Umbraco-CMS/src/Umbraco.Web.BackOffice/Controllers/PublishedStatusController.cs

using Microsoft.AspNetCore.Mvc;
using Umbraco.Cms.Core.PublishedCache;

namespace Umbraco.Cms.Web.BackOffice.Controllers;

public class PublishedStatusController : UmbracoAuthorizedApiController
{
    private readonly IPublishedSnapshotStatus _publishedSnapshotStatus;

    public PublishedStatusController(IPublishedSnapshotStatus publishedSnapshotStatus) => _publishedSnapshotStatus =
        publishedSnapshotStatus ?? throw new ArgumentNullException(nameof(publishedSnapshotStatus));

    [HttpGet]
    public string GetPublishedStatusUrl()
    {
        if (!string.IsNullOrWhiteSpace(_publishedSnapshotStatus.StatusUrl))
        {
            return _publishedSnapshotStatus.StatusUrl;
        }

        throw new NotSupportedException("Not supported: " + _publishedSnapshotStatus.GetType().FullName);
    }
}