import os; import json; import requests
import streamlit as st
ES_URL = os.environ.get("ES_URL")

question = 'What is the capital of Netherlands?'
query_text = 'Query used for keyword search (you can also edit, and experiment with the responses)'
written_question = st.text_input(query_text, question)
if written_question:
    question = written_question
    
if st.button('Run keyword match'):
    if question:
        try:
            url = f"{ES_URL}/document/_search?pretty"
            payload = json.dumps({"query":{"match":{"content": question}}}) # "moldova"
            headers = {'Content-Type': 'application/json'}
            response = requests.request("GET", url, headers=headers, data=payload) 
            kws_result = response.json() # print(response.text)
            
        except Exception as e:
            qa_result = str(e)

        top_5_hits = kws_result['hits']['hits'][:5] # print("First 5 results:")
        top_5_text = [{'text': hit['_source']['content'][:500],
                       'confidence': hit['_score']} for hit in top_5_hits ]

        for i, doc_hit in enumerate(top_5_text):
            st.subheader(f'Search result #{i+1} (and score):')
            st.write(f'<em>{doc_hit["text"]}...</em>', unsafe_allow_html = True)
            st.markdown(f'> (*confidence score*: **{format(doc_hit["confidence"], ".3f")}**)')
            
        st.write(f'Answer JSON: '); st.write(top_5_text) # st.write(qa_result)
    else:
        st.write('Write a query to submit your keyword search'); st.stop()

if st.button('Run keyword search'):
    if question:
        try:
            url = f"{ES_URL}/document/_search?pretty"
            payload = json.dumps({"query": {
                "more_like_this": { "like": question, # "What is the capital city of Netherlands?"
                "fields": ["content"], "min_term_freq": 1.9, "min_doc_freq": 4, "max_query_terms": 50
            }}})
            headers = {'Content-Type': 'application/json'}
            response = requests.request("GET", url, headers=headers, data=payload) 
            kws_result = response.json() # print(response.text)
            
        except Exception as e:
            qa_result = str(e)

        top_5_hits = kws_result['hits']['hits'][:5] # print("First 5 results:")
        top_5_text = [{'text': hit['_source']['content'][:500],
                       'confidence': hit['_score']} for hit in top_5_hits ]

        for i, doc_hit in enumerate(top_5_text):
            st.subheader(f'Search result #{i+1} (and score):')
            st.write(f'<em>{doc_hit["text"]}...</em>', unsafe_allow_html = True)
            st.markdown(f'> (*confidence score*: **{format(doc_hit["confidence"], ".3f")}**)')
            
        st.write(f'Answer JSON: '); st.write(top_5_text) # st.write(qa_result)
    else:
        st.write('Write a query to submit your keyword search'); st.stop()