/**
 * Resolve the upstream `holesail` class for bare-holesail / managed tunnels.
 *
 * This follows the same pattern as `bare-openssh` / `bare-ssh2`: keep `holesail`
 * as a booter-owned dependency and import it directly so Pear stages the package.
 * Upstream is AGPL-3.0.
 */

import Holesail from 'holesail'

/** ESM import so Pear stages `holesail` and its traced package deps. */
let holesailCache = null

/**
 * @param {Record<string, unknown>} ctx
 * @returns {Promise<new (opts?: object) => { ready: () => Promise<void>, close: () => Promise<void>, pause?: () => Promise<void>, resume?: () => Promise<void>, info?: unknown }>}
 */
export async function loadHolesailConstructor(ctx) {
  void ctx
  if (!holesailCache) {
    const Ho = Holesail && Holesail.default ? Holesail.default : Holesail
    if (typeof Ho !== 'function') {
      throw new Error('holesail: expected default export to be a constructor')
    }
    holesailCache = Ho
  }

  return holesailCache
}