app.py

import streamlit as st
import pandas as pd
from transformers import pipeline

# Load the anomalies data
df = pd.read_csv('anomalies.csv', sep=',', decimal='.')

# Function to generate a response
def response(user_question):
    # Verifica se a pergunta é uma string
    if not isinstance(user_question, str):
        raise TypeError(f"Esperado uma string para a pergunta, mas recebeu {type(user_question)}")
    
    # Inicializa o pipeline para table-question-answering
    tqa = pipeline(task="table-question-answering", model="google/tapas-large-finetuned-wtq")
    
    # Obtém a resposta do modelo
    resposta = tqa(table=df, query=user_question)
    
    # Verifica se alguma célula foi retornada
    if len(resposta['cells']) == 0:
        raise IndexError("Nenhuma célula foi retornada pelo modelo.")
    
    # Obtém a primeira célula da resposta
    final_response = resposta['cells'][0]
    
    return final_response


# Streamlit interface
st.markdown("""
<div style='display: flex; align-items: center;'>
    <div style='width: 40px; height: 40px; background-color: green; border-radius: 50%; margin-right: 5px;'></div>
    <div style='width: 40px; height: 40px; background-color: red; border-radius: 50%; margin-right: 5px;'></div>
    <div style='width: 40px; height: 40px; background-color: yellow; border-radius: 50%; margin-right: 5px;'></div>
    <span style='font-size: 40px; font-weight: bold;'>Chatbot do Tesouro RS</span>
</div>
""", unsafe_allow_html=True)

# Chat history
if 'history' not in st.session_state:
    st.session_state['history'] = []

# Input box for user question
user_question = st.text_input("Escreva sua questão aqui:", "")

if user_question:
    # Add person emoji when typing question
    st.session_state['history'].append(('👤', user_question))
    st.markdown(f"**👤 {user_question}**")
    
    # Generate the response
    bot_response = response(user_question)
    
    # Add robot emoji when generating response and align to the right
    st.session_state['history'].append(('🤖', bot_response))
    st.markdown(f"<div style='text-align: right'>**🤖 {bot_response}**</div>", unsafe_allow_html=True)

# Clear history button
if st.button("Limpar"):
    st.session_state['history'] = []

# Display chat history
for sender, message in st.session_state['history']:
    if sender == '👤':
        st.markdown(f"**👤 {message}**")
    elif sender == '🤖':
        st.markdown(f"<div style='text-align: right'>**🤖 {message}**</div>", unsafe_allow_html=True)