btcpayserver/BTCPayServer/Views/Invoice/PosData.cshtml

@model (Dictionary<string, object> Items, int Level)

<table class="table table-hover table-responsive-md removetopborder">
    @foreach (var (key, value) in Model.Items)
    {
        <tr>
            @if (value is string str)
            {
                if (!string.IsNullOrEmpty(key))
                {
                    <th class="w-150px">@key</th>
                }
                <td>
                        @if (str.StartsWith("http"))
                        {
                        <a href="@str" target="_blank" rel="noreferrer noopener">@str</a>
                        }
                        else
                        {
                            @value
                        }
                </td>
            }
            else if (value is Dictionary<string, object>subItems)
            {
                @* This is the array case *@
                if (subItems.Count == 1 && subItems.First().Value is string str2)
                {
                    <th class="w-150px">@key</th>
                    <td>
                        @if (str2.StartsWith("http"))
                        {
                        <a href="@str2" target="_blank" rel="noreferrer noopener">@str2</a>
                        }
                        else
                        {
                            @subItems.First().Value
                        }
                    </td>
                }
                else
                {
                    <td colspan="2">
                        @Html.Raw($"<h{Model.Level + 3} class='mt-3'>{key}</h{Model.Level + 3}>")
                        <partial name="PosData" model="(subItems, Model.Level + 1)"/>
                    </td>
                }
            }
        </tr>
    }
</table>