Better License Error when pro License expired

src/app/providers/license-interceptor.service.ts

@@ -0,0 +1,55 @@
+import { Injectable } from '@angular/core';
+import {
+  HttpRequest,
+  HttpHandler,
+  HttpEvent,
+  HttpInterceptor,
+  HttpResponse
+} from '@angular/common/http';
+import { Observable, tap } from 'rxjs';
+import { LicenseService } from './license.service';
+
+@Injectable()
+export class LicenseInterceptor implements HttpInterceptor {
+
+  // Pro-licensed API endpoints that should be monitored
+  private readonly proEndpoints = [
+    'monitoring/devs/get',
+    'monitoring/events/get',
+    'monitoring/eventunfixed/get',
+    '/api/vpn/status',
+    'networkmap/get',
+    'snippet/sequence/list',
+    'cloner/list',
+    '/api/pssvault/get',
+    'snippet/syslogregex/list'
+  ];
+
+  constructor(private licenseService: LicenseService) {}
+
+  private isProEndpoint(url: string): boolean {
+    return this.proEndpoints.some(endpoint => url.includes(endpoint));
+  }
+
+  intercept(request: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
+    return next.handle(request).pipe(
+      tap((event: HttpEvent<any>) => {
+        if (event instanceof HttpResponse && this.isProEndpoint(request.url)) {
+          const body = event.body;
+          if (
+            body &&
+            body.result &&
+            typeof body.result === 'object' &&
+            body.result.err === 'License Expired' &&
+            body.result.status === 'failed'
+          ) {
+            this.licenseService.setExpired(true);
+          } else {
+            // Pro endpoint responded without license error — license is valid
+            this.licenseService.setExpired(false);
+          }
+        }
+      })
+    );
+  }
+}