using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Electrical;
using Autodesk.Revit.DB.Mechanical;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FWindSoft.Revit
{
    public static class MepCurveExtension
    {
        /// <summary>
        /// 是否是水平的
        /// </summary>
        /// <param name="mepCurve"></param>
        /// <returns></returns>
        public static bool IsHorizontal(this MEPCurve mepCurve)
        {
            var line = mepCurve.GetLocationCurve() as Line;
            if (line == null)
                return false;
            return line.Direction.IsVertical(XYZ.BasisZ);
        }
        /// <summary>
        /// 是否垂直的
        /// </summary>
        /// <param name="mepCurve"></param>
        /// <returns></returns>
        public static bool IsVertical(this MEPCurve mepCurve)
        {
            var line = mepCurve.GetLocationCurve() as Line;
            if (line == null)
                return false;
            return line.Direction.IsParallel(XYZ.BasisZ);
        }
        /// <summary>
        /// 复制指定的mepCurve
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="mepCurve"></param>
        /// <param name="start"></param>
        /// <param name="end"></param>
        /// <returns></returns>
        public static T Copy<T>(this T mepCurve, XYZ start, XYZ end) where T : MEPCurve
        {
            var doc = mepCurve.Document;
            var ids = ElementTransformUtils.CopyElement(doc, mepCurve.Id, XYZ.Zero);
            T copy = null;
            if (ids.Count > 0)
            {
                copy = doc.GetElement(ids.FirstOrDefault()) as T;
            }
            copy.UpdateLocation(start, end);
            return copy;
        }

        /// <summary>
        /// 更新指定mepCurve的迹线
        /// </summary>
        /// 2015-09-15 xls
        /// <param name="mepCurve"></param>
        /// <param name="start"></param>
        /// <param name="end"></param>
        public static void UpdateLocation(this MEPCurve mepCurve, XYZ start, XYZ end)
        {
            if (start.IsEqual(end))
                return;
            var locationCurve = mepCurve.Location as LocationCurve;
            Line newLine =start.NewLine(end);
            locationCurve.Curve = newLine;
            //mepCurve.Rotate(newLine, Math.PI * 2);
        }

        /// <summary>
        /// 刷新mepCurve，mepCurve绕迹线旋转360度
        /// </summary>
        /// <param name="mepCurve"></param>
        public static void Refresh(this MEPCurve mepCurve)
        {
            var locationCurve = mepCurve.Location as LocationCurve;
            mepCurve.Rotate(mepCurve.GetLocationLine(), Math.PI * 2);
        }
        /// <summary>
        /// 替换mepCurve指定点位新的坐标
        /// </summary>
        /// <param name="mepCurve">要修改的MepCurve</param>
        /// <param name="oldPoint">将要被替换的点的位置</param>
        /// <param name="newPoint">新的点的位置</param>
        public static void ReplaceLocation(this MEPCurve mepCurve, XYZ oldPoint, XYZ newPoint)
        {
            //按最接近的点，找到需要替换的点的位置
            var oldLine = mepCurve.GetLocationLine();
            oldPoint = oldLine.GetNearnessPoint(oldPoint);
            if (oldPoint.IsEqual(newPoint))
                return;
            Line newLine = null;
            if (oldLine.StartPoint().IsEqual(oldPoint))
            {
                newLine = newPoint.NewLine(oldLine.EndPoint());
            }
            else
            {
                newLine = oldLine.StartPoint().NewLine(newPoint);
            }
            if (newLine != null)
            {
                var locationCurve = mepCurve.Location as LocationCurve;
                locationCurve.Curve = newLine;
                //mepCurve.Rotate(newLine, Math.PI * 2);
            }
        }
        /// <summary>
        /// 获取距离给定点最近的点connector
        /// </summary>
        /// <param name="element"></param>
        /// <param name="point"></param>
        /// <returns></returns>
        public static Connector GetNearnessConnector(this MEPCurve element, XYZ point)
        {
            var line = element.GetLocationCurve() as Line;
            return element.GetConnectorByOrigin(line.GetNearnessPoint(point));
        }
        /// <summary>
        /// 获取距离给定点最远的点connector
        /// </summary>
        /// <param name="element"></param>
        /// <param name="point"></param>
        /// <returns></returns>
        public static Connector GetFarnessConnector(this MEPCurve element, XYZ point)
        {
            var line = element.GetLocationCurve() as Line;
            return element.GetConnectorByOrigin(line.GetFarnessPoint(point));
        }
        /// <summary>
        /// 设置mepCurve的朝向(有效构件为方向风管或者桥架)
        /// </summary>
        /// <param name="mepCurve"></param>
        /// <param name="normal"></param>
        public static void SetCurveNormal(this MEPCurve mepCurve, XYZ normal)
        {
            if (mepCurve is CableTray cableTray)
            {
                cableTray.CurveNormal = normal;
            }
            else if (mepCurve is Duct duct)
            {
                duct.SetCurveNormal(normal);
            }
        }
    }
}