import streamlit as st
from typing import Set
import requests
import json
import yaml
import st_auth 
import boto3
from botocore.exceptions import ClientError
import jwt
headers = st.context.headers
import streamlit as st

# Using a list of options

options = ["English", "Portugues", "Espanhol",]
language = st.selectbox("Response language:", options)
id_token = headers.get('x-amzn-oidc-data')
decoded = jwt.decode(id_token, options={"verify_signature": False})
        
        # Tenta diferentes campos onde o user_id pode estar
user_id = (
            decoded.get("sub") or           # Subject (padrão JWT)
            decoded.get("cognito:username") or  # Username do Cognito
            decoded.get("username") or      # Username alternativo
            decoded.get("user_id")          # Campo customizado
        )
email=decoded.get("email")
st.header("Assistente Produtos Servicos")
url="https://xexm2wsz07-vpce-05915540d0592b921.execute-api.us-east-1.amazonaws.com/dev"
payload=[]
message_history=[]
if "user_prompt_history" not in st.session_state:
    st.session_state["user_prompt_history"]=[]
if "chat_answer_history" not in st.session_state:
    st.session_state["chat_answer_history"]=[]
if "chat_history" not in st.session_state:
    st.session_state["chat_history"] = []
prompt=st.chat_input(placeholder="Digite uma mensagem...",key="prompt")
for generated_response, user_query in zip(st.session_state["chat_answer_history"],st.session_state["user_prompt_history"]):
        st.chat_message("user").write(user_query)
        st.chat_message("assistant").write(generated_response)
def create_sources_string(source_urls: Set[str])->str:
    if not source_urls:
        return ""
    source_list=list(source_urls)
    source_list.sort()
    sources_string="source:\n"
    for i, source in enumerate(source_list):
        sources_string+=f"{i+1}, {source}\n"
    return sources_string
if prompt:
    st.chat_message("user").write(prompt)
    with st.spinner("Generating response.."):
        payload=[{"role":"user","content":prompt}]
        content={"message":payload,"chat_history":st.session_state["chat_history"],"username":user_id,"origem":"Front","email":email,"language":language}
        headers={"Content-type":"application/json","x-api-key":json.loads(st_auth.get_secret())['api-gateway-api-key']}
        generated_response=json.loads(requests.post(url,json=content,headers=headers).text)
        if 'chat_history' in generated_response:
            if st.session_state["chat_history"] == []:
                st.session_state["chat_history"] = generated_response['chat_history']
        if 'json' in generated_response: 
            generated_response=generated_response['json']
        if 'message' in generated_response and generated_response['message']=="Endpoint request timed out":
            generated_response="Falta de dados: Por favor encaminhe a conversa para a equipe desenvolvedora"
        #generated_response=[{"role":"user","content":prompt}]
        # sources= set([doc.metadata["source"] for doc in generated_response['context']])
        #formatted_response=f"{generated_response['answer']} \n\n {create_sources_string(sources)}"
        formatted_response=generated_response
        st.chat_message("assistant").write(formatted_response)
        st.session_state["user_prompt_history"].append(prompt)
        st.session_state["chat_answer_history"].append(formatted_response)
        st.session_state["chat_history"]=st.session_state["chat_history"]+[{"role":"user","content":prompt}]+[{"role":"assistant","content":formatted_response}]
        st.session_state.user_input=""