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

namespace FrameworkBLL.MailTemplate
{
    public class MailTemplateBLL : IMailTemplateBLL
    {
        private readonly IMailTemplateDAL _MailTemplateDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public MailTemplateBLL(IMailTemplateDAL MailTemplateDAL, AutoNumber AutoNumber,IValidation Validation)
        {
            _MailTemplateDAL = MailTemplateDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<MailTemplateDTO> GetMailTemplate(int MailTemplateId, LoginDTO LoginDTO)
        {
            try
            {
                return await _MailTemplateDAL.GetMailTemplate(MailTemplateId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

            try
            {
                await _Validation.NotEmpty(MailTemplateDTO.MailTemplateName, nameof(MailTemplateDTO.MailTemplateName));
                await _Validation.NotEmpty(MailTemplateDTO.MailTemplateCode, nameof(MailTemplateDTO.MailTemplateCode));
                MailTemplateDTO.MailTemplateModifiedById = LoginDTO.UserId;
                MailTemplateDTO.MailTemplateModifiedOn = DateTime.UtcNow;

                int initialId = MailTemplateDTO.MailTemplateId;
                int count = 1 + initialId;
                if (initialId == 0)
                {
                    AutoNumberDTO AutoNumberDTO = await _AutoNumber.GetNumberAsync(1, "MAILTEMPLATE", LoginDTO);
                    MailTemplateDTO.MailTemplateId = AutoNumberDTO.StartNumber;
                    MailTemplateDTO.MailTemplateCreatedById = LoginDTO.UserId;
                    MailTemplateDTO.MailTemplateCreatedOn = DateTime.UtcNow;

                    await _MailTemplateDAL.SaveMailTemplate(MailTemplateDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {MailTemplateDTO.MailTemplateId}";
                }
                else
                {
                    await _MailTemplateDAL.UpdateMailTemplate(MailTemplateDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {MailTemplateDTO.MailTemplateId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && MailTemplateDTO.MailTemplateId > 0)
                    await _AutoNumber.RollbackAutoNumber("MAILTEMPLATE", MailTemplateDTO.MailTemplateId, LoginDTO);

                throw;
            }
        }


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

        public async Task<string> DeleteMailTemplate(int MailTemplateId, LoginDTO LoginDTO)
        {
            try
            {
                return await _MailTemplateDAL.DeleteMailTemplate(MailTemplateId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<MailTemplateDTO> GetMailTemplateByCode(string mailTemplateCode, LoginDTO loginDTO)
        {
            try
            {
                return await _MailTemplateDAL.GetMailTemplateByCode(mailTemplateCode, loginDTO).ConfigureAwait(false);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}