"""Time utility functions."""

from datetime import datetime, timedelta


def format_duration(minutes: int) -> str:
    """Format duration in minutes to human-readable string.

    Args:
        minutes: Duration in minutes.

    Returns:
        Human-readable duration string (e.g., "1h 30m", "45m").
    """
    if minutes < 60:
        return f"{minutes}m"
    hours = minutes // 60
    remaining_minutes = minutes % 60
    if remaining_minutes == 0:
        return f"{hours}h"
    return f"{hours}h {remaining_minutes}m"


def parse_duration(duration_str: str) -> int:
    """Parse duration string to minutes.

    Args:
        duration_str: Duration string like "1h 30m", "45m", "2h".

    Returns:
        Duration in minutes.
    """
    total_minutes = 0
    duration_str = duration_str.lower().strip()

    # Parse hours
    if "h" in duration_str:
        parts = duration_str.split()
        for part in parts:
            if "h" in part:
                total_minutes += int(part.replace("h", "")) * 60
            elif "m" in part:
                total_minutes += int(part.replace("m", ""))

    # If no hours, try just minutes
    if total_minutes == 0 and "m" in duration_str:
        total_minutes = int(duration_str.replace("m", ""))
    elif total_minutes == 0:
        try:
            total_minutes = int(duration_str)
        except ValueError:
            return 0

    return total_minutes


def is_recent(dt: datetime, hours: int = 24) -> bool:
    """Check if a datetime is within the specified hours.

    Args:
        dt: Datetime to check.
        hours: Number of hours to consider as "recent".

    Returns:
        True if dt is within the specified hours.
    """
    return datetime.now() - dt < timedelta(hours=hours)


def format_datetime(dt: datetime) -> str:
    """Format datetime to standard string.

    Args:
        dt: Datetime to format.

    Returns:
        Formatted string in YYYY-MM-DD HH:MM format.
    """
    return dt.strftime("%Y-%m-%d %H:%M")


def format_date(dt: datetime) -> str:
    """Format datetime to date string.

    Args:
        dt: Datetime to format.

    Returns:
        Formatted string in YYYY-MM-DD format.
    """
    return dt.strftime("%Y-%m-%d")