// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Microsoft.Build.Framework;
using Microsoft.Build.Shared;
 
#nullable disable
 
namespace Microsoft.Build.BackEnd.Logging
{
    /// <summary>
    /// This class will throw an exception when it receives any event except for the build started or build finished event
    /// this logger is good to use if a distributed logger is attached but does not want to forward any events
    /// </summary>
    internal class NullCentralLogger : INodeLogger
    {
        #region Data
        private string _parameters;
        private LoggerVerbosity _verbosity;
        #endregion
 
        #region Properties
        public LoggerVerbosity Verbosity
        {
            get
            {
                return _verbosity;
            }
            set
            {
                _verbosity = value;
            }
        }
 
        public string Parameters
        {
            get
            {
                return _parameters;
            }
            set
            {
                _parameters = value;
            }
        }
        #endregion
 
        #region Methods
        public void Initialize(IEventSource eventSource, int nodeCount)
        {
            eventSource.AnyEventRaised += AnyEventRaisedHandler;
        }
 
        public void AnyEventRaisedHandler(object sender, BuildEventArgs e)
        {
            if (!(e is BuildStartedEventArgs) && !(e is BuildFinishedEventArgs))
            {
                ErrorUtilities.ThrowInvalidOperation("Should not receive any events other than build started or finished");
            }
        }
 
        public void Initialize(IEventSource eventSource)
        {
            Initialize(eventSource, 1);
        }
 
        public void Shutdown()
        {
            // do nothing
        }
        #endregion
    }
}