using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Electrical;
using Autodesk.Revit.DB.Mechanical;
using Autodesk.Revit.DB.Plumbing;
using Autodesk.Revit.UI;
using KMBIM.Revit.Tools;
using KMBIM.Revit.Tools.Utils;

namespace KMBIM
{
    /// <summary>
    ///  대화상자에서의 요청을 실행한다.
    /// </summary>
    public class KDCSRequestHandler : IExternalEventHandler
    {
        // A trivial delegate, but handy
        private delegate void DoorOperation(FamilyInstance e);

        // The value of the latest request made by the modeless form 
        private KDCSRequest m_request = new KDCSRequest();

        /// <summary>
        /// A public property to access the current request value
        /// </summary>
        public KDCSRequest Request
        {
            get { return m_request; }
        }

        /// <summary>
        ///   A method to identify this External Event Handler
        /// </summary>
        public String GetName()
        {
            return "KMBIM External Event Handler";
        }


        /// <summary>
        ///   The top method of the event handler.
        /// </summary>
        /// <remarks>
        ///   This is called by Revit after the corresponding
        ///   external event was raised (by the modeless form)
        ///   and Revit reached the time at which it could call
        ///   the event's handler (i.e. this object)
        /// </remarks>
        public void Execute(UIApplication uiapp)
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            try
            {
                Resolver resolver = Request.Take();
                if (resolver != null)
                {
                    if (uidoc != null)
                    {
                        using (Transaction trans = new Transaction(uidoc.Document, "Avoid Obstruction"))
                        {
                            // 충돌요소
                            List<KDCSIntersectorElement> lstObstruction = new List<KDCSIntersectorElement>();
                            // 회피요소
                            List<KDCSIntersectorElement> lstAvoidance = new List<KDCSIntersectorElement>();
                            // 요소 가져오기
                            resolver.GetElement(ref lstObstruction, ref lstAvoidance);
                            // 회피 요소를 하나씩 벤딩한다.
                            foreach (KDCSIntersectorElement crvelm in lstAvoidance)
                            {
                              
                                try{
                                    trans.Start();
                                    if (crvelm.ElementType == typeof(Duct))
                                    {
                                        resolver.Bend(crvelm.Element as Duct, crvelm.HitPoint, ref lstObstruction);
                                    }
                                    else if (crvelm.ElementType == typeof(Pipe))
                                    {
                                        resolver.Bend(crvelm.Element as Pipe, crvelm.HitPoint, ref lstObstruction);
                                    }
                                    else if (crvelm.ElementType == typeof(CableTray))
                                    {
                                        resolver.Bend(crvelm.Element as CableTray, crvelm.HitPoint, ref lstObstruction);
                                    }
                                    else if (crvelm.ElementType == typeof(Conduit))
                                    {
                                        resolver.Bend(crvelm.Element as Conduit, crvelm.HitPoint, ref lstObstruction);
                                    }
                                    trans.Commit();
                                }
                                catch (Exception ex)
                                {
                                    trans.RollBack();
                                    System.Windows.Forms.MessageBox.Show(ex.Message);
                                }
                            }//for-each                                                                                           
                        }
                    }
                }
            }
            finally
            {
                App.thisApp.WakeFormAvoidObstruction();
            }

            return;
        }





    }//end-class
}