refactor of data-service

libs/http/src/client.ts

@@ -2,6 +2,7 @@ import type { Logger } from '@stock-bot/logger';
 import { AdapterFactory } from './adapters/index';
 import type { HttpClientConfig, HttpResponse, RequestConfig } from './types';
 import { HttpError } from './types';
+import { getRandomUserAgent } from './user-agent';
 
 export class HttpClient {
   private readonly config: HttpClientConfig;
@@ -165,9 +166,17 @@ export class HttpClient {
    * Merge configs with defaults
    */
   private mergeConfig(config: RequestConfig): RequestConfig {
+    // Merge headers with automatic User-Agent assignment
+    const mergedHeaders = { ...this.config.headers, ...config.headers };
+
+    // Add random User-Agent if not specified
+    if (!mergedHeaders['User-Agent'] && !mergedHeaders['user-agent']) {
+      mergedHeaders['User-Agent'] = getRandomUserAgent();
+    }
+
     return {
       ...config,
-      headers: { ...this.config.headers, ...config.headers },
+      headers: mergedHeaders,
       timeout: config.timeout ?? this.config.timeout,
     };
   }