added role.guard.ts.ts again

Signed-off-by: supphakitd <67319010028@technictrang.ac.th>

ng-ttc-frontend/src/app/services/role.guard.ts.ts

@@ -0,0 +1,27 @@
+import { Injectable } from '@angular/core';
+import { ActivatedRouteSnapshot, RouterStateSnapshot, Router } from '@angular/router';
+
+
+@Injectable({
+  providedIn: 'root',
+})
+export class RoleGuard {
+  constructor(private router: Router) { }
+
+  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
+    const denyRole = route.data?.['denyRole'];
+    const usrrol = localStorage.getItem('usrrol');
+
+    if (denyRole && usrrol === denyRole) {
+      // blocked: navigate away (adjust target as needed)
+      this.router.navigate(['/']);
+      return false;
+    }
+
+    return true;
+  }
+
+  canActivateChild(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
+    return this.canActivate(route, state);
+  }
+}