import type { Command } from "commander";
import type { CommandModule, RuntimeServices } from "../../runtime/types.js";
import { presentDemoIntro, presentDemoSelection } from "./presenter.js";
import { createDemoViewModel, selectDemoProfile } from "./use-case.js";

export function createDemoModule(): CommandModule {
  return {
    register(program: Command, services: RuntimeServices) {
      program
        .command("demo")
        .description("Preview the reusable terminal UI patterns in this template.")
        .action(async () => {
          const viewModel = createDemoViewModel(services);
          presentDemoIntro(services, viewModel);

          const profile = await services.ui.promptSelect("What kind of CLI do you want to extend this into?", [
            { value: "desktop", label: "Desktop software control" },
            { value: "config", label: "Configuration workflow" },
            { value: "assistant", label: "AI or workflow assistant" }
          ]);
          const verbose = await services.ui.promptConfirm("Enable verbose logging in the starter config?", true);

          presentDemoSelection(services, selectDemoProfile(profile, verbose));
        });
    }
  };
}