using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using KGIS.Framework.Platform;
using KGIS.Framework.Utils;
using KGIS.Framework.Maps;
using Kingo.PluginServiceInterface;

namespace Kingo.Plugin.EngineEditor.helper
{
   public class FeatureBSMHelper
    {

        public static string GetNewBSM(List<IFeatureClass> fcList, string cdm = "")
        {
            string result = string.Empty;
            try
            {
                if (string.IsNullOrWhiteSpace(cdm))
                    cdm = "1240";
               
                int xh = 0;
                string leftStr = string.Empty;
                foreach (var item in fcList)
                {
                    string MaxBSM = GetMaxBSM(item);
                    if (MaxBSM.Length != 18)
                        continue;
                    int xh2 = Convert.ToInt32(MaxBSM.Substring(10));
                    leftStr = MaxBSM.Substring(0, 10);
                    if (xh < xh2)
                        xh = xh2;
                }
                xh++;
                if (string.IsNullOrWhiteSpace(leftStr))
                    leftStr = ((MapsManager.Instance.CurrProjectInfo as ProjectInfo) as ProjectInfo).CODE + cdm;
                result = leftStr + xh.ToString().PadLeft(8, '0');
                return result;
            }
            catch (Exception ex)
            {
                LogAPI.Debug(ex);
                return result;
            }
        }
        private static string GetMaxBSM(IFeatureClass fc)
        {
            System.Windows.Forms.Application.DoEvents();
            string BSM = string.Empty;
            try
            {
                int BSMIndex = fc.FindField("BSM");
                if (BSMIndex == -1) return BSM;

                ITable table = (ITable)fc;
                // 创建一个ITableSort接口对象
                ITableSort tableSort = new TableSortClass();
                tableSort.Table = table;
                tableSort.Fields = "BSM";
                tableSort.set_Ascending("BSM", false);
                tableSort.Sort(null);
                ICursor cursor = tableSort.Rows;
                IRow row = cursor.NextRow();
                if (row != null)
                {
                    int maxBSM = 0;
                    int currBSM = 0;
                    string BSMStr = row.Value[BSMIndex].ToString();
                    if (BSMStr.Length != 18) return BSM;
                    string subBSMStr = BSMStr.Substring(9);
                    try
                    {
                        currBSM = Convert.ToInt32(subBSMStr);
                    }
                    catch (Exception)
                    {
                        return BSM;
                    }
                    if (currBSM > maxBSM) maxBSM = currBSM;

                    if (BSMStr.Length != 18) return BSM;
                    string maxStr = maxBSM.ToString();
                    int zeroNum = 9 - maxStr.Length;
                    for (int i = 0; i < zeroNum; i++)
                    {
                        maxStr = 0 + maxStr;
                    }
                    BSM = BSMStr.Substring(0, 9) + maxStr;
                }
                return BSM;
            }
            catch (Exception ex)
            {
                LogAPI.Debug(ex);
                return BSM;
            }

        }
    }
}