"""Gemeinsame Formatierungshelfer für die GUI (Dauer- und Zeitstempelanzeige)."""

from __future__ import annotations

from datetime import datetime


def format_duration(seconds: float) -> str:
    total_seconds = max(0, int(seconds))
    hours, remainder = divmod(total_seconds, 3600)
    minutes, secs = divmod(remainder, 60)
    if hours:
        return f"{hours:02d}:{minutes:02d}:{secs:02d}"
    return f"{minutes:02d}:{secs:02d}"


def format_timestamp(iso_timestamp: str) -> str:
    try:
        return datetime.fromisoformat(iso_timestamp).strftime("%d.%m.%Y %H:%M:%S")
    except ValueError:
        return iso_timestamp