Initial Commit

shared/utils/attachments.ts

@@ -0,0 +1,40 @@
+export interface AttachmentAudioMeta {
+  title: string | null
+  artist: string | null
+  album: string | null
+  voice?: boolean
+}
+
+export interface CommentAttachment {
+  id: number
+  name: string
+  url: string
+  mimeType: string | null
+  size: number | null
+  cover?: string | null
+  meta?: AttachmentAudioMeta | null
+}
+
+export const MAX_COMMENT_ATTACHMENTS = 8
+export const MAX_ATTACHMENT_SIZE = 200 * 1024 * 1024 // 200 MB
+
+export function isImageAttachment(a: { mimeType?: string | null, name?: string }): boolean {
+  return !!a.mimeType?.startsWith('image/')
+    || (!!a.name && /\.(avif|bmp|gif|jpe?g|png|svg|webp)$/i.test(a.name))
+}
+
+export function isAudioAttachment(a: { mimeType?: string | null, name?: string }): boolean {
+  return !!a.mimeType?.startsWith('audio/')
+    || (!!a.name && /\.(mp3|flac|ogg|wav|m4a|aac|opus)$/i.test(a.name))
+}
+
+export function isVoiceAttachment(a: { meta?: { voice?: boolean } | null }): boolean {
+  return a.meta?.voice === true
+}
+
+export function formatFileSize(bytes: number | null | undefined): string {
+  if (!bytes || bytes <= 0) return ''
+  return bytes >= 1024 * 1024
+    ? `${(bytes / 1024 / 1024).toFixed(1)} MB`
+    : `${Math.max(1, Math.round(bytes / 1024))} KB`
+}