using FastEndpoints;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using MMBLL.LotDetail;
using static GB5Shared.GB5Constant.Constant;

namespace MMSL.EndPoints.LotDetail
{
    /// <summary>
    /// Lot stock picklist.
    /// Migrated from GB4 <c>POST /mms/Lot.svc/LotDetail/SelectList</c>
    /// (LotService.GetSelectListLotForLotDetail). The GB4 `/mms` prefix is dropped —
    /// prefixing is handled at the gateway, not by the endpoint.
    /// </summary>
    public class GetSelectListLotDetail : BaseEndpoint<GetSelectListLotDetail.GetSelectListLotDetailParameters, ResponseStandardDTO<object>>
    {
        private readonly ILotDetailBLL _LotDetailBLL;

        public GetSelectListLotDetail(ILotDetailBLL ILotDetailBLL)
        {
            _LotDetailBLL = ILotDetailBLL;
        }

        public override void Configure()
        {
            Post("/LotDetail/GetSelectListLotDetail");
            AllowAnonymous();
        }

        public record GetSelectListLotDetailParameters(
            [property: QueryParam] int FirstNumber,
            [property: QueryParam] int MaxResult,
            [property: FromHeader] string Login,
            [property: FromBody] CriteriaDTO CriteriaDTO
            );

        // No GetCacheKey override — live stock balances must never be served from cache.

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            GetSelectListLotDetailParameters req, LoginDTO LoginDTO, CancellationToken ct)
        {
            try
            {
                int firstNumber = req.FirstNumber;
                int maxResult = req.MaxResult;

                // GB4 read these defaults from common config ("FromNumber"/"ToNumber");
                // GB5 has no such config path, so use the same fallback as GetSelectListItem.
                if (firstNumber == 0 && maxResult == 0)
                {
                    firstNumber = 0;
                    maxResult = 10;
                }

                var result = await _LotDetailBLL
                    .GetSelectListLotDetail(firstNumber, maxResult, req.CriteriaDTO, LoginDTO!, ct);

                // -1/-1 = unpaged, so the count reflects the whole filtered result set.
                // GB4 stubbed this and always returned 0.
                int total = Convert.ToInt32(await _LotDetailBLL
                    .GetSelectListLotDetail(-1, -1, req.CriteriaDTO, LoginDTO!, ct, true));

                var response = await GB5Shared.ResponseStandard.Response
                    .CreateSuccessResponse(result, CacheKeyLevel.NOT_REQUIRED, LoginDTO);
                response.Total = total;
                return response;
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response
                    .CreateExceptionError<string>(ex, CacheKeyLevel.NOT_REQUIRED, LoginDTO, ex.Message, 500);
            }
        }
    }
}