auth checkpoint

auth dependecies not instaled in dev container

backend/src/modules/auth/roles.guard.ts

@@ -0,0 +1,31 @@
+import { Injectable, CanActivate, ExecutionContext } from '@nestjs/common';
+import { Reflector } from '@nestjs/core';
+import { UserRole } from '../entities';
+
+@Injectable()
+export class RolesGuard implements CanActivate {
+  constructor(private reflector: Reflector) {}
+
+  canActivate(context: ExecutionContext): boolean {
+    const requiredRoles = this.reflector.getAllAndOverride<UserRole[]>(
+      'roles',
+      [context.getHandler(), context.getClass()],
+    );
+
+    if (!requiredRoles) {
+      return true;
+    }
+
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+    const request = context.switchToHttp().getRequest();
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+    const user = request.user as
+      | { id: string; username: string; email: string; role: UserRole }
+      | undefined;
+    if (!user) {
+      return false;
+    }
+
+    return requiredRoles.includes(user.role);
+  }
+}