feat: Check for latest version of Uno.Check

UnoCheck/CheckCommand.cs

@@ -1,5 +1,6 @@
 using DotNetCheck.Checkups;
 using DotNetCheck.Models;
+using NuGet.Configuration;
 using NuGet.Versioning;
 using Spectre.Console;
 using Spectre.Console.Cli;
@@ -37,6 +38,11 @@ public override async Task<int> ExecuteAsync(CommandContext context, CheckSettin
 			AnsiConsole.MarkupLine("If problems are detected, it will offer the option to try and fix them for you, or suggest a way to fix them yourself.");
 			AnsiConsole.Write(new Rule());
 
+			if (await NeedsToolUpdateAsync(settings))
+			{
+				return 1;
+			}
+
 			if (!Util.IsAdmin() && Util.IsWindows)
 			{
 				var suTxt = Util.IsWindows ? "Administrator" : "Superuser (su)";
@@ -154,7 +160,7 @@ public override async Task<int> ExecuteAsync(CommandContext context, CheckSettin
 					continue;
 				}
 
-				checkup.OnStatusUpdated += checkupStatusUpdated;
+				checkup.OnStatusUpdated += CheckupStatusUpdated;
 
 				AnsiConsole.WriteLine();
 				AnsiConsole.MarkupLine($"[bold]{Icon.Checking} " + checkup.Title + " Checkup[/]...");
@@ -221,7 +227,7 @@ public override async Task<int> ExecuteAsync(CommandContext context, CheckSettin
 						{
 							try
 							{
-								remedy.OnStatusUpdated += remedyStatusUpdated;
+								remedy.OnStatusUpdated += RemedyStatusUpdated;
 
 								AnsiConsole.MarkupLine($"{Icon.Thinking} Attempting to fix: " + checkup.Title);
 
@@ -242,7 +248,7 @@ public override async Task<int> ExecuteAsync(CommandContext context, CheckSettin
 							}
 							finally
 							{
-								remedy.OnStatusUpdated -= remedyStatusUpdated;
+								remedy.OnStatusUpdated -= RemedyStatusUpdated;
 							}
 						}
 
@@ -252,7 +258,7 @@ public override async Task<int> ExecuteAsync(CommandContext context, CheckSettin
 					}
 				}
 
-				checkup.OnStatusUpdated -= checkupStatusUpdated;
+				checkup.OnStatusUpdated -= CheckupStatusUpdated;
 			}
 
 			AnsiConsole.Write(new Rule());
@@ -304,7 +310,47 @@ public override async Task<int> ExecuteAsync(CommandContext context, CheckSettin
 			return exitCode;
 		}
 
-		void checkupStatusUpdated(object sender, CheckupStatusEventArgs e)
+		private async Task<bool> NeedsToolUpdateAsync(CheckSettings settings)
+		{
+			if (settings.Manifest is not null && !settings.CI)
+			{
+				return false;
+			}
+
+			bool needsToUpdate = false;
+			var currentVersion = ToolInfo.CurrentVersion;
+			NuGetVersion latestVersion = null;
+			try
+			{
+				latestVersion = await ToolInfo.GetLatestVersion(currentVersion.IsPrerelease);
+			}
+			catch
+			{
+				AnsiConsole.MarkupLine($"[bold yellow]{Icon.Warning} Could not check for latest version of uno-check on NuGet.org. The currently installed version may be out of date.[/]");
+				AnsiConsole.WriteLine();
+				AnsiConsole.Write(new Rule());
+			}
+
+			if (latestVersion is not null && currentVersion < latestVersion)
+			{
+				AnsiConsole.MarkupLine($"[bold yellow]{Icon.Warning} Your uno-check version is not up to date. The latest version is {latestVersion}. You can use the following command to update:[/]");
+				AnsiConsole.WriteLine();
+				AnsiConsole.MarkupLine($"dotnet tool update --global Uno.Check --version {latestVersion}");
+				AnsiConsole.WriteLine();
+
+				AnsiConsole.Write(new Rule());
+			}
+
+			if (latestVersion is null || currentVersion < latestVersion)
+			{
+				var shouldContinue = AnsiConsole.Confirm("Would you still like to continue with the currently installed version?", false);
+				needsToUpdate = !shouldContinue;
+            }
+
+			return needsToUpdate;
+		}
+
+		private void CheckupStatusUpdated(object sender, CheckupStatusEventArgs e)
 		{
 			var msg = "";
 			if (e.Status == Models.Status.Error)
@@ -319,7 +365,7 @@ void checkupStatusUpdated(object sender, CheckupStatusEventArgs e)
 			AnsiConsole.MarkupLine("  " + msg);
 		}
 
-		void remedyStatusUpdated(object sender, RemedyStatusEventArgs e)
+		private void RemedyStatusUpdated(object sender, RemedyStatusEventArgs e)
 		{
 			AnsiConsole.MarkupLine("  " + e.Message);
 		}

UnoCheck/ToolInfo.cs

@@ -1,10 +1,14 @@
-using NuGet.Versioning;
+using NuGet.Common;
+using NuGet.Protocol;
+using NuGet.Protocol.Core.Types;
+using NuGet.Versioning;
 using Spectre.Console;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace DotNetCheck
@@ -38,8 +42,8 @@ public class ToolInfo
 			return await Manifest.Manifest.FromFileOrUrl(f);
 		}
 
-		public static string CurrentVersion
-			=> NuGetVersion.Parse(FileVersionInfo.GetVersionInfo(typeof(ToolInfo).Assembly.Location).FileVersion).ToString();
+		public static NuGetVersion CurrentVersion
+			=> NuGetVersion.Parse(FileVersionInfo.GetVersionInfo(typeof(ToolInfo).Assembly.Location).FileVersion);
 
 		public static bool Validate(Manifest.Manifest manifest)
 		{
@@ -80,6 +84,27 @@ public static bool Validate(Manifest.Manifest manifest)
 			return true;
 		}
 
+        public static async Task<NuGetVersion> GetLatestVersion(bool isPrerelease)
+		{
+            // package name and current version
+            string packageName = "Uno.Check";
+
+			// create a source repository
+            var source = Repository.Factory.GetCoreV3("https://api.nuget.org/v3/index.json");
+
+            // check for a newer version
+            var packageMetadataResource = await source.GetResourceAsync<PackageMetadataResource>();
+			var packageMetadata = await packageMetadataResource.GetMetadataAsync(
+				packageName,
+				includePrerelease: isPrerelease,
+				includeUnlisted: false,
+				new SourceCacheContext(),
+				NullLogger.Instance,
+				CancellationToken.None);
+			var latestVersion = packageMetadata.Select(p => p.Identity.Version).Max();
+			return latestVersion;
+        }
+
 		public static void ExitPrompt(bool nonInteractive)
 		{
 			if (!nonInteractive)