// Copyright (C) Stichting Deltares 2017. All rights reserved.
//
// This file is part of the Dam Engine.
//
// The Dam Engine is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// All names, logos, and references to "Deltares" are registered trademarks of
// Stichting Deltares and remain full property of Stichting Deltares at all times.
// All rights reserved.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Xml.Linq;
using Deltares.DamEngine.Calculators.General;
using Deltares.DamEngine.Data.Geotechnics;

namespace Deltares.DamEngine.Calculators.KernelWrappers.DamMacroStability.Assemblers
{
    /// <summary>
    /// 
    /// </summary>    
    public class DAMMStabGeometry2DDataAssembler : DtoDocumentAssembler<Geometry2DData, Geometry2DData>
    {
        #region Constant declarations

        #endregion
        /// <summary>
        /// Holds the xml element name
        /// </summary>
        public const string XmlElementNameGeometry2DData = "Geometry2DData";

        /// <summary>
        /// Holds the Geometry2DData xml element and attribute names
        /// </summary>
        public const string XmlElementGeometry2DData = "Geometry2DData";

        /// <summary>
        /// The XML element boundary
        /// </summary>
        public const string XmlElementBoundary = "Boundary";

        /// <summary>
        /// The XML attribute boundary index
        /// </summary>
        public const string XmlAttributeBoundaryIndex = "BoundaryIndex";

        /// <summary>
        /// The XML attribute soilname
        /// </summary>
        public const string XmlAttributeSoilname = "Soilname";

        /// <summary>
        /// The XML element surface point
        /// </summary>
        public const string XmlElementSurfacePoint = "SurfacePoint";

        /// <summary>
        /// The XML attribute x coord
        /// </summary>
        public const string XmlAttributeXCoord = "XCoord";

        /// <summary>
        /// The XML attribute y coord
        /// </summary>
        public const string XmlAttributeYCoord = "YCoord";


        /// <summary>
        /// Initializes a new instance of the <see cref="DAMMStabGeometry2DDataAssembler"/> class.
        /// </summary>
        public DAMMStabGeometry2DDataAssembler() :
            base(DamMStabAssembler.XmlElementName, DamMStabAssembler.XmlElementNamespace, DamMStabAssembler.XsdEmbeddedResourcePath)
        {
        }

        /// <summary>
        /// Creates the data transfer object.
        /// </summary>
        /// <param name="geometry2DData">The geometry2 d data.</param>
        /// <returns></returns>
        public override XDocument CreateDataTransferObject(Geometry2DData geometry2DData)
        {
            var doc = base.CreateDataTransferObject(geometry2DData);
            XNamespace tns = ElementNamespace;
            XNamespace tnsb = XmlElementNameGeometry2DData;

            // Geometry2DData
            XElement geometry2DDataElement = GetGeometry2DDataElement(geometry2DData, tns);
            doc.Root.Add(geometry2DDataElement);


            return doc;
        }

        /// <summary>
        /// Assembles the GeometryCreationOptions element 
        /// </summary>
        /// <param name="geometry2DData"></param>
        /// <param name="tnsb"></param>
        /// <returns></returns>
        private static XElement GetGeometry2DDataElement(Geometry2DData geometry2DData, XNamespace tnsb)
        {
            return null;
        }


        /// <summary>
        /// Creates the output object.
        /// </summary>
        /// <param name="dtoDocument">The dto document.</param>
        /// <returns></returns>
        public override Geometry2DData CreateOutputObject(XDocument dtoDocument)
        {
            var geometry2DData = new Geometry2DData();
            // Get the dto
            XElement dto = (from x in dtoDocument.Descendants()
                            where x.Name.LocalName == DAMMStabGeometry2DDataAssembler.XmlElementGeometry2DData
                            select x).FirstOrDefault();

            IEnumerable<XElement> layerCollection = (from x in dtoDocument.Descendants()
                                                     where x.Name.LocalName == DAMMStabGeometry2DDataAssembler.XmlElementBoundary
                                                     select x);
            foreach (XElement layerElement in layerCollection)
            {
                var geometry2DLayer = new Geometry2DLayer();
                if (layerElement.Attribute(DAMMStabGeometry2DDataAssembler.XmlAttributeSoilname) != null)
                {
                    geometry2DLayer.soilName = layerElement.AttributeAs<string>(DAMMStabGeometry2DDataAssembler.XmlAttributeSoilname);
                }
                else
                {
                    geometry2DLayer.soilName = "";
                }
                IEnumerable<XElement> surfacePointCollection = (from x in layerElement.Descendants()
                                                                where x.Name.LocalName == DAMMStabGeometry2DDataAssembler.XmlElementSurfacePoint
                                                                select x);
                var boundaryLine = new Geometry2DBoundaryLine();
                foreach (XElement surfacePointElement in surfacePointCollection)
                {
                    var point = new Geometry2DPoint();
                    point.X = surfacePointElement.AttributeAs<double>(DAMMStabGeometry2DDataAssembler.XmlAttributeXCoord);
                    point.Z = surfacePointElement.AttributeAs<double>(DAMMStabGeometry2DDataAssembler.XmlAttributeYCoord);
                    boundaryLine.Points.Add(point);
                }
                geometry2DLayer.boundaryLine = boundaryLine;
                geometry2DData.AddLayer(geometry2DLayer);
            }
            return geometry2DData;
        }
    }
}