WbRules / app.py
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from annotated_text import annotation
from json import JSONDecodeError
import logging
from markdown import markdown
import streamlit as st
from utils.haystack import query
from utils.ui import reset_results, set_initial_state
set_initial_state()
st.write("# Start building out the content of your application here")
# Search bar
question = st.text_input("Ask a question", value=st.session_state.question, max_chars=100, on_change=reset_results)
run_pressed = st.button("Run")
run_query = (
run_pressed or question != st.session_state.question
)
# Get results for query
if run_query and question:
reset_results()
st.session_state.question = question
with st.spinner("πŸ”Ž    Running your pipeline"):
try:
st.session_state.results = query(question)
except JSONDecodeError as je:
st.error(
"πŸ‘“    An error occurred reading the results. Is the document store working?"
)
except Exception as e:
logging.exception(e)
st.error("🐞    An error occurred during the request.")
if st.session_state.results:
st.write('## Do something with your results')
answers = st.session_state.results
for count, answer in enumerate(answers):
if answer.answer:
text, context = answer.answer, answer.context
start_idx = context.find(text)
end_idx = start_idx + len(text)
st.write(
markdown(context[:start_idx] + str(annotation(body=text, label="ANSWER", background="#964448", color='#ffffff')) + context[end_idx:]),
unsafe_allow_html=True,
)
else:
st.info(
"πŸ€”    Haystack is unsure whether any of the documents contain an answer to your question. Try to reformulate it!"
)