File size: 6,834 Bytes
e4ab6d0 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 |
import { Injectable } from '@angular/core';
import { BehaviorSubject } from 'rxjs';
import { HttpClient, HttpHeaders, HttpResponse } from '@angular/common/http';
import { Observable } from 'rxjs/internal/Observable';
import { tap } from 'rxjs/operators';
import { catchError } from 'rxjs/operators';
import { throwError } from 'rxjs';
@Injectable({
providedIn: 'root'
})
export class AuthenticationService {
private apiUrl = 'http://127.0.0.1:5000'; // Your backend URL
private loggedInSubject = new BehaviorSubject<boolean>(this.isLoggedIn()); // BehaviorSubject to track login status
constructor(private http: HttpClient) {
// Change from 5 minutes to 30 seconds
setInterval(() => this.checkAndRefreshToken(), 30 * 1000); // Every 30 seconds
// Periodically check for token expiry and refresh it if necessary
//setInterval(() => this.checkAndRefreshToken(), 5 * 60 * 1000); // Check every 5 minutes
}
// ✅ Login Method
// ✅ Login Method (returns an Observable)
login(username: string, password: string): Observable<any> {
const loginData = { username, password };
return this.http.post(`${this.apiUrl}/login`, loginData).pipe(
tap((response: any) => {
//const now = new Date();
// Store tokens in localStorage
localStorage.setItem('access_token', response.access_token);
localStorage.setItem('refresh_token', response.refresh_token);
// Optionally store expiry time of the access token (2 minutes)
const accessTokenExpiry = Date.now() + 2 * 60 * 1000; // 2 minutes expiration for access token
localStorage.setItem('access_token_expiry', accessTokenExpiry.toString());
// Optionally store expiry time of the refresh token (5 minutes)
const refreshTokenExpiry = Date.now() + 10 * 60 * 1000; // 5 minutes expiration for refresh token
localStorage.setItem('refresh_token_expiry', refreshTokenExpiry.toString());
this.loggedInSubject.next(true);
}),
catchError(error => {
// Handle error (token expiry / invalid login)
if (error.status === 401 && error.error.message === 'Token has expired') {
//alert('Your session has expired, please log in again.');
}
return throwError(error);
})
);
}
logout(): Observable<any> {
const token = this.getToken();
console.log('🔑 Token at logout start:', token);
this.removeToken(); // Remove token first
this.loggedInSubject.next(false);
if (!token) {
console.warn('⚠️ No token found. Emitting success anyway.');
return new Observable(observer => {
observer.next(true);
observer.complete();
});
}
const headers = new HttpHeaders().set('Authorization', `Bearer ${token}`);
console.log('📤 Sending logout request with headers:', headers);
return this.http.post(`${this.apiUrl}/logout`, {}, { headers }).pipe(
tap(() => {
console.log('✅ Logout API request completed'); // This should now appear
}),
catchError((error) => {
console.error('❌ Logout error in service:', error);
return new Observable(observer => {
observer.next(true); // Continue flow even on error
observer.complete();
});
})
);
}
// ✅ Get Token (to use for making authorized requests)
getToken(): string | null {
return localStorage.getItem('access_token');
}
// ✅ Store Token
storeToken(token: string): void {
localStorage.setItem('access_token', token);
console.log('Token stored:', token); // Log the token to confirm it's saved
this.loggedInSubject.next(true); // Update login status
}
// ✅ Remove Token
removeToken(): void {
localStorage.removeItem('access_token');
localStorage.removeItem('refresh_token');
localStorage.removeItem('access_token_expiry');
this.loggedInSubject.next(false); // Update login status
}
// ✅ Check if the user is logged in
isLoggedIn(): boolean {
return !!this.getToken();
}
// ✅ Observable to track login status
get isLoggedIn$(): Observable<boolean> {
return this.loggedInSubject.asObservable();
}
checkAndRefreshToken() {
const accessTokenExpiry = localStorage.getItem('access_token_expiry');
if (accessTokenExpiry && Date.now() >= (+accessTokenExpiry - 5000)) {
// Refresh 5 seconds before expiry
this.refreshAccessToken();
}
}
// Check token every 5 minutes
// ✅ Refresh Access Token Method
// ✅ Refresh Access Token Method
//refreshAccessToken() {
// const refreshToken = localStorage.getItem('refresh_token');
// if (refreshToken) {
// this.http.post(`${this.apiUrl}/refresh`, { refresh_token: refreshToken }).subscribe((response: any) => {
// // Store the new access token
// localStorage.setItem('access_token', response.access_token);
// // Optionally, update the expiry time of the new access token (2 minutes)
// const newAccessTokenExpiry = Date.now() + 2 * 60 * 1000; // 2 minutes
// localStorage.setItem('access_token_expiry', newAccessTokenExpiry.toString());
// alert('Your access token has been refreshed successfully!');
// }, error => {
// console.log("Error refreshing token", error);
// // Handle token refresh failure (e.g., log out the user)
// this.logout();
// });
// }
//}
refreshAccessToken() {
const refreshToken = localStorage.getItem('refresh_token');
if (refreshToken) {
this.http.post(`${this.apiUrl}/refresh`, { refresh_token: refreshToken }).subscribe(
(response: any) => {
// Store the new access token
localStorage.setItem('access_token', response.access_token);
// Update expiry
const newAccessTokenExpiry = Date.now() + 2 * 60 * 1000; // 2 minutes
localStorage.setItem('access_token_expiry', newAccessTokenExpiry.toString());
//alert('Your access token has been refreshed successfully!');
},
error => {
console.log("Error refreshing token", error);
if (
error.status === 401 &&
(error.error.message === 'Refresh token has expired' || error.error.message === 'Invalid refresh token')
) {
//alert('Your session has expired. Please log in again.');
// ✅ Remove tokens and redirect to login
this.removeToken();
this.loggedInSubject.next(false);
window.location.href = '/authentication'; // Adjust this if your login route is different
} else {
// Other errors can be handled differently
console.error("Unexpected error:", error);
}
}
);
}
}
}
|