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

namespace MMBLL.ItemCategory
{
    public class ItemCategoryBLL : IItemCategoryBLL
    {
        private readonly IItemCategoryDAL _ItemCategoryDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;


        public ItemCategoryBLL(IItemCategoryDAL ItemCategoryDAL, AutoNumber AutoNumber, IValidation validation)
        {
            _ItemCategoryDAL = ItemCategoryDAL;
            _AutoNumber = AutoNumber;
            _Validation = validation;

        }

        public async Task<string> GetItemCategory(int ItemCategoryId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ItemCategoryDAL.GetItemCategory(ItemCategoryId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
        public async Task<string> GetSelectListItemCategory(CriteriaDTO criteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                return await _ItemCategoryDAL.GetSelectListItemCategory(criteriaDTO, LoginDTO);

            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> SaveItemCategory(ItemCategoryDTO ItemCategoryDTO, LoginDTO LoginDTO)
        {
            if (ItemCategoryDTO == null) throw new ArgumentNullException(nameof(ItemCategoryDTO));
            AutoNumberDTO? autoNumberDTO = null;
            try
            {
                await _Validation.NotEmpty(ItemCategoryDTO.ItemCategoryCode, nameof(ItemCategoryDTO.ItemCategoryCode));
                await _Validation.NotEmpty(ItemCategoryDTO.ItemCategoryName, nameof(ItemCategoryDTO.ItemCategoryName));
                ItemCategoryDTO.ItemCategoryModifiedById = LoginDTO.UserId;
                ItemCategoryDTO.ItemCategoryModifiedOn = DateTime.UtcNow;

                int initialId = ItemCategoryDTO.ItemCategoryId;
                int count = 1 + initialId;
                if (initialId == 0)
                {
                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "ITEMCATEGORY", LoginDTO);
                    ItemCategoryDTO.ItemCategoryId = AutoNumberDTO.StartNumber;
                    ItemCategoryDTO.ItemCategoryCreatedById = LoginDTO.UserId;
                    ItemCategoryDTO.ItemCategoryCreatedOn = DateTime.UtcNow;

                    await _ItemCategoryDAL.SaveItemCategory(ItemCategoryDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessCode} {ItemCategoryDTO.ItemCategoryCode}";
                }
                else
                {
                    await _ItemCategoryDAL.UpdateItemCategory(ItemCategoryDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessCode} {ItemCategoryDTO.ItemCategoryCode}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && ItemCategoryDTO.ItemCategoryId > 0)
                    await _AutoNumber.RollbackAutoNumber("ITEMCATEGORY", ItemCategoryDTO.ItemCategoryId, LoginDTO);

                throw;
            }
        }


        public async Task<string> DeleteItemCategory(int ItemCategoryId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ItemCategoryDAL.DeleteItemCategory(ItemCategoryId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}