//
// (C) Copyright 2003-2019 by Autodesk, Inc.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
// provided that the above copyright notice appears in all copies and
// that both that copyright notice and the limited warranty and
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// documentation.
//
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// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
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//
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// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
// (Rights in Technical Data and Computer Software), as applicable.
//

namespace Revit.SDK.Samples.FrameBuilder.CS
{
    using System;
    using System.Text;
    using System.Collections.Generic;

    using Autodesk.Revit;
    using Autodesk.Revit.ApplicationServices;
    using Autodesk.Revit.DB;
    using Autodesk.Revit.UI;
    using UV = Autodesk.Revit.DB.UV;

    /// <summary>
    /// data class contains information to create framing
    /// </summary>
    public class FrameData
    {
        const int XNumberMaxValue = 50;			// maximum number of Columns in the X Direction
        const int XNumberMinValue = 2;			// minimum number of Columns in the X Direction
        const int XNumberDefault = 3;			// default number of Columns in the X Direction
        const int YNumberMaxValue = 50;			// maximum number of Columns in the Y Direction
        const int YNumberMinValue = 2;			// minimum number of Columns in the Y Direction
        const int YNumberDefault = 3;			// default number of Columns in the Y Direction
        const int TotalMaxValue = 200;			// maximum total number of Columns to create
        const int FloorNumberMinValue = 1;		// minimum number of floors
        const int FloorNumberMaxValue = 200;	// maximum number of floors
        const double DistanceMaxValue = 3000;	// maxinum distance between 2 adjoining columns
        const double DistanceMinValue = 1;		// mininum distance between 2 adjoining columns
        const double DistanceDefault = 5;		// default distance between 2 adjoining columns
        const double LevelHeightMaxValue = 100;	// maximum height between 2 new levels
        const double LevelHeightMinValue = 1;	// minimum height between 2 new levels
        const int DigitPrecision = 4;			// the number of significant digits(precision)

        int m_xNumber = XNumberDefault;			// number of Columns in the X Direction
        int m_yNumber = XNumberDefault;			// number of Columns in the Y Direction
        double m_distance = DistanceDefault;	// distance between 2 adjoining columns
        int m_floorNumber;						// number of floors
        double m_levelHeight;					// increaced height of autogenerated levels
        Autodesk.Revit.DB.UV m_frameOrigin = new Autodesk.Revit.DB.UV(0.0, 0.0);	// bottom left point of the frame
        double m_frameOriginAngle = 0.0;		// the angle to rotate around bottom left point
        int m_originalLevelSize;				// the number of levels before invoke external command

        FamilySymbol m_columnSymbol;			// column's type
        FamilySymbol m_beamSymbol;				// beam's type
        FamilySymbol m_braceSymbol;				// brace's type

        ExternalCommandData m_commandData;
        FrameTypesMgr m_columnSymbolsMgr;		// object manage all column types
        FrameTypesMgr m_beambracesSymbolsMgr;	// object manage all beam types
        SortedList<double, Level> m_levels;		// list of all levels in the order of Elevation

        /// <summary>
        /// command data pass from entry point
        /// </summary>
        public ExternalCommandData CommandData
        {
            get
            {
                return m_commandData;
            }
        }

        /// <summary>
        /// object manage all column types
        /// </summary>
        public FrameTypesMgr ColumnSymbolsMgr
        {
            get
            {
                return m_columnSymbolsMgr;
            }
        }

        /// <summary>
        /// object manage all beam types
        /// </summary>
        public FrameTypesMgr BeamSymbolsMgr
        {
            get
            {
                return m_beambracesSymbolsMgr;
            }
        }

        /// <summary>
        /// object manage all brace types
        /// </summary>
        public FrameTypesMgr BraceSymbolsMgr
        {
            get
            {
                return m_beambracesSymbolsMgr;
            }
        }

