using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using AdminDAL.DTO.Reason;
using AdminDAL.Query.Reason;
using Dapper;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.QueryExecutor;
using GB5Shared.Resource.Response;
using GB5Shared.ResponseStandard;
using GB5Shared.Validation;
using Microsoft.VisualBasic;
using Newtonsoft.Json;

namespace AdminDAL.CustomCode.Reason
{
    public class ReasonDAL : IReasonDAL
    {
        private readonly IQueryExecutor _QueryExecutor;
        private readonly IValidation _Validation;

        public ReasonDAL(IQueryExecutor IQueryExecutor, IValidation IValidation)
        {
            _QueryExecutor = IQueryExecutor;
            _Validation = IValidation;
        }

        public async Task<string> GetReason(int ReasonId, LoginDTO LoginDTO)
        {
            string Json = "";
            try
            {
                string sql = ReasonQB.GET_REASON;
                var parameters = new { reasonid = ReasonId };
                ReasonDTO ReasonDTOs = await _QueryExecutor.QuerySingleAsync<ReasonDTO>(LoginDTO, sql, parameters);
                Json = JsonConvert.SerializeObject(ReasonDTOs);
                return Json;
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                Json = null;
            }
        }

        public async Task<string> GetSelectListReason(CriteriaDTO CriteriaDTO, LoginDTO LoginDTO)
        {
            try
            {
                string SQL = ReasonQB.GET_SELECTLIST_REASON;
                var parameters = new DynamicParameters();
                int? reasonTypeId = GetReasonTypeId(CriteriaDTO);
                if (reasonTypeId.HasValue)
                {
                    SQL += " WHERE REASONTYPEID = @ReasonTypeId";
                    parameters.Add("@ReasonTypeId", reasonTypeId.Value);
                }
                var Result = await _QueryExecutor.QueryAsync<ReasonPicklistDTO>(LoginDTO, SQL, parameters);
                string Json = JsonConvert.SerializeObject(Result);
                return Json;
            }
            catch (Exception)
            {
                throw;
            }
        }

        private int? GetReasonTypeId(CriteriaDTO criteria)
        {
            var attr = criteria?.SectionCriteriaList?
                .SelectMany(s => s.AttributesCriteriaList)
                .FirstOrDefault(a => a.FieldName == "ReasonType.Id");

            if (attr?.FieldValue == null)
                return null;

            if (attr.FieldValue is JsonElement jsonElement &&
                jsonElement.ValueKind == JsonValueKind.Number)
            {
                return jsonElement.GetInt32();
            }

            return null;
        }

        public async Task<int> SaveReason(ReasonDTO ReasonDTO, LoginDTO LoginDTO)
        {
            try
            {
                string Sql = ReasonQB.SAVE_REASON;
                return await _QueryExecutor.ExecuteAsync(LoginDTO, Sql, ReasonDTO);
            }
            catch (Exception ex)
            {
                string Error = await _Validation.HandleException(ex, $"{ErrorResponse.SaveErrorMessage}");
                throw new Exception(Error);
            }
        }

        public async Task<int> UpdateReason(ReasonDTO ReasonDTO, LoginDTO LoginDTO)
        {
            try
            {
                string Sql = ReasonQB.UPDATE_REASON;
                return await _QueryExecutor.ExecuteAsync(LoginDTO, Sql, ReasonDTO);
            }
            catch (Exception ex)
            {
                string Error = await _Validation.HandleException(ex, $"{ErrorResponse.UpdateErrorMessage}");
                throw new Exception(Error);
            }
        }

        public async Task<string> DeleteReason(int ReasonId, LoginDTO LoginDTO)
        {
            try
            {
                string Sql = ReasonQB.DELETE_REASON;
                var Parameters = new { reasonid = ReasonId };
                int result = await _QueryExecutor.ExecuteAsync(LoginDTO, Sql, Parameters);

                if (result > 0)
                {
                    return $"{SuccessResponse.DeleteSuccessMessage}";
                }
                else
                {
                    return $"{ErrorResponse.DeleteNotFoundMessage}";
                }
            }
            catch (Exception ex)
            {
                string Error = await _Validation.HandleException(ex, $"{ErrorResponse.DeleteErrorMessage}");
                throw new Exception(Error);
            }
        }
    }
}