noz-cli/NozCli/Commands/ConfigCommand.cs

using NozCli.Repl;
using Spectre.Console;

namespace NozCli.Commands;

public class ConfigCommand : ICommand
{
    public string Name        => "config";
    public string Description => "Show or set CLI configuration (editor, code-editor)";
    public string Usage       => "config [editor|code-editor] [value]";

    public Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
    {
        var cfg = ctx.Config;

        if (args.Length == 0)
        {
            // Show current config
            var editorVal     = cfg.Editor     ?? "[dim](auto)[/]";
            var codeEditorVal = cfg.CodeEditor ?? "[dim](auto)[/]";

            AnsiConsole.WriteLine();
            AnsiConsole.MarkupLine($"  [dim grey]editor[/]       {editorVal}");
            AnsiConsole.MarkupLine($"  [dim grey]code-editor[/]  {codeEditorVal}");
            AnsiConsole.MarkupLine($"  [dim grey]server[/]       {cfg.ServerUrl}");
            AnsiConsole.WriteLine();
            AnsiConsole.MarkupLine("[dim]Set with: config editor <nano|vim|vi|notepad>[/]");
            AnsiConsole.MarkupLine("[dim]          config code-editor <code|zed|subl|vim>[/]");
            AnsiConsole.WriteLine();
            return Task.CompletedTask;
        }

        var key   = args[0].ToLowerInvariant();
        var value = args.Length > 1 ? args[1] : null;

        if (value is null)
        {
            AnsiConsole.MarkupLine($"[red]Usage: config {key} <value>[/]");
            return Task.CompletedTask;
        }

        switch (key)
        {
            case "editor":
                cfg.Editor = value;
                cfg.Save();
                AnsiConsole.MarkupLine($"[green]✓[/] editor → [white]{value}[/]");
                break;

            case "code-editor":
            case "codeeditor":
                cfg.CodeEditor = value;
                cfg.Save();
                AnsiConsole.MarkupLine($"[green]✓[/] code-editor → [white]{value}[/]");
                break;

            default:
                AnsiConsole.MarkupLine($"[red]Unknown key:[/] {key}  [dim](editor, code-editor)[/]");
                break;
        }

        return Task.CompletedTask;
    }
}