Refactor for Filebase

Replace the use of the old IPFS Gateway with using Filebase.

Author: y86993

src/utils/ipfs-publish.ts

@@ -1,31 +1,25 @@
-import fetch from 'node-fetch'
+import { File, FilebaseClient } from '@filebase/client';
+
+const filebase = new FilebaseClient({ 
+  token: process.env.FILEBASE_TOKEN ?? "", 
+  bucket: process.env.FILEBASE_BUCKET ?? "" 
+});
 
 /**
- * Send file to IPFS network via the Kleros IPFS node
+ * Send file to IPFS network via Filebase
  * @param {string} fileName - The name that will be used to store the file. This is useful to preserve extension type.
  * @param {ArrayBuffer} data - The raw data from the file to upload.
  * @returns {object} ipfs response. Should include the hash and path of the stored item.
  */
 async function ipfsPublish(
   fileName: string,
   data: ArrayBuffer | Buffer,
-): Promise<Record<string, string>[]> {
-  data = await Buffer.from(data)
+): Promise<{ hash: string; path: string }[]> {  // Return an array of objects with a hash property
+  const buffer = Buffer.from(data);
 
-  return (
-    await (
-      await fetch(`${process.env.IPFS_GATEWAY}/add`, {
-        method: 'POST',
-        body: JSON.stringify({
-          fileName,
-          buffer: data,
-        }),
-        headers: {
-          'content-type': 'application/json',
-        },
-      })
-    ).json()
-  ).data
+  const cid = await filebase.storeDirectory([new File([buffer], fileName)]);
+  
+  return [{ hash: cid, path: `${cid}/${fileName}` }];  // Return an array
 }
 
 export default ipfsPublish