using ESRI.ArcGIS.Controls;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using ESRI.ArcGIS.Geodatabase;
using KGIS.Framework.Utils.Helper;
using KGIS.Framework.Utils;
using ESRI.ArcGIS.Carto;
using System.Text.RegularExpressions;
using ESRI.ArcGIS.Geometry;
using Kingo.PluginServiceInterface.Helper;

namespace Kingo.Plugin.EngineEditor.Views.EditingEdit
{
    /// <summary>
    /// FrmClip.xaml 的交互逻辑
    /// </summary>
    public partial class FrmClip : Window
    {
        public IHookHelper m_hookHelper;
        private EngineEditorClass m_editor = null;
        public FrmClip()
        {
            InitializeComponent();
        }

        private void BtnCancel_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                this.Close();
            }
            catch (Exception ex)
            {
                LogAPI.Debug("关闭裁减窗口异常：" + ex);
            }
        }

        private void btnOK_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                double buffer = 0.0001;
                if (!double.TryParse(txtBuffer.Text, out buffer))
                {
                    MessageHelper.Show("缓冲距离输入不合法！");
                    return;
                }
                Dictionary<string, List<IFeature>> SelectedFeature = LayerHelper.GetSelectedFeaturesDic(m_hookHelper.FocusMap);
                if (SelectedFeature.Count <= 0)
                {
                    MessageHelper.Show("请选择用于裁减的要素！");
                    return;
                }
                if (SelectedFeature.Keys.Count > 1)
                {
                    MessageHelper.Show("请选择单图层的要素进行裁减！");
                    return;
                }
                foreach (var item in SelectedFeature)
                {
                    if (item.Value.Count != 1)
                    {
                        MessageHelper.Show("请选择单个裁减要素！");
                        return;
                    }
                    Clip(item.Value[0], buffer);
                    break;
                }
            }
            catch (Exception ex)
            {
                LogAPI.Debug("裁减异常：" + ex);
                MessageHelper.Show("裁减异常：" + ex.Message);
            }
        }

        private void Clip(IFeature feature, double buffer)
        {
            try
            {
                if (m_editor == null)
                {
                    m_editor = new EngineEditorClass();
                }
                IFeatureLayer featureLayer = m_editor.TargetLayer as IFeatureLayer;
                if (featureLayer == null)
                {
                    MessageHelper.Show("未找到编辑的目标图层！");
                    return;
                }
                IGeometry clipGeometry = feature.ShapeCopy;
                if (buffer > 0)
                {
                    ITopologicalOperator pTopo = clipGeometry as ITopologicalOperator;
                    clipGeometry = pTopo.Buffer(buffer);
                }

                List<IFeature> lstFeature = KGIS.Framework.AE.FeatureAPI.Identify(clipGeometry, featureLayer);
                if (lstFeature.Count < 1)
                {
                    MessageHelper.Show("所选裁减要素与编辑目标图层不存在相交，跳过裁减！");
                    return;
                }
                foreach (IFeature item in lstFeature)
                {
                    m_editor.StartOperation();
                    if (radioSaveIntersect.IsChecked == true)
                    {
                        item.Shape = KGIS.Framework.AE.FeatureAPI.InterSect(item.ShapeCopy, clipGeometry);
                    }
                    else
                    {
                        item.Shape = KGIS.Framework.AE.FeatureAPI.Difference(item.ShapeCopy, clipGeometry);
                    }
                    item.Store();
                    m_editor.StopOperation("裁减要素");
                }
                this.Close();
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                m_hookHelper.ActiveView.Refresh();
            }
        }

        private void TxtBuffer_PreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            // 只允许输入数字和小数点
            Regex regex = new Regex("[^0-9.]");
            e.Handled = regex.IsMatch(e.Text);
            if (!e.Handled)
            {
                // 获取TextBox当前的文本内容和新输入的字符
                string text = txtBuffer.Text.Insert(txtBuffer.SelectionStart, e.Text);

                // 判断文本是否符合最多四位小数点的格式
                decimal value;
                if (decimal.TryParse(text, out value))
                {
                    int decimalPlaces = BitConverter.GetBytes(decimal.GetBits(value)[3])[2];

                    // 最多四位小数点
                    if (decimalPlaces > 4)
                    {
                        e.Handled = true;
                    }
                }
                else
                {
                    e.Handled = true;
                }
            }
        }
    }
}