btcpayserver/BTCPayServer/Views/Shared/PosData.cshtml

@using Microsoft.AspNetCore.Mvc.TagHelpers
@model (Dictionary<string, object> Items, int Level)

@functions {

    private bool IsValidURL(string source)
    {
        return Uri.TryCreate(source, UriKind.Absolute, out var uriResult) &&
               (uriResult.Scheme == Uri.UriSchemeHttp || uriResult.Scheme == Uri.UriSchemeHttps);
    }

}

@if (Model.Items.Count > 0)
{
    <table class="table my-0" v-pre>
        @foreach (var (key, value) in Model.Items)
        {
            <tr>
                @if (value is string str)
                {
                    if (!string.IsNullOrEmpty(key))
                    {
                        <th class="w-150px">@key</th>
                    }
                    <td style="white-space:pre-wrap">@* Explicitely remove whitespace at front here *@@if (IsValidURL(str))
                        {
                            <a href="@str" target="_blank" rel="noreferrer noopener">@str</a>
                        }
                        else
                        {
                            @str.Trim()
                        }
                    </td>
                }
                else if (value is Dictionary<string, object> {Count: > 0 } subItems)
                {
                    <td colspan="2">
                        @{
                            @if (!string.IsNullOrEmpty(key))
                            {
                                Write(Html.Raw($"<h{Model.Level + 3} class=\"mt-4 mb-3\">"));
                                Write(key);
                                Write(Html.Raw($"</h{Model.Level + 3}>"));
                            }
                        }
                        <partial name="PosData" model="@((subItems, Model.Level + 1))" />
                    </td>
                }
                else if (value is IEnumerable<object> valueArray)
                {
                    <td colspan="2">
                        @{
                            @if (!string.IsNullOrEmpty(key))
                            {
                                Write(Html.Raw($"<h{Model.Level + 3} class=\"mt-4 mb-3\">"));
                                Write(key);
                                Write(Html.Raw($"</h{Model.Level + 3}>"));
                            }
                        }
                        @foreach (var item in valueArray)
                        {
                            @if (item is Dictionary<string, object> {Count: > 0 } subItems2)
                            {
                                <partial name="PosData" model="@((subItems2, Model.Level + 1))" />
                            }
                            else
                            {
                                <partial name="PosData" model="@((new Dictionary<string, object>() {{"", item}}, Model.Level + 1))" />
                            }
                        }
                    </td>
                }
            </tr>
        }
    </table>
}