btcpayserver/BTCPayServer/Views/UILNURLAuth/Create.cshtml

@using LNURL
@model Uri
@{
    ViewData.SetActivePage(ManageNavPages.TwoFactorAuthentication, "Register your Lightning node for LNURL Auth");
    Dictionary<string, string> formats = new Dictionary<string, string>()
    {
        { "Bech32", LNURL.EncodeUri(Model, "login", true).ToString().ToUpperInvariant() },
        { "URI", LNURL.EncodeUri(Model, "login", false).ToString().ToUpperInvariant() }
    };
}

<h3 class="mb-3">@ViewData["Title"]</h3>

<p>Scan the QR code with your Lightning wallet to link it to your user account.</p>

<div id="info-message" class="d-inline-block">
    <ul class="nav justify-content-center my-2">
        @for (int i = 0; i < formats.Count; i++)
        {
            var mode = formats.ElementAt(i);
            <li class="nav-item">
                <a class="btcpay-pill @(i == 0 ? "active" : "")"
                   data-bs-toggle="tab" data-bs-target="#@mode.Key" role="tab"
                   href="#">
                    @mode.Key
                </a>
            </li>
        }
    </ul>
    <div class="tab-content">
        @for (int i = 0; i < formats.Count; i++)
        {
            var mode = formats.ElementAt(i);
            <div class="tab-pane text-center @(i == 0 ? "active" : "")" id="@mode.Key" role="tabpanel">
                <div class="qr-container" style="min-height: 256px;">
                    <vc:qr-code data="@mode.Value" />
                </div>
                <a href="@mode.Value" class="btn btn-primary mt-3" rel="noreferrer noopener">
                    Open in wallet
                </a>
            </div>
        }
    </div>
</div>

@section PageFootContent {
    <script>
        function check(){
            const request = new XMLHttpRequest();
            request.onload  = function() {
              if (request.readyState === 4 && request.status === 200) {
                setTimeout(check, 1000);
              } else if (request.readyState === 4 ){
                  window.location.href = @Safe.Json(Url.Action("RedirectToList", new { successMessage = "The lightning node will now act as a security device for your account" }));
              }
            }

            request.open("GET", window.location.pathname + "/check", true);
            request.send(new FormData());
        }
        check();
    </script>
}