just-short-it/Components/Pages/Index.razor

@page "/"
@page "/{Id:nonfile}"
@using Microsoft.Extensions.Caching.Distributed

@inject IDistributedCache Db
@inject NavigationManager Navigation

<PageTitle>Startpage - Just Short It</PageTitle>

<div class="text-center flex flex-col items-center gap-4">
	@if (Id is null) {
		<h1 class="text-3xl lg:text-5xl font-bold text-primary-content">Welcome to Just Short It!</h1>
		<h2 class="text-xl lg:text-3xl font-bold text-secondary-content">The KISS single-user URL shortener!</h2>
		<a class="btn btn-primary btn-lg btn-wide min-h-0 h-12 my-3" href="/Urls" data-enhance-nav="false">Start shorting URLs</a>
	} else {
		<p class="text-error" aria-role="alert">@ErrorMessage</p>
	}
</div>

@code {
    [Parameter]
    public string? Id { get; set; }

    private string? ErrorMessage { get; set; }

    protected override async Task OnInitializedAsync() {
        if (Id is not null) {
            string? data = await Db.GetStringAsync(Id);
            if (data is not null) {
                Navigation.NavigateTo(data, true);
            } else {
                ErrorMessage = "Redirect ID not found, it may have been deleted or expired";
            }
        }
    }

}