fix: improve IP address and user-agent handling

- Updated get-ip decorator to return 'Unknown' if the IP address cannot be determined.
- Simplified user-agent decorator to return the user-agent header directly without redundancy.
- Adjusted webhook event serialization to correctly reference event data.

Author: kastov

src/common/decorators/get-ip/get-ip.ts

@@ -9,5 +9,6 @@ export const IpAddress = createParamDecorator((data, ctx: ExecutionContext) => {
         return request.clientIp;
     }
 
-    return requestIp.getClientIp(request);
+    const ip = requestIp.getClientIp(request);
+    return ip || 'Unknown';
 });

src/common/decorators/get-useragent/get-useragent.ts

@@ -4,7 +4,7 @@ export const UserAgent = createParamDecorator((data, ctx: ExecutionContext) => {
     const request = ctx.switchToHttp().getRequest();
 
     if (request.headers['user-agent']) {
-        return request.headers['user-agent'] || 'Unknown';
+        return request.headers['user-agent'];
     }
 
     return 'Unknown';

src/integration-modules/webhook-module/events/webhook.events.ts

@@ -64,7 +64,7 @@ export class WebhookEvents {
             const payload = {
                 event: event.eventName,
                 timestamp: dayjs().toISOString(),
-                data: instanceToPlain(event),
+                data: instanceToPlain(event.data),
             };
 
             const { json } = serialize(payload);

src/modules/remnawave-service/remnawave-service.service.ts

@@ -1,4 +1,4 @@
-import { Injectable, Logger, OnApplicationBootstrap } from '@nestjs/common';
+import { Injectable, OnApplicationBootstrap } from '@nestjs/common';
 import { EventEmitter2 } from '@nestjs/event-emitter';
 
 import { EVENTS } from '@libs/contracts/constants';
@@ -7,7 +7,6 @@ import { ServiceEvent } from '@integration-modules/telegram-bot/events/service/i
 
 @Injectable()
 export class RemnawaveServiceService implements OnApplicationBootstrap {
-    private readonly logger = new Logger(RemnawaveServiceService.name);
     constructor(private readonly eventEmitter: EventEmitter2) {}
 
     public async onApplicationBootstrap(): Promise<void> {