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

namespace AdminBLL.Reason
{
    public class ReasonBLL : IReasonBLL
    {
        private readonly IReasonDAL _ReasonDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public ReasonBLL(IReasonDAL IReasonDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _ReasonDAL = IReasonDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetReason(int ReasonId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ReasonDAL.GetReason(ReasonId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

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

            try
            {
                await _Validation.NotEmpty(ReasonDTO.ReasonCode, nameof(ReasonDTO.ReasonCode));
                await _Validation.NotEmpty(ReasonDTO.ReasonName, nameof(ReasonDTO.ReasonName));
                ReasonDTO.ReasonModifiedById = LoginDTO.UserId;
                ReasonDTO.ReasonModifiedOn = DateTime.UtcNow;

                int count = 1;
                if (ReasonDTO.ReasonId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "REASON", LoginDTO);
                    ReasonDTO.ReasonId = autoNumberDTO.StartNumber;
                    ReasonDTO.ReasonCreatedById = LoginDTO.UserId;
                    ReasonDTO.ReasonCreatedOn = DateTime.UtcNow;

                    await _ReasonDAL.SaveReason(ReasonDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {ReasonDTO.ReasonId}";
                }
                else
                {
                    await _ReasonDAL.UpdateReason(ReasonDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {ReasonDTO.ReasonId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && ReasonDTO.ReasonId > 0)
                    await _AutoNumber.RollbackAutoNumber("REASON", ReasonDTO.ReasonId, LoginDTO);

                throw;
            }
        }

        public async Task<string> DeleteReason(int ReasonId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ReasonDAL.DeleteReason(ReasonId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}