using System;
using System.Xml;
using Aitex.Core.Common.DeviceData;
using Aitex.Core.RT.DataCenter;
using Aitex.Core.RT.Device;
using Aitex.Core.RT.IOCore;
using Aitex.Core.Util;

namespace Virgo_DRT.Devices.IODevices
{
    public class IoPressureMeter : BaseDevice, IDevice
    {
        public enum UnitType
        {
            Torr,
            Pascal,
            Mbar,
            Pascal972B,
            mTorr,
        }

        public double Value
        {
            get
            {
                byte[] high = BitConverter.GetBytes(_ai.Buffer[_ai.Index]);
                byte[] low = BitConverter.GetBytes(_ai.Buffer[_ai.Index + 1]);
                float pressure = BitConverter.ToSingle(new[] { high[0], high[1], low[0], low[1] }, 0);

                return pressure;
            }
        }

        public string Unit { get; set; }

        private readonly AIAccessor _ai = null;

        //private double rangeMin = Int16.MinValue * 0.1;
        //private double rangeMax = Int16.MaxValue * 0.9;
        private readonly double min = short.MinValue * 0.1;
        private readonly double max = short.MaxValue * 0.9;

        public IoPressureMeter(string module, XmlElement node, string ioModule = "")
        {
            base.Module = module;
            Name = node.GetAttribute("id");
            Display = node.GetAttribute("display");
            DeviceID = node.GetAttribute("schematicId");

            Unit = node.GetAttribute("unit");

            _ai = ParseAiNode("aiValue", node, ioModule);

            //Full Scale 0-10V
            this.min = short.MaxValue * min / 10.0;
            this.max = short.MaxValue * max / 10.0;
        }

        public bool Initialize()
        {
            DATA.Subscribe($"{Module}.{Name}.Value", () => Value);

            DATA.Subscribe($"{Module}.{Name}", () =>
            {
                AITPressureMeterData data = new AITPressureMeterData()
                {
                    DeviceName = Name,
                    DeviceSchematicId = DeviceID,
                    DisplayName = Display,
                    FeedBack = Value,
                    Unit = Unit,
                    FormatString = "F0",
                };

                return data;
            }, SubscriptionAttribute.FLAG.IgnoreSaveDB);

            return true;
        }

        public void Terminate()
        {
        }

        public void Monitor()
        {
        }

        public void Reset()
        {
        }
    }
}