Initial commit: mail-server with WebFlux backend and Angular v22 Synthwave frontend

Co-authored-by: Junie <junie@jetbrains.com>

frontend/src/app/services/auth.service.ts

@@ -0,0 +1,57 @@
+import { Injectable, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable, BehaviorSubject } from 'rxjs';
+import { tap, shareReplay } from 'rxjs/operators';
+import { LoginRequest, LoginResponse, RegisterRequest } from '../models/mail.models';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class AuthService {
+  private http = inject(HttpClient);
+  private apiUrl = 'http://localhost:8080/api';
+
+  private currentUserSubject = new BehaviorSubject<string | null>(
+    localStorage.getItem('email')
+  );
+  currentUser$ = this.currentUserSubject.asObservable();
+
+  private tokenSubject = new BehaviorSubject<string | null>(
+    localStorage.getItem('token')
+  );
+  token$ = this.tokenSubject.asObservable();
+
+  login({ email, password }: LoginRequest): Observable<LoginResponse> {
+    return this.http.post<LoginResponse>(`${this.apiUrl}/login`, { email, password }).pipe(
+      tap(({ token, email }) => {
+        localStorage.setItem('token', token);
+        localStorage.setItem('email', email);
+        this.tokenSubject.next(token);
+        this.currentUserSubject.next(email);
+      })
+    );
+  }
+
+  register({ email, password, displayName }: RegisterRequest): Observable<void> {
+    return this.http.post<void>(`${this.apiUrl}/register`, { email, password, displayName });
+  }
+
+  logout(): void {
+    localStorage.removeItem('token');
+    localStorage.removeItem('email');
+    this.tokenSubject.next(null);
+    this.currentUserSubject.next(null);
+  }
+
+  getToken(): string | null {
+    return localStorage.getItem('token');
+  }
+
+  isLoggedIn(): boolean {
+    return !!localStorage.getItem('token');
+  }
+
+  getEmail(): string | null {
+    return localStorage.getItem('email');
+  }
+}