Move uploader.ts to utils, make it kind of like api.ts

src/utils/upload.ts

@@ -0,0 +1,44 @@
+import { AppContext } from '@/app.ts';
+import { Conf } from '@/config.ts';
+import { insertUnattachedMedia, UnattachedMedia } from '@/db/unattached-media.ts';
+import { HTTPException } from 'hono';
+interface FileMeta {
+  pubkey: string;
+  description?: string;
+}
+
+/** Upload a file, track it in the database, and return the resulting media object. */
+export async function uploadFile(
+  c: AppContext,
+  file: File,
+  meta: FileMeta,
+  signal?: AbortSignal,
+): Promise<UnattachedMedia> {
+  const uploader = c.get('uploader');
+  if (!uploader) {
+    throw new HTTPException(500, {
+      res: c.json({ error: 'No uploader configured.' }),
+    });
+  }
+
+  const { pubkey, description } = meta;
+
+  if (file.size > Conf.maxUploadSize) {
+    throw new Error('File size is too large.');
+  }
+
+  const tags = await uploader.upload(file, { signal });
+  const url = tags[0][1];
+
+  if (description) {
+    tags.push(['alt', description]);
+  }
+
+  return insertUnattachedMedia({
+    id: crypto.randomUUID(),
+    pubkey,
+    url,
+    data: tags,
+    uploaded_at: Date.now(),
+  });
+}