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

namespace FrameworkSL.Endpoints.DataSync
{
    // Fires an async sync run and returns the RunId immediately (fire-and-forget).
    // The caller may subscribe to SignalR hub group "datasync:{runId}" for progress updates.
    public class TriggerSyncJob : BaseEndpoint<TriggerSyncJob.TriggerSyncJobParameters, ResponseStandardDTO<object>>
    {
        private readonly IDataSyncRunBLL _runBll;

        public TriggerSyncJob(IDataSyncRunBLL runBll) => _runBll = runBll;

        public override void Configure()
        {
            Post("/DataSync/TriggerSyncJob");
            AllowAnonymous();
        }

        public record TriggerSyncJobParameters(
            [property: FromHeader] string Login,
            [property: QueryParam] int SyncJobId
        );

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

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            TriggerSyncJobParameters req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                // Start the run on a background thread — do not await the full execution.
                // ExecuteSyncJobAsync creates the TDSYNCRUNLOG row synchronously before returning RunId.
                var runId = await _runBll.ExecuteSyncJobAsync(
                    req.SyncJobId, triggeredBy: 1, triggeredByUserId: login.UserId, login, ct);

                return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
                    $"Sync job triggered. RunId = {runId}. Subscribe to datasync:{runId} for progress.",
                    CacheKeyLevel.NOT_REQUIRED, login);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(
                    ex, CacheKeyLevel.NOT_REQUIRED, login, ex.Message, 500);
            }
        }
    }
}