using FrameworkDAL.CustomCode.Program;
using FrameworkDAL.DTO.Project;
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.ComponentModel.DataAnnotations;
using System.Threading.Tasks;

namespace FrameworkBLL.Program
{
    public class ProgramBLL : IProgramBLL
    {
        private readonly IProgramDAL _ProgramDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public ProgramBLL(IProgramDAL ProgramDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _ProgramDAL = ProgramDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetProgram(int ProgramId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ProgramDAL.GetProgram(ProgramId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                //await _Validation.NotEmpty(ProgramDTO.ProgramCode, nameof(ProgramDTO.ProgramCode));
                await _Validation.NotEmpty(ProgramDTO.ProgramName, nameof(ProgramDTO.ProgramName));
                ProgramDTO.ProgramModifiedById = LoginDTO.UserId;
                ProgramDTO.ProgramModifiedOn = DateTime.UtcNow;

                int count = 1;
                if (ProgramDTO.ProgramId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "PROGRAM", LoginDTO);
                    ProgramDTO.ProgramId = autoNumberDTO.StartNumber;
                    ProgramDTO.ProgramCreatedById = LoginDTO.UserId;
                    ProgramDTO.ProgramCreatedOn = DateTime.UtcNow;

                    await _ProgramDAL.SaveProgram(ProgramDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {ProgramDTO.ProgramId}";
                }
                else
                {
                    await _ProgramDAL.UpdateProgram(ProgramDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {ProgramDTO.ProgramId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && ProgramDTO.ProgramId > 0)
                    await _AutoNumber.RollbackAutoNumber("PROGRAM", ProgramDTO.ProgramId, LoginDTO);

                throw;
            }
        }

        public async Task<string> DeleteProgram(int ProgramId, LoginDTO LoginDTO)
        {
            try
            {
                return await _ProgramDAL.DeleteProgram(ProgramId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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