using AccountsBLL.Warehouse;
using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;

namespace AccountsSL.EndPoints.WarehouseFact
{
    // Drains TWAREHOUSECHANGEQUEUE for a specific fact and posts the delta.
    // Called manually (admin trigger) or by a Quartz job on a short schedule.
    // The BLL uses UPDATE+OUTPUT for atomic claim — concurrent calls are safe.
    public class PostWarehouseDelta : BaseEndpoint<PostWarehouseDelta.PostWarehouseDeltaParameters, ResponseStandardDTO<object>>
    {
        private readonly IWarehouseChangeQueueBLL _queueBll;

        public PostWarehouseDelta(IWarehouseChangeQueueBLL queueBll) => _queueBll = queueBll;

        public override void Configure()
        {
            Post("/Warehouse/PostWarehouseDelta");
            AllowAnonymous();
        }

        public record PostWarehouseDeltaParameters(
            [property: FromHeader] string Login,
            [property: QueryParam] int FactId
        );

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

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            PostWarehouseDeltaParameters req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var result = await _queueBll.ProcessDeltaForFactAsync(req.FactId, login, ct);
                var summary = new
                {
                    SucceededOuCount = result.SucceededOuIds.Count,
                    FailedOuCount    = result.FailedOuIds.Count,
                    result.FailedOuIds
                };
                return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
                    System.Text.Json.JsonSerializer.Serialize(summary),
                    GB5Shared.GB5Constant.Constant.CacheKeyLevel.NOT_REQUIRED, login);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(
                    ex, GB5Shared.GB5Constant.Constant.CacheKeyLevel.NOT_REQUIRED, login, ex.Message, 500);
            }
        }
    }
}