"""Market bar — displays major indices at the top of the app."""
import streamlit as st
from services.data_service import get_market_indices
def _delta_class(change_pct: float | None) -> str:
if change_pct is None:
return "neutral"
return "positive" if change_pct >= 0 else "negative"
def _delta_text(change_pct: float | None) -> str:
if change_pct is None:
return "—"
arrow = "▲" if change_pct >= 0 else "▼"
return f"{arrow} {change_pct * 100:+.2f}%"
def render_market_bar():
indices = get_market_indices()
st.markdown(
"""
""",
unsafe_allow_html=True,
)
cols = st.columns(len(indices))
for col, (name, data) in zip(cols, indices.items()):
price = data.get("price")
change_pct = data.get("change_pct")
value = f"{price:,.2f}" if price is not None else "—"
delta_class = _delta_class(change_pct)
delta_text = _delta_text(change_pct)
col.markdown(
f"""
{name}
{value}
{delta_text}
""",
unsafe_allow_html=True,
)