From 27a8ee4828423c4d973ff50fb664027199cf7b87 Mon Sep 17 00:00:00 2001
From: Sewer 56 <seweratwork@gmail.com>
Date: Tue, 23 Aug 2022 10:14:44 +0100
Subject: [PATCH] Added: Ability to fetch NuGet Package Details

---
 .../NuGetUpdateResolver.cs                     | 11 +++++++++++
 .../Utilities/NugetRepository.cs               | 16 ++++++++++++++++
 .../Resolvers/NuGetResolverTests.cs            | 18 ++++++++++++++++++
 3 files changed, 45 insertions(+)

diff --git a/Sewer56.Update/Resolvers/Sewer56.Update.Resolvers.NuGet/NuGetUpdateResolver.cs b/Sewer56.Update/Resolvers/Sewer56.Update.Resolvers.NuGet/NuGetUpdateResolver.cs
index b8fbfb2..7709525 100644
--- a/Sewer56.Update/Resolvers/Sewer56.Update.Resolvers.NuGet/NuGetUpdateResolver.cs
+++ b/Sewer56.Update/Resolvers/Sewer56.Update.Resolvers.NuGet/NuGetUpdateResolver.cs
@@ -6,6 +6,7 @@
 using System.Threading;
 using System.Threading.Tasks;
 using NuGet.Packaging.Core;
+using NuGet.Protocol.Core.Types;
 using NuGet.Versioning;
 using Sewer56.Update.Interfaces;
 using Sewer56.Update.Interfaces.Extensions;
@@ -66,4 +67,14 @@ public async Task<long> GetDownloadFileSizeAsync(NuGetVersion version, ReleaseMe
         var identity = new PackageIdentity(_resolverSettings.PackageId, version);
         return (await _resolverSettings.NugetRepository!.GetDownloadUrlUnsafeAsync(identity, token))!;
     }
+
+    /// <summary>
+    /// Gets the full package details for a given version of the package.
+    /// </summary>
+    /// <param name="version">Version to get the details for.</param>
+    /// <param name="token">Token to cancel the fetch operation.</param>
+    public async Task<IPackageSearchMetadata?> GetPackageDetailsAsync(NuGetVersion version, CancellationToken token = default)
+    {
+        return await _resolverSettings.NugetRepository!.GetPackageDetailsAsync(new PackageIdentity(_resolverSettings.PackageId, version), token);
+    }
 }
\ No newline at end of file
diff --git a/Sewer56.Update/Resolvers/Sewer56.Update.Resolvers.NuGet/Utilities/NugetRepository.cs b/Sewer56.Update/Resolvers/Sewer56.Update.Resolvers.NuGet/Utilities/NugetRepository.cs
index 39ed2bf..0d173ce 100644
--- a/Sewer56.Update/Resolvers/Sewer56.Update.Resolvers.NuGet/Utilities/NugetRepository.cs
+++ b/Sewer56.Update/Resolvers/Sewer56.Update.Resolvers.NuGet/Utilities/NugetRepository.cs
@@ -78,6 +78,22 @@ public async Task<IEnumerable<IPackageSearchMetadata>> GetPackageDetailsAsync(st
         catch (Exception) { return new IPackageSearchMetadata[0]; }
     }
 
+    /// <summary>
+    /// Retrieves the details of an individual package.
+    /// </summary>
+    /// <param name="identity">Uniquely identifies the package.</param>
+    /// <param name="token">A cancellation token to allow cancellation of the task.</param>
+    /// <returns>Return contains an array of versions for this package.</returns>
+    public async Task<IPackageSearchMetadata?> GetPackageDetailsAsync(PackageIdentity identity, CancellationToken token = default)
+    {
+        try
+        {
+            var metadataResource = await _packageMetadataResource;
+            return await metadataResource.GetMetadataAsync(identity, _sourceCacheContext, _nullLogger, token).ConfigureAwait(false);
+        }
+        catch (Exception) { return null; }
+    }
+
     /// <summary>
     /// [WARNING: REFLECTION]
     /// Uses reflection to get a URL to the package download.
diff --git a/Sewer56.Update/Sewer56.Update.Tests/Resolvers/NuGetResolverTests.cs b/Sewer56.Update/Sewer56.Update.Tests/Resolvers/NuGetResolverTests.cs
index 4a8feff..3259496 100644
--- a/Sewer56.Update/Sewer56.Update.Tests/Resolvers/NuGetResolverTests.cs
+++ b/Sewer56.Update/Sewer56.Update.Tests/Resolvers/NuGetResolverTests.cs
@@ -104,4 +104,22 @@ public async Task GetPackageVersionsAsync_CanGetDownloadUrl()
         Assert.True(!string.IsNullOrEmpty(downloadUrl));
     }
 
+    [Fact]
+    public async Task GetPackageVersionsAsync_CanGetPackageDetails()
+    {
+        var commonResolverSettings = new CommonPackageResolverSettings()
+        {
+            AllowPrereleases = true
+        };
+
+        // Act
+        var resolver = new NuGetUpdateResolver(ResolverConfiguration, commonResolverSettings);
+        var versions = await resolver.GetPackageVersionsAsync();
+
+        var packageDetails = await resolver.GetPackageDetailsAsync(versions[0]);
+
+        // Assert
+        Assert.NotNull(packageDetails);
+    }
+
 }
\ No newline at end of file