add file upload for issue

src/api/file.api.ts

@@ -0,0 +1,51 @@
+import { apiClient } from '@/lib/api-client.ts'
+
+export interface StoredFile {
+  id: string
+  fileName: string
+  mimeType: string
+  size: number
+  /** null — the uploader deleted their account */
+  uploaderId: string | null
+  createdAt: string
+}
+
+export interface IssueAttachment {
+  issueId: number
+  file: StoredFile
+  /** When the file was attached to the issue (may differ from file.createdAt) */
+  attachedAt: string
+}
+
+/** The server serves only these types inline, everything else as a download */
+const INLINE_IMAGE_TYPES = ['image/png', 'image/jpeg', 'image/gif', 'image/webp']
+
+export function isPreviewable(file: StoredFile) {
+  return INLINE_IMAGE_TYPES.includes(file.mimeType)
+}
+
+export function downloadUrl(fileId: string) {
+  return `/api/files/${fileId}/download`
+}
+
+// CLIENT REQUEST
+
+/** Uploads a file without an owner; it must be attached afterwards or GC removes it */
+export async function fileUpload(file: File) {
+  const form = new FormData()
+  form.append('file', file)
+  return apiClient.upload<StoredFile>('/api/files', form)
+}
+
+export async function attachmentsList(issueId: number) {
+  return apiClient.get<IssueAttachment[]>(`/api/issues/${issueId}/attachments`)
+}
+
+export async function attachmentCreate(issueId: number, fileId: string) {
+  return apiClient.post<IssueAttachment>(`/api/issues/${issueId}/attachments`, { fileId })
+}
+
+export async function attachmentDelete(issueId: number, fileId: string) {
+  await apiClient.delete(`/api/issues/${issueId}/attachments/${fileId}`)
+  return true
+}