Moves parts of conversation view into redux

ts/util/isMemberRequestingToJoin.ts

@@ -0,0 +1,25 @@
+// Copyright 2022 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { UUID } from '../types/UUID';
+import type { ConversationAttributesType } from '../model-types.d';
+import { isGroupV2 } from './whatTypeOfConversation';
+
+export function isMemberRequestingToJoin(
+  conversationAttrs: Pick<
+    ConversationAttributesType,
+    'groupId' | 'groupVersion' | 'pendingAdminApprovalV2'
+  >,
+  uuid: UUID
+): boolean {
+  if (!isGroupV2(conversationAttrs)) {
+    return false;
+  }
+  const { pendingAdminApprovalV2 } = conversationAttrs;
+
+  if (!pendingAdminApprovalV2 || !pendingAdminApprovalV2.length) {
+    return false;
+  }
+
+  return pendingAdminApprovalV2.some(item => item.uuid === uuid.toString());
+}