truly override help

Author: neuecc

sandbox/SingleContainedApp/Program.cs

@@ -48,11 +48,25 @@ public async Task Timer([Option(0)]uint waitSeconds)
         }
     }
 
+    public class OverrideCheck : BatchBase
+    {
+        [Command(new[] { "help", "-h", "-help", "--help" }, "show help")]
+        public void Help()
+        {
+            Console.WriteLine("Usage: base64urls [-version] [-help] [decode|encode|escape|unescape] [args]");
+            Console.WriteLine("E.g., run this: base64urls decode QyMgaXMgYXdlc29tZQ==");
+            Console.WriteLine("E.g., run this: base64urls encode \"C# is awesome.\"");
+            Console.WriteLine("E.g., run this: base64urls escape \"This+is/goingto+escape==\"");
+            Console.WriteLine("E.g., run this: base64urls unescape \"This-is_goingto-escape\"");
+        }
+    }
+
     class Program
     {
         static async Task Main(string[] args)
         {
-            await new HostBuilder().RunBatchEngineAsync<MyFirstBatch>(args);
+            args = new string[] { };
+            await new HostBuilder().RunBatchEngineAsync<OverrideCheck>(args);
         }
     }
 }

src/MicroBatchFramework/BatchEngineHostBuilderExtensions.cs

@@ -101,13 +101,21 @@ public static IHostBuilder UseBatchEngine<T>(this IHostBuilder hostBuilder, stri
             {
                 if (defaultMethod == null || (defaultMethod.GetParameters().Length != 0 && !defaultMethod.GetParameters().All(x => x.HasDefaultValue)))
                 {
-                    Console.WriteLine(BuildHelpParameter(method));
-                    hostBuilder.ConfigureServices(services =>
+                    if (!hasHelp)
                     {
-                        services.AddOptions<ConsoleLifetimeOptions>().Configure(x => x.SuppressStatusMessages = true);
-                        services.AddSingleton<IHostedService, EmptyHostedService>();
-                    });
-                    return hostBuilder;
+                        Console.WriteLine(BuildHelpParameter(method));
+                        hostBuilder.ConfigureServices(services =>
+                        {
+                            services.AddOptions<ConsoleLifetimeOptions>().Configure(x => x.SuppressStatusMessages = true);
+                            services.AddSingleton<IHostedService, EmptyHostedService>();
+                        });
+                        return hostBuilder;
+                    }
+                    else
+                    {
+                        // override default Help
+                        args = new string[] { "help" };
+                    }
                 }
             }