// Byte formatting for storage figures. Binary units (GiB/TiB) to match what
// OCIS reports. Auto-imported by Nuxt (utils/ is scanned by default).

const UNITS = ['B', 'KB', 'MB', 'GB', 'TB', 'PB']

// Human-readable size, e.g. 1610612736 → "1.5 GB". Picks the largest unit that
// keeps the number readable; trims trailing ".0".
export function formatBytes(bytes: number, decimals = 1): string {
  if (!bytes || bytes < 0) return '0 GB'
  const i = Math.min(UNITS.length - 1, Math.floor(Math.log(bytes) / Math.log(1024)))
  const value = bytes / 1024 ** i
  const fixed = value.toFixed(decimals)
  return `${fixed.endsWith('.0') ? fixed.slice(0, -2) : fixed} ${UNITS[i]}`
}

// Integer percentage of used vs total, clamped to 0–100. Returns 0 when total
// is 0 (unlimited) to avoid NaN in width styles.
export function percent(used: number, total: number): number {
  if (!total || total <= 0) return 0
  return Math.min(100, Math.max(0, Math.round((used / total) * 100)))
}