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

namespace AccountsSL.EndPoints.Voucher
{
    // Faithful port of GB4 Voucher.svc's GetUsedVoucherInBillAllocation — given a voucher
    // (typically a bill/invoice), returns the reference/detail numbers of payment entries already
    // allocated against its bill-allocation lines.
    public class GetUsedVoucherInBillAllocation
        : BaseEndpoint<GetUsedVoucherInBillAllocation.GetUsedVoucherInBillAllocationParameters, ResponseStandardDTO<object>>
    {
        private readonly IVoucherBLL _VoucherBLL;

        public GetUsedVoucherInBillAllocation(IVoucherBLL voucherBLL)
        {
            _VoucherBLL = voucherBLL;
        }

        public override void Configure()
        {
            Post("/Voucher/GetUsedVoucherInBillAllocation");
            AllowAnonymous();
        }

        public record GetUsedVoucherInBillAllocationParameters(
            [property: FromHeader] string Login,
            [property: QueryParam] int VoucherId
        );

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

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            GetUsedVoucherInBillAllocationParameters req,
            LoginDTO LoginDTO,
            CancellationToken ct)
        {
            try
            {
                var result = await _VoucherBLL.GetUsedVoucherInBillAllocation(req.VoucherId, 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);
            }
        }
    }
}