// electron driver — wraps the existing desktop-companion helper. availability
// is "is the rnx desktop app installed on this machine". launch delegates
// to launchDesktopCompanion, which already handles mac `open -a`, linux
// AppImage, and the --device seed.

import { findDesktopCompanion, launchDesktopCompanion } from '../desktop-companion'
import type {
  Driver,
  DriverAvailability,
  DriverLaunchOptions,
  DriverLaunchResult,
} from './types'

function probe(): DriverAvailability {
  const install = findDesktopCompanion()
  if (!install) {
    return {
      available: false,
      reason: 'rnx desktop app not installed (run `rnx desktop install`)',
    }
  }
  return {
    available: true,
    reason: null,
    detail: `${install.kind} @ ${install.path}`,
  }
}

async function launch(opts: DriverLaunchOptions): Promise<DriverLaunchResult> {
  const install = findDesktopCompanion()
  if (!install) {
    return {
      launched: false,
      message: 'rnx desktop app not installed',
    }
  }
  try {
    const result = await launchDesktopCompanion(opts.url, install, {
      device: opts.device,
      profileId: opts.profileId,
      ephemeralProfile: opts.ephemeralProfile,
      ownerPid: opts.ownerPid,
    })
    if (!result.launched) {
      return { launched: false, message: 'desktop companion failed to start' }
    }
    return {
      launched: true,
      message: opts.url
        ? `electron launched via ${result.via} → ${opts.url}`
        : `electron launched via ${result.via}`,
      target: result.target,
      attachUrl: opts.url,
    }
  } catch (err) {
    return {
      launched: false,
      message: `electron launch failed: ${err instanceof Error ? err.message : String(err)}`,
    }
  }
}

export const electronDriver: Driver = {
  id: 'electron',
  name: 'electron',
  description: 'rnx desktop companion app (native window, menu bar)',
  kind: 'native',
  availability: probe,
  launch,
}