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src/services/user.service.ts

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+import { Injectable, signal } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable } from 'rxjs';
+import { tap } from 'rxjs/operators';
+import type { AuthUser } from './auth.service';
+
+export interface UserPreferences {
+  language?: string | null;
+  defaultProvider?: string | null;
+  theme?: 'light' | 'dark' | 'black' | 'system' | string | null;
+  videoQuality?: string | null;
+  region?: string | null;
+  version?: number | null;
+}
+
+@Injectable({ providedIn: 'root' })
+export class UserService {
+  private _preferences = signal<UserPreferences | null>(null);
+
+  constructor(private http: HttpClient) {}
+
+  preferences() {
+    return this._preferences();
+  }
+
+  loadPreferences(): Observable<UserPreferences> {
+    return this.http.get<UserPreferences>('/proxy/api/user/preferences', { withCredentials: true }).pipe(
+      tap(p => this._preferences.set(p || {}))
+    );
+  }
+
+  updatePreferences(patch: Partial<UserPreferences>): Observable<UserPreferences> {
+    return this.http.patch<UserPreferences>('/proxy/api/user/preferences', patch, { withCredentials: true }).pipe(
+      tap(p => this._preferences.set(p || {}))
+    );
+  }
+
+  loadMe(): Observable<AuthUser> {
+    return this.http.get<AuthUser>('/proxy/api/user/me', { withCredentials: true });
+  }
+}