using System;
using System.Xml;

namespace DTS.DASLib.Service
{
    /// <summary>
    /// Class for storing/applying Streaming output settings as a channel
    /// </summary>
    [Serializable]
    public class StreamInputDASChannel : InputDASChannel
    {
        /// <summary>
        /// CTOR to populate a channel's owning module and channel WRT that module.  Calls 
        /// base class CTOR.
        /// </summary>
        /// <param name="owner">Module that contains this channel.</param>
        /// <param name="channelNumber">ChannelNumber of this channel WRT owning module.</param>
        public StreamInputDASChannel(DASModule owner, int channelNumber)
            : base(owner, channelNumber)
        {
        }

        public StreamInputDASChannel()
        {
        }
        /// <summary>
        /// Serial number of the sensor.
        /// </summary>
        public string SerialNumber { get; set; }

        /// <summary>
        /// The name of the hardware channel
        /// </summary>
        public string HardwareChannelName { get; set; }

        public string UDPAddress { get; set; } = string.Empty;

        /// <summary>
        /// If the channel has a serial number in the SerialNumber field, it is "Configured".
        /// </summary>
        public override bool IsConfigured()
        {
            return !string.IsNullOrEmpty(SerialNumber);
        }

        public override string ToString()
        {
            return $"Stream{ModuleChannelNumber}";
        }
        public override void WriteXml(XmlWriter writer)
        {
            base.WriteXml(writer);

            // SerialNumber
            XMLHelper.PutString(writer, "SerialNumber", SerialNumber);
            XMLHelper.PutString(writer, "HardwareChannelName", HardwareChannelName);
            XMLHelper.PutString(writer, "UDPAddress", UDPAddress.ToString());

        }
        private const string SERIALNUMBER_TAG = "SerialNumber";
        private const string HARDWARECHANNELNAME_TAG = "HardwareChannelName";
        private const string UDPADDRESS_TAG = "UDPAddress";
        protected override void HandleElement(XmlReader reader)
        {
            base.HandleElement(reader);
            if (reader.NodeType == XmlNodeType.Element)
            {
                var value = string.Empty;
                switch (reader.Name)
                {
                    case SERIALNUMBER_TAG:
                        SerialNumber = XMLHelper.GetString(reader);
                        break;
                    case HARDWARECHANNELNAME_TAG:
                        HardwareChannelName = XMLHelper.GetString(reader);
                        break;
                    case UDPADDRESS_TAG:
                        UDPAddress = XMLHelper.GetString(reader);
                        break;
                    default:
                        // let child handle it
                        return;
                }
            }
        }
    }
}