Add guestGuard to protect login route

[Pho3niX90]

User description

• Introduced guestGuard to restrict access to the login page for authenticated users.
• Updated app.routes.ts to apply guestGuard to the login route.

---

PR Type

Enhancement

---

Description

• Introduce guestGuard to block authenticated users

• Apply guard on /login route using canActivate

---

Diagram Walkthrough

flowchart LR
  A["Login Route"] -- "canActivate guestGuard" --> B{"Authenticated?"}
  B -- "true" --> C["Redirect to Home"]
  B -- "false" --> D["Render Login"]

Loading

File Walkthrough

	Relevant files
Configuration changes	app.routes.ts Apply guestGuard to login route                                                    frontend/src/app/app.routes.ts Import guestGuard from guest.guard.ts Add canActivate: [guestGuard] to login route Minor formatting adjustments +8/-6
Enhancement	guest.guard.ts Implement guestGuard logic                                                              frontend/src/app/guest.guard.ts Create guestGuard function file Inject AuthService and Router dependencies Redirect authenticated users to home Allow access for unauthenticated users +14/-0

---

[Pho3niX90]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Async Handling Ensure isAuthenticated() returns a synchronous boolean. If it returns an Observable or Promise, the guard should await or convert it to a boolean result (e.g. with firstValueFrom or map). if (authService.isAuthenticated()) { return router.createUrlTree(['/']); } return true; Wildcard Route Confirm the wildcard route includes pathMatch: 'full' to prevent unintended prefix matches or redirect loops. {path: '**', redirectTo: ''}

[Pho3niX90]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Security	Add authentication guard Protect the root route by adding authGuard to prevent unauthenticated users from accessing protected pages. This ensures that only logged-in users can load the layout and its child routes. frontend/src/app/app.routes.ts [13-15] { path: '', component: Layout, + canActivate: [authGuard], children: [...] } Suggestion importance[1-10]: 9 __ Why: Adding authGuard to the root Layout route ensures that only authenticated users can access all child routes, significantly improving security.	High