feat(sdk): add arweave upload size limit

Author: PierreJeanjacquot

packages/sdk/src/config/config.ts

@@ -29,6 +29,7 @@ export const CHAIN_CONFIG: Record<ChainId, ChainConfig> = {
 export const DEFAULT_CHAIN_ID = 134;
 export const DEFAULT_ARWEAVE_UPLOAD_API = 'http://localhost:3000'; // TODO change this
 export const DEFAULT_ARWEAVE_GATEWAY = 'https://arweave.net';
+export const ARWEAVE_FREE_UPLOAD_MAX_SIZE = 100 * 1024; // 100kb
 export const DEFAULT_DATA_NAME = '';
 export const SCONE_TAG = ['tee', 'scone'];
 export const DEFAULT_MAX_PRICE = 0;

packages/sdk/src/services/arweave.ts

@@ -1,6 +1,7 @@
 import {
   DEFAULT_ARWEAVE_GATEWAY,
   DEFAULT_ARWEAVE_UPLOAD_API,
+  ARWEAVE_FREE_UPLOAD_MAX_SIZE,
 } from '../config/config.js';
 
 interface AddOptions {
@@ -12,8 +13,15 @@ const add = async (
   content: Uint8Array,
   { arweaveGateway, arweaveUploadApi }: AddOptions = {}
 ): Promise<string> => {
-  let arweaveId: string;
+  if (content.length >= ARWEAVE_FREE_UPLOAD_MAX_SIZE) {
+    throw Error(
+      `Arweave upload ${(ARWEAVE_FREE_UPLOAD_MAX_SIZE / 1024).toFixed(
+        0
+      )}kb size limit reached`
+    );
+  }
 
+  let arweaveId: string;
   try {
     const payload = new FormData();
     payload.append('file', new Blob([content]));

packages/sdk/tests/unit/services/arweave.test.ts

@@ -0,0 +1,14 @@
+import { describe, it } from '@jest/globals';
+import { ARWEAVE_FREE_UPLOAD_MAX_SIZE } from '../../../src/config/config.js';
+import * as arweave from '../../../src/services/arweave.js';
+
+describe('arweave.add()', () => {
+  describe('when content to upload is too large', () => {
+    it('throws an error', async () => {
+      const content = Buffer.alloc(ARWEAVE_FREE_UPLOAD_MAX_SIZE, 0);
+      await expect(arweave.add(content)).rejects.toThrow(
+        Error('Arweave upload 100kb size limit reached')
+      );
+    });
+  });
+});