// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.Diagnostics.CodeAnalysis;
using Microsoft.Build.Construction;
using Microsoft.Build.Evaluation;
using Microsoft.DotNet.Cli.Commands.Package;
using Microsoft.DotNet.Cli.Commands.Run;
using Microsoft.DotNet.FileBasedPrograms;
using NuGet.CommandLine.XPlat;

namespace Microsoft.DotNet.Cli.Commands.NuGet;

internal sealed class NuGetVirtualProjectBuilder : IVirtualProjectBuilder
{
    public static NuGetVirtualProjectBuilder Instance => field ??= new();

    private NuGetVirtualProjectBuilder() { }

    public bool IsValidEntryPointPath(string entryPointFilePath) => VirtualProjectBuilder.IsValidEntryPointPath(entryPointFilePath);

    public string GetVirtualProjectPath(string entryPointFilePath) => VirtualProjectBuilder.GetVirtualProjectPath(entryPointFilePath);

    [UnconditionalSuppressMessage("AOT", "IL3050:Calling members annotated with 'RequiresDynamicCodeAttribute' may break functionality when AOT compiling.", Justification = "Can't change the annotation on the NuGet-owned interface definition.")]
    public ProjectRootElement CreateProjectRootElement(string entryPointFilePath, ProjectCollection projectCollection)
    {
        if (!Path.IsPathFullyQualified(entryPointFilePath))
        {
            throw new ArgumentException($"'{entryPointFilePath}' is not a fully qualified path.", paramName: nameof(entryPointFilePath));
        }

        var builder = new VirtualProjectBuilder(BuildService.Instance, entryPointFilePath, VirtualProjectBuildingCommand.TargetFramework);

        var result = builder.CreateProjectInstanceAsync(
            projectCollection.Wrap(),
            ErrorReporters.IgnoringReporter).AsTask().GetAwaiter().GetResult();

        return result.ProjectRootElement.Unwrap();
    }

    [UnconditionalSuppressMessage("AOT", "IL3050:Calling members annotated with 'RequiresDynamicCodeAttribute' may break functionality when AOT compiling.", Justification = "Can't change the annotation on the NuGet-owned interface definition.")]
    public void SaveProject(string entryPointFilePath, ProjectRootElement projectRootElement)
    {
        VirtualProjectPackageReflector.ReflectChangesToDirectives(projectRootElement, entryPointFilePath);
    }
}