@inject IInstallationService InstallationService
@inject IJSRuntime JSRuntime
@inject SiteState SiteState

@if (_initialized)
{
    @if (!_installation.Success)
    {
        <Installer />
    }
    else
    {
        @if (string.IsNullOrEmpty(_installation.Message))
        {
            <CascadingAuthenticationState>
                <CascadingValue Value="@PageState">
                    <SiteRouter OnStateChange="@ChangeState" />
                </CascadingValue>
            </CascadingAuthenticationState>
        }
        else
        {
            <div class="app-alert">
                @_installation.Message
            </div>
        }
    }
}

@code {
    private bool _initialized = false;
    private Installation _installation = new Installation { Success = false, Message = "" };

    private PageState PageState { get; set; }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender && !_initialized)
        {
            var interop = new Interop(JSRuntime);
            SiteState.AntiForgeryToken = await interop.GetElementByName(Constants.RequestVerificationToken);
            _installation = await InstallationService.IsInstalled();
            if (_installation.Alias != null)
            {
                SiteState.Alias = _installation.Alias;
            }
            else
            {
                _installation.Message = "Site Not Configured Correctly - No Matching Alias Exists For Host Name";
            }
            _initialized = true;
            StateHasChanged();
        }
    }

    private void ChangeState(PageState pageState)
    {
        PageState = pageState;
        StateHasChanged();
    }
}