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.ItemModel;
using MMDAL.DTO.Model;
using MMDAL.Query.ItemModel;

namespace MMBLL.ItemModel
{
    public class ItemModelBLL : IItemModelBLL
    {
        private readonly IItemModelDAL _ItemModelDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public ItemModelBLL(IItemModelDAL IItemModelDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _ItemModelDAL = IItemModelDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetItemModel(int ModelId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ItemModelDAL.GetItemModel(ModelId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> GetSelectListItemModel(CriteriaDTO CriteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                return await _ItemModelDAL.GetSelectListItemModel(CriteriaDTO, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(ItemModelDTO.ModelCode, nameof(ItemModelDTO.ModelCode));
                await _Validation.NotEmpty(ItemModelDTO.ModelName, nameof(ItemModelDTO.ModelName));
                await _Validation.NotEmpty(ItemModelDTO.ModelShortName, nameof(ItemModelDTO.ModelShortName));
                ItemModelDTO.ModelModifiedById = LoginDTO.UserId;
                ItemModelDTO.ModelModifiedOn = DateTime.UtcNow;

                int count = 1;
                if (ItemModelDTO.ModelId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "MODEL", LoginDTO);
                    ItemModelDTO.ModelId = autoNumberDTO.StartNumber;
                    ItemModelDTO.ModelCreatedById = LoginDTO.UserId;
                    ItemModelDTO.ModelCreatedOn = DateTime.UtcNow;

                    await _ItemModelDAL.SaveItemModel(ItemModelDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {ItemModelDTO.ModelId}";
                }
                else
                {
                    await _ItemModelDAL.UpdateItemModel(ItemModelDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {ItemModelDTO.ModelId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && ItemModelDTO.ModelId > 0)
                    await _AutoNumber.RollbackAutoNumber("MODEL", ItemModelDTO.ModelId, LoginDTO);

                throw;
            }
        }

        public async Task<string> DeleteItemModel(int ModelId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ItemModelDAL.DeleteItemModel(ModelId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}