import { TUIS, getTuiById } from "../registry/tuis.js";
import { loadConfig, saveConfig, getActiveTui } from "../runtime-config.js";
import { createLauncherScripts } from "../steps/scripts.js";
import { writeTuiConfig } from "../steps/aider-config.js";
import { commandExists, runPassthrough } from "../util.js";
import { log, err } from "../log.js";

const BOLD = "\x1b[1m";
const GREEN = "\x1b[0;32m";
const DIM = "\x1b[2m";
const RESET = "\x1b[0m";

export function listTuis(): void {
  const activeId = getActiveTui().id;

  console.log(`\n${BOLD}Available TUIs:${RESET}`);
  for (const t of TUIS) {
    const active = t.id === activeId ? ` ${GREEN}<- active${RESET}` : "";
    const installed = commandExists(t.checkCmd)
      ? ""
      : ` ${DIM}(not installed)${RESET}`;
    console.log(`  ${BOLD}${t.id}${RESET}  ${t.name}${active}${installed}`);
  }
  console.log("");
}

export async function setTui(id: string): Promise<void> {
  const tui = getTuiById(id);
  if (!tui) {
    err(
      `Unknown TUI: ${id}\nAvailable: ${TUIS.map((t) => t.id).join(", ")}`,
    );
  }

  // Install if needed
  if (!commandExists(tui.checkCmd)) {
    log(`Installing ${tui.name}...`);
    runPassthrough(tui.installCmd);
  }

  const config = loadConfig();
  config.tui = id;
  saveConfig(config);
  log(`Active TUI set to ${tui.name}`);

  // Regenerate scripts and configs
  await createLauncherScripts();
  await writeTuiConfig();
  log("Launcher scripts and configs regenerated.");
}