app.py

from pydantic import NoneStr
import os
import mimetypes
import validators
import requests
import tempfile
import gradio as gr
import openai
import re
import json
from transformers import pipeline
import matplotlib.pyplot as plt
import plotly.express as px


class SentimentAnalyzer:
    def __init__(self):
        self.model="facebook/bart-large-mnli"
        openai.api_key=os.getenv("OPENAI_API_KEY")
    def analyze_sentiment(self, text):
        pipe = pipeline("zero-shot-classification", model=self.model)
        label=["positive","negative","neutral"]
        result = pipe(text, label)
        sentiment_scores= {result['labels'][0]:result['scores'][0],result['labels'][1]:result['scores'][1],result['labels'][2]:result['scores'][2]}
        sentiment_scores_str = f"Positive: {sentiment_scores['positive']:.2f}, Neutral: {sentiment_scores['neutral']:.2f}, Negative: {sentiment_scores['negative']:.2f}"
        return sentiment_scores_str
    def emotion_analysis(self,text):
        prompt = f""" Your task is to analyze {text} and predict the emotion using scores. Emotions are categorized into the following list: Sadness, Happiness, Joy, Fear, Disgust, and Anger. You need to provide the emotion with the highest score. The scores should be in the range of 0.0 to 1.0, where 1.0 represents the highest intensity of the emotion.
Please analyze the text and provide the output in the following format: emotion: score [with one result having the highest score]."""
        response = openai.Completion.create(
            model="text-davinci-003",
            prompt=prompt,
            temperature=1,
            max_tokens=60,
            top_p=1,
            frequency_penalty=0,
            presence_penalty=0
        )

        message = response.choices[0].text.strip().replace("\n","")
        print(message)
        return message

    def analyze_sentiment_for_graph(self, text):
        pipe = pipeline("zero-shot-classification", model=self.model)
        label=["positive", "negative", "neutral"]
        result = pipe(text, label)
        sentiment_scores = {
            result['labels'][0]: result['scores'][0],
            result['labels'][1]: result['scores'][1],
            result['labels'][2]: result['scores'][2]
        }
        return sentiment_scores

    def emotion_analysis_for_graph(self,text):

        list_of_emotion=text.split(":")
        label=list_of_emotion[0]
        score=list_of_emotion[1]
        score_dict={
          label:float(score)
        }
        print(score_dict)
        return score_dict


class Summarizer:
    def __init__(self):
        openai.api_key=os.getenv("OPENAI_API_KEY")
    def generate_summary(self, text):
        model_engine = "text-davinci-003"
        prompt = f"""summarize the following conversation delimited by triple backticks.
                     write within 30 words.
                     ```{text}``` """
        completions = openai.Completion.create(
            engine=model_engine,
            prompt=prompt,
            max_tokens=60,
            n=1,
            stop=None,
            temperature=0.5,
        )
        message = completions.choices[0].text.strip()
        return message

history_state = gr.State()
summarizer = Summarizer()
sentiment = SentimentAnalyzer()

class LangChain_Document_QA:

    def __init__(self):
        openai.api_key=os.getenv("OPENAI_API_KEY")

    def _add_text(self,history, text):
        history = history + [(text, None)]
        history_state.value = history
        return history,gr.update(value="", interactive=False)

    def _agent_text(self,history, text):
        response = text
        history[-1][1] = response
        history_state.value = history
        return history

    def _chat_history(self):
        history = history_state.value
        formatted_history = " "
        for entry in history:
            customer_text, agent_text = entry
            formatted_history += f"Patient: {customer_text}\n"
            if agent_text:
                formatted_history += f"Psycotherapist Bot: {agent_text}\n"
        return formatted_history

    def _display_history(self):
        formatted_history=self._chat_history()
        summary=summarizer.generate_summary(formatted_history)
        return summary

    def _display_graph(self,sentiment_scores):
        labels = sentiment_scores.keys()
        scores = sentiment_scores.values()
        fig = px.bar(x=scores, y=labels, orientation='h', color=labels, color_discrete_map={"Negative": "red", "Positive": "green", "Neutral": "gray"})
        fig.update_traces(texttemplate='%{x:.2f}%', textposition='outside')
        fig.update_layout(height=500, width=200)
        return fig

    def _history_of_chat(self):
        history = history_state.value
        formatted_history = ""
        client=""
        agent=""
        for entry in history:
            customer_text, agent_text = entry
            client+=customer_text
            formatted_history += f"Patient: {customer_text}\n"
            if agent_text:
                agent+=agent_text
                formatted_history += f"Mental Healthcare Doctor Chatbot: {agent_text}\n"
        return client,agent


    def _suggested_answer(self,text):
      try:
        history = self._chat_history()
        try:
          file_path = "patient_details.json"
          with open(file_path) as file:
              patient_details = json.load(file)
        except:
          pass

