namespace OINA.Extender.WPF.Testharness
{
    using System;
    using System.ComponentModel;
    using OINA.Extender.Acquisition.Ed;
    using OINA.Extender.Data.Ed;

    /// <summary>
    /// Item to encapsulate an acquisition
    /// </summary>
    public class AcquisitionItem : INotifyPropertyChanged
    {
        /// <summary>
        /// Gets the ed spectrum.
        /// </summary>
        /// <value>
        /// The ed spectrum.
        /// </value>
        public IEdSpectrum EdSpectrum { get; private set; }

        /// <summary>
        /// Gets the label.
        /// </summary>
        /// <value>
        /// The label.
        /// </value>
        public string Label
        {
            get { return this.EdSpectrum.Label; }
        }

        /// <summary>
        /// Gets the aquisition mode.
        /// </summary>
        /// <value>
        /// The aquisition mode.
        /// </value>
        public EdAcquireMode AcquisitionMode { get; private set; }

        /// <summary>
        /// Gets the aquisition time.
        /// </summary>
        /// <value>
        /// The aquisition time.
        /// </value>
        public double AcquisitionTime { get; private set; }

        /// <summary>
        /// Gets the current progress.
        /// </summary>
        /// <value>
        /// The current progress.
        /// </value>
        public double CurrentProgress
        {
            get
            {
                if (this.AcquisitionMode == EdAcquireMode.LiveTime)
                {
                    return this.EdSpectrum.LiveTimeSeconds * 1000.0;
                }
                else
                {
                    return this.EdSpectrum.RealTimeSeconds * 1000.0;
                }
            }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="AcquisitionItem"/> class.
        /// </summary>
        /// <param name="edSpectrum">The ed spectrum.</param>
        /// <param name="mode">The mode.</param>
        /// <param name="acquisitionTime">The aquisition time.</param>
        public AcquisitionItem(IEdSpectrum edSpectrum, EdAcquireMode mode, double acquisitionTime)
        {
            this.EdSpectrum = edSpectrum;
            this.AcquisitionMode = mode;
            this.AcquisitionTime = acquisitionTime;

            this.EdSpectrum.DataChanged += this.OnEdSpectrumDataChanged;
        }

        /// <summary>
        /// Called when [ed spectrum data changed].
        /// </summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        public void OnEdSpectrumDataChanged(object sender, EventArgs e)
        {
            this.RaisePropertyChangedEvent(nameof(this.CurrentProgress));
        }

        /// <summary>
        /// Occurs when a property value changes.
        /// </summary>
        public event PropertyChangedEventHandler PropertyChanged;

        /// <summary>
        /// Raises the property changed event.
        /// </summary>
        /// <param name="propertyName">Name of the property.</param>
        private void RaisePropertyChangedEvent(string propertyName)
        {
            if (this.PropertyChanged != null)
            {
                this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }
}