import streamlit as st

def calculate_and_display(hearts, comments, followers, average_cpm):
    engagement_rate = ((hearts + comments) / followers) * 100
    earnings = (engagement_rate / 100) * average_cpm

    st.markdown(f"**Engagement rate:** {engagement_rate:.2f}%")
    st.markdown(f"**Estimated earnings:** ${earnings:.2f}")

def main():
    st.title("TikTok Earnings Calculator")

    hearts = st.number_input("Enter the number of hearts:", min_value=0, step=1)
    comments = st.number_input("Enter the number of comments:", min_value=0, step=1)
    followers = st.number_input("Enter the number of followers:", min_value=0, step=1)
    average_cpm = st.number_input("Enter the average CPM (earnings per thousand views):", min_value=0.0)

    if st.button("Calculate"):
        calculate_and_display(hearts, comments, followers, average_cpm)

if __name__ == "__main__":
    main()