def minutes_to_str(minutes: int) -> str:
    sign = "-" if minutes < 0 else ""
    minutes = abs(minutes)
    return f"{sign}{minutes // 60}h{minutes % 60:02d}"


_REFERENCE_MINUTES = {
    "WORK": 465,
    "TT": 465,
    "FORMATION": 465,
    "GARDE": 600,
    "ASTREINTE": 0,
    "RTT": 0,
    "CONGE": 0,
    "MALADE": 0,
    "FERIE": 0,
}


def work_minutes_reference(day_type: str) -> int:
    return _REFERENCE_MINUTES.get(day_type, 465)


def week_balance_minutes(actual_minutes: int, reference_minutes: int) -> int:
    return actual_minutes - reference_minutes


def count_day_types(entries: list) -> dict[str, int]:
    """Retourne un dict {day_type: count} pour une liste d'entrées, sans les zéros."""
    counts: dict[str, int] = {}
    for entry in entries:
        counts[entry.day_type] = counts.get(entry.day_type, 0) + 1
    return counts