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.AttributeType;
using MMDAL.DTO.AttributeType;

namespace MMBLL.AttributeType
{
    public class AttributeTypeBLL : IAttributeTypeBLL
    {
        private readonly IAttributeTypeDAL _AttributeTypeDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public AttributeTypeBLL(IAttributeTypeDAL AttributeTypeDAL, AutoNumber AutoNumber, IValidation validation)
        {
            _AttributeTypeDAL = AttributeTypeDAL;
            _AutoNumber = AutoNumber;
            _Validation = validation;
        }

        public async Task<AttributeTypeDTO> GetAttributeType(int AttributeTypeId, LoginDTO LoginDTO)
        {
            try
            {
                return await _AttributeTypeDAL.GetAttributeType(AttributeTypeId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(AttributeTypeDTO.AttributeTypeCode, nameof(AttributeTypeDTO.AttributeTypeCode));
                await _Validation.NotEmpty(AttributeTypeDTO.AttributeTypeName, nameof(AttributeTypeDTO.AttributeTypeName));
                AttributeTypeDTO.AttributeTypeModifiedById = LoginDTO.UserId;
                AttributeTypeDTO.AttributeTypeModifiedOn = DateTime.UtcNow;

                int InitialId = AttributeTypeDTO.AttributeTypeId;
                int count = 1 + InitialId;
                if (InitialId == 0)
                {
                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "ATTRIBUTETYPE", LoginDTO);
                    AttributeTypeDTO.AttributeTypeId = AutoNumberDTO.StartNumber;
                    AttributeTypeDTO.AttributeTypeCreatedById = LoginDTO.UserId;
                    AttributeTypeDTO.AttributeTypeCreatedOn = DateTime.UtcNow;

                    await _AttributeTypeDAL.SaveAttributeType(AttributeTypeDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {AttributeTypeDTO.AttributeTypeId}";
                }
                else
                {
                    await _AttributeTypeDAL.UpdateAttributeType(AttributeTypeDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {AttributeTypeDTO.AttributeTypeId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && AttributeTypeDTO.AttributeTypeId > 0)
                    await _AutoNumber.RollbackAutoNumber("ATTRIBUTETYPE", AttributeTypeDTO.AttributeTypeId, LoginDTO);

                throw;
            }
        }


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

        public async Task<string> DeleteAttributeType(int AttributeTypeId, LoginDTO LoginDTO)
        {
            try
            {
                return await _AttributeTypeDAL.DeleteAttributeType(AttributeTypeId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}