/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */
using System;
using log4net;
using Qpid.Buffer;
using Qpid.Messaging;

namespace Qpid.Framing
{
    public class BasicContentHeaderProperties : IContentHeaderProperties
    {
        private static readonly ILog _log = LogManager.GetLogger(typeof(BasicContentHeaderProperties));

        public string ContentType;

        public string Encoding;

        public FieldTable Headers;

        public byte DeliveryMode;

        public byte Priority;

        public string CorrelationId;

        public uint Expiration;

        public string ReplyTo;

        public string MessageId;

        public ulong Timestamp;

        public string Type;

        public string UserId;

        public string AppId;

        public string ClusterId;
        
        public BasicContentHeaderProperties()
        {
        }

        public uint PropertyListSize
        {
            get
            {
                return (uint)(EncodingUtils.EncodedShortStringLength(ContentType) +
                       EncodingUtils.EncodedShortStringLength(Encoding) +
                       EncodingUtils.EncodedFieldTableLength(Headers) +
                       1 + 1 +
                       EncodingUtils.EncodedShortStringLength(CorrelationId) +
                       EncodingUtils.EncodedShortStringLength(ReplyTo) +
                       EncodingUtils.EncodedShortStringLength(String.Format("{0:D}", Expiration)) +
                       EncodingUtils.EncodedShortStringLength(MessageId) +
                       8 +
                       EncodingUtils.EncodedShortStringLength(Type) +
                       EncodingUtils.EncodedShortStringLength(UserId) +
                       EncodingUtils.EncodedShortStringLength(AppId) +
                       EncodingUtils.EncodedShortStringLength(ClusterId));
                
            }
        }

        public ushort PropertyFlags
        {   
            get
            {
                int value = 0;

                // for now we just blast in all properties
                for (int i = 0; i < 14; i++)
                {
                    value += (1 << (15-i));
                }
                return (ushort) value;
            }
        }

        public void WritePropertyListPayload(ByteBuffer buffer)
        {
            EncodingUtils.WriteShortStringBytes(buffer, ContentType);
            EncodingUtils.WriteShortStringBytes(buffer, Encoding);
            EncodingUtils.WriteFieldTableBytes(buffer, Headers);
            buffer.put(DeliveryMode);
            buffer.put(Priority);
            EncodingUtils.WriteShortStringBytes(buffer, CorrelationId);
            EncodingUtils.WriteShortStringBytes(buffer, ReplyTo);
            EncodingUtils.WriteShortStringBytes(buffer, String.Format("{0:D}", Expiration));
            EncodingUtils.WriteShortStringBytes(buffer, MessageId);            
            buffer.put(Timestamp);            
            EncodingUtils.WriteShortStringBytes(buffer, Type);
            EncodingUtils.WriteShortStringBytes(buffer, UserId);
            EncodingUtils.WriteShortStringBytes(buffer, AppId);
            EncodingUtils.WriteShortStringBytes(buffer, ClusterId);
        }

        public void PopulatePropertiesFromBuffer(ByteBuffer buffer, ushort propertyFlags) 
        {
            _log.Debug("Property flags: " + propertyFlags);
            if ((propertyFlags & (1 << 15)) > 0)
                ContentType = EncodingUtils.ReadShortString(buffer);
            if ((propertyFlags & (1 << 14)) > 0)
                Encoding = EncodingUtils.ReadShortString(buffer);
            if ((propertyFlags & (1 << 13)) > 0)
                Headers = EncodingUtils.ReadFieldTable(buffer);
            if ((propertyFlags & (1 << 12)) > 0)
                DeliveryMode = buffer.get();
            if ((propertyFlags & (1 << 11)) > 0)
                Priority = buffer.get();
            if ((propertyFlags & (1 << 10)) > 0)
                CorrelationId = EncodingUtils.ReadShortString(buffer);
            if ((propertyFlags & (1 << 9)) > 0)
                ReplyTo = EncodingUtils.ReadShortString(buffer);
            if ((propertyFlags & (1 << 8)) > 0)
                Expiration = UInt32.Parse(EncodingUtils.ReadShortString(buffer));
            if ((propertyFlags & (1 << 7)) > 0)
                MessageId = EncodingUtils.ReadShortString(buffer);
            if ((propertyFlags & (1 << 6)) > 0)                                            
                Timestamp = buffer.GetUnsignedLong();            
            if ((propertyFlags & (1 << 5)) > 0)
                Type = EncodingUtils.ReadShortString(buffer);
            if ((propertyFlags & (1 << 4)) > 0)
                UserId = EncodingUtils.ReadShortString(buffer);
            if ((propertyFlags & (1 << 3)) > 0)
                AppId = EncodingUtils.ReadShortString(buffer);
            if ((propertyFlags & (1 << 2)) > 0)
                ClusterId = EncodingUtils.ReadShortString(buffer);
        }

        public void SetDeliveryMode(DeliveryMode deliveryMode)
        {
            if (deliveryMode == Messaging.DeliveryMode.NonPersistent)
            {
                DeliveryMode = 1;
            }
            else
            {
                DeliveryMode = 2;
            }
        }

        public override string ToString()
        {
            return "Properties: " + ContentType + " " + Encoding + " " + Timestamp + " " + Type;
        }
    }
}