// 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 Microsoft.Extensions.DependencyModel;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace Microsoft.DotNet.SharedFramework.Sdk;

[MSBuildMultiThreadableTask]
public class GeneratePlatformManifestEntriesFromFileList : Task, IMultiThreadableTask
{
    /// <summary>Injected by MSBuild so paths resolve against the project directory in multithreaded builds.</summary>
    public TaskEnvironment TaskEnvironment { get; set; } = TaskEnvironment.Fallback;

    [Required]
    public ITaskItem[] Files { get; set; }

    [Output]
    public ITaskItem[] PlatformManifestEntries { get; set; }

    public override bool Execute()
    {
        var entries = new List<PlatformManifestEntry>();
        foreach (var file in Files)
        {
            FileInfo originalFilePath = new(TaskEnvironment.GetAbsolutePath(file.GetMetadata("OriginalFilePath")));
            entries.Add(new PlatformManifestEntry
            {
                Name = file.ItemSpec,
                AssemblyVersion = FileUtilities.GetAssemblyName(originalFilePath)?.Version.ToString() ?? string.Empty,
                FileVersion = FileUtilities.GetFileVersion(originalFilePath)?.ToString() ?? string.Empty
            });
        }

        PlatformManifestEntries = entries.Select(entry =>
        {
            var item = new TaskItem(entry.Name);
            item.SetMetadata("AssemblyVersion", entry.AssemblyVersion);
            item.SetMetadata("FileVersion", entry.FileVersion);
            return item;
        }).ToArray();
        return true;
    }
}