# Importing required libraries
import pandas as pd
import numpy as np 
import streamlit as st
from sentence_transformers import SentenceTransformer, util

st.title("Semantic-Search-Using-Transformer")

# Importing the Data 
df = pd.read_csv('medium_articles.csv')

# Downloading the sentence transformer model

embedder = SentenceTransformer('all-MiniLM-L6-v2')

#Predictions
# User-Test function (prediction_script.py)
# load saved model

all_embeddings = np.load('mediumArticle_embeddings.npy')

# Function

def prediction(query,top_k,corpus_embeddings,df):
    query_embedding = embedder.encode(query, convert_to_tensor=True)
    hits = util.semantic_search(query_embedding, corpus_embeddings, top_k=top_k)
    hits = hits[0] # Get the hits for the first query

    print(f"\nTop {top_k} most similar sentences in corpus:")
    for hit in hits:
      hit_id = hit['corpus_id']
      article_data = df.iloc[hit_id]
      title = article_data["title"]
      st.write("-", title, "(Score: {:.4f})".format(hit['score']))

query = st.text_input('Enter your query here','Artificial Intelligence')
# query = input("Enter the Input Query:-  ")
# top_sent = int(input("Enter the number of similarity sentences you want: "))
top_k = st.number_input('How many results do you want to see?',min_value= 2)

if st.button("Click to Search"):
    prediction(query,top_k,all_embeddings,df)