using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Architecture;
using Autodesk.Revit.UI;
using Sai.RvWrapper.Shared;

namespace SZBIM.StandardTools.ParameterManager
{
    public class RemoveParamsEventHandler : IExternalEventHandler
    {
        public void Execute(UIApplication uiapp)
        {
            //获取元素（选择） 显示元素 视图（活动视图）管理（对象）
            UIDocument uidoc = uiapp.ActiveUIDocument;
            //程序
            Document doc = uidoc.Document;
            //获取所有打开文档
            FilteredElementCollector collector = new FilteredElementCollector(doc);
            ElementClassFilter instanceFilter = new ElementClassFilter(typeof(FamilyInstance));
            ElementClassFilter hostobjectFilter = new ElementClassFilter(typeof(HostObject));
            ElementClassFilter railingFilter = new ElementClassFilter(typeof(Railing));
            IList<ElementFilter> filters = new List<ElementFilter>
            {
                instanceFilter,
                hostobjectFilter,
                railingFilter
            };
            LogicalOrFilter orFilter = new LogicalOrFilter(filters);
            collector.WherePasses(orFilter);
            var elements = collector.ToElements();
            StringBuilder sb = new StringBuilder();

            using (TransactionGroup tg = new TransactionGroup(doc, "清理轨交标准参数"))
            {
                tg.Start();


                foreach (Element element in elements)
                {
                    var paramMap = element.ParametersMap;
                    using (Transaction trans = new Transaction(doc, "清理项目参数绑定"))
                    {
                        trans.Start();
                        foreach (Parameter param in paramMap)
                        {
                            if (Regex.IsMatch(param.Definition.Name, @"^[A-Z][A-Z](-)\d(00-)"))
                            {
                                if (param.IsShared)
                                {
                                    uidoc.Document.ParameterBindings.Remove(param.Definition);
                                }
                                //if (param.IsShared)
                                //{

                                //    var binding = doc.ParameterBindings.get_Item(param.Definition);
                                //    if (binding is TypeBinding)
                                //    {
                                //        var typeBinding = (TypeBinding)binding;

                                //        try
                                //        {

                                //            if (typeBinding.Categories.Size == 1)
                                //            {
                                //                uidoc.Document.ParameterBindings.Remove(param.Definition);
                                //            }
                                //            typeBinding.Categories.Erase(element.Category);

                                //        }
                                //        catch (Exception e)
                                //        {
                                //            sb.AppendLine(e.Message);
                                //        }

                                //    }

                                //    if (binding is InstanceBinding)
                                //    {
                                //        var instanceBinding = (InstanceBinding)binding;
                                //        try
                                //        {
                                //            if (instanceBinding.Categories.Size == 1)
                                //            {
                                //                uidoc.Document.ParameterBindings.Remove(param.Definition);
                                //            }
                                //            instanceBinding.Categories.Erase(element.Category);
                                //        }
                                //        catch (Exception e)
                                //        {
                                //            sb.AppendLine(e.Message);
                                //        }
                                //    }
                                //}
                            }
                        }

                        trans.Commit();
                    }

                    bool isNeedEditFamily = false;
                    foreach (Parameter param in paramMap)
                    {
                        if (Regex.IsMatch(param.Definition.Name, @"^[A-Z][A-Z](-)\d(00-)"))
                        {
                            isNeedEditFamily = true;
                            break;
                        }
                    }

                    if (isNeedEditFamily && element is FamilyInstance instance)
                    {
                        Document famdoc = null;
                        try
                        {
                            Family family = instance.Symbol.Family;

                            if (family.IsEditable)
                            {
                                famdoc = doc.EditFamily(family);
                            }
                            else
                            {
                                sb.AppendLine($"{family.Name} 不可编辑。");
                            }

                            if (famdoc != null)
                            {
                                using (Transaction ts = new Transaction(famdoc, "删除参数"))
                                {
                                    ts.Start();
                                    var familyParameters = famdoc.FamilyManager.GetParameters()
                                        .Where(fp => Regex.IsMatch(fp.Definition.Name, @"^[A-Z][A-Z](-)\d(00-)"));
                                    foreach (var fp in familyParameters)
                                    {
                                        famdoc.FamilyManager.RemoveParameter(fp);
                                    }

                                    ts.Commit();
                                }

                                famdoc.LoadFamily(doc, new LoadFamilyOptions());
                                famdoc.Close(false);
                            }
                        }
                        catch (Exception)
                        {
                            sb.AppendLine(famdoc?.Title + "发生错误！");
                        }
                    }
                }

                if (!string.IsNullOrEmpty(sb.ToString()))
                {
                    TaskDialog.Show("错误", sb.ToString());
                }

                tg.Assimilate();
            }
        }

        public string GetName()
        {
            return "清理轨交参数";
        }

        private void PerformDeleteParameters()
        {
            var result = TaskDialog.Show("警告", "是否清理所有轨道交通标准参数？", TaskDialogCommonButtons.Yes | TaskDialogCommonButtons.No);

            if (result == TaskDialogResult.Yes)
            {
            }
        }
    }
}