Allow execution of multiple scripts

src/Program.cs

@@ -2,59 +2,84 @@
 using Cocona;
 using Spectre.Console;
 
+const int ScriptListSize = 15;
+const int ErrorExitCode = 1;
+
 var app = CoconaLiteApp.Create();
 
 app.AddCommand(RootCommand);
 app.Run();
 
 static void RootCommand(
-    [Option("dir", new[] { 'd' }, Description = "Directory from which search the scripts")] string directory = ".",
-    [Option("ext", Description = "Comma separated list of script extensions to search")] string extensions = "*",
-    [Option("elevated", new[] { 'e' }, Description = "Run the script with elevated privileges")] bool elevated = false,
-    [Option("depth")] int depth = 0)
+    [Option("extensions", new char[] { 'e' }, Description = "Comma separated list of script extensions to search")] string extensions = "*",
+    [Option("depth", new char[] { 'd' }, Description = "Folder depth of the search")] int depth = 0,
+    [Option("elevated", new char[] { 'E' }, Description = "Run the script with elevated privileges")] bool elevated = false,
+    [Option("multiple", new char[] { 'm' }, Description = "Execute multiple scripts")] bool multiple = false,
+    [Argument(Name = "Directory", Description = "Directory from which search the scripts")] string directory = ".")
 {
     if (!Directory.Exists(directory))
     {
-        AnsiConsole.Markup($"[red]The directory {directory} does not exist.[/]");
-        Environment.Exit(1);
+        AnsiConsole.Markup($"[red]The directory '{directory}' does not exist.[/]");
+        Environment.ExitCode = ErrorExitCode;
+        return;
     }
 
     var fileExtensions = extensions.Split(new[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries)
         .ToHashSet()
         .ToArray();
 
-    var finder = new ScriptFinder()
+    var finder = new ScriptFinder
     {
-        Depth = depth,
         Extensions = fileExtensions,
         RootFolder = directory,
+        Depth = depth
     };
 
     var files = finder.GetScriptFiles(fileExtensions);
 
     if (files.Length == 0)
     {
-        AnsiConsole.Markup($"[red]No scripts script files found in {directory} with extensions '{string.Join("|", fileExtensions)}'[/]");
-        Environment.Exit(1);
+        AnsiConsole.Markup($"[red]No scripts script files found in '{directory}' with extensions '{string.Join("|", fileExtensions)}'[/]");
+        Environment.ExitCode = ErrorExitCode;
+        return;
     }
 
-    var prompt = new SelectionPrompt<string>()
+    if (multiple)
+    {
+        var prompt = new MultiSelectionPrompt<FileInfo>()
+        .Title("Select scripts")
+        .NotRequired()
+        .PageSize(ScriptListSize)
+        .MoreChoicesText("[grey]Move up and down to reveal more options[/]")
+        .InstructionsText("[grey](Press [blue]<space>[/] to toggle a script, [green]<enter>[/] to accept)[/]")
+        .AddChoices(files);
+
+        var scripts = AnsiConsole.Prompt(prompt);
+
+        scripts.ForEach(ScriptExecutor.Exec);
+    }
+    else
+    {
+        var prompt = new SelectionPrompt<FileInfo>()
         .Title("Select a script")
-        .AddChoices(files.Select(x => x.FullName));
+        .PageSize(ScriptListSize)
+        .MoreChoicesText("[grey]Move up and down to reveal more options[/]")
+        .AddChoices(files);
 
-    var script = AnsiConsole.Prompt(prompt);        
+        var script = AnsiConsole.Prompt(prompt);
 
-    ScriptExecutor.Exec(script);
+        ScriptExecutor.Exec(script);
+    }
 };
 
 static class ScriptExecutor
 {
-    internal static void Exec(string filename)
+    internal static void Exec(FileInfo file)
     {
         var info = new ProcessStartInfo
         {
             FileName = "powershell.exe",
-            Arguments = $"-File {filename}",
+            Arguments = $"-File {file.FullName}",
             UseShellExecute = false,
         };
 
@@ -64,11 +89,11 @@ static class ScriptExecutor
     internal static void Exec(ProcessStartInfo info) => Process.Start(info)?.WaitForExit();
 }
 
-class ScriptFinder
+readonly struct ScriptFinder
 {
-    public string RootFolder { get; set; } = ".";
-    public string[] Extensions { get; set; } = new[] { "ps1", "*sh", "bat", "cmd" };
-    public int Depth { get; set; } = 0;
+    public string RootFolder { get; init; } = ".";
+    public string[] Extensions { get; init; } = new[] { "ps1", "*sh", "bat", "cmd" };
+    public int Depth { get; init; } = 0;
 
     private readonly EnumerationOptions _options;
 
@@ -82,7 +107,7 @@ class ScriptFinder
         };
     }
 
-    internal FileInfo[] GetScriptFiles(string extension)
+    internal readonly FileInfo[] GetScriptFiles(string extension)
     {
         try
         {
@@ -95,6 +120,6 @@ class ScriptFinder
         }
     }
 
-    internal FileInfo[] GetScriptFiles(string[] extensions) => 
-        extensions.Select(GetScriptFiles).SelectMany(x => x).ToArray();
+    internal readonly FileInfo[] GetScriptFiles() => 
+        Extensions.Select(GetScriptFiles).SelectMany(x => x).ToArray();
 }