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.EmployeeNominee;
using PayRollDAL.DTO.EmployeeNominee;

namespace PayRollBLL.EmployeeNominee
{
    public class EmployeeNomineeBLL : IEmployeeNomineeBLL
    {
        private readonly IEmployeeNomineeDAL _EmployeeNomineeDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public EmployeeNomineeBLL(IEmployeeNomineeDAL IEmployeeNomineeDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _EmployeeNomineeDAL = IEmployeeNomineeDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

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

            try
            {
                int count = 1;
                if (EmployeeNomineeDTO.EmployeeNomineeId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "EMPLOYEENOMINEE", LoginDTO);
                    EmployeeNomineeDTO.EmployeeNomineeId = autoNumberDTO.StartNumber;

                    await _EmployeeNomineeDAL.SaveEmployeeNominee(EmployeeNomineeDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {EmployeeNomineeDTO.EmployeeNomineeId}";
                }
                else
                {
                    await _EmployeeNomineeDAL.UpdateEmployeeNominee(EmployeeNomineeDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {EmployeeNomineeDTO.EmployeeNomineeId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && EmployeeNomineeDTO.EmployeeNomineeId > 0)
                    await _AutoNumber.RollbackAutoNumber("EMPLOYEENOMINEE", EmployeeNomineeDTO.EmployeeNomineeId, LoginDTO);

                throw;
            }
        }

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

        public async Task<string> DeleteEmployeeNominee(int EmployeeNomineeId, LoginDTO LoginDTO)
        {
            try
            {
                return await _EmployeeNomineeDAL.DeleteEmployeeNominee(EmployeeNomineeId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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