// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
 
using System.Collections.Generic;
using System.ServiceModel.Description;
using System.Runtime.Serialization;
 
namespace System.ServiceModel.Dispatcher
{
    public class FaultContractInfo
    {
        private string _ns;
        private DataContractSerializer _serializer;
 
        public FaultContractInfo(string action, Type detail)
            : this(action, detail, null, null, null)
        {
        }
        internal FaultContractInfo(string action, Type detail, XmlName elementName, string ns, IList<Type> knownTypes)
        {
            Action = action ?? throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull(nameof(action));
            Detail = detail ?? throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull(nameof(detail));
            if (elementName != null)
            {
                ElementName = elementName.EncodedName;
            }
 
            _ns = ns;
            KnownTypes = knownTypes;
        }
 
        public string Action { get; }
 
        public Type Detail { get; }
 
        internal string ElementName { get; }
 
        internal string ElementNamespace { get { return _ns; } }
 
        internal IList<Type> KnownTypes { get; }
 
        internal DataContractSerializer Serializer
        {
            get
            {
                if (_serializer == null)
                {
                    if (ElementName == null)
                    {
                        _serializer = DataContractSerializerDefaults.CreateSerializer(Detail, KnownTypes, int.MaxValue /* maxItemsInObjectGraph */);
                    }
                    else
                    {
                        _serializer = DataContractSerializerDefaults.CreateSerializer(Detail, KnownTypes, ElementName, _ns == null ? string.Empty : _ns, int.MaxValue /* maxItemsInObjectGraph */);
                    }
                }
                return _serializer;
            }
        }
    }
}