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.Pack;
using MMDAL.DTO.Pack;

namespace MMBLL.Pack
{
    public class PackBLL : IPackBLL
    {
        private readonly IPackDAL _PackDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public PackBLL(IPackDAL PackDAL, AutoNumber AutoNumber, IValidation validation)
        {
            _PackDAL = PackDAL;
            _AutoNumber = AutoNumber;
            _Validation = validation;
        }

        public async Task<PackDTO> GetPack(int PackId, LoginDTO LoginDTO)
        {
            try
            {
                return await _PackDAL.GetPack(PackId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }


        public async Task<string> GetSelectListPack(CriteriaDTO criteriaDTO, LoginDTO loginDTO)
        {
            try
            {
                return await _PackDAL.GetSelectListPack(criteriaDTO, loginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(PackDTO.PackCode, nameof(PackDTO.PackCode));
                await _Validation.NotEmpty(PackDTO.PackName, nameof(PackDTO.PackName));
                PackDTO.PackModifiedById = LoginDTO.UserId;
                PackDTO.PackModifiedOn = DateTime.UtcNow;

                int InitialId = PackDTO.PackId;
                int count = 1 + InitialId;
                if (InitialId == 0)
                {
                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "PACK", LoginDTO);
                    PackDTO.PackId = AutoNumberDTO.StartNumber;
                    PackDTO.PackCreatedById = LoginDTO.UserId;
                    PackDTO.PackCreatedOn = DateTime.UtcNow;

                    await _PackDAL.SavePack(PackDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessName} {PackDTO.PackName}";
                }
                else
                {
                    await _PackDAL.UpdatePack(PackDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessName} {PackDTO.PackName}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && PackDTO.PackId > 0)
                    await _AutoNumber.RollbackAutoNumber("PACK", PackDTO.PackId, LoginDTO);

                throw;
            }
        }


        public async Task<string> DeletePack(int PackId, LoginDTO LoginDTO)
        {
            try
            {
                return await _PackDAL.DeletePack(PackId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}