using System;
using System.Collections.Generic;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using KGIS.Framework.AE;
using KGIS.Framework.EngineEditor;
using KGIS.Framework.Maps;
using KGIS.Framework.Platform;
using KGIS.Framework.Utils;
using KGIS.Framework.Utils.Helper;
using KGIS.Framework.Utils.Interface;

namespace Kingo.Plugin.EngineEditor.Commands.Tools
{
    /// <summary>
    /// 提取地类图斑到变更范围
    /// </summary>
    public class CmdWithDrawBGFW : BaseToolCmd
    {
        private EngineEditorClass editor = new EngineEditorClass();
        private IHookHelper m_hookHelper;
        private IFeatureLayer TargetLayer = null;
        public override void OnCreate(object hook)
        {
            try
            {
                base.OnCreate(hook);
                if (this.m_hookHelper == null)
                {
                    this.m_hookHelper = base.m_pHookHelper;
                }
                editor.OnStopEditing += Editor_OnStopEditing;
                base.OnCreate(hook);
            }
            catch (Exception ex)
            {
                LogAPI.Debug("提取图斑初始化OnCreate异常：" + ex.Message);
            }
        }

        public override void OnClick()
        {
            base.OnClick();
            if (editor != null && (editor as EngineEditorClass).TargetLayer != null)
                TargetLayer = (editor as EngineEditorClass).TargetLayer as IFeatureLayer;
            if (TargetLayer == null || ((IDataset)TargetLayer.FeatureClass).Name != "DLTBBG") return;//获取任务图斑图层
            (editor as EngineEditorClass).StartOperation();
            try
            {
                IFeature selectedFeature = null;
                if (m_hookHelper.FocusMap.FeatureSelection is IEnumFeature)
                {
                    IEnumFeature enumFeature = m_hookHelper.FocusMap.FeatureSelection as IEnumFeature;
                    while ((selectedFeature = enumFeature.Next()) != null)
                    {
                        if (((IDataset)selectedFeature.Class).Name != "DLTB") continue;
                        if (MessageHelper.ShowYesNoAndTips($"是否从“{((IDataset)selectedFeature.Class).Name}”图层中，提取图斑？") == System.Windows.Forms.DialogResult.Yes)
                        {
                            break;
                        }
                        else
                            selectedFeature = null;
                    }
                    if (selectedFeature == null)
                    {
                        MessageHelper.ShowTips("请选择地类图斑提取！");
                        return;
                    }
                    List<IFeature> features = FeatureAPI.Identify2(selectedFeature.ShapeCopy, TargetLayer);
                    if (features == null || features.Count == 0)
                    {
                        MessageHelper.ShowTips("当前提取地类图斑并未压盖到变更范围！");
                        return;
                    }
                    
                    // 结束事务（可选）
                    (editor as EngineEditorClass).StopOperation("提取变更范围");
                    (editor as EngineEditorClass).StopEditing(true);
                    Platform.Instance.SendMsg(new NotifyMsgPackage() { MsgType = "WithDrawTBToTreeNode", Content = selectedFeature.OID });
                    (m_hookHelper.FocusMap as IActiveView).PartialRefresh(esriViewDrawPhase.esriViewGeography, TargetLayer, null);
                    // 释放资源
                    if (selectedFeature != null)
                        System.Runtime.InteropServices.Marshal.ReleaseComObject(selectedFeature);
                    //重新开启编辑，不受保存编辑影响
                    (editor as EngineEditorClass).StartEditing((TargetLayer.FeatureClass as FeatureClass).Workspace, MapsManager.Instance.MapService.getAxMapControl().Map);
                    IEngineEditLayers pEditLayer = editor as IEngineEditLayers;
                    pEditLayer.SetTargetLayer(TargetLayer, 0);
                    MessageHelper.ShowTips("提取变更范围成功！");
                }
            }
            catch (Exception ex)
            {
                (editor as EngineEditorClass).AbortOperation();
                (editor as EngineEditorClass).StopOperation("提取任务图斑出现异常！");
                LogAPI.Debug("提取任务图斑失败：" + ex);
                MessageHelper.ShowError("提取任务图斑失败" + ex.Message);
            }
            finally
            {
                if (TargetLayer != null)
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(TargetLayer);
            }

        }

        public override bool Enabled
        {
            get
            {
                ILayer layer = (editor as EngineEditorClass).TargetLayer;
                if (editor.EditState == esriEngineEditState.esriEngineStateEditing && layer != null && (layer as IFeatureLayer).FeatureClass.ShapeType == esriGeometryType.esriGeometryPolygon)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
        }

        private void Editor_OnStopEditing(bool saveChanges)
        {
            try
            {
                (m_hookHelper.Hook as IMapControl2).CurrentTool = null;
            }
            catch (Exception ex)
            {
                LogAPI.Debug(ex);
            }
        }

    }
}