using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GB5Shared.DTO.Framework.AutoNumber;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.Resource.Response;
using GB5Shared.Validation;
using MMDAL.CustomCode.CertificationType;
using MMDAL.DTO.CertificationType;

namespace MMBLL.CertificationType
{
    public class CertificationTypeBLL : ICertificationTypeBLL
    {
        private readonly ICertificationTypeDAL _CertificationTypeDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public CertificationTypeBLL(ICertificationTypeDAL CertificationTypeDAL, AutoNumber AutoNumber, IValidation validation)
        {
            _CertificationTypeDAL = CertificationTypeDAL;
            _AutoNumber = AutoNumber;
            _Validation = validation;
        }

        public async Task<CertificationTypeDTO> GetCertificationType(int CertificationTypeId, LoginDTO LoginDTO)
        {
            try
            {
                return await _CertificationTypeDAL.GetCertificationType(CertificationTypeId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(CertificationTypeDTO.CertificationTypeCode, nameof(CertificationTypeDTO.CertificationTypeCode));
                await _Validation.NotEmpty(CertificationTypeDTO.CertificationTypeName, nameof(CertificationTypeDTO.CertificationTypeName));
                CertificationTypeDTO.CertificationTypeModifiedById = LoginDTO.UserId;
                CertificationTypeDTO.CertificationTypeModifiedOn = DateTime.UtcNow;

                int InitialId = CertificationTypeDTO.CertificationTypeId;
                int count = 1 + InitialId;
                if (InitialId == 0)
                {
                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "CERTIFICATIONTYPE", LoginDTO);
                    CertificationTypeDTO.CertificationTypeId = AutoNumberDTO.StartNumber;
                    CertificationTypeDTO.CertificationTypeCreatedById = LoginDTO.UserId;
                    CertificationTypeDTO.CertificationTypeCreatedOn = DateTime.UtcNow;

                    await _CertificationTypeDAL.SaveCertificationType(CertificationTypeDTO, LoginDTO);
                    return $"Details Saved Successfully.";
                }
                else
                {
                    await _CertificationTypeDAL.UpdateCertificationType(CertificationTypeDTO, LoginDTO);
                    return $"Details Updated Successfully.";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && CertificationTypeDTO.CertificationTypeId > 0)
                    await _AutoNumber.RollbackAutoNumber("CERTIFICATIONTYPE", CertificationTypeDTO.CertificationTypeId, LoginDTO);

                throw;
            }
        }


        public async Task<string> GetSelectListCertificationType(int FirstNumber, int MaxResult, CriteriaDTO criteriaDTO, LoginDTO loginDTO)
        {
            try
            {
                return await _CertificationTypeDAL.GetSelectListCertificationType(FirstNumber, MaxResult, criteriaDTO, loginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> DeleteCertificationType(int CertificationTypeId, LoginDTO LoginDTO)
        {
            try
            {
                return await _CertificationTypeDAL.DeleteCertificationType(CertificationTypeId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}