import streamlit as st
import sys
import os
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '../../backend')))
from dbscan_strategy import perform_dbscan_clustering

st.header("Clustering: DBSCAN")

if "data" in st.session_state:
    data = st.session_state.data

    with st.form("dbscan_form"):
        data_name = st.multiselect("Data Name", data.select_dtypes(include="number").columns, max_selections=3)
        eps = st.slider("eps", min_value=0.0, max_value=1.0, value=0.5, step=0.01)
        min_samples = st.number_input("min_samples", step=1, min_value=1, value=5)
        submitted = st.form_submit_button("Launch")

    if submitted and 2 <= len(data_name) <= 3:
        fig = perform_dbscan_clustering(data, data_name, eps, min_samples)
        st.pyplot(fig)
else:
    st.error("File not loaded")