using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using GrxCAD.ApplicationServices;
using GrxCAD.DatabaseServices;
using GrxCAD.EditorInput;
using System.Collections;
using GrxCAD.Geometry;

namespace HCTools
{
    public struct points
    {
        public Point3d pt;
        public ObjectId objID;
    }

    class ElePtCheck
    {
        public static int blc;//比例尺
        public static string EleLayerName;//高程点图层名

        public double radius;//半径
        //public double length;//搜索半径

        int j = 0;//记录错误点个数

        //存放所有高程点数组
        public List<points> pointarrlist = new List<points>();
        //存放有问题的高程点数组
        public List<points> errorpointarrlist = new List<points>();



        /// <summary>
        /// 检查错误的高程点并画圆标记
        /// </summary>
        public void pointcheck()
        {
            double flagradius = 4.0 * blc / 1000;//画圆标记半径

            if (blc == 500)
            {
                radius = 1.5;
            }
            else if (blc == 1000)
            {
                radius = 2.5;
            }
            else if (blc == 2000)
            {
                radius = 4;
            }
            else if (blc == 5000)
            {
                radius = 10.5;
            }
            //外切圆半径
            //length = radius * Math.Pow(2, 0.5);


            //检查高程点与注记是否一致或为零
            check();

            //创建存放错误点的图层
            LayerControl layerscontrol = new LayerControl();
            string layname = "错误高程点";
            if (!layerscontrol.haslayername(layname))
            {
                colorgb col = new colorgb(255, 0, 255);
                layerscontrol.creatlayer(layname, col);
                layerscontrol.movelayertofront(layname);
            }
            else
                layerscontrol.movelayertofront(layname);

            //创建错误点标记的图层
            LayerControl layerscontrol1 = new LayerControl();
            string layname1 = "错误高程点标记";
            if (!layerscontrol1.haslayername(layname1))
            {
                colorgb col = new colorgb(0, 225, 255);
                layerscontrol1.creatlayer(layname1, col);
                layerscontrol1.movelayertofront(layname1);
            }
            else
                layerscontrol1.movelayertofront(layname1);

            Database database = HostApplicationServices.WorkingDatabase;
            Document doc = Application.DocumentManager.MdiActiveDocument;
            Editor editor = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
            using (Transaction traction = database.TransactionManager.StartTransaction())
            {
                DocumentLock documentlock = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument();
                BlockTable blocktable = traction.GetObject(database.BlockTableId,OpenMode.ForWrite) as BlockTable;
                
                for (int i = 0; i < errorpointarrlist.Count; i++)
                {
                    BasicFunction functions = new BasicFunction();
                    BlockReference blr= traction.GetObject(errorpointarrlist[i].objID,OpenMode.ForWrite)as BlockReference;
                    blr.Layer = "错误高程点";
                    functions.makeflag(errorpointarrlist[i].pt.X, errorpointarrlist[i].pt.Y, 0, flagradius, "错误高程点标记");

                    Point3d p1 = new Point3d(errorpointarrlist[i].pt.X - radius, errorpointarrlist[i].pt.Y - radius, 0);
                    Point3d p2 = new Point3d(errorpointarrlist[i].pt.X + radius, errorpointarrlist[i].pt.Y + radius, 0);
                    TypedValue[] typedvalue = new TypedValue[2];

                    typedvalue.SetValue(new TypedValue((int)DxfCode.Start, "Text"), 0);
                    typedvalue.SetValue(new TypedValue((int)DxfCode.LayerName, EleLayerName), 1);

                    SelectionFilter filter = new SelectionFilter(typedvalue);
                    PromptSelectionResult psr = editor.SelectCrossingWindow(p1, p2, filter);

                    if (psr.Status == PromptStatus.OK)
                    {
                        SelectionSet set = psr.Value;
                        ObjectId[] objs = new ObjectId[set.Count];
                        objs = set.GetObjectIds();
                        for (int ii = 0; ii < objs.Length; ii++)
                        {
                            DBText Text = (DBText)traction.GetObject(objs[ii], OpenMode.ForWrite);
                            Text.Layer = "错误高程点";
                        }
                    }
                }

                traction.Commit();
                documentlock.Dispose();
                traction.Dispose();
            }

            editor.WriteMessage("\n共有" + j + "处错误");
        }

        /// <summary>
        /// 检查高程点与注记是否一致或为零
        /// </summary>
        private void check()
        {
            string LayerName = EleLayerName;
            getptInLayer(LayerName);

