using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using AdminDAL.CustomCode.Draft;
using AdminDAL.DTO.Draft;
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;

namespace AdminBLL.Draft
{
    public class DraftBLL : IDraftBLL
    {
        private readonly IDraftDAL _DraftDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public DraftBLL(IDraftDAL IDraftDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _DraftDAL = IDraftDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetDraft(int DraftId, LoginDTO LoginDTO)
        {
            try
            {
                return await _DraftDAL.GetDraft(DraftId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

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

            try
            {
                DraftDTO.DraftModifiedById = LoginDTO.UserId;
                DraftDTO.DraftModifiedOn = DateTime.UtcNow;
                DraftDTO.DraftDate = DateTime.UtcNow;
                DraftDTO.DraftReferenceDate = DateTime.UtcNow;

                int count = 1;
                if (DraftDTO.DraftId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "DRAFT", LoginDTO);
                    DraftDTO.DraftId = autoNumberDTO.StartNumber;
                    DraftDTO.DraftCreatedById = LoginDTO.UserId;
                    DraftDTO.DraftCreatedOn = DateTime.UtcNow;

                    await _DraftDAL.SaveDraft(DraftDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {DraftDTO.DraftId}";
                }
                else
                {
                    await _DraftDAL.UpdateDraft(DraftDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {DraftDTO.DraftId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && DraftDTO.DraftId > 0)
                    await _AutoNumber.RollbackAutoNumber("DRAFT", DraftDTO.DraftId, LoginDTO);

                throw;
            }
        }

        public async Task<string> DeleteDraft(int DraftId, LoginDTO LoginDTO)
        {
            try
            {
                return await _DraftDAL.DeleteDraft(DraftId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}