52 lines
1.5 KiB
C#
52 lines
1.5 KiB
C#
using Microsoft.AspNetCore.Components.Authorization;
|
|
using Microsoft.Extensions.DependencyInjection; // 需要这个命名空间来获取 IServiceProvider
|
|
using System; // 需要这个命名空间来使用 Lazy<T>
|
|
|
|
namespace TechHelper.Client.HttpRepository
|
|
{
|
|
public class RefreshTokenService : IRefreshTokenService
|
|
{
|
|
|
|
private readonly Lazy<AuthenticationStateProvider> _authenticationStateProvider;
|
|
private readonly Lazy<IAuthenticationClientService> _authenticationClientService;
|
|
|
|
public RefreshTokenService(IServiceProvider serviceProvider)
|
|
{
|
|
_authenticationStateProvider = new Lazy<AuthenticationStateProvider>(
|
|
() => serviceProvider.GetRequiredService<AuthenticationStateProvider>());
|
|
|
|
_authenticationClientService = new Lazy<IAuthenticationClientService>(
|
|
() => serviceProvider.GetRequiredService<IAuthenticationClientService>());
|
|
}
|
|
|
|
public async Task<string> TryRefreshToken()
|
|
{
|
|
var authState = await _authenticationStateProvider.Value.GetAuthenticationStateAsync();
|
|
var user = authState.User;
|
|
|
|
if (user?.Identity == null || !user.Identity.IsAuthenticated)
|
|
{
|
|
return string.Empty;
|
|
}
|
|
|
|
var expClaim = user.FindFirst(c => c.Type.Equals("exp"))?.Value;
|
|
if (string.IsNullOrEmpty(expClaim))
|
|
{
|
|
return string.Empty;
|
|
}
|
|
|
|
var expTime = DateTimeOffset.FromUnixTimeSeconds(
|
|
Convert.ToInt64(expClaim));
|
|
|
|
var diff = expTime - DateTime.UtcNow;
|
|
|
|
|
|
var n = DateTime.UtcNow;
|
|
|
|
if (diff.TotalMinutes <= 2)
|
|
return await _authenticationClientService.Value.RefreshTokenAsync();
|
|
|
|
return string.Empty;
|
|
}
|
|
}
|
|
} |