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import { isPlatformBrowser } from '@angular/common';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { BehaviorSubject, Observable, throwError } from 'rxjs';
import { catchError, tap } from 'rxjs/operators';
import { Router } from '@angular/router';
import { environment } from '../../../environments/environment';
export interface User {
id: number;
username: string;
email: string;
role: string;
blocked?: boolean;
confirmed?: boolean;
}
export interface AuthResponse {
jwt: string;
user: User;
}
export interface LoginCredentials {
identifier: string; // email or username
password: string;
}
export interface SignupData {
username: string;
email: string;
password: string;
role?: string;
}
@Injectable({
providedIn: 'root'
})
export class AuthService {
private apiUrl = 'http://localhost:1337/api'; // Auth API endpoint
private currentUserSubject: BehaviorSubject<User | null>;
public currentUser: Observable<User | null>;
private tokenKey = 'auth_token';
private userKey = 'auth_user';
private isBrowser: boolean;
constructor(
private http: HttpClient,
private router: Router,
@Inject(PLATFORM_ID) platformId: Object
) {
this.isBrowser = isPlatformBrowser(platformId);
// Initialize user from localStorage only in browser
let storedUser = null;
if (this.isBrowser) {
const userJson = localStorage.getItem(this.userKey);
storedUser = userJson ? JSON.parse(userJson) : null;
}
this.currentUserSubject = new BehaviorSubject<User | null>(storedUser);
this.currentUser = this.currentUserSubject.asObservable();
}
/**
* Get current user value
*/
public get currentUserValue(): User | null {
return this.currentUserSubject.value;
}
/**
* Check if user is authenticated
*/
public get isAuthenticated(): boolean {
return !!this.getToken() && !!this.currentUserValue;
}
/**
* Get stored token
*/
public getToken(): string | null {
if (!this.isBrowser) return null;
return localStorage.getItem(this.tokenKey);
}
/**
* Login user
*/
login(credentials: LoginCredentials): Observable<AuthResponse> {
return this.http.post<AuthResponse>(`${this.apiUrl}/auth/local`, credentials)
.pipe(
tap(response => {
this.setSession(response);
}),
catchError(error => {
console.error('Login error:', error);
return throwError(() => new Error(error.error?.error?.message || 'Login failed'));
})
);
}
/**
* Register new user
*/
signup(data: SignupData): Observable<AuthResponse> {
return this.http.post<AuthResponse>(`${this.apiUrl}/auth/local/register`, data)
.pipe(
tap(response => {
this.setSession(response);
}),
catchError(error => {
console.error('Signup error:', error);
return throwError(() => new Error(error.error?.error?.message || 'Registration failed'));
})
);
}
/**
* Logout user
*/
logout(): void {
if (this.isBrowser) {
localStorage.removeItem(this.tokenKey);
localStorage.removeItem(this.userKey);
}
this.currentUserSubject.next(null);
this.router.navigate(['/login']);
}
/**
* Get user profile from backend
*/
getProfile(): Observable<User> {
const token = this.getToken();
if (!token) {
return throwError(() => new Error('No authentication token found'));
}
const headers = new HttpHeaders({
'Authorization': `Bearer ${token}`
});
return this.http.get<User>(`${this.apiUrl}/users/me`, { headers })
.pipe(
tap(user => {
this.currentUserSubject.next(user);
if (this.isBrowser) {
localStorage.setItem(this.userKey, JSON.stringify(user));
}
}),
catchError(error => {
console.error('Get profile error:', error);
if (error.status === 401) {
this.logout();
}
return throwError(() => new Error('Failed to fetch user profile'));
})
);
}
/**
* Check if user has specific role
*/
hasRole(role: string): boolean {
const user = this.currentUserValue;
return user?.role === role;
}
/**
* Check if user is admin
*/
isAdmin(): boolean {
return this.hasRole('admin') || this.hasRole('administrator');
}
/**
* Forgot password - send reset email
*/
forgotPassword(email: string): Observable<any> {
return this.http.post(`${this.apiUrl}/auth/forgot-password`, { email })
.pipe(
catchError(error => {
console.error('Forgot password error:', error);
return throwError(() => new Error('Failed to send reset email'));
})
);
}
/**
* Reset password with code
*/
resetPassword(code: string, password: string, passwordConfirmation: string): Observable<any> {
return this.http.post(`${this.apiUrl}/auth/reset-password`, {
code,
password,
passwordConfirmation
}).pipe(
catchError(error => {
console.error('Reset password error:', error);
return throwError(() => new Error('Failed to reset password'));
})
);
}
/**
* Set authentication session
*/
private setSession(authResult: AuthResponse): void {
if (this.isBrowser) {
localStorage.setItem(this.tokenKey, authResult.jwt);
localStorage.setItem(this.userKey, JSON.stringify(authResult.user));
}
this.currentUserSubject.next(authResult.user);
}
/**
* Refresh user data
*/
refreshUser(): void {
if (this.isAuthenticated) {
this.getProfile().subscribe();
}
}
}
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