XpandPwsh

1.201.4.1

Cmdlets/src/XpandPwsh.Cmdlets/Nuget/NugetExtensions.cs

                                using System;

using System.Collections.Generic;

using System.Linq;

using System.Reactive.Linq;

using System.Reactive.Threading.Tasks;

using System.Threading;

using System.Threading.Tasks;

using NuGet.Common;

using NuGet.Configuration;

using NuGet.Protocol.Core.Types;

namespace XpandPwsh.Cmdlets.Nuget{

    public static class NugetExtensions{

        public static async Task<Version[]> GetLatestMinors(this  List<Lazy<INuGetResourceProvider>> providers, string source, string name,int? top=3){

            var packageMetadata = providers.PackageMetadata(source, name).Replay().RefCount();

            await packageMetadata;

            var versions = packageMetadata.ToEnumerable().GroupBy(metadata => {

                    var version = metadata.Identity.Version.Version;

                    return (version.Major, version.Minor);

                })

                .SelectMany(_ => _.OrderByDescending(metadata => metadata.Identity.Version.Version)

                    .Take(1).Select(metadata => metadata.Identity.Version.Version));

            if (top.HasValue){

                versions = versions.Take(top.Value);

            }

            return versions.ToArray();

        }

        public static IObservable<IPackageSearchMetadata> PackageMetadata(this  List<Lazy<INuGetResourceProvider>> providers,string source,string name){

            var metadatas = new SourceRepository(new PackageSource(source), providers)

                .GetResourceAsync<PackageMetadataResource>().ToObservable()

                .SelectMany(resource => resource

                    .GetMetadataAsync(name, false, false,NullSourceCacheContext.Instance, NullLogger.Instance,CancellationToken.None).ToObservable()

                    .SelectMany(enumerable => enumerable.ToArray())

                );

            return metadatas;

        }

        public static IObservable<(string Id,Version Version)> ToPackageObject(this IObservable<IPackageSearchMetadata> source){

            return source.Select(metadata => (metadata.Identity.Id, metadata.Identity.Version.Version));

        }

        public static IObservable<IPackageSearchMetadata> ListPackages(this List<Lazy<INuGetResourceProvider>> providers, string source,string searchTerm=null){

            var sourceRepository = new SourceRepository(new PackageSource(source), providers);

            return sourceRepository.GetResourceAsync<ListResource>().ToObservable()

                .Select(resource =>

                    resource.ListAsync(searchTerm, false, false, false, NullLogger.Instance, CancellationToken.None)

                        .ToObservable()).Concat()

                .Select(async => async.GetEnumeratorAsync().ToObservable()).Concat()

                .Where(metadata => metadata != null);

        }

    }

}