using FrameworkBLL.Dashboard;
using Microsoft.AspNetCore.SignalR;
using Microsoft.Extensions.Logging;

namespace FrameworkSL.Hubs.Dashboard
{
    // ============================================================
    // DashboardHubNotifier — SL implementation of IDashboardHubNotifier.
    //
    // Wraps IHubContext<DashboardHub, IDashboardClient> so any in-process FrameworkBLL caller can
    // push a "this dataset changed" notification without referencing ASP.NET types directly —
    // same pattern as SysJobHubNotifier.
    //
    // Registration:
    //   services.AddSingleton<IDashboardHubNotifier, DashboardHubNotifier>();
    // ============================================================
    public class DashboardHubNotifier : IDashboardHubNotifier
    {
        private readonly IHubContext<DashboardHub, IDashboardClient> _hub;
        private readonly ILogger<DashboardHubNotifier> _logger;

        public DashboardHubNotifier(IHubContext<DashboardHub, IDashboardClient> hub, ILogger<DashboardHubNotifier> logger)
        {
            _hub = hub;
            _logger = logger;
        }

        public async Task NotifyDataChangedAsync(int clientId, string datasetKey, int? ouId)
        {
            try
            {
                await _hub.Clients
                    .Group(DashboardHub.TenantGroup(clientId))
                    .DataChanged(datasetKey, ouId, DateTime.UtcNow);
            }
            catch (Exception ex)
            {
                _logger.LogWarning(ex,
                    "DashboardHubNotifier: failed to push DataChanged for client {ClientId} dataset {DatasetKey}",
                    clientId, datasetKey);
            }
        }
    }
}