using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.Attributes;
using System.IO;
using System.Windows;

namespace GraphicsStudy
{
    [Transaction(TransactionMode.Manual)]
    public class GraphicsStudyCmd : IExternalCommand
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            UIDocument uidoc = commandData.Application.ActiveUIDocument;
            Document doc = uidoc.Document;
            string path = @"D:\phpstudy_pro\WWW\demo\res\ceshi22.json";
            StreamWriter sw = new StreamWriter(path);

            List<Reference> selRefList;
            //try
            //{
            //    selRefList = uidoc.Selection.PickObjects(Autodesk.Revit.UI.Selection.ObjectType.Element).ToList();
            //}
            //catch
            //{
            //    return Result.Succeeded;
            //}

            //FamilyInstance fi = doc.GetElement(selRefList[0]) as FamilyInstance;

            //BeamData bd = new BeamData(doc, doc.ActiveView.GenLevel, 3500.ToFeet(), (fi.Location as LocationCurve).Curve as Line, fi.Symbol);
            //bd.Width = 100;
            //bd.Heigth = 500;
            //bd.Number = "D1111";
            Transaction trans = new Transaction(doc, "123");
            trans.Start();
            string ddd = "1E88AB71-D7B1-4BE4-A531-09DBE9F62A8E";
            //bool b = doc.SetData<string>(ddd, "ceshi", bd.ToJson());
            //doc.DeleteData(ddd);
            string b = doc.GetData<string>(ddd, "ceshi");
            string[] lineArray = b.Split(new string[] { "\r\n" }, StringSplitOptions.None);
            BeamData nwBD = new BeamData();
            nwBD.GetJson(lineArray);
            trans.Commit();
            MessageBox.Show(b.ToString());
            MessageBox.Show(nwBD.Number);
            return Result.Succeeded;

            List<Instance> instanceList = new List<Instance>();
            List<MeshData> mdList = new List<MeshData>();
            MaterialData materData = new MaterialData();


            for (int ii = 0; ii < selRefList.Count; ii++)
            {
                Reference selRef = selRefList[ii];
                Element selElem = doc.GetElement(selRef);
                //设置instance
                Instance ins = new Instance();
                ins.Id = $"\"{selElem.UniqueId}\"";
                ins.Mesh = ii;
                ins.Visible = 1.0;
                ins.Transform = new double[] { 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0 };
                ins.Info = new List<string>() { $"\n\"名字\":\"{selElem.Name}\"" };
                instanceList.Add(ins);
                //设置mesh
                var geo = selElem.get_Geometry(new Options());
                List<Solid> solidList = GeoMethod.GetSolids(geo);
                MeshData md = new MeshData();
                
                foreach (var s in solidList)
                {
                    foreach (var solidFace in s.Faces)
                    {
                        PlanarFace planarFace = solidFace as PlanarFace;
                        ElementId materId = planarFace.MaterialElementId;
                        
                        if (materId != ElementId.InvalidElementId&&materId!=null)
                        {
                            Material faceMaterial = doc.GetElement(materId) as Material;
                            md.MaterialIndex= materData.AddColor(faceMaterial.Color, faceMaterial.Transparency);
                        }
                        //得到面的网格
                        Mesh faceMesh = planarFace.Triangulate();
                        //得到面的顶点在总的顶点中的索引
                        List<int> meshVIndexList = md.AddVertice(faceMesh.Vertices, planarFace.FaceNormal);
                        //遍历三角面片
                        for (int i = 0; i < faceMesh.NumTriangles; i++)
                        {
                            MeshTriangle mt = faceMesh.get_Triangle(i);
                            for (int j = 0; j < 3; j++)
                            {
                                int index = (int)mt.get_Index(j);
                                md.IndiceList.Add(meshVIndexList[index]);

                            }
                        }

                    }
                }
                md.MaterialIndex = ii;
                mdList.Add(md);
                


            }

            //输出数据
            sw.Write("{\n");
            sw.Write("\"instances\":[");
            instanceList.ForEach(x => sw.Write(x.ToJson()));
            sw.Write("\n],");
            sw.Write("\"meshes\":[");
            mdList.ForEach(md => sw.Write(md.ToJosn()));
            sw.Write("\n],");
            sw.Write("\"materials\":[");
            sw.Write(materData.ToJosn());
            sw.Write("\n]");
            sw.Write("\n}");
            sw.Close();
            MessageBox.Show("生成成功");

            #region 格式测试
            //Instance i = new Instance();
            //i.Id = 12345;
            //i.Mesh = 0;
            //i.Info = 1;
            //i.Transform = new int[]{ 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 };
            //i.Visible = 0.5;
            //string iToJosn = i.ToJson();
            //string path = @"C:\Users\UBIMC-104\Desktop\josn导出\ceshi.json";
            //StreamWriter sw = new StreamWriter(path);
            //sw.Write("\"instances\":[");
            //sw.Write(iToJosn);
            //sw.Write("\r\n],");
            //sw.Close();
            #endregion


            return Result.Succeeded;
        }
    }
}