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

namespace SZBIM.StandardTools.ParameterManager
{
    [Transaction(TransactionMode.Manual)]
    [Regeneration(RegenerationOption.Manual)]
    public class ModifyParamValuesHandler : IExternalEventHandler
    {
        public List<Element> ElementsSelected { get; set; }
        public Parameter ParameterSelected { get; set; }
        public string Value { get; set; }

        public void Execute(UIApplication uiapp)
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            Document doc = uidoc.Document;
            StringBuilder sb = new StringBuilder();
            doc.Invoke(ts =>
            {
                foreach (var elem in ElementsSelected)
                {
                    var param = elem.GetParameters(ParameterSelected.Definition.Name).FirstOrDefault();
                    if (param == null)
                    {
                        var symbolOrType = doc.GetElement(elem.GetTypeId());
                        param = symbolOrType.GetParameters(ParameterSelected.Definition.Name).FirstOrDefault();
                    }

                    try
                    {
                        if (param != null)
                            switch (param.StorageType)
                            {
                                case StorageType.None:
                                    break;
                                case StorageType.Integer:
                                    param.Set(Convert.ToInt16(Value));
                                    break;
                                case StorageType.Double:
                                    param.Set(Convert.ToDouble(Value));
                                    break;
                                case StorageType.String:
                                    param.Set(Value);
                                    break;
                                case StorageType.ElementId:
                                    param.Set(new ElementId(Convert.ToInt16(Value)));
                                    break;
                                default:
                                    throw new ArgumentOutOfRangeException();
                            }
                    }
                    catch (Exception e)
                    {
                        if (!sb.ToString().Contains(e.Message))
                        {
                            sb.AppendLine(e.Message);
                        }
                    }
                }
            });
            if (!string.IsNullOrEmpty(sb.ToString()))
            {
                TaskDialog.Show("错误", sb.ToString());
            }
            else
            {
                TaskDialog.Show("提示", "修改完成！");
            }
        }

        public string GetName()
        {
            return "修改参数值";
        }
    }
}