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 PayRollDAL.CustomeCode.EmployeeExperience;
using PayRollDAL.DTO.EmployeeExperience;
using PayRollDAL.Query.EmployeeExperience;

namespace PayRollBLL.EmployeeExperience
{
    public class EmployeeExperienceBLL : IEmployeeExperienceBLL
    {
        private readonly IEmployeeExperienceDAL _EmployeeExperienceDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public EmployeeExperienceBLL(IEmployeeExperienceDAL IEmployeeExperienceDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _EmployeeExperienceDAL = IEmployeeExperienceDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

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

            try
            {
                int count = 1;
                if (EmployeeExperienceDTO.EmployeeExperienceId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "EMPLOYEEEXPERIENCE", LoginDTO);
                    EmployeeExperienceDTO.EmployeeExperienceId = autoNumberDTO.StartNumber;

                    await _EmployeeExperienceDAL.SaveEmployeeExperience(EmployeeExperienceDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {EmployeeExperienceDTO.EmployeeExperienceId}";
                }
                else
                {
                    await _EmployeeExperienceDAL.UpdateEmployeeExperience(EmployeeExperienceDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {EmployeeExperienceDTO.EmployeeExperienceId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && EmployeeExperienceDTO.EmployeeExperienceId > 0)
                    await _AutoNumber.RollbackAutoNumber("EMPLOYEEEXPERIENCE", EmployeeExperienceDTO.EmployeeExperienceId, LoginDTO);

                throw;
            }
        }

        public async Task<string> DeleteEmployeeExperience(int EmployeeId, LoginDTO LoginDTO)
        {
            try
            {
                return await _EmployeeExperienceDAL.DeleteEmployeeExperience(EmployeeId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> GetSelectListEmployeeExperience(int FirstNumber, int MaxResult, CriteriaDTO CriteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                return await _EmployeeExperienceDAL.GetSelectListEmployeeExperience(FirstNumber, MaxResult, CriteriaDTO, LoginDTO);
            }
            catch (Exception ex)
            {
                throw new Exception("Error in GetSelectListEmployeeExperience", ex);
            }
        }
    }
}