// =============================================================================
// Obligations Document — Internal Helpers
// =============================================================================

export function escHtml(str: string): string {
  return str
    .replace(/&/g, '&')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/"/g, '&quot;')
}

export function formatDateDE(dateStr: string | null | undefined): string {
  if (!dateStr) return '—'
  try {
    const date = new Date(dateStr)
    if (isNaN(date.getTime())) return '—'
    return date.toLocaleDateString('de-DE', {
      day: '2-digit',
      month: '2-digit',
      year: 'numeric',
    })
  } catch {
    return '—'
  }
}

export function daysBetween(earlier: Date, later: Date): number {
  const diffMs = later.getTime() - earlier.getTime()
  return Math.floor(diffMs / (1000 * 60 * 60 * 24))
}