first commit v3 initialiazed a temporary repository for darmanet client

src/chat-attachments/attachment-session-expert.guard.ts

@@ -0,0 +1,27 @@
+import {
+  CanActivate,
+  ExecutionContext,
+  Injectable,
+  UnauthorizedException,
+} from '@nestjs/common';
+import { ChatService } from 'src/socket/support-management/chat.service';
+
+@Injectable()
+export class AttachmentSessionExpertGuard implements CanActivate {
+  constructor(private readonly chatService: ChatService) {}
+
+  async canActivate(context: ExecutionContext): Promise<boolean> {
+    const req = context.switchToHttp().getRequest();
+    const sessionId = req.params?.sessionId as string;
+    const admin = req.admin;
+    if (!admin?._id) {
+      throw new UnauthorizedException('expert_token_required');
+    }
+    await this.chatService.assertParticipantCanUploadVoice(
+      sessionId,
+      String(admin._id),
+      'Expert',
+    );
+    return true;
+  }
+}