// 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.Utilities;
using NuGet.Versioning;

namespace Microsoft.DotNet.Arcade.Sdk;

[MSBuildMultiThreadableTask]
public class CompareVersions : Task
{
    [Required]
    public string Left { get; set; }

    [Required]
    public string Right { get; set; }

    [Output]
    public int Result { get; set; }

    public override bool Execute()
    {
        ExecuteImpl();
        return !Log.HasLoggedErrors;
    }

    private void ExecuteImpl()
    {
        if (!SemanticVersion.TryParse(Left, out var left))
        {
            Log.LogError($"Invalid version: '{Left}'");
            return;
        }

        if (!SemanticVersion.TryParse(Right, out var right))
        {
            Log.LogError($"Invalid version: '{Right}'");
            return;
        }

        Result = left.CompareTo(right);
    }
}