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

namespace Deltares.DamEngine.Calculators.KernelWrappers.DamMacroStability.Assemblers
{
    /// <summary>
    /// 
    /// </summary>
    public class SoilProfileAssembler<T, S> : DtoAssembler<SoilProfile1D>
    {
        #region Constant declarations

        /// <summary>
        /// Holds the common part of the path to the embedded resource
        /// </summary>
        private const string EmbeddedResourcePath = "Deltares.DamEngine.Calculators.KernelWrappers.DamMacroStability.Xsd";

        /// <summary>
        /// Holds the xml element name
        /// </summary>
        private const string XmlElementName = "Profile";

        /// <summary>
        /// Holds the xml namespace
        /// </summary>
        private const string XmlElementNamespace = "http://deltares.nl/2008/" + XmlShemaName;

        public const string XmlLayerCollectionElementName = "Layers";

        /// <summary>
        /// Holds the name of the xml schema
        /// </summary>
        private const string XmlShemaName = "ProfileDefinition";

        /// <summary>
        /// Holds the xsd resource path 
        /// </summary>
        private const string XsdEmbeddedResourcePath = EmbeddedResourcePath + "." + XmlShemaName + ".xsd";

        #endregion

        /// <summary>
        /// 
        /// </summary>
        public SoilProfileAssembler()
            : base(
                XmlElementName, XmlElementNamespace,
                Assembly.GetExecutingAssembly().GetEmbeddedFile(XsdEmbeddedResourcePath))
        {
            // ToDo zant_xml no X and Y property anymore?
//            this.AddOrUpdateMapping("X", "XCoordinate");
//            this.AddOrUpdateMapping("Y", "YCoordinate");
        }

        public override SoilProfile1D CreateDomainObject(XElement dtoObj)
        {
            SoilProfile1D soilProfile = base.CreateDomainObject(dtoObj);

            // Layers
            var soilLayerAssembler = new SoilLayerAssembler();

            XElement layerCollectionElement = (from element in dtoObj.Descendants()
                                               where element.Name.LocalName == XmlLayerCollectionElementName
                                               select element).Single();

            IEnumerable<XElement> layerElementCollection = from element in layerCollectionElement.Descendants()
                                                           where element.Name.LocalName == soilLayerAssembler.ElementName
                                                           select element;

            var soilDictionary = new Dictionary<string, Soil>();

            foreach (XElement layerElement in layerElementCollection)
            {
                SoilLayer1D soilLayer = soilLayerAssembler.CreateDomainObject(layerElement);

                // Add soils
                // NOTE: this solution is temporary. In future there will probably a collection of soils to pick from (see XML)
                if (layerElement != null)
                {
                    string soilName = layerElement.Attribute("SoilID").Value;
                    Soil soil;
                    if (soilDictionary.ContainsKey(soilName))
                    {
                        soil = soilDictionary[soilName];
                    }
                    else
                    {
                        //soil = new S();
                        soil = new Soil();
                        soil.Name = soilName;
                        soilDictionary.Add(soilName, soil);
                    }
                    soilLayer.Soil = soil;
                }
                soilProfile.Layers.Add(soilLayer);
            }

            return soilProfile;
        }

        public override XElement CreateDataTransferObject(SoilProfile1D soilProfile)
        {
            XElement el = base.CreateDataTransferObject(soilProfile);

            // Layers
            var soilLayerAssembler = new SoilLayerAssembler();

            var layerCollectionElement = new XElement(XmlLayerCollectionElementName);
            el.Add(layerCollectionElement);

            foreach (SoilLayer1D soilLayer in soilProfile.Layers)
            {
                XElement layerElement = soilLayerAssembler.CreateDataTransferObject(soilLayer);
                layerCollectionElement.Add(layerElement);
            }
            return el;
        }
    }
}