app.py

# Import dependencies
import os
import gradio as gr
from llama_index import GPTVectorStoreIndex
from langchain.prompts.prompt import PromptTemplate
from langchain.llms import OpenAI
from langchain.chains import ChatVectorDBChain
from query_data import get_chain
from response import get_response

_template = """Paraphrase the message and encourage to share more"""
PARAPHRASE_MESSAGE_PROMPT= PromptTemplate.from_template(_template)

template = """You are an AI psychotherapist. You are empathic and encourage humans to share. If asked for information,
provide it and then gently inquire if they want to talk about it. If you don't know the answer, just say 
"Hmm, I'm not sure." Don't try to make up an answer. If the question is not about mental health or resources, 
politely inform them that you are tuned to only answer questions about mental health and well being."""

Message: {message}

class ChatWrapper:

    def __call__(
        self, inp: str, history: str, chain
    ):

          
# Execute the chat functionality.           
        output = chain({"message": inp, "chat_history": history})["response"]        
        history.append((inp, output))     
        return history

chat = ChatWrapper()
chatbot = gr.Chatbot()

block = gr.Blocks(css=".gradio-container {background-color: lightblue}")

with block:
    gr.HTML("<center><h2>Omdena AI Chatbot For Mental Health and Well Being</h2></center>")
    
    gr.HTML("WELCOME<br>"
            "I am an AI ChatBot and I am here to assist you with whatever is bothering you. "
            "Our conversation is strictly confidential and I will not remember it when you come back another time."     
        )
        
    with gr.Row():
        message = gr.Textbox(
            label="What would you like to talk about?",
            type = "text",
        )

    with gr.Row():
        submit = gr.Button(value="Send", variant="secondary").style(full_width=False)
        submit.click(chat, inputs=[message], outputs=[chat])
    
    gr.Examples(
        examples=[
            "I feel lonely",
            "I'm having problems at home",
            "I am looking for some resources",
                 ],
        inputs=message,
    ) 


block.launch(debug=True)