"""Logs tab: tail any run log."""

from __future__ import annotations

import streamlit as st

from web.views.common import S


def render() -> None:
    log_files = sorted(S.log_dir.glob("*.log"), reverse=True) if S.log_dir.exists() else []
    if not log_files:
        st.info("No logs yet.")
        return
    choice = st.selectbox("Log file", [f.name for f in log_files])
    n = st.slider("Lines", 20, 1000, 200, 20)
    text = (S.log_dir / choice).read_text().splitlines()[-n:]
    st.code("\n".join(text), language="text")