using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Media;
using System.Xml.Serialization;
using Tango.BL.Entities;
using Tango.SharedUI.Helpers;

namespace Tango.MachineStudio.Technician.TechItems
{
    /// <summary>
    /// Represents a digital output pin item.
    /// </summary>
    /// <seealso cref="Tango.MachineStudio.Technician.TechItems.TechItem" />
    [TechItem(1, true)]
    public class DigitalOutItem : TechItem
    {
        /// <summary>
        /// Occurs when the user has changed the current value.
        /// </summary>
        public event EventHandler<bool> ValueChanged;

        private TechIo _techIo;
        /// <summary>
        /// Gets or sets the db tech item.
        /// </summary>
        [XmlIgnore]
        public TechIo TechIo
        {
            get { return _techIo; }
            set { _techIo = value; RaisePropertyChangedAuto(); TechName = _techIo != null ? _techIo.InterfaceName : null; ItemGuid = value != null ? value.Guid : null; }
        }

        private bool _value;
        /// <summary>
        /// Gets or sets a value indicating whether this <see cref="DigitalOutItem"/> is on.
        /// </summary>
        [XmlIgnore]
        public bool Value
        {
            get { return _value; }
            set { _value = value; RaisePropertyChangedAuto(); ValueChanged?.Invoke(this, value); }
        }

        private bool _effectiveValue;
        /// <summary>
        /// Gets or sets the effective value received from the embedded device.
        /// </summary>
        [XmlIgnore]
        public bool EffectiveValue
        {
            get { return _effectiveValue; }
            set
            {
                if (_effectiveValue != value)
                {
                    _effectiveValue = value;
                    RaisePropertyChangedAuto();
                    _value = value;
                    RaisePropertyChanged(nameof(Value));
                }
            }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="DigitalOutItem"/> class.
        /// </summary>
        public DigitalOutItem() : base()
        {
            Name = "Digital Output Interface";
            Description = "Digital Output Interface Controller";
            Image = ResourceHelper.GetImageFromResources("Images/binary.png");
            Color = Colors.White;
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="DigitalOutItem"/> class.
        /// </summary>
        /// <param name="techIo">The db tech item.</param>
        public DigitalOutItem(TechIo techIo) : this()
        {
            TechIo = techIo;
        }

        /// <summary>
        /// Clones this instance.
        /// </summary>
        /// <returns></returns>
        public override TechItem Clone()
        {
            DigitalOutItem cloned = base.Clone() as DigitalOutItem;
            cloned.TechIo = TechIo;
            return cloned;
        }
    }
}