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

namespace SZBIM.StandardTools.ParameterManager
{
    /// <summary>
    ///     添加项目文件中的族的族参数
    /// </summary>
    public class AddProjectFileFamilyParamsHandler : IExternalEventHandler
    {
        private string transName;

        /// <summary>
        ///     要添加的参数合集
        /// </summary>
        public List<ParamModel> ParameterList { get; set; }

        /// <summary>
        ///     所有共享参数的合集（要添加的参数合集中的参数若能在这里找到，则添加这里的共享参数)
        /// </summary>
        public List<SharedParamModel> SharedParameters { get; set; }

        public List<FamilyInstance> Instances { get; set; }
        public bool IsFamilyParam { get; set; } //是：族参数，否：族共享参数

        public void Execute(UIApplication uiapp)
        {
            StringBuilder sb = new StringBuilder();
            UIDocument uidoc = uiapp.ActiveUIDocument;
            var app = uiapp.Application;
            Document doc = uidoc.Document;


            List<FamilyInstance> instancesSelected = uidoc.Selection.PickElementsByRectangle(new TypesSelectionFilter(typeof(FamilyInstance)), "请框选需要添加共享参数作为族参数的族实例").Cast<FamilyInstance>().ToList();

            if (!instancesSelected.Any())
            {
                return;
            }


            //根据族实例，去重得到族
            var families = instancesSelected.GroupBy(ins => ins.Symbol.Family.Id.IntegerValue)
                .Select(g => g.FirstOrDefault()?.Symbol.Family)
                .ToList();

            SharedParamsUtil util = new SharedParamsUtil();
            transName = IsFamilyParam ? "添加族参数" : "添加族参数（共享参数）";
            using (var group = new TransactionGroup(doc, transName))
            {
                group.Start();
                var originSharedParametersFile = uiapp.Application.SharedParametersFilename.Clone();
                var tempFile = util.CreateTempSharedParameterFile(app, "TempSharedParameters");
                var g = tempFile.Groups.Create("TempGroup");
                foreach (var family in families)
                {
                    if (!family.IsEditable)
                    {
                        sb.AppendLine($"族：{family.Name}，无法编辑。");
                        continue;
                    }

                    var paramDatas = ParameterList.Where(data => data.IsChecked == true);
                    var famdoc = doc.EditFamily(family);
                    famdoc.Invoke(ts =>
                    {
                        if (IsFamilyParam)
                        {
                            foreach (var paramData in paramDatas)
                            {
                                famdoc.FamilyManager.AddParameter(paramData.FullProperty,
                                    BuiltInParameterGroup.PG_ADSK_MODEL_PROPERTIES, ParameterType.MultilineText,
                                    true);
                            }
                        }
                        else
                        {
                            foreach (var paramData in paramDatas)
                            {
                                var familyParam = famdoc.FamilyManager.get_Parameter(paramData.FullProperty);
                                //族参数已经存在时
                                if (familyParam != null)
                                {
                                    sb.AppendLine($"{famdoc.Title}的{paramData.FullProperty}参数已存在，不进行添加。");
                                    continue;
                                }


                                var sharedParamFinded = SharedParameters.FirstOrDefault(p =>
                                    p.FullParamName == paramData.FullProperty);
                                try
                                {
                                    if (sharedParamFinded != null)
                                    {
                                        var options =
                                            new ExternalDefinitionCreationOptions(sharedParamFinded.FullParamName,
                                                ParameterType.MultilineText)
                                            {
                                                GUID = new Guid(sharedParamFinded.Guid)
                                            };
                                        var definition = g.Definitions.get_Item(sharedParamFinded.FullParamName) ?? g.Definitions.Create(options);
                                        famdoc.FamilyManager.AddParameter((ExternalDefinition)definition,
                                            BuiltInParameterGroup.PG_ADSK_MODEL_PROPERTIES, true);
                                    }
                                    else //找不到则添加为新的共享参数
                                    {
                                        var options = new ExternalDefinitionCreationOptions(paramData.FullProperty,
                                            ParameterType.MultilineText)
                                        {
                                            GUID = new Guid(paramData.Guid)
                                        };
                                        var definition = g.Definitions.get_Item(paramData.FullProperty) ??
                                                         g.Definitions.Create(options);

                                        famdoc.FamilyManager.AddParameter((ExternalDefinition)definition,
                                            BuiltInParameterGroup.PG_ADSK_MODEL_PROPERTIES, true);
                                    }
                                }
                                catch (Exception)
                                {
                                    // ignored
                                }
                            }
                        }
                    });
                    famdoc.LoadFamily(doc, new LoadFamilyOptions());
                    famdoc.Close(false);
                }

                File.Delete(tempFile.Filename);
                uiapp.Application.SharedParametersFilename = originSharedParametersFile.ToString();

                group.Assimilate();
            }

            if (string.IsNullOrEmpty(sb.ToString()))
            {
                TaskDialog.Show("提示", "添加完成！");
            }
            else
            {
                TaskDialog.Show("警告", sb.ToString());
            }
        }

        public string GetName()
        {
            return transName;
        }
    }
}