using FrameworkDAL.CustomCode.Formula;
using FrameworkDAL.DTO.Formula;
using FrameworkDAL.DTO.Region;
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;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Threading.Tasks;

namespace FrameworkBLL.Formula
{
    public class FormulaBLL : IFormulaBLL
    {
        private readonly IFormulaDAL _FormulaDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public FormulaBLL(IFormulaDAL FormulaDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _FormulaDAL = FormulaDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetFormula(int FormulaId, LoginDTO LoginDTO)
        {
            try
            {
                return await _FormulaDAL.GetFormula(FormulaId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(FormulaDTO.FormulaCode, nameof(FormulaDTO.FormulaCode));
                await _Validation.NotEmpty(FormulaDTO.FormulaName, nameof(FormulaDTO.FormulaName));
                FormulaDTO.FormulaModifiedById = LoginDTO.UserId;
                FormulaDTO.FormulaModifiedOn = DateTime.UtcNow;

                int count = 1;
                if (FormulaDTO.FormulaId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "Formula", LoginDTO);
                    FormulaDTO.FormulaId = autoNumberDTO.StartNumber;
                    FormulaDTO.FormulaCreatedById = LoginDTO.UserId;
                    FormulaDTO.FormulaCreatedOn = DateTime.UtcNow;

                    await _FormulaDAL.SaveFormula(FormulaDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {FormulaDTO.FormulaId}";
                }
                else
                {
                    await _FormulaDAL.UpdateFormula(FormulaDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {FormulaDTO.FormulaId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && FormulaDTO.FormulaId > 0)
                    await _AutoNumber.RollbackAutoNumber("Formula", FormulaDTO.FormulaId, LoginDTO);

                throw;
            }
        }

        public async Task<string> GetSelectListFormula(int FirstNumber, int MaxResult, CriteriaDTO CriteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                return await _FormulaDAL.GetSelectListFormula(FirstNumber, MaxResult, CriteriaDTO, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> DeleteFormula(int FormulaId, LoginDTO LoginDTO)
        {
            try
            {
                return await _FormulaDAL.DeleteFormula(FormulaId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}