import { sdk } from '../sdk'
import { promises as fs } from 'fs'
import * as path from 'path'

export const showPublicKey = sdk.Action.withoutInput(
  'show-public-key',
  async () => ({
    name: 'Show Public Key',
    description:
      'Display the SSH public key. Paste it into ~/.ssh/authorized_keys on each Spark to grant access.',
    warning: null,
    visibility: 'enabled',
    allowedStatuses: 'any',
    group: null,
  }),
  async () => {
    // The container generates the key under /data/ssh/id_ed25519.pub on first boot.
    // The volume "main" is mounted at the host path that StartOS exposes via `sdk.volumes.main`.
    // For an Action running in the host, we read the file directly through the volume path.
    const pubKeyPath = path.join(
      sdk.volumes.main.path,
      'ssh',
      'id_ed25519.pub',
    )
    let key: string
    try {
      key = (await fs.readFile(pubKeyPath, 'utf8')).trim()
    } catch (e) {
      return {
        version: '1' as const,
        title: 'Public Key Not Found',
        message:
          'The container has not yet generated its SSH keypair. Start the service, wait a few seconds, and try again.',
        result: null,
      }
    }
    return {
      version: '1' as const,
      title: 'SSH Public Key',
      message:
        'Append this single line to ~/.ssh/authorized_keys on EACH Spark (<spark-user> user):\n\n' +
        key,
      result: {
        type: 'single' as const,
        name: 'Public Key',
        description: 'Copy this line to each Spark.',
        value: key,
        masked: false,
        copyable: true,
        qr: false,
      },
    }
  },
)