using GB5Shared.DTO.Framework.AutoNumber;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.Resource.GB5Solution;
using GB5Shared.Resource.Response;
using GB5Shared.ResponseStandard;
using GB5Shared.Validation;
using MMDAL.CustomCode.ChargeElement;
using MMDAL.DTO.Charge;
using System;
using System.ComponentModel.DataAnnotations;
using System.Threading.Tasks;

namespace MMBLL.ChargeElement
{
    public class ChargeElementBLL : IChargeElementBLL
    {
        private readonly IChargeElementDAL _ChargeElementDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public ChargeElementBLL(IChargeElementDAL ChargeElementDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _ChargeElementDAL = ChargeElementDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetChargeElement(int ChargeElementId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ChargeElementDAL.GetChargeElement(ChargeElementId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> SaveChargeElement(ChargeElementDTO chargeElementDTO, LoginDTO loginDTO)
        {
            if (chargeElementDTO == null)
                throw new ArgumentNullException(nameof(chargeElementDTO));

            AutoNumberDTO? autoNumberDTO = null;

            try
            {
                // Validations
                await _Validation.NotEmpty(chargeElementDTO.ChargeElementCode, nameof(chargeElementDTO.ChargeElementCode));
                await _Validation.NotEmpty(chargeElementDTO.ChargeElementName, nameof(chargeElementDTO.ChargeElementName));

                // Modified Info
                chargeElementDTO.ChargeElementModifiedById = loginDTO.UserId;
                chargeElementDTO.ChargeElementModifiedOn = DateTime.UtcNow;

                int count = 1;

                if (chargeElementDTO.ChargeElementId == 0)
                {
                    // Generate auto number for new record
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "CHARGEELEMENT", loginDTO);
                    chargeElementDTO.ChargeElementId = autoNumberDTO.StartNumber;

                    // Created Info
                    chargeElementDTO.ChargeElementCreatedById = loginDTO.UserId;
                    chargeElementDTO.ChargeElementCreatedOn = DateTime.UtcNow;

                    await _ChargeElementDAL.SaveChargeElement(chargeElementDTO, loginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {chargeElementDTO.ChargeElementId}";
                }
                else
                {
                    await _ChargeElementDAL.UpdateChargeElement(chargeElementDTO, loginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {chargeElementDTO.ChargeElementId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                // Rollback autonumber to avoid gaps
                if (autoNumberDTO != null && chargeElementDTO.ChargeElementId > 0)
                    await _AutoNumber.RollbackAutoNumber("CHARGEELEMENT", chargeElementDTO.ChargeElementId, loginDTO);

                throw;
            }
        }


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

        public async Task<string> DeleteChargeElement(int ChargeElementId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ChargeElementDAL.DeleteChargeElement(ChargeElementId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}