Class JwtAuthStateProvider

Authentication state provider that uses JWT tokens for authentication.

Inheritance

object

AuthenticationStateProvider

JwtAuthStateProvider

Inherited Members

AuthenticationStateProvider.NotifyAuthenticationStateChanged(Task<AuthenticationState>)

AuthenticationStateProvider.AuthenticationStateChanged

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: OEMS.Core.Application

Assembly: OEMS.Core.dll

Syntax

public class JwtAuthStateProvider : AuthenticationStateProvider

Remarks

This provider manages JWT token handling for Blazor applications, including:

Token validation and storage in browser local storage
User authentication state management
Refresh token integration
User authentication notifications

Constructors

JwtAuthStateProvider(ILocalStorageService, IAuthService)

Initializes a new instance of the JWT authentication state provider.

Declaration

public JwtAuthStateProvider(ILocalStorageService localStorage, IAuthService authService)

Parameters

Type	Name	Description
ILocalStorageService	localStorage	Local storage service for storing tokens
IAuthService	authService	Authentication service for validating tokens

Methods

GetAuthenticationStateAsync()

Gets the current authentication state of the user.

Declaration

public override Task<AuthenticationState> GetAuthenticationStateAsync()

Returns

Type	Description
Task<AuthenticationState>	Authentication state containing the user's claims if authenticated, or an empty claims identity if not authenticated.

Overrides

AuthenticationStateProvider.GetAuthenticationStateAsync()

Remarks

This method retrieves the JWT token from local storage, validates it, and extracts the claims to determine the user's authentication state.

LogoutAsync()

Logs the user out by removing authentication tokens from local storage.

Declaration

public Task LogoutAsync()

Returns

Type	Description
Task	Task representing the asynchronous logout operation

NotifyUserAuthentication(string)

Notifies the framework that the authentication state has changed to authenticated.

Declaration

public void NotifyUserAuthentication(string token)

Parameters

Type	Name	Description
string	token	JWT token containing the user's claims

NotifyUserLogout()

Notifies the framework that the authentication state has changed to unauthenticated.

Declaration

public void NotifyUserLogout()

SetTokenAsync(string, string, DateTime?)

Stores authentication tokens in local storage and updates the authentication state.

Declaration

public Task<bool> SetTokenAsync(string token, string refreshToken = null, DateTime? expiryDate = null)

Parameters

Type	Name	Description
string	token	JWT token for authenticating the user
string	refreshToken	Optional refresh token for obtaining new JWT tokens
DateTime?	expiryDate	Optional expiration date of the JWT token

Returns

Type	Description
Task<bool>	True if tokens were successfully stored, otherwise false