// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
using System.Diagnostics;
using MSB = Microsoft.Build;
 
namespace Microsoft.CodeAnalysis.MSBuild
{
    internal class MSBuildDiagnosticLogger : MSB.Framework.ILogger
    {
        private string? _projectFilePath;
        private DiagnosticLog? _log;
        private MSB.Framework.IEventSource? _eventSource;
 
        public string? Parameters { get; set; }
        public MSB.Framework.LoggerVerbosity Verbosity { get; set; }
 
        public void SetProjectAndLog(string projectFilePath, DiagnosticLog log)
        {
            _projectFilePath = projectFilePath;
            _log = log;
        }
 
        private void OnErrorRaised(object sender, MSB.Framework.BuildErrorEventArgs e)
        {
            Debug.Assert(_projectFilePath != null);
            _log?.Add(new MSBuildDiagnosticLogItem(DiagnosticLogItemKind.Error, _projectFilePath, e.Message ?? "", e.File, e.LineNumber, e.ColumnNumber));
        }
 
        private void OnWarningRaised(object sender, MSB.Framework.BuildWarningEventArgs e)
        {
            Debug.Assert(_projectFilePath != null);
            _log?.Add(new MSBuildDiagnosticLogItem(DiagnosticLogItemKind.Warning, _projectFilePath, e.Message ?? "", e.File, e.LineNumber, e.ColumnNumber));
        }
 
        public void Initialize(MSB.Framework.IEventSource eventSource)
        {
            Debug.Assert(_eventSource == null);
 
            _eventSource = eventSource;
            _eventSource.ErrorRaised += OnErrorRaised;
            _eventSource.WarningRaised += OnWarningRaised;
        }
 
        public void Shutdown()
        {
            if (_eventSource != null)
            {
                _eventSource.ErrorRaised -= OnErrorRaised;
                _eventSource.WarningRaised -= OnWarningRaised;
 
                _eventSource = null;
 
                _projectFilePath = null;
                _log = null;
            }
        }
    }
}