knur-app/lib/format.ts

import { format } from "date-fns";
import { pl } from "date-fns/locale";

export function formatDate(date: Date | string): string {
  return format(new Date(date), "d MMMM yyyy, HH:mm", { locale: pl });
}

export function formatDateShort(date: Date | string): string {
  return format(new Date(date), "d MMM yyyy", { locale: pl });
}

export function formatDuration(seconds: number): string {
  const h = Math.floor(seconds / 3600);
  const m = Math.floor((seconds % 3600) / 60);
  const s = Math.floor(seconds % 60);
  if (h > 0) {
    return `${h}:${String(m).padStart(2, "0")}:${String(s).padStart(2, "0")}`;
  }
  return `${m}:${String(s).padStart(2, "0")}`;
}

export function formatDistance(meters: number): string {
  return `${(meters / 1000).toFixed(2)} km`;
}

export function formatPace(secPerKm: number): string {
  const m = Math.floor(secPerKm / 60);
  const s = Math.round(secPerKm % 60);
  return `${m}:${String(s).padStart(2, "0")} /km`;
}