using FrameworkDAL.CustomCode.Region;
using FrameworkDAL.DTO.Region;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.DTO.Framework.AutoNumber;
using GB5Shared.Validation;
using System.ComponentModel.DataAnnotations;
using GB5Shared.Resource.Response;



namespace FrameworkBLL.Region
{
    public class RegionBLL : IRegionBLL
    {
        private readonly IRegionDAL _RegionDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation; 
        public RegionBLL(IRegionDAL RegionDAL, AutoNumber AutoNumber,IValidation validation)
        {
            _RegionDAL = RegionDAL;
            _AutoNumber = AutoNumber;
            _Validation = validation;
        }

        public async Task<RegionDTO> GetRegion(int RegionId, LoginDTO LoginDTO)
        {
            try
            {
                return await _RegionDAL.GetRegion(RegionId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> GetSelectListRegion(CriteriaDTO criteriaDTO, LoginDTO loginDTO)
        {
            try
            {
                return await _RegionDAL.GetSelectListRegion(criteriaDTO, loginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> SaveRegion(RegionDTO RegionDTO, LoginDTO LoginDTO)
        {
            if (RegionDTO == null) throw new ArgumentNullException(nameof(RegionDTO));
            AutoNumberDTO? autoNumberDTO = null;

            try
            {
                await _Validation.NotEmpty(RegionDTO.RegionCode, nameof(RegionDTO.RegionCode));
                await _Validation.NotEmpty(RegionDTO.RegionName, nameof(RegionDTO.RegionName));
                RegionDTO.RegionModifiedById = LoginDTO.UserId;
                RegionDTO.RegionModifiedOn = DateTime.UtcNow;

                int InitialId = RegionDTO.RegionId;
                int count = 1 + InitialId;
                if (InitialId == 0)
                {

                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "REGION", LoginDTO);
                    RegionDTO.RegionId = AutoNumberDTO.StartNumber;
                    RegionDTO.RegionCreatedById = LoginDTO.UserId;
                    RegionDTO.RegionCreatedOn = DateTime.UtcNow;

                    await _RegionDAL.SaveRegion(RegionDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {RegionDTO.RegionId}";
                }
                else
                {
                    await _RegionDAL.UpdateRegion(RegionDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {RegionDTO.RegionId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && RegionDTO.RegionId > 0)
                    await _AutoNumber.RollbackAutoNumber("REGION", RegionDTO.RegionId, LoginDTO);

                throw;
            }
        }

        public async Task<string> DeleteRegion(int RegionId, LoginDTO LoginDTO)
        {
            try
            {
                return await _RegionDAL.DeleteRegion(RegionId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}