"""CLI utilities for formatting and display."""

from datetime import datetime
from typing import Optional


def format_timestamp(ts: Optional[datetime]) -> str:
    """Format a datetime for display."""
    if ts is None:
        return "unknown"
    return ts.strftime("%Y-%m-%d %H:%M:%S")


def format_duration_hours(hours: float) -> str:
    """Format duration in hours to human readable format."""
    if hours < 1:
        return f"{int(hours * 60)}m"
    elif hours < 24:
        return f"{int(hours)}h"
    else:
        return f"{int(hours / 24)}d"