/**
 * TUI session selector for --resume flag
 */

import { ProcessTerminal, TUI } from "@mariozechner/pi-tui";
import { KeybindingsManager } from "../core/keybindings.js";
import type {
  SessionInfo,
  SessionListProgress,
} from "../core/session-manager.js";
import { SessionSelectorComponent } from "../modes/interactive/components/session-selector.js";

type SessionsLoader = (
  onProgress?: SessionListProgress,
) => Promise<SessionInfo[]>;

/** Show TUI session selector and return selected session path or null if cancelled */
export async function selectSession(
  currentSessionsLoader: SessionsLoader,
  allSessionsLoader: SessionsLoader,
): Promise<string | null> {
  return new Promise((resolve) => {
    const ui = new TUI(new ProcessTerminal());
    const keybindings = KeybindingsManager.create();
    let resolved = false;

    const selector = new SessionSelectorComponent(
      currentSessionsLoader,
      allSessionsLoader,
      (path: string) => {
        if (!resolved) {
          resolved = true;
          ui.stop();
          resolve(path);
        }
      },
      () => {
        if (!resolved) {
          resolved = true;
          ui.stop();
          resolve(null);
        }
      },
      () => {
        ui.stop();
        process.exit(0);
      },
      () => ui.requestRender(),
      { showRenameHint: false, keybindings },
    );

    ui.addChild(selector);
    ui.setFocus(selector.getSessionList());
    ui.start();
  });
}