        /// <summary>
        /// number of Columns in the Y Direction
        /// </summary>
        public int YNumber
        {
            get
            {
                return m_yNumber;
            }
            set
            {
                if (value < YNumberMinValue || value > YNumberMaxValue)
                {
                    string message = "Number of Columns in the Y Direction should no less than "
                        + YNumberMinValue.ToString() + " and no more than "
                        + YNumberMaxValue.ToString();
                    throw new ErrorMessageException(message);
                }
                CheckTotalNumber(value * XNumber * (m_floorNumber - 1));
                m_yNumber = value;
            }
        }

        /// <summary>
        /// number of Columns in the X Direction
        /// </summary>
        public int XNumber
        {
            get
            {
                return m_xNumber;
            }
            set
            {
                if (value < XNumberMinValue || value > XNumberMaxValue)
                {
                    string message = "Number of Columns in the X Direction should no less than "
                        + XNumberMinValue.ToString() + " and no more than "
                        + XNumberMaxValue.ToString();
                    throw new ErrorMessageException(message);
                }
                CheckTotalNumber(value * YNumber * (m_floorNumber - 1));
                m_xNumber = value;
            }
        }

        /// <summary>
        /// distance between 2 adjoining columns
        /// </summary>
        public double Distance
        {
            get
            {
                return m_distance;
            }
            set
            {
                if (value < DistanceMinValue || value > DistanceMaxValue)
                {
                    string message = "The distance between columns shoule no less than "
                        + DistanceMinValue.ToString() + "and no more than "
                        + DistanceMaxValue.ToString();
                    throw new ErrorMessageException(message);
                }
                m_distance = value;
            }
        }

        /// <summary>
        /// number of floors
        /// </summary>
        public int FloorNumber
        {
            get
            {
                return m_floorNumber;
            }
            set
            {
                if (value < FloorNumberMinValue || value > FloorNumberMaxValue)
                {
                    string message = "Number of floors should no less than "
                        + FloorNumberMinValue.ToString() + " and no more than "
                        + FloorNumberMaxValue.ToString();
                    throw new ErrorMessageException(message);
                }
                CheckTotalNumber(XNumber * YNumber * (value - 1));
                m_floorNumber = value;
            }
        }

        /// <summary>
        /// increased height of autogenerated levels
        /// </summary>
        public double LevelHeight
        {
            get
            {
                return Math.Round(m_levelHeight, DigitPrecision);
            }
            set
            {
                if (value < LevelHeightMinValue || value > LevelHeightMaxValue)
                {
                    string message = "The distance between columns shoule no less than "
                        + LevelHeightMinValue.ToString() + "and no more than "
                        + LevelHeightMaxValue.ToString();
                    throw new ErrorMessageException(message);
                }
                m_distance = value;
            }
        }

        /// <summary>
        /// bottom left point of the frame
        /// </summary>
        public Autodesk.Revit.DB.UV FrameOrigin
        {
            get
            {
                return m_frameOrigin;
            }
            set
            {
                m_frameOrigin = value;
            }
        }

        /// <summary>
        /// the angle to rotate around bottom left point
        /// </summary>
        public double FrameOriginAngle
        {
            get
            {
                return m_frameOriginAngle;
            }
            set
            {
                m_frameOriginAngle = value;
            }
        }

        /// <summary>
        /// column's type
        /// </summary>
        public FamilySymbol ColumnSymbol
        {
            get
            {
                return m_columnSymbol;
            }
        }

        /// <summary>
        /// beam's type
        /// </summary>
        public FamilySymbol BeamSymbol
        {
            get
            {
                return m_beamSymbol;
            }
        }

        /// <summary>
        /// brace's type
        /// </summary>
        public FamilySymbol BraceSymbol
        {
            get
            {
                return m_braceSymbol;
            }
        }

        /// <summary>
        /// list of all levels in the ordr of Elevation
        /// </summary>
        public SortedList<double, Level> Levels
        {
            get
            {
                return m_levels;
            }
        }

        /// <summary>
        /// the number of levels before invoke external command
        /// </summary>
        public int OriginalLevelSize
        {
            get
            {
                return m_originalLevelSize;
            }
        }

