import streamlit as st
from typing import Set
import requests
import json
import yaml
import st_auth 
import boto3

authenticator=st_auth.get_authenticator()
from botocore.exceptions import ClientError

st_auth.st_authenticate(authenticator)
st.header("Chatbot Editais")
url="https://dcrwpxp8lj-vpce-08d695f6315d510eb.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.text_input("Prompt",placeholder="Enter your prompt here..")
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:
    with st.spinner("Generating response.."):
        payload=st.session_state["chat_history"]+[{"role":"user","content":prompt}]
        content={"message":payload}
        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)['json']
        #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.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}]
if st.session_state["chat_answer_history"]:
    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)