using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using FrameworkDAL.CustomCode.CriteriaConfig;
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;

namespace FrameworkBLL.CriteriaConfig
{
    public class CriteriaConfigBLL : ICriteriaConfigBLL
    {
        private readonly ICriteriaConfigDAL _CriteriaConfigDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public CriteriaConfigBLL(ICriteriaConfigDAL ICriteriaConfigDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _CriteriaConfigDAL = ICriteriaConfigDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetCriteriaConfig(int CriteriaConfigId, LoginDTO LoginDTO)
        {
            try
            {
                return await _CriteriaConfigDAL.GetCriteriaConfig(CriteriaConfigId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> SaveCriteriaConfig(CriteriaConfigDTO CriteriaConfigDTO, LoginDTO LoginDTO)
        {
            string message = "";
            var currentTime = DateTime.UtcNow;
            if (CriteriaConfigDTO == null) throw new ArgumentNullException(nameof(CriteriaConfigDTO));
            AutoNumberDTO? autoNumberDTO = null;

            try
            {
                await _Validation.NotEmpty(CriteriaConfigDTO.CriteriaConfigName, nameof(CriteriaConfigDTO.CriteriaConfigName));
                CriteriaConfigDTO.CriteriaConfigModifiedById = LoginDTO.UserId;
                CriteriaConfigDTO.CriteriaConfigModifiedOn = currentTime;

                int count = 1;
                if (CriteriaConfigDTO.CriteriaConfigId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "CRITERIACONFIG", LoginDTO);
                    CriteriaConfigDTO.CriteriaConfigId = autoNumberDTO.StartNumber;

                    int nextId = CriteriaConfigDTO.CriteriaConfigId + 1;
                    if (CriteriaConfigDTO.CriteriaConfigSectionArray != null)
                    {
                        foreach (var section in CriteriaConfigDTO.CriteriaConfigSectionArray)
                        {
                            section.CriteriaConfigSectionId = nextId++;
                            section.CriteriaConfigId = CriteriaConfigDTO.CriteriaConfigId;
                            section.CriteriaConfigSectionCreatedById = LoginDTO.UserId;
                            section.CriteriaConfigSectionCreatedOn = currentTime;
                            section.CriteriaConfigSectionModifiedById = LoginDTO.UserId;
                            section.CriteriaConfigSectionModifiedOn = currentTime;
                            if (section.CriteriaConfigAttributeArray != null)
                            {
                                foreach (var attribute in section.CriteriaConfigAttributeArray)
                                {
                                    attribute.CriteriaConfigAttributeId = nextId++;
                                    attribute.CriteriaSectionId = section.CriteriaConfigSectionId;
                                }
                            }
                        }
                    }

                    CriteriaConfigDTO.CriteriaConfigCreatedById = LoginDTO.UserId;
                    CriteriaConfigDTO.CriteriaConfigCreatedOn = currentTime;

                    await _CriteriaConfigDAL.SaveCriteriaConfig(CriteriaConfigDTO, LoginDTO);
                    message = $"{SuccessResponse.SaveSuccessMessage} {CriteriaConfigDTO.CriteriaConfigId}";
                }
                else
                {
                    if (CriteriaConfigDTO.CriteriaConfigSectionArray != null)
                    {
                        foreach (var section in CriteriaConfigDTO.CriteriaConfigSectionArray)
                        {
                            section.CriteriaConfigSectionModifiedById = LoginDTO.UserId;
                            section.CriteriaConfigSectionModifiedOn = currentTime;
                            if (section.CriteriaConfigSectionId == 0)
                            {
                                section.CriteriaConfigSectionCreatedById = LoginDTO.UserId;
                                section.CriteriaConfigSectionCreatedOn = currentTime;
                            }
                        }
                    }

                    await _CriteriaConfigDAL.UpdateCriteriaConfig(CriteriaConfigDTO, LoginDTO);
                    message = $"{SuccessResponse.UpdateSuccessMessage} {CriteriaConfigDTO.CriteriaConfigId}";
                }
                if (CriteriaConfigDTO.CriteriaConfigIsDefault == 0 && CriteriaConfigDTO.UserVsPortletId > 0)
                {
                    await _CriteriaConfigDAL.UpdateUserVsPortlet(CriteriaConfigDTO.CriteriaConfigId, CriteriaConfigDTO.UserVsPortletId, LoginDTO);
                }
                return message;
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && CriteriaConfigDTO.CriteriaConfigId > 0)
                {
                    await _AutoNumber.RollbackAutoNumber("CRITERIACONFIG", CriteriaConfigDTO.CriteriaConfigId, LoginDTO);
                }
                throw;
            }
        }

        public async Task<Result<string>> DeleteCriteriaConfig(int CriteriaConfigId, LoginDTO LoginDTO)
        {
            try
            {
                return await _CriteriaConfigDAL.DeleteCriteriaConfig(CriteriaConfigId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

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