using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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;
using MarketingDAL.CustomCode.LeadSource;
using MarketingDAL.DTO.LeadSource;

namespace MarketingBLL.LeadSource
{
    public class LeadSourceBLL : ILeadSourceBLL
    {
        private readonly ILeadSourceDAL _LeadSourceDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;


        public LeadSourceBLL(ILeadSourceDAL LeadSourceDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _LeadSourceDAL = LeadSourceDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetLeadSource(int LeadSourceId, LoginDTO LoginDTO)
        {
            try
            {
                return await _LeadSourceDAL.GetLeadSource(LeadSourceId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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

        public async Task<string> SaveLeadSource(LeadSourceDTO LeadSourceDTO, LoginDTO LoginDTO)
        {
            if (LeadSourceDTO == null)
                throw new ArgumentNullException(nameof(LeadSourceDTO));
            AutoNumberDTO? autoNumberDTO = null;
            try
            {
                await _Validation.NotEmpty(LeadSourceDTO.LeadSourceCode, nameof(LeadSourceDTO.LeadSourceCode));
                await _Validation.NotEmpty(LeadSourceDTO.LeadSourceName, nameof(LeadSourceDTO.LeadSourceName));
                LeadSourceDTO.LeadSourceModifiedById = LoginDTO.UserId;
                LeadSourceDTO.LeadSourceModifiedOn = DateTime.UtcNow;
                bool isNew = LeadSourceDTO.LeadSourceId == 0;
                if (isNew)
                {
                    int detailCount = LeadSourceDTO.LeadSourceDetailArray?.Count ?? 0;
                    int totalRequired = 1 + detailCount;
                    autoNumberDTO = await _AutoNumber.GetNumberAsync(totalRequired, "LEADSOURCE", LoginDTO);
                    int nextId = autoNumberDTO.StartNumber;
                    LeadSourceDTO.LeadSourceId = nextId++;
                    LeadSourceDTO.LeadSourceCreatedById = LoginDTO.UserId;
                    LeadSourceDTO.LeadSourceCreatedOn = DateTime.UtcNow;
                    if (LeadSourceDTO.LeadSourceDetailArray?.Count > 0)
                    {
                        foreach (var detail in LeadSourceDTO.LeadSourceDetailArray)
                        {
                            detail.LeadSourceDetailId = nextId++;
                            detail.LeadSourceId = LeadSourceDTO.LeadSourceId;
                        }
                    }
                    await _LeadSourceDAL.SaveLeadSource(LeadSourceDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccesfullyCode_Name} {LeadSourceDTO.LeadSourceCode}&{LeadSourceDTO.LeadSourceName}";
                }
                else
                {
                    await _LeadSourceDAL.UpdateLeadSource(LeadSourceDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessfullyCode_Name} {LeadSourceDTO.LeadSourceCode}&{LeadSourceDTO.LeadSourceName}";
                }
            }
            catch
            {
                if (autoNumberDTO != null && LeadSourceDTO.LeadSourceId > 0)
                {
                    await _AutoNumber.RollbackAutoNumber("LEADSOURCE", autoNumberDTO.StartNumber, LoginDTO);
                }
                throw;
            }
        }




        public async Task<string> DeleteLeadSource(int LeadSourceId, LoginDTO LoginDTO)
        {
            try
            {
                var detailsResult = await _LeadSourceDAL.DeleteLeadSourceDetail(LeadSourceId, LoginDTO);

                if (detailsResult <= 0)
                    return $"{ErrorResponse.DeleteNotFoundMessage}";

                var parentResult = await _LeadSourceDAL.DeleteLeadSource(LeadSourceId, LoginDTO);

                if (parentResult <= 0)
                    return $"{ErrorResponse.DeleteNotFoundMessage}";

                return $"{SuccessResponse.DeleteSuccessMessage}";
            }
            catch (Exception ex)
            {
                throw new Exception($"Error Deleting LeadSource ID {LeadSourceId}", ex);
            }
        }
    }
}