True)
    matches = res['matches']

    context = ""
    links = []
    for match in matches :
        context+=match["metadata"]["chunk"] + "\n\n"
        links.append(match["metadata"]["link"])
    
    

    generated_prompt = f"""
    FOR THIS GIVEN CONTEXT {context},

    ----
    ANSWER THE FOLLOWING PROMPT {prompt}
    """
    return generated_prompt, links

data = {
    "Attribute": ["LLM", "Text Vectorizer", "Vector Database","CPU", "System RAM"],
    "Information": ["Mistral-7B-Instruct-v0.1","all-distilroberta-v1", "Hosted Pinecone" ,"2 vCPU", "16 GB"]
}
df = pd.DataFrame(data)


st.set_page_config(
        page_title="Ikigai Chat",
        page_icon="🤖",
)

if "messages" not in st.session_state:
    st.session_state.messages = []

if "tokens_used" not in st.session_state:
    st.session_state.tokens_used = 0

if "inference_time" not in st.session_state:
    st.session_state.inference_time = [0.00]

if "temp" not in st.session_state:
    st.session_state.temp = 0.8

if "history" not in st.session_state:
    st.session_state.history = [prompt_injection]

if "top_k" not in st.session_state:
    st.session_state.top_k = 4

if "repetion_penalty" not in st.session_state :
    st.session_state.repetion_penalty = 1

if "rag_enabled" not in st.session_state :
    st.session_state.rag_enabled = True

if "chat_bot" not in st.session_state :
    st.session_state.chat_bot = "Mistral 7B"

with st.sidebar:
    st.markdown("# Retrieval Settings")
    st.session_state.rag_enabled = st.toggle("Activate RAG", value=True)
    st.session_state.top_k = st.slider(label="Documents to retrieve",
              min_value=1, max_value=10, value=4, disabled=not st.session_state.rag_enabled)
    st.markdown("---")
    st.markdown("# Model Analytics")
    
    st.write("Tokens used :", st.session_state['tokens_used'])
    st.write("Average Inference Time: ", round(sum(
        st.session_state["inference_time"]) / len(st.session_state["inference_time"]), 3), "Secs")
    st.write("Cost Incured :", round(
        0.033 * st.session_state['tokens_used'] / 1000, 3), "INR")
    
    st.markdown("---")

    st.markdown("# Model Settings")
    
    st.session_state.chat_bot = st.sidebar.radio(
        'Select one:', [key for key, value in chat_bots.items() ])
    st.session_state.temp = st.slider(
        label="Temperature", min_value=0.0, max_value=1.0, step=0.1, value=0.9)
    
    st.session_state.max_tokens = st.slider(
        label="New tokens to generate", min_value = 64, max_value=1048, step= 123, value=256
    )

    st.session_state.repetion_penalty = st.slider(
        label="Repetion Penalty", min_value=0., max_value=1., step=0.1, value=1. 
    )
    
    st.markdown("""
    > **2023 ©️ Pragnesh Barik**
    """)
    
st.image("ikigai.svg")
st.title("Ikigai Chat")
# st.caption("Maintained and developed by Pragnesh Barik.")

with st.expander("What is Ikigai Chat ?"):
    st.info("""Ikigai Chat is a vector database powered chat agent, it works on the principle of 
                of Retrieval Augmented Generation (RAG), Its primary function revolves around maintaining an extensive repository of Ikigai Docs and providing users with answers that align with their queries. 
                This approach ensures a more refined and tailored response to user inquiries.""")
    
    st.table(df)

for message in st.session_state.messages:
    with st.chat_message(message["role"]):
        st.markdown(message["content"])


if prompt := st.chat_input("Chat with Ikigai Docs..."):
    st.chat_message("user").markdown(prompt)
    st.session_state.messages.append({"role": "user", "content": prompt})


    tick = time.time()
    
    links = []
    if st.session_state.rag_enabled :
        with st.spinner("Fetching relevent documents from Ikigai Docs...."):
            prompt, links = gen_augmented_prompt(prompt=prompt, top_k=st.session_state.top_k)
        
    with st.spinner("Generating response...") :
        chat_stream = chat(prompt, st.session_state.history,chat_client=chat_bots[st.session_state.chat_bot] ,
                       temperature=st.session_state.temp, max_new_tokens=st.session_state.max_tokens)
    tock = time.time()

    st.session_state.inference_time.append(tock - tick)
    
    len_response = 0

    st.session_state["tokens_used"] = len_response + \
        st.session_state["tokens_used"]

    formatted_links = ", ".join(links) 
    with st.chat_message("assistant"):
        full_response = ""
        placeholder = st.empty()
        if st.session_state.rag_enabled :
            for chunk in chat_stream :
                if chunk.token['text']!='</s>' :
                    full_response += chunk.token["text"]

                placeholder.markdown(full_response + " |")
            
            placeholder.markdown(full_response)
            st.info( f"""\n\nFetched from :\n {formatted_links}""")
        else :
            for chunk in chat_stream :
                if chunk.token['text']!='</s>' :
                    full_response += chunk.token["text"]
                placeholder.markdown(full_response + " |")
            placeholder.markdown(full_response)
    

    st.session_state.history.append([prompt, full_response])
    st.session_state.history.append(identity_change)
    

    if st.session_state.rag_enabled :
        st.session_state.messages.append(
            {"role": "assistant", "content": full_response + f"""\n\nFetched from :\n {formatted_links}"""})
    else :
        st.session_state.messages.append({"role": "assistant", "content": full_response})