using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.QueryExecutor;
using GB5Shared.Resource.GB5Solution;
using GB5Shared.Resource.Response;
using GB5Shared.ResponseStandard;
using GB5Shared.Validation;

using MMDAL.DTO.Terms;

using MMDAL.Query.Terms;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace MMDAL.CustomCode.Terms
{
    public class TermsDAL : ITermsDAL
    {

        private readonly IQueryExecutor _QueryExecutor;
        private readonly IValidation _Validation;
        public TermsDAL(IQueryExecutor QueryExecutor, IValidation Validation)
        {
            _QueryExecutor = QueryExecutor;
            _Validation = Validation;
        }
        public async Task<string> DeleteTerms(int TermsId, LoginDTO LoginDTO)
        {
            try
            {
                string Sql = TermsQB.DELETE_TERMS;
                var parameters = new { TermsId = TermsId };
                int result = await _QueryExecutor.ExecuteAsync(LoginDTO, Sql, parameters);

                if (result > 0)
                {
                    return MMResource.DeletedSuccessfully;
                }
                else
                {
                    return MMResource.NotFoundToDelete;
                }
            }
            catch (Exception ex)
            {
                throw new Exception(MMResource.DeleteFailed, ex);
            }
        }

        public async Task<string> GetSelectListTerms(CriteriaDTO CriteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                string sql = TermsQB.GET_SELECTLIST_TERMS;

                string section = GetCriteriaStringValue(CriteriaDTO, "Section", "");
              
                string description = GetCriteriaStringValue(CriteriaDTO, "Description", "");

                var parameters = new
                {
                    section = section,
                   
                    description = description
                };

                IEnumerable<TermsPicklistDTO> result = await _QueryExecutor.QueryAsync<TermsPicklistDTO>(LoginDTO, sql, parameters);
                return JsonConvert.SerializeObject(result);
            }
            catch (Exception ex)
            {
                throw new Exception(MMResource.SelectListFailed, ex);
            }
        }
        private string GetCriteriaStringValue(CriteriaDTO criteriaDTO, string fieldName, string defaultValue)
        {
            try
            {
                var attr = criteriaDTO?.SectionCriteriaList?
                    .SelectMany(s => s.AttributesCriteriaList)
                    .FirstOrDefault(a => a.FieldName == fieldName);

                if (attr?.FieldValue is System.Text.Json.JsonElement je)
                    return je.ValueKind == System.Text.Json.JsonValueKind.String
                           ? je.GetString() ?? defaultValue
                           : defaultValue;

                return attr != null ? Convert.ToString(attr.FieldValue) ?? defaultValue : defaultValue;
            }
            catch { return defaultValue; }
        }

        public async Task<string> GetTerms(int TermsId, LoginDTO LoginDTO)
        {

            try
            {
                string Sql = TermsQB.GET_TERMS;
                var parameters = new { TermsId = TermsId };
                TermsDTO termsDTO = await _QueryExecutor.QuerySingleAsync<TermsDTO>(LoginDTO, Sql, parameters);
                return JsonConvert.SerializeObject(termsDTO);

            }
            catch (Exception)
            {
                throw;
            }


        }

        public async Task<int> SaveTerms(TermsDTO TermsDTO, LoginDTO LoginDTO)
        {
            try
            {
                return await _QueryExecutor.ExecuteAsync(
                    LoginDTO,
                    TermsQB.SAVE_TERMS,
                    TermsDTO
                );
            }
            catch (Exception ex)
            {
                string error = await _Validation.HandleException(ex, $"{ErrorResponse.SaveErrorMessage}");
                throw new Exception(error);
            }
        }

        public async Task<int> UpdateTerms(TermsDTO TermsDTO, LoginDTO LoginDTO)
        {
            try
            {
                return await _QueryExecutor.ExecuteAsync(
                    LoginDTO,
                   TermsQB.SAVE_TERMS,
                    TermsDTO
                );
            }
            catch (Exception ex)
            {
                string error = await _Validation.HandleException(ex, $"{ErrorResponse.UpdateErrorMessage}");
                throw new Exception(error);
            }
        }
    }
}