src/streamlit_app.py

import streamlit as st
import pandas as pd
import requests

# Set the title and header of the app
st.set_page_config(page_title="ExtraaLearn Lead Conversion Predictor", layout="wide")
st.title("🚀 ExtraaLearn Lead Conversion Predictor")
st.markdown("### Predict whether a lead will convert to a paid customer.")

# --- API Configuration ---
API_URL = "https://Pratik26Dec-ExtraaLearn.hf.space/predict" 

# --- User Input Form ---
st.header("Lead Information")
with st.form("lead_form"):
    
    col1, col2, col3 = st.columns(3)
    
    with col1:
        age = st.slider("Age", 18, 65, 30)
        current_occupation = st.radio("Current Occupation", ['Professional', 'Unemployed', 'Student'])
        first_interaction = st.radio("First Interaction", ['Website', 'Mobile App'])
    
    with col2:
        profile_completed = st.selectbox("Profile Completed", ['Low', 'Medium', 'High'])
        website_visits = st.slider("Website Visits", 0, 30, 3)
        time_spent_on_website = st.slider("Time Spent on Website (seconds)", 0, 2600, 500)
    
    with col3:
        page_views_per_visit = st.number_input("Pages Viewed per Visit", 0.0, 20.0, 3.0)
        last_activity = st.selectbox("Last Activity", ['Email Activity', 'Phone Activity', 'Website Activity'])
        
        st.markdown("<br>", unsafe_allow_html=True)
        st.write("---")
        st.subheader("Source of Information")
        print_media_type1 = st.checkbox("Seen on Newspaper Ad?")
        print_media_type2 = st.checkbox("Seen on Magazine Ad?")
        digital_media = st.checkbox("Seen on Digital Ad?")
        educational_channels = st.checkbox("Heard on Educational Channels?")
        referral = st.checkbox("Referred by someone?")

    # Submit button for the form
    submit_button = st.form_submit_button(label='Predict Lead Conversion')

# --- Prediction Logic ---
if submit_button:
    # Prepare data to be sent to the API
    input_data = {
        "age": age,
        "current_occupation": current_occupation,
        "first_interaction": first_interaction,
        "profile_completed": profile_completed,
        "website_visits": website_visits,
        "time_spent_on_website": time_spent_on_website,
        "page_views_per_visit": page_views_per_visit,
        "last_activity": last_activity,
        "print_media_type1": "Yes" if print_media_type1 else "No",
        "print_media_type2": "Yes" if print_media_type2 else "No",
        "digital_media": "Yes" if digital_media else "No",
        "educational_channels": "Yes" if educational_channels else "No",
        "referral": "Yes" if referral else "No"
    }
    
    with st.spinner("Analyzing lead data..."):
        try:
            response = requests.post(API_URL, json=input_data)
            if response.status_code == 200:
                prediction = response.json()
                st.success("✅ Prediction Successful!")
                
                # Display the prediction result
                st.write(f"The model predicts this lead is **{prediction['prediction_label']}**.")
                st.progress(int(prediction['probabilities']['Converted'] * 100), text="Conversion Probability")
                st.info(f"Probability of Conversion: **{prediction['probabilities']['Converted']:.2f}**")
            else:
                st.error(f"❌ API call failed with status code: {response.status_code}")
                st.json(response.json())
        except requests.exceptions.RequestException as e:
            st.error(f"❌ An error occurred while connecting to the API: {e}")