@page "/"
@page "/{Id}"
@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 min-h-0 h-12" href="/Urls">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";
            }
        }
    }

}