        prompt = f"""As an empathic AI psychotherapist chatbot, provide effective solutions to patients' mental health concerns.
              if patient say thanking tone message to end the conversation with a thanking greeting when the patient expresses gratitude.
              Analyse the patient json If asked for information take it from {patient_details}
              Chat History:[{history}]
              Patient: [{text}]
              Perform as Mental Healthcare Doctor Chatbot
                 """
        response = openai.Completion.create(
            model="text-davinci-003",
            prompt=prompt,
            temperature=0,
            max_tokens=500,
            top_p=1,
            frequency_penalty=0,
            presence_penalty=0.6,
        )

        message = response.choices[0].text.strip()
        if  ":" in message:
          message = re.sub(r'^.*:', '', message)
        return message.strip()
      except:
        return "How can I help you?"



    def _text_box(self,customer_emotion,customer_sentiment_score):
        customer_score = ", ".join([f"{key}: {value:.2f}" for key, value in customer_sentiment_score.items()])
        return f"customer_emotion:{customer_emotion}\nCustomer_sentiment_score:{customer_score}"

    def _on_sentiment_btn_click(self):
        client=self._history_of_chat()

        customer_emotion=sentiment.emotion_analysis(client)
        customer_sentiment_score = sentiment.analyze_sentiment_for_graph(client)

        scores=self._text_box(customer_emotion,customer_sentiment_score)

        customer_fig=self._display_graph(customer_sentiment_score)
        customer_fig.update_layout(title="Sentiment Analysis",width=770)

        customer_emotion_score = sentiment.emotion_analysis_for_graph(customer_emotion)

        customer_emotion_fig=self._display_graph(customer_emotion_score)
        customer_emotion_fig.update_layout(title="Emotion Analysis",width=770)

        return scores,customer_fig,customer_emotion_fig


    def clear_func(self):
      history_state.clear()

    def gradio_interface(self):
      with gr.Blocks(css="style.css",theme=gr.themes.Soft()) as demo:
          with gr.Row():
            gr.HTML("""<center><img class="image" src="https://www.syrahealth.com/images/SyraHealth_Logo_Dark.svg" alt="Image" width="210" height="210"></center>
            """)
          with gr.Row():
            gr.HTML("""<center><h1>AI Mental Healthcare ChatBot</h1></center>""")
          chatbot = gr.Chatbot([], elem_id="chatbot").style(height=360)
          with gr.Row():
              with gr.Column(scale=0.8):
                  txt = gr.Textbox(
                      show_label=False,
                      placeholder="Patient").style(container=False)
            
              with gr.Column(scale=0.2):
                  emptyBtn = gr.Button("🧹 Clear",elem_classes="height")
          with gr.Row():
            with gr.Column(scale=0.80):
                txt3 =gr.Textbox(
                      show_label=False,
                      placeholder="AI Healthcare Suggesstion").style(container=False)
            with gr.Column(scale=0.20, min_width=0):
                button=gr.Button(value="🚀send")
          with gr.Row():
              with gr.Column(scale=0.50):
                  txt4 =gr.Textbox(
                      show_label=False,
                      lines=4,
                      placeholder="Summary").style(container=False)
              with gr.Column(scale=0.50):
                  txt5 =gr.Textbox(
                      show_label=False,
                      lines=4,
                      placeholder="Sentiment").style(container=False)
          with gr.Row():
              with gr.Column(scale=0.50, min_width=0):
                  end_btn=gr.Button(value="End")
              with gr.Column(scale=0.50, min_width=0):
                  Sentiment_btn=gr.Button(value="📊",callback=self._on_sentiment_btn_click)
          with gr.Row():
              gr.HTML("""<center><h1>Sentiment and Emotion Score Graph</h1></center>""")
          with gr.Row():
              with gr.Column(scale=0.50, min_width=0):
                  plot =gr.Plot(label="Patient", size=(500, 600))
              with gr.Column(scale=0.50, min_width=0):
                  plot_3 =gr.Plot(label="Patient_Emotion", size=(500, 600))


          txt_msg = txt.submit(self._add_text, [chatbot, txt], [chatbot, txt])
          txt_msg.then(lambda: gr.update(interactive=True), None, [txt])
          txt.submit(self._suggested_answer,txt,txt3)
          button.click(self._agent_text, [chatbot,txt3], chatbot)
          end_btn.click(self._display_history, [], txt4)
          emptyBtn.click(self.clear_func,[],[])
          emptyBtn.click(lambda: None, None, chatbot, queue=False)

          Sentiment_btn.click(self._on_sentiment_btn_click,[],[txt5,plot,plot_3])

      demo.title = "AI Mental Healthcare ChatBot"
      demo.launch()
document_qa =LangChain_Document_QA()
document_qa.gradio_interface()