// 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 System.IO;
using XliffTasks.Model;

namespace XliffTasks.Tasks;

[MSBuildMultiThreadableTask]
public sealed class SortXlf : XlfTask
{
    [Required]
    public ITaskItem[] Sources { get; set; }

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

    protected override void ExecuteCore()
    {
        foreach (ITaskItem item in Sources)
        {
            string sourceDocumentPath = item.GetMetadataOrDefault(MetadataKey.SourceDocumentPath, item.ItemSpec);

            foreach (string language in Languages)
            {
                string xlfPath = XlfTask.GetXlfPath(sourceDocumentPath, language);
                XlfDocument xlfDocument;
                AbsolutePath xlfAbsolutePath;

                try
                {
                    xlfAbsolutePath = TaskEnvironment.GetAbsolutePath(xlfPath);
                    xlfDocument = XlfTask.LoadXlfDocument(xlfAbsolutePath);
                }
                catch (FileNotFoundException)
                {
                    // If the file doesn't exist, we don't need to worry about sorting it.
                    continue;
                }

                bool modified = xlfDocument.Sort();
                if (!modified)
                {
                    continue; // no changes
                }

                Directory.CreateDirectory(Path.GetDirectoryName(xlfAbsolutePath));
                xlfDocument.Save(new FileInfo(xlfAbsolutePath));
            }
        }
    }
}