using FastEndpoints;
using FrameworkBLL.Dashboard;
using FrameworkDAL.DTO.Dashboard;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using static GB5Shared.GB5Constant.Constant;

namespace FrameworkSL.Endpoints.Dashboard
{
    // The cross-host entry point into DashboardHub (Phase 0d) — a BLL running on a DIFFERENT host
    // (Accounts/Analytics/Compliance, each its own process, no shared DI container with
    // FrameworkSL) calls this over plain HTTP instead of injecting IDashboardHubNotifier directly,
    // the same reasoning documented on IDashboardHubNotifier.cs itself. Not yet called by any real
    // trigger (WarehouseFactPostingBLL/KPIEvaluationBLL/UpdateBRS/Compliance's
    // AlertCheckSubscriber) — flagged as the concrete next step once one of those is wired.
    public class NotifyDataChanged : BaseEndpoint<NotifyDataChanged.NotifyDataChangedParameters, ResponseStandardDTO<object>>
    {
        private readonly IDashboardHubNotifier _notifier;

        public NotifyDataChanged(IDashboardHubNotifier notifier)
        {
            _notifier = notifier;
        }

        public override void Configure()
        {
            Post("/Dashboard/NotifyDataChanged");
            AllowAnonymous();
        }

        public record NotifyDataChangedParameters(
            [property: FromHeader] string Login,
            [property: FromBody] NotifyDataChangedDTO Payload
        );

        protected override string? GetCacheKey(NotifyDataChangedParameters req, LoginDTO login) => null;

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            NotifyDataChangedParameters req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                await _notifier.NotifyDataChangedAsync(login.ClientId, req.Payload.DatasetKey, req.Payload.OuId);
                return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
                    "Notification sent.", CacheKeyLevel.NOT_REQUIRED, login);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(
                    ex, CacheKeyLevel.NOT_REQUIRED, login, ex.Message, 500);
            }
        }
    }
}