Client Authentication Flow

Client authentication relies on short-lived JWT tokens managed securely by local contexts.

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1. Authentication Lifecycle

sequenceDiagram
    autonumber
    actor User
    participant Login as LoginPage View
    participant API as Auth HTTP Client
    participant Storage as Browser LocalStorage
    participant Router as Application Router Shell

    User->>Login: Submit Credentials (`username`, `password`)
    Login->>API: Execute `POST /auth/token`
    API-->>Login: JWT Bearer Access Token

    Login->>Storage: Save Token String (`localStorage.setItem`)
    Login->>Router: Update Global `AuthContext` state
    Router->>User: Automatically redirect to secure dashboard workspace

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2. Token Storage Strategy

To simplify hydration across page reloads, authenticated JWT blocks are persisted directly within browser local storage structures:

// Persists verified authentication tokens locally to preserve user sessions.
localStorage.setItem('token', access_token);

Protection Measures

• Explicit Scoping: Tokens only grant access to backend route endpoints associated with the current user account, preventing unauthorized actions on cross-tenant collections.
• Auto-Eviction: If API network requests return 401 Unauthorized responses due to expired signatures, client interceptors automatically purge stored token strings and redirect to the login screen.

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3. Graceful Logout Pathways

When a user triggers a manual session disconnect, the client executes cleanup tasks to clear authentication context: 1. Purges local token strings from storage buffers (localStorage.removeItem('token')). 2. Resets the central AuthContext status back to unauthenticated defaults. 3. Redirects viewports back to the root login entry point safely.