// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

namespace Microsoft.Build.BackEnd;

/// <summary>
/// Response packet from owning worker node to TaskHost with the core allocation result.
/// For RequestCores: <see cref="GrantedCores"/> is the number of cores granted.
/// For ReleaseCores: <see cref="GrantedCores"/> is 0 (acknowledgment only).
/// </summary>
internal class TaskHostCoresResponse : INodePacket, ITaskHostCallbackPacket
{
    private int _requestId;
    private int _grantedCores;

    public TaskHostCoresResponse()
    {
    }

    public TaskHostCoresResponse(int requestId, int grantedCores)
    {
        _requestId = requestId;
        _grantedCores = grantedCores;
    }

    public NodePacketType Type => NodePacketType.TaskHostCoresResponse;

    public int RequestId
    {
        get => _requestId;
        set => _requestId = value;
    }

    /// <summary>
    /// The number of cores granted by the scheduler.
    /// For ReleaseCores responses, this is 0.
    /// </summary>
    public int GrantedCores => _grantedCores;

    public void Translate(ITranslator translator)
    {
        translator.Translate(ref _requestId);
        translator.Translate(ref _grantedCores);
    }

    internal static INodePacket FactoryForDeserialization(ITranslator translator)
    {
        var packet = new TaskHostCoresResponse();
        packet.Translate(translator);
        return packet;
    }
}