// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

namespace MemoryStreamVisualizer;

using System.IO;
using System.Runtime.Serialization;
using System.Windows;
using Microsoft.VisualStudio.Extensibility.UI;

/// <summary>
/// ViewModel class representing the data contained by a <see cref="MemoryStream"/>.
/// </summary>
[DataContract]
public class MemoryStreamData : NotifyPropertyChangedObject
{
    private long length;
    private long position;
    private Visibility loadingVisibility = Visibility.Visible;

    /// <summary>
    /// Gets or sets the length of the <see cref="MemoryStream"/>.
    /// </summary>
    [DataMember]
    public long Length
    {
        get => this.length;
        set
        {
            if (this.SetProperty(ref this.length, value))
            {
                this.RaiseNotifyPropertyChangedEvent(nameof(this.HexLength));
            }
        }
    }

    /// <summary>
    /// Gets the length of the <see cref="MemoryStream"/> in hex format.
    /// </summary>
    [DataMember]
    public string HexLength => $"{this.length:X}h";

    /// <summary>
    /// Gets or sets the current position of the <see cref="MemoryStream"/>.
    /// </summary>
    [DataMember]
    public long Position
    {
        get => this.position;
        set
        {
            if (this.SetProperty(ref this.position, value))
            {
                this.RaiseNotifyPropertyChangedEvent(nameof(this.HexPosition));
            }
        }
    }

    /// <summary>
    /// Gets the current position of the <see cref="MemoryStream"/> in hex format.
    /// </summary>
    [DataMember]
    public string HexPosition => $"{this.position:X}h";

    /// <summary>
    /// Gets the data currently contained in the <see cref="MemoryStream"/>.
    /// </summary>
    [DataMember]
    public ObservableList<HexEditorRow> Data { get; } = new();

    /// <summary>
    /// Gets or sets whether the loading bar should be visible.
    /// </summary>
    [DataMember]
    public Visibility LoadingVisibility
    {
        get => this.loadingVisibility;
        set => this.SetProperty(ref this.loadingVisibility, value);
    }
}