        /// <summary>
        /// create FramingData object. applicationException will throw out,
        /// if current Revit document doesn't satisfy the condition to create framing
        /// </summary>
        /// <param name="commandData"></param>
        /// <returns></returns>
        public static FrameData CreateInstance(ExternalCommandData commandData)
        {
            FrameData data = new FrameData(commandData);
            data.Initialize();
            data.Validate();

            // initialize members after checking precondition
            data.m_floorNumber = (data.m_levels.Count - 1) > 0 ? (data.m_levels.Count - 1) : 1;
            data.m_columnSymbol = data.m_columnSymbolsMgr.FramingSymbols[0];
            data.m_beamSymbol = data.m_beambracesSymbolsMgr.FramingSymbols[0];
            data.m_braceSymbol = data.m_beambracesSymbolsMgr.FramingSymbols[0];
            data.m_levelHeight = data.m_levels.Values[data.m_levels.Count - 1].Elevation
                - data.m_levels.Values[data.m_levels.Count - 2].Elevation;

            return data;
        }

        /// <summary>
        /// cast object to FamilySymbol and set as column's type
        /// </summary>
        /// <param name="obj">FamilySymbol object</param>
        /// <returns>failed to cast and set</returns>
        public bool SetColumnSymbol(object obj)
        {
            FamilySymbol symbol = obj as FamilySymbol;
            if (null == symbol)
            {
                return false;
            }
            m_columnSymbol = symbol;
            return true;
        }

        /// <summary>
        /// cast object to FamilySymbol and set as beam's type
        /// </summary>
        /// <param name="obj">FamilySymbol object</param>
        /// <returns>failed to cast and set</returns>
        public bool SetBeamSymbol(object obj)
        {
            FamilySymbol symbol = obj as FamilySymbol;
            if (null == symbol)
            {
                return false;
            }
            m_beamSymbol = symbol;
            return true;
        }

        /// <summary>
        /// cast object to FamilySymbol and set as brace's type
        /// </summary>
        /// <param name="obj">FamilySymbol object</param>
        /// <returns>failed to cast and set</returns>
        public bool SetBraceSymbol(object obj)
        {
            FamilySymbol symbol = obj as FamilySymbol;
            if (null == symbol)
            {
                return false;
            }
            m_braceSymbol = symbol;
            return true;
        }

        /// <summary>
        /// add more levels so that level number can meet floor number
        /// </summary>
        public void UpdateLevels()
        {
            double baseElevation = m_levels.Values[m_levels.Count - 1].Elevation;
            Autodesk.Revit.Creation.Document createDoc = m_commandData.Application.ActiveUIDocument.Document.Create;
            Autodesk.Revit.DB.Document m_Doc = m_commandData.Application.ActiveUIDocument.Document;

            FilteredElementCollector collector = new FilteredElementCollector(m_Doc);
            IList<Element> viewFamilyTypes = collector.OfClass(typeof(ViewFamilyType)).ToElements();
            ElementId floorPlanId = ElementId.InvalidElementId;
            foreach (Element e in viewFamilyTypes)
            {
                ViewFamilyType v = e as ViewFamilyType;

                if (v != null && v.ViewFamily == ViewFamily.FloorPlan)
                {
                    floorPlanId = e.Id;
                    break;
                }
            }

            int newLevelSize = (m_floorNumber + 1) - m_levels.Count;
            if (newLevelSize == 0)
            {
                return;
            }

            for (int ii = 0; ii < newLevelSize; ii++)
            {
                double elevation = baseElevation + m_levelHeight * (ii + 1);
                Level newLevel = Level.Create(m_commandData.Application.ActiveUIDocument.Document, elevation);
                //createDoc.NewViewPlan(newLevel.Name, newLevel, Autodesk.Revit.DB.ViewPlanType.FloorPlan);
                ViewPlan viewPlan = ViewPlan.Create(m_Doc, floorPlanId, newLevel.Id);
                viewPlan.Name = newLevel.Name;
                m_levels.Add(elevation, newLevel);
            }
            m_originalLevelSize = m_levels.Count;
        }

