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

namespace FrameworkBLL.Parameter
{
    public class ParameterBLL : IParameterBLL
    {
        private readonly IParameterDAL _ParameterDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public ParameterBLL(IParameterDAL IParameterDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _ParameterDAL = IParameterDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetParameter (int ParameterId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ParameterDAL.GetParameter(ParameterId, LoginDTO);
            }
            catch(Exception)
            {
                throw;
            }
        }
        public async Task<string> SaveParameter(ParameterDTO ParameterDTO, LoginDTO LoginDTO)
        {
            if (ParameterDTO == null) throw new ArgumentNullException(nameof(ParameterDTO));
            AutoNumberDTO? autoNumberDTO = null;
            try
            {
                await _Validation.NotEmpty(ParameterDTO.ParameterCode, nameof(ParameterDTO.ParameterCode));
                await _Validation.NotEmpty(ParameterDTO.ParameterName, nameof(ParameterDTO.ParameterName));
                ParameterDTO.ParameterModifiedById = LoginDTO.UserId;
                ParameterDTO.ParameterModifiedOn = DateTime.UtcNow;

                int initialId = ParameterDTO.ParameterId;
                int count = 1 + initialId;
                if (initialId == 0)
                {
                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "PARAMETER", LoginDTO);
                    ParameterDTO.ParameterId = AutoNumberDTO.StartNumber;
                    ParameterDTO.ParameterCreatedById = LoginDTO.UserId;
                    ParameterDTO.ParameterCreatedOn = DateTime.UtcNow;

                    await _ParameterDAL.SaveParameter(ParameterDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {ParameterDTO.ParameterId}";
                }
                else
                {
                    await _ParameterDAL.UpdateParameter(ParameterDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {ParameterDTO.ParameterId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && ParameterDTO.ParameterId > 0)
                    await _AutoNumber.RollbackAutoNumber("PARAMETER", ParameterDTO.ParameterId, LoginDTO);

                throw;
            }
        }
        public async Task<string> DeleteParameter(int ParameterId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ParameterDAL.DeleteParameter(ParameterId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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