"""Token Launch scenario tab."""

import streamlit as st

from src.composed.simulator import scenario_token_launch
from dashboard.charts import fig_simulation_overview


def render():
    st.header("Token Launch Simulation")

    config = st.session_state.get("myco_config")
    n_assets = config.n_reserve_assets if config else 3

    col1, col2, col3 = st.columns(3)
    with col1:
        n_depositors = st.slider("Depositors", 10, 200, 50)
    with col2:
        total_raise = st.number_input("Total raise ($)", 10_000, 1_000_000, 100_000, step=10_000)
    with col3:
        duration = st.slider("Duration (days)", 30, 365, 90)

    st.caption(f"Using **{n_assets}** reserve assets from System Config.")

    if st.button("Run Simulation", key="token_launch_run"):
        with st.spinner("Running token launch simulation..."):
            result = scenario_token_launch(
                n_assets=n_assets,
                total_raise=float(total_raise),
                n_depositors=n_depositors,
                duration=float(duration),
            )
            st.session_state["token_launch_result"] = result

    if "token_launch_result" in st.session_state:
        result = st.session_state["token_launch_result"]

        # Metric cards
        m1, m2, m3, m4 = st.columns(4)
        m1.metric("Final Supply", f"{result.supply[-1]:,.0f}")
        m2.metric("Final Reserve", f"${result.reserve_value[-1]:,.0f}")
        m3.metric("Backing Ratio", f"{result.backing_ratio[-1]:.4f}")
        m4.metric("Total Minted", f"{result.financial_minted[-1] + result.commitment_minted[-1]:,.0f}")

        st.plotly_chart(fig_simulation_overview(result), use_container_width=True)