using CommunityToolkit.Mvvm.ComponentModel;
using MultiTerm.Protocols.Model;
using System.Text;

namespace MultiTerm.Core.ViewModel;

public partial class ByteDataViewModel : ObservableObject, IDataViewModel, IComparable<ByteDataViewModel>
{
    /// <summary>
    /// Object of data model.
    /// </summary>
    private readonly ExtendedByte data;

    #region IDataViewModel Implementation

    [ObservableProperty]
    private int lineIdentifier;

    [ObservableProperty]
    private TimeOnly time;

    [ObservableProperty]
    private string displayStringChar = String.Empty;

    [ObservableProperty]
    private string displayStringHex = String.Empty;

    [ObservableProperty]
    private string displayStringBin = String.Empty;

    #endregion

    /// <summary>
    /// Allows access to the low level data byte.
    /// </summary>
    public byte Byte => this.data.Byte;

    /// <summary>
    /// Instanciates new <see cref="ByteDataViewModel"/>.
    /// Initializes internal variables with data according to <paramref name="extendedByte"/>.
    /// </summary>
    /// <param name="extendedByte">data</param>
    /// <param name="lineIdentifier">identifies line in which this byte is located</param>
    public ByteDataViewModel(ExtendedByte extendedByte, int lineIdentifier)
    {
        this.data = extendedByte;
        this.lineIdentifier = lineIdentifier;
        this.DisplayStringChar = extendedByte.ToCharacterString();
        this.DisplayStringHex = extendedByte.ToHexString();
        this.DisplayStringBin = extendedByte.ToBinaryString();
        this.Time = extendedByte.Time;
    }

    #region IComparable Implementation
    /// <summary>
    /// IComparable method. To allow sorting <see cref="ByteDataViewModel"/>
    /// </summary>
    /// <param name="other">compared element</param>
    /// <returns></returns>
    public int CompareTo(ByteDataViewModel? other)
    {
        if(other == null)
            return 1;

        if (other.Time.Ticks > this.Time.Ticks)
            return -1;
        else if(this.Time.Ticks > other.Time.Ticks)
            return 1;
        else  // equal
            return 0;
    }

    #endregion
}