using System;

using System.Collections.Generic;

using System.ServiceModel;

using System.ServiceModel.Channels;

using System.Xml;

using Microsoft.ResourceManagement.Client.WsTransfer;

using Microsoft.ResourceManagement.Client.Faults;

using System.Text;



namespace Microsoft.ResourceManagement.Client.WsTransfer

{

    public class AlternateClient : System.ServiceModel.ClientBase<IAlternate>, IAlternate

    {

        public AlternateClient()

            : base()

        {



        }

        public AlternateClient(string endpointConfigurationName) :

            base(endpointConfigurationName)

        {

        }



        public AlternateClient(string endpointConfigurationName, string remoteAddress) :

            base(endpointConfigurationName, remoteAddress)

        {

        }



        public AlternateClient(string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) :

            base(endpointConfigurationName, remoteAddress)

        {

        }



        public AlternateClient(System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) :

            base(binding, remoteAddress)

        {

        }



        public Message Get(Message request)

        {

            IResource channel = base.ChannelFactory.CreateChannel();

            return channel.Get(request);

        }

        

        public GetResponse Get(GetRequest request)

        {

            if (request == null)

            {

                throw new ArgumentNullException("request");

            }

            Message getRequest = null;

            bool isBaseObjectSearchRequest = false;

            lock (request)

            {

                if (request.BaseObjectSearchRequest == null || request.BaseObjectSearchRequest.AttributeTypes.Count == 0)

                {

                    getRequest = Message.CreateMessage(MessageVersion.Default, Constants.WsTransfer.GetAction);

                }

                else

                {

                    isBaseObjectSearchRequest = true;

                    getRequest = Message.CreateMessage(MessageVersion.Default, Constants.WsTransfer.GetAction, request.BaseObjectSearchRequest, new ClientSerializer(typeof(BaseObjectSearchRequest)));

                    ClientHelper.AddImdaHeaders(request as ImdaRequest, getRequest);

                }



                ClientHelper.AddRmHeaders(request as WsTransfer.TransferRequest, getRequest);

            }

            Message getResponse = Get(getRequest);

            if(getResponse.IsFault)

            {

                // handle fault will throw a .NET exception

                ClientHelper.HandleFault(getResponse);

            }



            GetResponse getResponseTyped = new GetResponse();

            if(isBaseObjectSearchRequest)

            {

                BaseObjectSearchResponse baseObjectSearchResponse = getResponse.GetBody<BaseObjectSearchResponse>(new ClientSerializer(typeof(BaseObjectSearchResponse)));

                getResponseTyped.BaseObjectSearchResponse = baseObjectSearchResponse;

            }

            else

            {

                // we manually construct the partial attributes as if the client had selected all attributes

                // the purpose is to unify the API of the get request

                XmlNode retObject = getResponse.GetBody<XmlNode>(new ClientSerializer(typeof(XmlNode)));

                Dictionary<String, List<XmlNode>> seenAttributes = new Dictionary<string, List<XmlNode>>();

                foreach (XmlNode child in retObject.ChildNodes)

                {

                    if (child.NodeType == XmlNodeType.Element)

                    {

                        if (seenAttributes.ContainsKey(child.Name) == false)

                        {

                            seenAttributes[child.Name] = new List<XmlNode>();

                        }

                        seenAttributes[child.Name].Add(child);

                    }

                }



                getResponseTyped.BaseObjectSearchResponse = new BaseObjectSearchResponse();

                foreach (KeyValuePair<String, List<XmlNode>> item in seenAttributes)

                {

                    PartialAttributeType partialAttribute = new PartialAttributeType();

                    partialAttribute.Values.AddRange(item.Value);

                }             

            }

            return getResponseTyped;

        }

        

        public Message Put(Message request)

        {

            IResource channel = base.ChannelFactory.CreateChannel();

            return channel.Put(request);

        }



        public PutResponse Put(PutRequest request)

        {

            if (request == null)

            {

                throw new ArgumentNullException("request");

            }

            if (request.ModifyRequest == null)

            {

                throw new ArgumentNullException("ModifyRequest");

            }

            if (request.ResourceReferenceProperty == null)

            {

                throw new ArgumentNullException("ResourceReferenceProperty");

            }



            Message putRequest = null;

            lock (request)

            {

                putRequest = Message.CreateMessage(MessageVersion.Default, Constants.WsTransfer.PutAction, request.ModifyRequest, new ClientSerializer(typeof(ModifyRequest)));

                ClientHelper.AddImdaHeaders(request as ImdaRequest, putRequest);

                ClientHelper.AddRmHeaders(request as WsTransfer.TransferRequest, putRequest);

            }

            Message putResponse = Put(putRequest);

            if (putResponse.IsFault)

            {

                ClientHelper.HandleFault(putResponse);

            }

            

            // the response has no information if it isn't a fault

            // PutResponse putResponseTyped = putResponse.GetBody<PutResponse>(new ClientSerializer(typeof(PutResponse)));

            return new PutResponse() ;

        }



        public Message Delete(Message request)

        {

            IResource channel = base.ChannelFactory.CreateChannel();

            return channel.Delete(request);

        }



        public DeleteResponse Delete(DeleteRequest request)

        {

            if (request == null)

            {

                throw new ArgumentNullException("request");

            }

            if (request.ResourceReferenceProperty == null)

            {

                throw new ArgumentNullException("ResourceReferenceProperty");

            }

            Message deleteRequest = null;

            lock (request)

            {

                deleteRequest = Message.CreateMessage(MessageVersion.Default, Constants.WsTransfer.DeleteAction, request, new ClientSerializer(typeof(DeleteRequest)));

                ClientHelper.AddRmHeaders(request as WsTransfer.TransferRequest, deleteRequest);

            }

            Message deleteResponse = Delete(deleteRequest);

            if (deleteResponse.IsFault)

            {

                ClientHelper.HandleFault(deleteResponse);

            }



            // the response has no information if it isn't a fault

            // return deleteResponse.GetBody<DeleteResponse>(new ClientSerializer(typeof(DeleteResponse)));

            return new DeleteResponse();

        }

    }

}