        /// <summary>
        /// it is only used for object factory method
        /// </summary>
        /// <param name="commandData"></param>
        private FrameData(ExternalCommandData commandData)
        {
            // initialize members
            m_commandData = commandData;
            m_columnSymbolsMgr = new FrameTypesMgr(commandData);
            m_beambracesSymbolsMgr = new FrameTypesMgr(commandData);
            m_levels = new SortedList<double, Level>();
            m_originalLevelSize = m_levels.Count;
            m_yNumber = YNumberDefault;
            m_xNumber = XNumberDefault;
            m_distance = DistanceDefault;
        }

        /// <summary>
        /// check the total number of columns to create less than certain value
        /// </summary>
        /// <param name="number"></param>
        /// <returns></returns>
        private static void CheckTotalNumber(int number)
        {
            if (number > TotalMaxValue)
            {
                string message = "The total number of columns should less than "
                    + TotalMaxValue.ToString();
                throw new ErrorMessageException(message);
            }
        }

        /// <summary>
        /// initialize list of column, beam and brace's type;
        /// initialize list of level
        /// </summary>
        private void Initialize()
        {
            Application app = m_commandData.Application.Application;
            Document doc = m_commandData.Application.ActiveUIDocument.Document;

            FilteredElementCollector collector1 = new FilteredElementCollector(doc);
            IList<Autodesk.Revit.DB.Element> a1 = collector1.OfClass(typeof(Level)).ToElements();

            foreach (Level lev in a1)
            {
                m_levels.Add(lev.Elevation, lev);
            }

            a1.Clear();

            Categories categories = doc.Settings.Categories;
            BuiltInCategory bipColumn = BuiltInCategory.OST_StructuralColumns;
            BuiltInCategory bipFraming = BuiltInCategory.OST_StructuralFraming;
            Autodesk.Revit.DB.ElementId idColumn = categories.get_Item(bipColumn).Id;
            Autodesk.Revit.DB.ElementId idFraming = categories.get_Item(bipFraming).Id;

            ElementCategoryFilter filterColumn = new ElementCategoryFilter(bipColumn);
            ElementCategoryFilter filterFraming = new ElementCategoryFilter(bipFraming);
            LogicalOrFilter orFilter = new LogicalOrFilter(filterColumn, filterFraming);

            ElementClassFilter filterSymbol = new ElementClassFilter(typeof(FamilySymbol));
            LogicalAndFilter andFilter = new LogicalAndFilter(orFilter, filterSymbol);
            //
            // without filtering for the structural categories,
            // our sample project was returning over 500 family symbols;
            // adding the category filters reduced this number to 40:
            //
            FilteredElementCollector collector2 = new FilteredElementCollector(doc);
            IList<Element> a2 = collector2.WherePasses(andFilter).ToElements();

            foreach (FamilySymbol symbol in a2)
            {
                Autodesk.Revit.DB.ElementId categoryId = symbol.Category.Id;

                if (idFraming.Equals(categoryId))
                {
                    m_beambracesSymbolsMgr.AddSymbol(symbol);
                }
                else if (idColumn.Equals(categoryId))
                {
                    m_columnSymbolsMgr.AddSymbol(symbol);
                }
            }
        }

        /// <summary>
        /// validate the precondition to create framing
        /// </summary>
        private void Validate()
        {
            // level shouldn't less than 2
            if (m_levels.Count < 2)
            {
                throw new ErrorMessageException("The level's number in active document is less than 2.");
            }
            // no Structural Column family is loaded in current document
            if (m_columnSymbolsMgr.Size == 0)
            {
                throw new ErrorMessageException("No Structural Column family is loaded in current project.");
            }
            // no Structural Beam family is loaded in current document
            if (m_beambracesSymbolsMgr.Size == 0)
            {
                throw new ErrorMessageException("No Structural Beam family is loaded in current project.");
            }
        }
    }
}