From bc1d40e94576cd98ea1369c37f881afcc47d7d7c Mon Sep 17 00:00:00 2001
From: Jaco <jacogr@gmail.com>
Date: Tue, 19 Dec 2023 14:28:48 +0200
Subject: [PATCH] Disable claims (non-working) (#10116)

* Disable claims (non-working)

* Disable on no buffer
---
 packages/apps-routing/src/claims.ts | 26 +++++++++++++++++++++++++-
 packages/apps/src/index.tsx         |  1 +
 packages/apps/src/initBufferHack.ts | 13 +++++++++++++
 3 files changed, 39 insertions(+), 1 deletion(-)
 create mode 100644 packages/apps/src/initBufferHack.ts

diff --git a/packages/apps-routing/src/claims.ts b/packages/apps-routing/src/claims.ts
index 51166cce66..fd4d03f2ae 100644
--- a/packages/apps-routing/src/claims.ts
+++ b/packages/apps-routing/src/claims.ts
@@ -4,6 +4,29 @@
 import type { Route, TFunction } from './types.js';
 
 import Component, { useCounter } from '@polkadot/app-claims';
+import { hasBuffer, u8aToBuffer } from '@polkadot/util';
+
+// See https://github.com/polkadot-js/apps/issues/10115 - this may not work,
+// if not we will have to disable it all (no way of testing)
+function needsApiCheck (): boolean {
+  try {
+    if (!Buffer.from([1, 2, 3])?.length) {
+      console.error('ERROR: Unable to construct Buffer object for claims module');
+
+      return false;
+    } else if (!hasBuffer || !Buffer.isBuffer(u8aToBuffer(new Uint8Array([1, 2, 3])))) {
+      console.error('ERROR: Unable to use u8aToBuffer for claims module');
+
+      return false;
+    }
+  } catch {
+    console.error('ERROR: Fatal error in working with Buffer module');
+
+    return false;
+  }
+
+  return true;
+}
 
 export default function create (t: TFunction): Route {
   return {
@@ -12,7 +35,8 @@ export default function create (t: TFunction): Route {
       needsAccounts: true,
       needsApi: [
         'tx.claims.mintClaim'
-      ]
+      ],
+      needsApiCheck
     },
     group: 'accounts',
     icon: 'star',
diff --git a/packages/apps/src/index.tsx b/packages/apps/src/index.tsx
index c19e68660a..0003e68099 100644
--- a/packages/apps/src/index.tsx
+++ b/packages/apps/src/index.tsx
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 // setup these right at front
+import './initBufferHack.js';
 import './initSettings.js';
 import 'semantic-ui-css/semantic.min.css';
 import '@polkadot/react-components/i18n';
diff --git a/packages/apps/src/initBufferHack.ts b/packages/apps/src/initBufferHack.ts
new file mode 100644
index 0000000000..9eceef029e
--- /dev/null
+++ b/packages/apps/src/initBufferHack.ts
@@ -0,0 +1,13 @@
+// Copyright 2017-2023 @polkadot/apps authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { xglobal } from '@polkadot/x-global';
+
+try {
+  // HACK: Construct a Buffer to ensure that it is actually available in our context
+  if (Buffer.from([1, 2, 3]).length === 3) {
+    xglobal.Buffer = Buffer;
+  }
+} catch {
+  // ignore
+}