blazing-console/Components/RequiresAuth.razor

@using Blazored.LocalStorage
@inject ILocalStorageService localStorage
@inject APIService api
@inject NavigationManager Navigation

@if (IsAuthenticated) {
    @ChildContent
} else {
    @if (LoadingContent != null) {
        @LoadingContent
    } else {
        <FluentProgressRing></FluentProgressRing>
    }
}

@code {
    public bool IsAuthenticated { get; set; } = false;

    protected override async Task OnInitializedAsync()
    {
        string? jwt = await localStorage.GetItemAsync<string>("jwt");
        if (jwt == null) {
            Navigation.NavigateTo("/login", false);
            return;
        }

        api.SetJwt(jwt);
        bool authorized = await api.TestAuthorization();
        if (authorized) {
            IsAuthenticated = true;
        } else {
            Navigation.NavigateTo("/login", false);
        }
    }

    [Parameter]
    public required RenderFragment ChildContent { get; set; }

    [Parameter]
    public RenderFragment? LoadingContent { get; set; }
}