            if (pointarrlist == null)
                return;
            Editor editor = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
            for (int i = 0; i < pointarrlist.Count; i++)
            {
                Point3d pt = pointarrlist[i].pt;
                string getword = GetTxt(pt, LayerName);
                if (pt.Z == 0)
                {
                    errorpointarrlist.Add(pointarrlist[i]);
                    j++;
                }
                else if (!getword.Contains('.') || getword.Contains(".0"))
                {
                    errorpointarrlist.Add(pointarrlist[i]);
                    j++;
                }
                else
                {
                    if (pt.Z.ToString("f1") == getword && pt.Z % (blc / 1000) != 0)
                    {
                        continue;
                    }
                    else
                    {
                        errorpointarrlist.Add(pointarrlist[i]);
                        j++;
                    }
                }
            }
        }


        /// <summary>
        /// 获取图层上高程点坐标
        /// </summary>
        private void getptInLayer(string LayerName)
        {
            Document document = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Database db = HostApplicationServices.WorkingDatabase;
            Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
            
            TypedValue[] value = new TypedValue[]
            {
                new TypedValue((int)DxfCode.LayerName,LayerName),
                new TypedValue((int)DxfCode.Start,"Insert")
            };//设置筛选条件
            SelectionFilter filter = new SelectionFilter(value);

            //选择区域中全部对象
            //PromptSelectionResult psr = ed.SelectAll(filter);
            // 要求在图形区域中手动选择对象
            PromptSelectionResult psr = ed.GetSelection(filter);


            if (psr.Status == PromptStatus.OK)
            {
                using (Transaction transaction = db.TransactionManager.StartTransaction())
                {
                    SelectionSet ss = psr.Value;
                    ObjectId[] ids = ss.GetObjectIds();

                    points ptlist = new points();
                    foreach (ObjectId etId in ids)
                    {
                        BlockReference blr = transaction.GetObject(etId, OpenMode.ForRead) as BlockReference;
                        ptlist.pt = blr.Position;
                        ptlist.objID = blr.Id;
                        pointarrlist.Add(ptlist);
                    }

                    transaction.Commit();
                }
            }
        }

        /// <summary>
        /// 筛选坐标点附近文字信息
        /// </summary>
        private static String GetTxt(Point3d pt, string LayerName)
        {
            ObjectId[] objss = null;//文本对象的ID数组
            Editor ed = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;

            TypedValue[] val = new TypedValue[] 
            { new TypedValue(0, "TEXT"),
              new TypedValue((int)DxfCode.LayerName,LayerName)
            };//需要筛选的类型值
            SelectionFilter fil = new SelectionFilter(val);//选择过滤器
            PromptSelectionResult pro = ed.SelectCrossingWindow(new Point3d(pt.X - 4.0 * blc / 2000, pt.Y - 4.0 * blc / 2000, 0),
                new Point3d(pt.X + 4.0 * blc / 2000, pt.Y + 4.0 * blc / 2000, 0), fil);
            //PromptSelectionResult pro = ed.SelectAll(fil);//获取结果
            SelectionSet ss = pro.Value;//赋值给选择集
            String txt = null;

            if (ss != null)
            {
                objss = ss.GetObjectIds();//将选择集内对象ID赋值给ID数组
                if (objss.Length > 1)
                {
                    for (int i = 0; i < objss.Length; i++)
                    {
                        DBText buftext = GetDBObject(objss[i]) as DBText;
                        if (pt.Z.ToString("f1") == buftext.TextString)
                            txt = buftext.TextString;
                    }
                }
                else
                {
                    DBText buftext = GetDBObject(objss[0]) as DBText;
                    txt = buftext.TextString;
                }
            }
            //for (int i = 0; i < objss.Length; i++)
            //{
            //    DBText buftext = GetDBObject(objss[i]) as DBText;//遍历数组ID将对象赋值给单行文本
            //    Point3d po = buftext.Position;//获取单行文本的坐标点
            //    if (Math.Sqrt((po.X - x) * (po.X - x) + (po.Y - y) * (po.Y - y)) < 10)
            //    {
            //        txt = buftext.TextString;//筛选出的单行文本对象
            //    }
            //    else
            //        continue;
            //}
            return txt;
        }

        private static Entity GetDBObject(ObjectId i)
        {
            Document doc = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Database db = doc.Database;
            Entity ent = null;
            using (Transaction tr = db.TransactionManager.StartTransaction())
            {
                ent = (Entity)tr.GetObject(i, OpenMode.ForRead, true);
                tr.Commit();
            }
            return ent;
        }

        }
    }