using System.Xml;

namespace Wayne.Lib.Log
{
    /// <summary>
    /// Event log subscription output
    /// </summary>
    public class LogConfigEventLogSubscriptionOutput : LogConfigOutput
    {
        /// <summary>
        /// Subscriber ID
        /// </summary>
        public string SubscriberId { get; set; }

        /// <summary>
        /// Storage type
        /// </summary>
        public LogConfigEventLogStorageType StorageType { get; set; }

        internal const string XmlType = "EventLogSubscription";

        /// <summary>
        /// Constructor
        /// </summary>
        public LogConfigEventLogSubscriptionOutput()
        {
        }

        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="subscriberId"></param>
        /// <param name="storageType"></param>
        public LogConfigEventLogSubscriptionOutput(string subscriberId, LogConfigEventLogStorageType storageType)
        {
            SubscriberId = subscriberId;
            StorageType = storageType;
        }

        /// <summary>
        /// Deserialization constructor
        /// </summary>
        /// <param name="parametersNode"></param>
        /// <param name="ns"></param>
        internal LogConfigEventLogSubscriptionOutput(XmlNode parametersNode, string ns)
        {
            XmlNode eventLogParamsNode = parametersNode["EventLogSubscriptionParams", ns];
            SubscriberId = eventLogParamsNode.Attributes["SubscriberId"].Value;
            StorageType = EnumSupport.Parse(eventLogParamsNode.Attributes["StorageType"].Value, false, LogConfigEventLogStorageType.Volatile);
        }

        /// <summary>
        /// Serialization
        /// </summary>
        /// <param name="xmlWriter"></param>
        internal override void WriteXml(XmlWriter xmlWriter)
        {
            xmlWriter.WriteStartElement("Output");
            xmlWriter.WriteAttributeString("Type", XmlType);
            xmlWriter.WriteStartElement("Parameters");
            xmlWriter.WriteStartElement("EventLogSubscriptionParams");

            xmlWriter.WriteAttributeString("SubscriberId", SubscriberId ?? string.Empty);
            xmlWriter.WriteAttributeString("StorageType", StorageType.ToString());

            xmlWriter.WriteEndElement(); // EventLogSubscriptionParams
            xmlWriter.WriteEndElement(); // Parameters
            xmlWriter.WriteEndElement(); // Output
        }

        /// <summary>
        /// Creates a clone object.
        /// </summary>
        /// <returns></returns>
        public override object Clone()
        {
            return new LogConfigEventLogSubscriptionOutput(SubscriberId, StorageType);
        }
    }
}