using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using AccountsDAL.CustomCode.Narration;
using AccountsDAL.DTO.Narration;
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 AccountsBLL.Narration
{
    public class NarrationBLL : INarrationBLL
    {

        private readonly INarrationDAL _NarrationDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;
        public NarrationBLL(INarrationDAL INarrationDAL, AutoNumber AutoNumber, IValidation validation)
        {
            _NarrationDAL = INarrationDAL;
            _AutoNumber = AutoNumber;
            _Validation = validation;
        }

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


        public async Task<NarrationDTO> GetNarration(int NarrationId, LoginDTO LoginDTO)
        {
            try
            {
                return await _NarrationDAL.GetNarration(NarrationId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(NarrationDTO.NarrationName, nameof(NarrationDTO.NarrationName));
                NarrationDTO.NarrationModifiedById = LoginDTO.UserId;
                NarrationDTO.NarrationModifiedOn = DateTime.UtcNow;

                int InitialId = NarrationDTO.NarrationId;
                int count = 1 + InitialId;
                if (InitialId == 0)
                {
                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(count, "NARRATION", LoginDTO);
                    NarrationDTO.NarrationId = AutoNumberDTO.StartNumber;
                    NarrationDTO.NarrationCreatedById = LoginDTO.UserId;
                    NarrationDTO.NarrationCreatedOn = DateTime.UtcNow;

                    await _NarrationDAL.SaveNarration(NarrationDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {NarrationDTO.NarrationId}";
                }
                else
                {
                    await _NarrationDAL.UpdateNarration(NarrationDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {NarrationDTO.NarrationId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && NarrationDTO.NarrationId > 0)
                    await _AutoNumber.RollbackAutoNumber("NARRATION", NarrationDTO.NarrationId, LoginDTO);

                throw;
            }
        }


        public async Task<string> DeleteNarration(int NarrationId, LoginDTO LoginDTO)
        {
            try
            {
                return await _NarrationDAL.DeleteNarration(NarrationId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}