using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Input;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using KGIS.Framework.Maps;
using KGIS.Framework.Platform;
using KGIS.Framework.Utils;
using KGIS.Framework.Utils.Helper;
using Kingo.Plugin.EngineEditor.helper;

namespace Kingo.Plugin.EngineEditor.Views
{
    /// <summary>
    /// FrmAttribureEdit.xaml 的交互逻辑
    /// </summary>
    public partial class FrmMerge :Window
    {
        public FrmMerge()
        {
            InitializeComponent();
        }
        List<DataSource> groupList;
        IEnumFeature features = null;
        public IHookHelper m_hookHelper;
        public bool IsPromptAgain = true;
        public void BindData()
        {
            gridData.ItemsSource = null;
            IMap map = MapsManager.Instance.MapService.getAxMapControl().ActiveView.FocusMap;
            Dictionary<string, List<IFeature>> SelectedFeature = GetSelectedFeaturesDic(map);

            groupList = new List<DataSource>();
            if (SelectedFeature.Keys.Count > 1)
            {
                MessageHelper.ShowTips("请选择单图层的要素进行合并操作！");
                return;
            }
            else
            {
                foreach (string key in SelectedFeature.Keys)
                {
                    txtConten.Text = SelectedFeature[key].Count + "个要素";
                    foreach (IFeature f in SelectedFeature[key])
                    {
                        DataSource datasource = new DataSource();
                        datasource.FID = f.get_Value(f.Fields.FindField(f.Class.OIDFieldName)).ToString();
                        datasource.feature = f;
                        groupList.Add(datasource);
                    }
                }
                gridData.ItemsSource = groupList;
            }

        }
        public static Dictionary<string, List<IFeature>> GetSelectedFeaturesDic(IMap map, esriGeometryType geoType = esriGeometryType.esriGeometryAny)
        {
            if (map == null)
                return null;
            IEnumFeature enumFeature = map.FeatureSelection as IEnumFeature;
            if (enumFeature == null)
                return null;
            Dictionary<string, List<IFeature>> geoList = new Dictionary<string, List<IFeature>>();
            IFeature feart = enumFeature.Next();
            while (feart != null)
            {
                if (feart.Shape != null && !feart.Shape.IsEmpty && (geoType == esriGeometryType.esriGeometryAny || feart.Shape.GeometryType == geoType))
                {
                    IDataset dataset = feart.Table as IDataset;
                    if (dataset != null)
                    {
                        if (geoList.ContainsKey(dataset.BrowseName))
                        {
                            geoList[dataset.BrowseName].Add(feart);
                        }
                        else
                        {
                            geoList.Add(dataset.BrowseName, new List<IFeature>() { feart });
                        }
                    }
                }
                feart = enumFeature.Next();
            }
            return geoList;
        }
        /// <summary>
        /// 点击定位
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void gridFileInfo_MouseDown(object sender, MouseButtonEventArgs e)
        {
            DataSource item = gridData.SelectedItem as DataSource;
            if (item != null && item.feature != null)
            {
                IFeature f = item.feature as IFeature;
                IFillSymbol fillSymbol = new SimpleFillSymbolClass();
                fillSymbol.Color = new ESRI.ArcGIS.Display.RgbColorClass() { Red = 0, Green = 0, Blue = 255 };
                MapsManager.Instance.MapService.FlashShape((m_hookHelper.Hook as IMapControlDefault),f.ShapeCopy, 2);
            }
        }
        /// <summary>
        /// 合并
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnOK_Click(object sender, RoutedEventArgs e)
        {
            if (groupList == null || groupList.Count < 2)
            {
                MessageHelper.ShowTips("请选择合并的要素！");
                return;
            }
            IEngineEditor m_editor = new EngineEditorClass();
            m_editor.StartOperation();
            try
            {
                IFeatureLayer featureLayer = (m_editor as EngineEditorClass).TargetLayer as IFeatureLayer;

                IDataset dataset = featureLayer.FeatureClass as IDataset;
                string areapath = SysAppPath.GetAreaUpdateConfigPath();
                string mjField = string.Empty;
                if(!string.IsNullOrWhiteSpace(areapath) && System.IO.File.Exists(areapath))
                 mjField = AreaConfigHelper.GetAreaPropertyByLayerName(dataset.Name);
                DataSource item = gridData.SelectedItem as DataSource;
                IGeometry geo = null;
                foreach (DataSource data in groupList)
                {
                    if (geo == null)
                    {
                        geo = data.feature.ShapeCopy;
                    }
                    else
                    {
                        if (geo.GeometryType == esriGeometryType.esriGeometryPoint)
                        {
                            MessageHelper.ShowTips("点要素不能进行合并！");
                            throw new Exception("点要素不能进行合并");
                        }
                        if (!geo.IsEmpty && !data.feature.ShapeCopy.IsEmpty && geo.GeometryType == data.feature.ShapeCopy.GeometryType)
                        {
                            ITopologicalOperator topOp = geo as ITopologicalOperator;
                            topOp.Simplify();
                            IGeometry geometry = data.feature.ShapeCopy;
                            (geometry as ITopologicalOperator).Simplify();
                            geo = topOp.Union(geometry);
                        }
                    }
                }
                //增加提示框原因，如果提示框选择否，再继续点合并会导致删除异常，所以原删除操作移至此处
                foreach (DataSource data in groupList)
                {
                    if (data.feature.OID != item.feature.OID)
                    {
                        data.feature.Delete();
                    }
                }
                item.feature.Shape = geo;
                if (!string.IsNullOrWhiteSpace(mjField))
                {
                    int mjIndex = item.feature.Fields.FindField(mjField);
                    if (mjIndex > -1) {
                        IArea area = item.feature.ShapeCopy as IArea;
                        double mj = area.Area;
                        if (dataset.Name == "LSYD")
                        {
                            mj = mj * 0.0001;
                        }
                        mj = Math.Round(mj, 2);
                        item.feature.Value[mjIndex] = mj;
                    }
                }
                item.feature.Store();
                if (m_editor.Map.SelectionCount > 0)
                {
                    m_editor.Map.ClearSelection();
                }
                m_editor.StopOperation("合并要素");
                m_hookHelper.ActiveView.Refresh();
                this.Close();
            }
            catch (Exception ex)
            {
                m_editor.AbortOperation();
                LogAPI.Debug(ex);
            }

        }

        public class DataSource
        {
            public string FID { get; set; }
            public IFeature feature { get; set; }
        }
    }

}