release: v1.1.0 — S3 multi-backend storage and admin UI

app/composables/useFileSize.ts

@@ -1,10 +1,55 @@
-export function useFileSize() {
-  function formatFileSize(bytes: number): string {
-    if (!Number.isFinite(bytes) || bytes < 0) return '-'
-    if (bytes < 1024) return `${bytes} B`
-    if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`
-    return `${(bytes / (1024 * 1024)).toFixed(2)} MB`
+export const QUOTA_UNITS = ['KB', 'MB', 'GB', 'TB'] as const
+export type QuotaUnit = typeof QUOTA_UNITS[number]
+
+export function formatFileSize(bytes: number): string {
+  if (!Number.isFinite(bytes) || bytes < 0) return '-'
+  if (bytes === 0) return '0 B'
+  if (bytes < 1024) return `${bytes} B`
+
+  const units = ['KB', 'MB', 'GB', 'TB'] as const
+  let value = bytes / 1024
+  let unitIndex = 0
+
+  while (unitIndex < units.length - 1 && value >= 1024) {
+    value /= 1024
+    unitIndex++
   }
 
-  return { formatFileSize }
+  const decimals = value >= 100 ? 0 : value >= 10 ? 1 : 2
+  return `${value.toFixed(decimals)} ${units[unitIndex]}`
+}
+
+export function bytesToQuotaInput(bytes: number | null): { value: string, unit: QuotaUnit } {
+  if (!bytes || bytes <= 0) {
+    return { value: '', unit: 'GB' }
+  }
+
+  let value = bytes / 1024
+  let unitIndex = 0
+
+  while (unitIndex < QUOTA_UNITS.length - 1 && value >= 1024) {
+    value /= 1024
+    unitIndex++
+  }
+
+  const decimals = value >= 100 ? 0 : value >= 10 ? 1 : 2
+  const rounded = Number(value.toFixed(decimals))
+  const unit: QuotaUnit = QUOTA_UNITS[unitIndex] ?? 'GB'
+  return { value: String(rounded), unit }
+}
+
+export function quotaToBytes(value: string | number, unit: QuotaUnit): number | null {
+  const trimmed = String(value ?? '').trim()
+  if (!trimmed) return null
+  const amount = Number(trimmed)
+  if (!Number.isFinite(amount) || amount <= 0) return null
+
+  const unitIndex = QUOTA_UNITS.indexOf(unit)
+  if (unitIndex < 0) return null
+
+  return Math.round(amount * 1024 ** (unitIndex + 1))
+}
+
+export function useFileSize() {
+  return { formatFileSize, bytesToQuotaInput, quotaToBytes, QUOTA_UNITS }
 }