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




namespace FrameworkBLL.Lov
{
    public class LovBLL : ILovBLL
    {
        private readonly ILovDAL _LovDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public LovBLL(ILovDAL LovDAL, AutoNumber AutoNumber, IValidation validation)
        {
            _LovDAL = LovDAL;
            _AutoNumber = AutoNumber;
            _Validation = validation;
        }

        public async Task<LovDTO> GetLov(int LovId, LoginDTO LoginDTO)
        {
            try
            {
                return await _LovDAL.GetLov(LovId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(LovDTO.LovCode, nameof(LovDTO.LovCode));
                await _Validation.NotEmpty(LovDTO.LovName, nameof(LovDTO.LovName));
                LovDTO.LovModifiedById = LoginDTO.UserId;
                LovDTO.LovModifiedOn = DateTime.UtcNow;

                int InitialId = LovDTO.LovId;
                int count = 1 + InitialId;
                if (InitialId == 0)
                {

                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "LOV", LoginDTO);
                    LovDTO.LovId = AutoNumberDTO.StartNumber;
                    LovDTO.LovCreatedById = LoginDTO.UserId;
                    LovDTO.LovCreatedOn = DateTime.UtcNow;

                    await _LovDAL.SaveLov(LovDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {LovDTO.LovId}";
                }
                else
                {
                    await _LovDAL.UpdateLov(LovDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {LovDTO.LovId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && LovDTO.LovId > 0)
                    await _AutoNumber.RollbackAutoNumber("LOV", LovDTO.LovId, LoginDTO);

                throw;
            }
        }


       public async Task<string> GetSelectListLov(int FirstNumber,int MaxResult,CriteriaDTO CriteriaDTO,LoginDTO LoginDTO)
        {
            try
            {
                return await _LovDAL.GetSelectListLov(FirstNumber,MaxResult,CriteriaDTO,LoginDTO);
            }
            catch
            {
                throw;
            }
        }
        public async Task<string> DeleteLov(int LovId, LoginDTO LoginDTO)
        {
            try
            {
                return await _LovDAL.DeleteLov(LovId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}