using AccountsBLL.ETDS;
using FastEndpoints;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using static GB5Shared.GB5Constant.Constant;

namespace AccountsSL.EndPoints.TDSCategory
{
    // Faithful port of GB4 TDSCategory.svc's TDSUndoPosting. Despite living under TDSCategory.svc,
    // GB4's actual logic lives in EtdsBLL/EtdsDAL, not TDSCategoryBLL — this is a reversal of an
    // e-TDS quarterly return FILING batch (TTDSRETURN and its children), not a voucher/TDS-payment
    // posting undo. Destructive: hard-deletes every row tied to the matching TDSRETURNID(s) for the
    // given OU+Period+FormType+PeriodType, with no downstream-usage guard beyond "records found".
    public class TDSUndoPosting
        : BaseEndpoint<TDSUndoPosting.TDSUndoPostingParameters, ResponseStandardDTO<object>>
    {
        private readonly IEtdsBLL _etdsBLL;

        public TDSUndoPosting(IEtdsBLL etdsBLL)
        {
            _etdsBLL = etdsBLL;
        }

        public override void Configure()
        {
            Post("/TDSCategory/ETDS/TDSUndoPosting");
            AllowAnonymous();
        }

        public record TDSUndoPostingParameters(
            [property: FromHeader] string Login,
            [property: FromBody] CriteriaDTO CriteriaDTO
        );

        protected override string? GetCacheKey(TDSUndoPostingParameters req, LoginDTO loginDTO) => null;

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(TDSUndoPostingParameters req, LoginDTO LoginDTO, CancellationToken ct)
        {
            try
            {
                var Result = await _etdsBLL.TDSUndoPosting(req.CriteriaDTO, LoginDTO!);
                return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(Result, CacheKeyLevel.NOT_REQUIRED, LoginDTO);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(ex, CacheKeyLevel.NOT_REQUIRED, LoginDTO, ex.Message, 500);
            }
        }
    }
}